36results about "Polyureas/polyurethane adhesives" patented technology

The invention discloses an environment-friendly polyurethane adhesive, and a preparation method and applications thereof. The environment-friendly polyurethane adhesive comprises a polyurethane resin A component, a polyurethane resin B component, and a catalyst. The polyurethane resin B component comprises isocyanate 1 and isocyanate 2, wherein the isocyanate 1 is isophorone diisocyanate, and the isocyanate 2 is one or more of m-xylidenediisocyanate (XDI), hexamethylene diisocyanate (HDI) trimer, and 1,5-naphthalene diisocyanate (NDI). The catalyst is a mixture of a delaying catalyst and a low temperature thermal sensitive catalyst. The problem of bad yellowing resistant performance of conventional adhesives is prominently improved. The heatproof property, flexibility, and hydrolysis resistant performance of finished products of adhesive are all enhanced. Moreover, the provided adhesive is environment-friendly and degradable, and can be easily recovered and utilized. The resources are saved, the operability of the adhesive is improved, and the curing time of the adhesive is shortened.

The invention relates to the technical field of flexible circuit boards, in particular to a halogen-free resin composition. The halogen-free resin composition comprises, by weight, 40-60 parts of polyester-type polyurethane resin, 15-25 parts of polyfunctional epoxy resin, 10-20 parts of phosphorus-containing phenolic resin, 15-25 parts of phosphorus-containing flame retardant and a proper quantity of organic solvent. The polyester-type polyurethane resin contains carboxyl, the acid value is 35 KOHmg/g, and the number-average molecular weight is 10,000-50,000. The polyester-type polyurethane resin containing the carboxyl can be reacted with biphenyl type epoxy resin, and the biphenyl type epoxy resin can be reacted with the phosphorus-containing phenolic resin so that an interpenetrating polymer network structure can be formed. In this way, a cured product has excellent ionic migration resistance and has high flexibility and high heat resistance. The invention further relates to a cover film prepared from the halogen-free resin composition, the excellent ionic migration resistance is achieved, and dendritic crystals can be avoided during ionic migration resistance testing.

The invention discloses a production process of a double-point non-woven fusible interlining, which sequentially comprises the following steps of: A) using 43 percent of nylon fibers and 57 percent of polyester fibers by mass as raw materials, laying the raw materials to form a net, heating and hot rolling through a hot mill to enable the nylon fibers and the polyester fibers to be bonded with each other to form a non-woven base fabric; B) softening the non-woven base fabric through silicone oil and conducting inspection; C) cropping after the non-woven base fabric is inspected to be qualified; D) conducting double-point coating fabric feeding after cropping, firstly using a circular screen for primer transfer and then spreading fusible adhesive powder on the primer; E) clearing the fusible adhesive powder which is not combined with the primer by adopting an air blowing and suction method; F) baking through a baking oven, wherein the baking temperature is 167 DEG C and the fabric feeding speed is 36m/min; G) cooling through cooling rolls, wherein deep-well water or tap water chilled by a water chiller is filled into the cooling rolls; and H) conducting final inspection to the cooled double-point non-woven fusible interlining, rolling and containing the double-point non-woven fusible interlining in a box. The production process of the double-point non-woven fusible interlining has the advantages that the production quality is improved, the production energy consumption is reduced, the production efficiency is improved and the production cost is reduced.

Adhesive systems comprising: (A) an isocyanate group-containing prepolymer prepared by reacting: (A1) an aliphatic isocyante; and (A2) a polyol having a number average molecular weight of ≧400 g/mol and 2 to 6 OH groups; and (B) a curing component comprising: (B1) an amino group-containing aspartate ester of the general formula (I);

wherein X represents an n-valent organic radical derived from a corresponding n-functional primary amine X(NH₂)_n, R₁ and R₂ each independently represent an organic radical having no Zerevitinov active hydrogens and n represents a whole number of at least 2; and (B2) an organic filler having a viscosity of 10 to 6000 mPas at 23° C. measured according to DIN 53019; their use in wound and tissue incision closure, adhesive films comprising the same and dispensing systems therefor.

