126results about How to "Improve initial viscosity" patented technology

The invention discloses an environment-friendly high-strength water-resisting and mildew-resisting adhesive for a plywood and a preparation method of the environment-friendly high-strength water-resisting and mildew-resisting adhesive. The environment-friendly high-strength water-resisting and mildew-resisting adhesive is prepared from the following raw materials including polyvinyl alcohol, cassava starch, dibutyl phthalate, sodium pyrosulfite, tannic acid, jade powder, calcium silicate hydrate, asbestos powder, p-hydroxybenzoic acid hydrazide, diammonium hydrogen phosphate, hydroquinone, sodium diethylhexyl sulfosuccinate, triethyltin chloride, phenyl mercury oleate, borax and the like. The polyvinyl alcohol and the cassava starch are subjected to a cross-linking reaction so that crystallization degrees of the polyvinyl alcohol and the cassava starch are reduced and a new cross-linking structure is formed, and furthermore, the thermal stability of the adhesive is improved; the borax is added and the polyvinyl alcohol and the starch can be subjected to further cross linking, so that the cross-linking degree and the initial viscosity of the adhesive are improved, and furthermore, the water resistance and the bonding force of the adhesive can be improved; the triethyltin chloride, the phenyl mercury oleate, the p-hydroxybenzoic acid hydrazide and the like are added so that the mildew-resisting capability of the plywood can be improved.

The invention discloses an environmentally-friendly hot-melt pressure sensitive adhesive. The environmentally-friendly hot-melt pressure sensitive adhesive is prepared from, by weight, 25-35 parts ofa thermoplastic elastomer, 28-36 parts of modified petroleum resin, 6-10 parts of natural tackifying resin, 12-20 parts of a plasticizer, 2-3 parts of a modifying filler, 0.2-0.3 part of a coupling agent and 0.2-0.3 part of an antioxidant. The present invention also discloses preparation method of the hot-melt pressure sensitive adhesive. The thermoplastic elastomer is used as a matrix for the hot-melt pressure sensitive adhesive, the modified petroleum resin and the natural tackifying resin are used as tackifying resins, and no organic solvent is needed, so the raw materials are safe and environmentally friendly; the petroleum resin is modified, so the compatibility of the petroleum resin and the thermoplastic elastomer is improved, and the thermal stability of the hot-melt pressure sensitive adhesive is improved; and the reinforcing effect of the modifying filler improves the initial viscosity, the glass strength and the thermal stability of the hot-melt pressure sensitive adhesive are improved, so the environmentally-friendly hot-melt pressure sensitive adhesive with excellent performances is prepared.

An addition type silicone pressure-sensitive adhesive used for medicines and a preparing method thereof are disclosed. Raw materials of the addition type silicone pressure-sensitive adhesive include, by weight, 100 parts of vinyl silicone oil, 5-10 parts of hydrogen-containing silicone oil, 3-5 parts of a filler, 0.03-0.3 part of an inhibitor and 0.03-0.3 part of a catalyst. The pressure-sensitive adhesive is nontoxic, nonirritant, waterproof and breathable, has good initial adhesive force, holding power and peel strength, can be uncovered and adhered repeatedly, and is a pressure-sensitive adhesive material having ideal properties for medicines.

An alkyl phenolic resin rubber tackifier of the invention has a molecular structure containing benzoxazole heterocyclic groups, and the benzoxazole heterocyclic groups are bonded into the molecules by forming ether bonds through etherification reactions between benzoxazole heterocyclic compounds with monoetherification reaction functional groups and alkylphenol. The tackifier can provide good viscosity for unvulcanized rubber materials. In addition, the alkyl phenolic resin rubber tackifier of the invention can also significantly improve the adhesive force between rubber materials and steel cord materials.

The invention provides a preparation method of a modified starch adhesive, which comprises the following steps: (1) adding deionized water as a solvent into a three-neck flask, adding corn starch into the deionized water, and stirring and heating until the corn starch is sufficiently swollen; (2) adding hydrochloric acid, heating, adding an oxidizer, and keeping the temperature to sufficiently react the oxidizer with the corn starch; (3) adding polyvinyl alcohol, and heating; (4) adding a boric acid solution, heating, and keeping the temperature to sufficiently perform coupling reaction on the boric acid and polyvinyl alcohol; (5) adding a formaldehyde solution, and continuing keeping the temperature; (6) adding sodium hydroxide to terminate the reaction; and (7) adding a surfactant, a drier and a preservative, cooling and discharging to obtain the modified starch adhesive. The preparation method has the advantages of simple technique, accessible raw materials and low cost, and can obtain the modified starch adhesive, which has the advantages of favorable initial viscosity, high drying rate, high viscosity, high mounting performance and stable performance and is convenient for sizing.

