8 results about "Hydroxyethyl cellulose" patented technology

The invention discloses a thermoplastic starch-polyvinyl alcohol composite plastic film, and relates to the technical field of film production. The composite plastic film is made by using the following raw materials, by mass, 80-100 parts of (self-made) thermoplastic starch, 40-55 parts of polyvinyl alcohol, 10-15 parts of acrylic acid, 5-10 parts of benzoyl peroxide, 7-12 parts of oxidized polyethylene wax, 4-8 parts of hydroxyethyl cellulose, 5-12 parts of calcium stearate, 5-15 parts of iron oxide, 3-6 parts of gelatin, 5-10 parts of urea, and 8-15 parts of polyethylene glycol. The composite plastic film made in the invention reserves the good biodegradation performance of starch and effectively improves the mechanical performances of a plastic film, and a covalent bond introduced due to the addition of a cross-linking agent can substitute a hydrogen bond in order to improve the mutual crosslinking among starch, polyvinyl alcohol and other raw material molecules.

The invention discloses an alkali-free liquid setting accelerator formula for sprayed concrete and a making process. The process includes the steps that 30%-50% of sulfate, 2%-10% of aluminum salt and40%-60% of water are added into a stirrer four-mouth flask with temperature control, heating is performed under stirring until the temperature reaches 75-85 DEG C, and heat preservation is performeduntil the raw materials are completely dissolved; a mixed solution obtained after dissolving is filtered through a first filter screen, the mixed solution in the first step is cooled to 40 DEG C, then, 0.2%-0.3% of alcohol amine polymer and 0.1%-0.2% of amide polymer are added for a reaction of 2 hours, then, 0.1%-0.2% of hydroxyethyl cellulose is added for a reaction of 30 minutes, water is addedfor regulation until the concentration reaches 40%, cooling is performed to obtain a colorless transparent liquid setting accelerator, and the colorless transparent liquid setting accelerator is filtered through a second filter screen. The alkali-free liquid setting accelerator hardly causes corrosive damage to the human body, has high early strength and later compressive strength rate and has noadverse effect on the durability of concrete, and a tackifying component can reduce the dust concentration and springback in the spraying process.

The invention belongs to the field of water environment treatment, and particularly relates to a preparation method and application of a hydroxyethyl cellulose modified scale inhibitor capable of effectively inhibiting silicon dioxide scale bodies in a green and efficient manner. The green modified cellulose scale inhibitor is prepared by taking hydroxyethyl cellulose as a raw material, ammonium persulfate as an initiator and N-(3-dimethylaminopropyl) methacrylamide as a grafting monomer through a grafting reaction. According to the method, a grafting chain containing an amide group and a tertiary amine group can be introduced to a cellulose molecular chain, so that scale forming substances can be effectively dispersed, and the efficient environment-friendly scale inhibitor is obtained. The scale inhibitor prepared by the invention can effectively inhibit the generation of scale bodies and prevent the size of the scale bodies from being increased; when the scale inhibitor is applied to a reverse osmosis system, the reduction of membrane flux is effectively relieved, and the membrane has a good application prospect in controlling silicon dioxide scaling on the surface of the reverse osmosis membrane.

The invention relates to a lubricant produced from a high molecular polymer. The lubricant comprises the raw materials in mass ratio (W/W%) of 3.0-5.0 of glycerine, 0.5-2.0 of PEG-40 hydrogenated castor oil, 0.1-0.5 of essence, 0.5-1.0 of phenoxyethanol, 0.05-0.2 of ethylhexylglycerin, 0.5-2.0 of hydroxyethyl cellulose, 3.0-5.0 of propylene glycol, 0.05-0.15 of citric acid, 0.5-1.0 of polyacrylamidomethylpropane sulfonic acid, and the balance water. The lubricant has the advantages that compared with a cellulosic material, the high molecular material is difficult to absorb by skin of human bodies, and the remaining time of the high molecular material on the surfaces of the skin of the human bodies is greatly prolonged compared with cellulose, so that the effect of prolonging the duration of lubricating property can be achieved; the polymer is added, so that the absorption speed by the skin can be delayed; and the time of the lubricant is prolonged, the lubricating properties are not reduced, and the lubricant is harmless to human bodies.