A fibreboard comprising dried plant fibres added with binder resins obtained from a reaction between a diisocyanate and a polyol derived from natural oils or fatty acids, and formed by pressing at a temperature range of 50° C. to 150° C.

The invention relates to an anticorrosive pipe and relative producing method. It is purposed to solve the problems of present technique with high cost, and worse anticorrosive effect. The invention is characterized in that the producing method comprises following steps: (1) making the pipe line needed anti-corrosion reach Sa2.5 level via shot-blast de-rusting or sandblast de-rusting and removing surface dust; (2) plating adhesive agent on the pipe line to be dried naturally; (3) coiling anticorrosive belt and draw belt on the pipe line; (4) processing steam sulfuration in 130-140Deg.C for 15-25 minutes to prepare said anticorrosive pipe. The invention has lower producing cost, better anticorrosive effect and simple process.

The invention discloses a simple and convenient synthesis method and application of waste grease based polyhydric alcohol. The synthesis method comprises the following steps: performing simple pretreatment such as filtration, dehydration and decoloration on waste grease, performing heating and stirring reaction with alkamine compounds, and performing amidation with free fatty acid in the waste grease and performing transesterification reaction with glyceride under heating conditions by using relatively high reaction activity of amino groups to form corresponding biological oil based polyhydric alcohol. The method disclosed by the invention is capable of achieving the purpose of turning waste into treasure by adopting the waste grease as a raw material, and an obtained polyhydric alcohol product has the characteristics of good biodegradability, simple and convenient preparation process, small emission of three industrial wastes, adjustable product structure and hydroxyl value, wide application range and low environmental influence level.

The invention relates to a solvent-free unfoamed polyurethane structured adhesive which contains a component A and a component B, wherein the mass ratio of the component A to the component B is 4:1; the component A contains the following raw materials in parts by mass: 30-45 parts of polyol, 50-47 parts of packing, 8-6 parts of a water removing agent, 4-2 parts of phthalic acid bi(2-ethylhexyl) ester, 3-0 parts of xylene formaldehyde resin, 4-0 parts of lyophobic gaseous silicon and 1-0 parts of an amino curing agent; and the component B contains the following raw material in part by mass: 100 parts of polymethylene polyphenyl isocyanate. The solvent-free unfoamed polyurethane structured adhesive provided by the invention is small in moisture influence, and is barely affected by ambient humidity, a foaming phenomenon in the gluing curing process can be avoided, and later reliability can be greatly improved.

Provided is a surface protective film including, as an outermost layer, a pressure-sensitive adhesive layer containing a urethane-based pressure-sensitive adhesive as a main component, the surface protective film allowing the contamination of an adherend to be extremely suppressed, and being preferably excellent in wettability and reworkability. The surface protective film of the present invention includes, as an outermost layer, a pressure-sensitive adhesive layer containing, as a main component, a urethane-based pressure-sensitive adhesive containing a polyurethane-based resin; and when a pressure-sensitive adhesive layer side of the surface protective film is attached to a glass plate at 50° C. for 10 days and then the surface protective film is peeled from the glass plate, a residual adhesive strength on the peeled surface side of the glass plate is 3.0 N/19 mm or more.

The invention discloses a quartz rod cutting process. The quartz rod cutting process includes the following steps that firstly, pretreatment is conducted, specifically, a quartz rod is soaked in hydrofluoric acid with the concentration being 5% and then taken out to be rinsed through pure water; secondly, a swelling binder is coated on a surface layer of the quartz rod; thirdly, the quartz rod isplaced in a wax sticking groove, an adhesion agent is poured into the wax sticking groove, and the adhesion agent wraps the quartz rod; fourthly, the quartz rod wrapped with the adhesion agent is subjected to still standing, solidification and forming at the room temperature; fifthly, the solidified and formed adhesion agent and quartz rod are taken out, and the adhesion agent and the quartz rod are integrally cut through a cutting machine; and sixthly, the cut adhesion agent and quartz rod are placed in a boiling pot to be subjected to boiling andadhesion agent removal treatment, and the cutquartz rod is obtained. According to the quartz rod cutting process, the adhesion agent wraps the quartz rod, the quartz rod is integrally fixed through the solidified and formed adhesion agent, the adhesion agent and the quartz rod are integrally cut through the cutting machine, and thus the quartz rod cannot deform after being cut.

