12 results about "Chemical resistance" patented technology

Provided is a shaped article for clean rooms comprising a resin composition prepared by melt-kneading 100 parts by weight of a cyclic olefin polymer (A) having a glass transition temperature of from 60 to 200° C., from 1 to 150 parts by weight of a flexible copolymer (B) prepared by polymerizing at least two monomers selected from a group consisting of olefins, dienes and aromatic vinyl-hydrocarbons, and having a glass transition temperature of 0° C. or lower, from 0.001 to 1 part by weight of a radical initiator (C), and from 0 to 1 part by weight of a polyfunctional compound (D) having at least two radical-polymerizable functional groups in the molecule. The shaped article for clean rooms has good chemical resistance, heat resistance and dimensional accuracy, it is inhibited from releasing a volatile component around it, and it has good abrasion resistance and is inhibited from producing particles.

The invention discloses a formula and a production method of a varnish, especially a varnish applied on objects used outdoors. With the varnish, the objects can be prevented from discoloration caused by sunlight ultraviolet irradiation. The invention aims at providing the anti-violet varnish preventing bottom-layer discoloration, and a preparation method thereof. With the varnish, bottom-layer color of a coated object can maintain unchanged after the object is irradiated by ultraviolet outdoors for a long time. According to the invention, main film-forming substances comprise silicone-modified acrylic resin in cooperation with an aliphatic polyurethane curing agent, such that a system is provided with excellent weatherability and chemical resistance. Under dual effects of a light stabilizer and a nano additive, a varnish film can effectively absorb ultraviolet with different wavelengths for a long time, and a bottom material can be prevented from discoloration caused by ultraviolet irradiation. The varnish is widely applied on outdoor objects such as buildings and ornamental objects in parks, squares, and the like.

The invention relates to a polyaryletherketone modified high-temperature-resistant epoxy grouting material and a preparation method of the polyaryletherketone modified high-temperature-resistant epoxygrouting material. The polyaryletherketone modified high-temperature-resistant epoxy grouting material comprises a component A and a component B, wherein the component A comprises the following materials by mass: 80-120 parts of epoxy resin, 10-20 parts of an active diluent, and 8-15 parts of a coupling agent; the component B comprises the following materials by mass: 40-60 parts of amination polyaryletherketone solution, 8-12 parts of a curing accelerator and 10-15 parts of benzyl alcohol; after the grouting material is completely cured, the three-dimensional structure of the epoxy resin comprises a polyaryletherketone skeleton; and the grouting material has the characteristics of high temperature resistance, high humidity resistance, chemical resistance, and high mechanical property.

The invention relates to a halogen free thermosetting resin composition, and a prepreg, a laminated board, a metal foil layer-coated laminated board and a printed circuit board using the halogen freethermosetting resin composition. Based on 100 weight parts of an organic solid matter, the halogen free thermosetting resin composition comprises the following components: (A) 25 to 55 weight parts ofphosphorus-containing epoxy resin, (B) 10 to 35 weight parts of styrene-maleic anhydride polymer, and (C) 20to 50 weight parts of biphenol fluorene benzoxazine resin. The laminated board which is prepared by adopting the halogen free thermosetting resin composition has high glass transition temperature, low low dielectric constant, low dielectric loss factor, low thermal expansion coefficient, high heat resistance, low water absorption, good flame retardance, processability and chemical resistance.