The invention discloses an electrode inhibitor and an application thereof, and a production method of a battery pole piece. The electrode inhibitor comprises the following components in percentage by mass: 10-30% of hydroxyethyl cellulose and 70-90% of N-methyl pyrrolidone. The electrode inhibitor is applied to the battery pole piece and is mainly added into a coating slurry of the pole piece, hydroxyethyl cellulose in the electrode inhibitor can react during heating, the crystal form of a polyvinylidene fluoride (PVDF)-(C2H2F2) n-series binder on the pole piece is rearranged (including the crystal is changed into a disordered state from an ordered state), the appearance of a coating film is smooth, and the problem of pole piece cracking caused by the semi-crystallinity of polyvinylidene fluoride during rapid thick film coating is inhibited so that the capacity, the rate capability and the like of the lithium ion battery are improved.

The invention discloses a composite board with electromagnetic shielding performance and a preparation method thereof, and relates to the technical field of new materials. The preparation method comprises the following steps of firstly mixing aminated graphene oxide adsorbing copper ions with polypropylene; then carrying out dry spinning to obtain modified polypropylene fibers, carrying out suspension polymerization on styrene, benzoyl peroxide, hydroxyethyl cellulose, maleic anhydride, starch, potassium periodate and acrylic acid as main raw materials to obtain modified hollow microspheres; and finally, mixing the modified polypropylene fibers with carbon fibers, polyester and the modified hollow microspheres, carrying out carding and web forming to obtain a mixed fiber felt, and carrying out needling reinforcement and hot pressing treatment on the mixed fiber felt to obtain the composite board with the electromagnetic shielding performance. The prepared composite board with the electromagnetic shielding performance has excellent electromagnetic shielding performance and noise reduction performance, and is low in density and good in strength.

The invention belongs to the field of cosmetics. In particular, the invention relates to a black mud oil-control acne-removing whitening facial mask and a preparation method thereof. According to theblack mud oil-control acne-removing whitening facial mask, the facial mask consists of a base material and a facial mask composition, and the facial mask composition is used for uniformly coating thebase material. The facial mask composition comprises the following components in percentage by mass: 5-20% of black mud powder, 1.0-5.0% of chamomile extract, 1.0-5.0% of baical skullcap root extract,1.0-5.0% of tranexamic acid, 0.1-0.5% of 3-o-ethyl ascorbic acid, 0.1-1.0% of octylphenol polyoxyethylene ether, 5.0-10% of glycerol, 5.0-10% of propylene glycol, 0.1-0.5% of hydroxyethyl cellulose,0.5-3.0% of sodium hyaluronate and 40-60% of deionized water. The facial mask adopts the black mud powder which has oil absorption effect, combines the chamomile extract, the baical skullcap root extract, the tranexamic acid and the sodium hyaluronate to realize the acne-removing and whitening effects, and achieves the aim of safely and effectively controlling oil and removing acne and whitening skins.

The invention discloses a waterproof material for polystyrene boards and gypsum boards of building walls. The waterproof material is prepared from the following raw materials in parts by weight: 8-10parts of cement clinker, 6-10 parts of quick lime, 10-15 parts of a polyethylene emulsion, 15-20 parts of a paraffin emulsion, 4-8 parts of glass fibers, 3-6 parts of borax, 3-6 parts of sodium alginate, 3-5 parts of a grinding aid, 3-4 parts of sodium methyl silicate, 2-6 parts of hydroxyethyl cellulose, 2-4 parts of sodium tripolyphosphate, 2-4 parts of triethanolamine, 2-3 parts of aluminum potassium sulfate, 2-3 parts of dodecyl ethyoxyl sulphobetaine, 1-3 parts of polyacrylamide, 1-2 parts of calcium lignosulphonate and 50-80 parts of water. During construction, only 1mm of the material needs to be smeared on a polystyrene board wall body and a gypsum board wall body, after air drying, the surface layer of the wall surface is cleaned and polished to be flat, construction is convenient, time and labor are saved, the polystyrene board wall body and the gypsum board wall body treated through the material can completely eradicate the phenomena of alkali efflorescence, falling, moisture regain, mildewing and hollowing of the wall bodies, the service life of the polystyrene board and the gypsum board of the building wall body is greatly prolonged, and the cost is low.