The invention discloses a method for manufacturing polyurethane flexible foam packing plates. The method include steps of preparing materials, in other words, preparing, by weight, 30-40% of saw dust, 8-10% of adhesive and the balance leftovers of crops, pouring the materials into a glue mixer and uniformly mixing the materials; performing paving, in other words, coating a layer of adhesive on each single slab, paving each single slab on a steel plate, and enabling the surface, where the adhesive is coated, of each single slab to face upwardly; placing the steel plates on a conveyor belt; uniformly paving mixtures on the single slabs by the aid of a paver; laying a layer of single slabs on each mixture; performing pressurization and solidification, in other words, feeding paved plate blanks into a hot press, heating and pressurizing the plate blanks at the temperature of 140-170 DEG C, maintaining the pressure for 6-10 minutes and solidifying and forming the plate blanks; performing mold releasing and edge cutting, in other words, releasing the solidified plate blanks from molds and cutting the edges of the plates. Adhesive is brushed on the surface of each single slab which is paved on the corresponding mixture. The adhesive is polyurethane adhesive. The method has the advantages that the plates are high in bonding strength and elasticity, and the purpose of protecting environments can be achieved by the plates.

The invention discloses a reactive permeable tack coat material special for water permeable pavement. The reactive permeable tack coat material is composed of a component A and a component B, whereinthe component A comprises the following components in parts by weight: 30-50 parts of end-NCO group-terminated polyurethane prepolymer, 40-50 parts of penetrating fluid, 5-10 parts of SBS, 2-5 parts of petroleum resin, 3-8 parts of natural rosin resin, 0-1 part of flame retardant and 1-3 parts of diluent; the component B comprises the following components in parts by weight: 100 parts of a polyolcuring agent and 1-3 parts of a catalyst. The tack coat material provided by the invention is a reactive permeable tack coat material specially applied to permeable pavement, which greatly improves adhesion and durability, in particular, the tack coat material has good permeability for the permeable pavement with macropores, does not block pores, has small system viscosity, and strong adhesion, and is simple in preparation process, economic and durable.

The invention relates to a UV adhesive, in particular to a UV-OCA adhesive for TAC film bonding and a preparation method thereof. The UV-OCA adhesive for TAC film bonding comprises 5-20 parts of aliphatic polyurethane acrylate, 5-10 parts of modified cellulose resin, 10-30 parts of aliphatic polyfunctional acrylate monomer, 20-50 parts of monofunctional acrylate monomer, 1-8 parts of photoinitiator, 0.02-1 part of auxiliary agent and 0.1-2 parts of adhesion promoter. The UV-OCA adhesive is added with the modified cellulose resin with similar structure to TAC, and has high adhesion, rapid curing, no solvent, high light transmittance, and no need to pretreat TAC before bonding, the prepared UV-OCA adhesive has strong adhesion to untreated TAC film, small shrinkage rate, rapid curing, high electronic transmittance, no VOC emission, environmental protection and energy saving.

The invention provides an adhesive, a preparation method thereof and a skin. The preparation method comprises the following steps: carrying out styrene-butadiene-styrene (SBS) epoxy modification: carrying out a reaction on an SBS copolymer, an organic acid and hydrogen peroxide to obtain an SBS epoxy modified product; synthesizing a main agent: carrying out a chain extension reaction on polyol anda first polyisocyanate to obtain an isocyanate prepolymer; mixing the isocyanate prepolymer, a part or all of the SBS epoxy modified product and a first solvent to obtain the main agent; synthesizinga curing agent: carrying out a reaction on isocyanate groups of a second polyisocyanate with hydroxyl groups of trimethylolpropane in a second solvent to obtain trimethylolpropane modified isocyanate; and preparing the adhesive: mixing the main agent with the curing agent to obtain the adhesive. The adhesive prepared by the preparation method provided by the invention has proper hardness and excellent tear resistance.