The invention discloses a coating process of the outer surface of a sculpture. The coating process comprises the following steps that 1, the sculpture is integrally polished for several times by a 40-50-mesh sand tray until the surface roughness of the sculpture is 30-50 microns, and a treatment layer is uniformly smeared on the surface of the sculpture; 2, primer is sprayed by a high-pressure airless spraying device within 6 hours after the treatment layer is smeared, wherein the thickness of the primer is controlled to 30-40 microns, and the drying treatment is conducted for 8-12 hours after the spraying is completed; 3, defects of the surface, generated after the primer is sprayed, are remedied with unsaturated polyester resin putty, and after completely cured, the surface is polished with abrasive paper to be smooth; 4, intermediate paint is sprayed by the high-pressure airless spraying device, wherein the thickness of the intermediate paint is controlled to 30-40 microns, and the drying treatment is conducted for 8-12 hours after the spraying is completed; and 5, finish is sprayed by the high-pressure airless spraying device, wherein the thickness of the finish is controlled to 30-40 microns. The coating process has the advantages that the adhesive ability, the water resistance, the chemicals resistance, the light resistance and the temperature resistance of a paint film can be improved remarkably, and the paint film has a self-cleaning property and weather 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 present invention relates to a high strength anti-aging braking cable The braking cable comprises an outer cladding (1), two parallel inner liners (2) and two groups of metal wire (3). A braking cable body (4) comprises an inner layer of a carbon fiber core group (4.1) and an outer resin layer (4.2); and one end of an outer sleeve (5) is arranged at the outer cladding (1), and the other end extends axially and outwardly along the outer cladding (1) and arranged on the braking cable body (4). According to the high strength anti-aging braking cable, the inner liners ensure equal length of the two braking cables and uniform bearing of the two braking cables during braking; the braking cable body is simple for shaping, and has light weight, chemical resistance, good weather resistance and low production cost; the braking cable effectively increases the frictional force and the support force between the inner liners and liner and the outer cladding, the inner liners and outer cladding do not slide to ensure the usage effect of a brake system; and outer sleeve can effectively protect the wear of the end portion joint of the braking cable.

The invention discloses a flubendiamide and natural pyrethrins compounded suspending agent and a preparation method thereof. The compounded suspending agent is composed of flubendiamide, natural pyrethrins, dispersing agents, wetting agents, thickening agents, antifreezing agents, preservatives, antifoaming agents and water. The preparation method of the compounded suspending agent comprises adding flubendiamide, natural pyrethrins, the dispersing agents, the wetting agents, the thickening agents, the antifreezing agents, the preservatives, the antifoaming agents and the water into a high-shearing dispersing mulser, and after dispersing evenly, performing sanding and screening to obtain the flubendiamide and natural pyrethrins compounded suspending agent with the grain size to be 0.5-5mu m.The compounded suspending agent is wide in pest control spectrum, prevents pests from easily generating chemical resistance, is simple in manufacturing process and low in production cost, does not need plenty of organic solvents, reduces costs, and reduces irritation of the organic solvents on operators and pollution to the environment.

The invention discloses a tear-resistant blown film and a preparation process thereof, relates to packaging bags, and aims to solve the problem that normal use of a film bag is affected due to the fact that the film bag is prone to deformation under the pulling action of a hand, severe deformation and damage are caused, and the key point of the technical scheme is that the tear-resistant blown film comprises a base body of a cylindrical structure formed through blow molding, the base body comprises an inner layer and an outer layer, frosted parts located on the outer circumferential wall of the base body are formed on the surface of the outer layer, the multiple frosted parts are arranged in the length direction of the base body, and a cloth layer bonded with the base body is arranged between every two adjacent frosted parts. Through the arrangement of the cloth layer, the tear resistance and puncture resistance of the film can be improved, the service life of the film and the service life of a film bag can be prolonged, the high-density outer layer is made of a polyvinyl chloride material, polyvinyl chloride has the advantages of flame retardance (the flame retardant value is 40 or above), high chemical resistance and good mechanical strength and electrical insulating property, the comprehensive capacity of the film can be improved, and the service life of the film bag can be prolonged. And the strength is good.

The invention discloses cold-coating silver finishing paint containing modified acrylic polymer resin A and a preparation method, which belong to the technical field of chemical engineering and paints. The cold-coating silver finishing paint comprises the following components: the modified acrylic polymer resin A, a dispersing agent, an aluminum pigment, a directional arrangement aid, an anti-settling agent, a stabilizer, an antifoaming agent, a leveling agent and a mixed solvent. The independently researched and developed modified acrylic polymer resin A is used as a preparation component, and when the modified acrylic polymer resin A is used in the cold-coating silver finishing paint, a very good silver paste fixing effect can be achieved, so that silver powder can be uniformly fixed, the fullness and chemical resistance of a product are met while the stability and durability of the product are improved, and the product has good weather resistance and mechanical properties; the cold-coating silver finish paint provided by the invention is simple in construction and application process, can be used for air spraying and also can be used for high-pressure airless spraying, is simpleand convenient in construction applicability, has a wide market prospect, and has very high economic and social benefits.