The invention discloses a novel moisture-curing flame-retardant polyurethane hot melt adhesive and a preparation method thereof. The novel moisture-curing flame-retardant polyurethane hot melt adhesive is characterized by being prepared from 1-20 parts of polyether diols, 1-35 parts of liquid polyester diols, 1-40 parts of flame-retardant polyether glycol, 1-35 parts of crystalline polyester diols, 1-35 parts of an isocyanate-containing modified polyacrylic acid fluorosilicone copolymer, 1-50 parts of isocyanate, 0.01-1 part of a catalyst, 0.01-1 part of an antioxidant and 0.1-2 parts of a silane coupling agent. The isocyanate-containing modified polyacrylic acid fluorosilicone copolymer is synthesized firstly, the chemical structure of the copolymer is poly(hexafluorobutyl acrylate-random-monomethacryloxypropyl terminated polydimethylsiloxanes-random-methyl acrylate-random-isocyanatoethyl methacrylate, the copolymer is added to a polyurethane prepolymer and subjected to condensation polymerization, a fluorosilicone-containing acrylate copolymer chain segment and a reaction type flame retardant are introduced and have an efficient synergistic effect, and therefore, comprehensive chemical resistance, oil resistance, water resistance and flame retardance are improved.

The invention discloses an anti-static thermal-insulating adhesive which comprises the following components in parts by weight: 24-36 parts of lithium silicate, 20-30 parts of graphite pebbles, 16-18 parts of vanadium trioxide, 10-20 parts of azodicarbonamide, 8-12 parts of zinc oxide, 4-12 parts of benzoyl peroxide, 10-20 parts of polyurethane, 40-60 parts of organic silicon, 20-60 parts of polyimide, 40-60 parts of poly-isobutyl ester, 40-80 parts of phenolic resin, 10-20 parts of magnesium silicate, 20-30 parts of acetone, 10-12 parts of benzoyl peroxide, 10-20 parts of azodicarbonamide, 20-30 parts of benzoyl peroxide, 10-12 parts of phthalic acid dibutyl ester and 12-20 parts of triphenyl phosphate. The anti-static thermal-insulating adhesive disclosed by the invention is simple to prepare, good in use effect and environment-friendly, the production raw materials are free of toxicity, and an adhesive coating is good in anti-static property.

The invention discloses a solvent-free type colorized anti-skid road surface adhesive. The solvent-free type colorized anti-skid road surface adhesive comprises, by weight, 68 parts to 74 parts of polyether type amines cross-linked sizing, 25 parts to 30 parts of polyisocyanate and 1 part to 2 parts of catalysts, wherein the catalysts comprise, by weight, 0.5 part to 1 part of zinc 2-ethylhexanoate and 0.5 part to 1 part of 2-ethylhexoic acid, and the polyisocyanate is diphenyl-methane-diisocyanate. Colorized ceramic particles formed by the solvent-free type colorized anti-skid road surface adhesive have the advantages that the colorized ceramic particles are environmentally friendly, the service life is long, the curing time is short, and release of construction roads is accelerated.

Synthetic resin fixing system based on cyclic carbonate resins, characterised in that as cyclic carbonate resin it comprises at least one having an average functionality of 1.5 or more than 1.5 cyclic carbonate groups per molecule, the production thereof and use thereof for fixing, especially, anchoring means in drilled holes.

The invention relates to the technical field of hot melt adhesive preparation, and discloses a hot melt adhesive sheet. The hot melt adhesive sheet comprises the following components by weight: 45-55%of thermoplastic polyurethane elastomer rubber and 30-35% of ethylene-vinyl acetate copolymer rubber. The hot melt adhesive sheet has the following advantages and effects: the thermoplastic polyurethane elastomer rubber is mainly used for increasing elasticity and viscosity of the material; the ethylene-vinyl acetate copolymer rubber is used for improving bending resistance of the material so asto improve toughness of the material. Therefore, the thermoplastic polyurethane elastomer rubber and the ethylene-vinyl acetate copolymer rubber are mixed to obtain the hot melt adhesive sheet with better elasticity, so that shoes can be automatically recovered after deformation, and wearing of the shoes is prevented from being influenced; and on the other hand, the thermoplastic polyurethane elastomer rubber and the ethylene-vinyl acetate copolymer rubber are blended, so that the hot melt adhesive has more excellent toughness and hardness, and comprehensive performance of the material can beimproved.

The invention discloses a preparation method of a graphene modified polyurethane adhesive, and the method comprises the following steps: uniformly dispersing 0.5-1 part by weight of graphene oxide in10 parts by weight of absolute ethyl alcohol, and reacting with 20 parts by weight of polyisocyanate to obtain a polyisocyanate-graphene oxide mixed solution; reacting 25 parts of triethanolamine, 30parts of sodium hydroxyethyl sulfonate, 33 parts of n-decane and 0.5 part of metallic sodium to obtain sulfonated dihydric alcohol; adding 8 parts of absolute ethyl alcohol, dissolving, and carrying out reduced pressure distillation to obtain sulfonic acid group-containing dihydric alcohol; and carrying out reduced pressure distillation on 60 parts of polyester polyol and 10 parts of the sulfonicacid group-containing dihydric alcohol, reacting with the polyisocyanate-graphene oxide mixed solution, and adding a thickening agent and a defoaming agent into the reactant subjected to chain extension to obtain the graphene modified polyurethane water-based adhesive. The adhesive is high in graphene content, good in dispersity, not prone to agglomeration, environmentally friendly and resistant to bacteria, and the use performance and the storage stability of the adhesive are greatly improved.

The invention relates to an adhesive dual-component composition comprising a composition A based on a polyurethane prepolymer with cyclocarbonate terminations and a composition B based on a mixture comprising at least one diamine B1 comprising only two primary amine groups of the —CH₂—NH₂ type and at least one polyamine B2 comprising at least three primary amine groups of the —CH₂—NH₂ type. The invention also relates to a multilayer structure produced from the adhesive composition according to the invention and to the method for the production thereof.

The invention provides a 3D anti-collision buffer material, a preparation method thereof and a helmet buffer cushion layer, and the preparation method comprises the following steps: S10, uniformly mixing raw materials in proportion, and then mixing by an internal mixer to obtain modified polypropylene slices; S20, taking the modified polypropylene slices as a raw material to prepare a tower-shapedmelt-blown PP non-woven base material with array arrangement; and S30, evenly brushing at least two layers of tower-shaped melt-blown PP non-woven base materials with an adhesive in a rolling mode under the action of double rollers and cured for a period of time, and preparing the melt-blown anti-collision buffer material of a three-dimensional structure. According to the 3D anti-collision buffermaterial, the preparation method of the 3D anti-collision buffer material and the helmet buffer cushion layer, the tower-shaped melt-blown PP non-woven base material obtained through the receiving procedure of the special-shaped collecting device has the tower-shaped concave-convex structure, the anti-collision buffer material formed by compounding the tower-shaped melt-blown PP non-woven base material is provided with the multiple buffer air bags and can be widely applied to the field of safety protection, and wide application prospects are realized.

The invention provides a preparation method of a welding glue for vehicle manufacturing. The preparation method comprises the following steps: 1) crushing the following raw materials in a formula ratio: epoxy resin, diallyl phthalate, methyl ethyl ketone peroxide, a toughening agent, a viscosity reducer and a plasticizer into powder, and uniformly stirring the substances; 2) adding the uniform powder into a reaction kettle, and then heating the reaction kettle to 120DEG C to obtain a mixed solution in a molten state; 3) adding inert filler into the mixed solution and performing stirring, thenadding polyether amine, calcium silicate hydrate and triglyceride, and performing stirring again to obtain sealant oil-based molten slurry; 4) pouring the sealant oil-based molten slurry into a cooling tower, adding a reinforcing agent, a softening agent and a filling agent, and adjusting the hardness of the welding glue; 5) adding a stabilizer, a moisture absorbent, a pigment and filler, and performing stirring for 15min to form a solid welding glue, and 6) pouring the solid welding glue into a grinding machine, and performing degassing and curing at the end of grinding and dispersing to obtain a welding glue finished product.