The invention discloses polyether ester multi-block copolymerized dihydric alcohol, a synthesis method and application of a reactive hot melt adhesive. The polyether ester multi-block copolymerized dihydric alcohol is mainly prepared from the following raw materials: polyethylene glycol terephthalate, small molecular dihydric alcohol, polyether dihydric alcohol, an alcoholysis catalyst, a polycondensation catalyst and an antioxidant. The synthesis method comprises the following steps: adding polyethylene glycol terephthalate, small molecular diol, polyether diol and an alcoholysis catalyst into a reactor, carrying out alcoholysis reaction under the protection of nitrogen, adding a polycondensation catalyst and an antioxidant, heating the reactants, carrying out vacuum polycondensation reaction, and cooling a reaction product. The invention also discloses an application of the polyether ester multi-block copolymerized dihydric alcohol in preparation of the reactive hot melt adhesive. The polyether ester multi-block copolymerized dihydric alcohol has a micro-phase separation structure and-lower and-zero glass transition temperatures, and has good intermiscibility with polyester and polyether polyol. The method is short in reaction time, simple, low in cost and suitable for industrial production. The obtained hot melt adhesive has high initial adhesion and long opening time.

The invention discloses a non-substrate easy-to-pull removable adhesive tape. The adhesive tape has a thickness of 20 to 300 mu m, is prepared from the following components in parts by mass: 80 to 150parts of thermoplastic rubber, 60 to 150 parts of tackifying resin, 100 to 330 parts of toluene, 1 to 30 parts of softener, 1 to 10 parts of color paste, and 0.1 to 1 part of leveling agent. The non-substrate adhesive tape is a double-sided fixing tape with high bonding strength, can be used without pretreatment, and can be used after just peeling off the release paper or the release film. When the adhesive tape needs to be removed, the adhesive tape is only stretched to remove. The adhesive tape can bring great convenience to the staff during the maintenance of the electronic components.

The invention belongs to the field of a chemical industry, and especially relates to an aqueous acrylic acid adhesive and a preparation method thereof. The aqueous acrylic acid adhesive comprises thefollowing components in parts by weight: 15-20 parts of acrylic acid, 10-15 parts of methyl acrylate, 10-15 parts of ethyl acrylate, 10-15 parts of acrylic acid-2-ethylhexyl acrylate, 10-15 parts of methyl methacrylate, 10-15 parts of butyl acrylate, 5-10 parts of dimethylolpropionic acid, 5-10 parts of an emulsifier, 5-8 parts of triethylamine, 3-5 parts of a silane coupling agent, 3-5 parts of ablocking agent, 3-5 parts of an adhesion agent, 3-5 parts of aqueous silicone oil, and 300-500 parts of deionized water. The technology is simple and easy to control, and a polymerization system is stable; the obtained adhesive has the advantages of good mechanical stability, storage stability, and compatibility with a general auxiliary agent, and is suitable for industrial production.

The invention discloses an aqueous dry lamination adhesive and a preparation method thereof. Raw materials of the aqueous dry lamination adhesive comprise styrene, butyl acrylate, isooctyl acrylate, acrylonitrile, N-methylolacrylamide, hydroxyethyl acrylate, acrylic acid, rosin, potassium persulfate, sodium dodecylbenzene sulfonate, isooctyl phenol polyoxyethylene ether, sodium bicarbonate, deionized water, ammonia water, a wetting agent and antifoaming agent. Aqueous latex with a core-shell structure is prepared through a segmented polymerization technology, so functional groups make a substrate and a plastic film be fully bonded, and polymer molecular chains are self-crosslinked, thereby the adhesion and the peeling strength of the substrate are improved, the adhesive has excellent initial adhesion, pressure sensitivity and covering ability, the excellent leveling property and the dynamic wetability of the adhesive make a laminated product have brilliant gloss, and the adhesive can be widely used in paper plastic lamination.

The invention discloses a nail-free all-purpose adhesive and a preparation method thereof, and aims to provide a nail-free all-purpose adhesive which has the advantages of high viscosity, high safety and environment friendliness and is convenient to use. The technical scheme is as follows: the nail-free all-purpose adhesive is composed of 50-100 parts of rubber SBSYH-792, 20-50 parts of rubber SBSYH-796, 20 parts of rubber LGSBS411, 5 parts of polar EVA (ethylene-vinyl acetate), 170 parts of methyl acetate, 350-445 parts of ExxsoL DSP, 30-50 parts of dichloromethane, 40-90 parts of cold-polymerized C9 petroleum resin, 20-50 parts of hot-polymerized C9 petroleum resin, 10 parts of p-tert-butyl phenol formaldehyde resin, 4 parts of active magnesium oxide, 0.125 part of water, 90 parts of terpene resin, 35 parts of modified rosin resin, 5 parts of vinyl chloride-vinyl acetate resin, 5 parts of antioxidant, 15-20 parts of vapor-phase silicon dioxide, 5 parts of titanium white, 0.5 part of coupling agent, 40-50 parts of modified bentonite and 5 parts of zinc stearate. The nail-free all-purpose adhesive belongs to the technical field of high polymers.

The invention discloses a pressure-sensitive adhesive protection film for a mobile phone screen and a preparation method of the pressure-sensitive adhesive protection film. Raw materials of the pressure-sensitive adhesive protection film for the mobile phone screen, disclosed by the invention, comprise two components A and B; the component A comprises the components in percentage by weight: 4-10%of hard monomer, 18-29.5% of soft monomer, 1-5% of functional monomer, 0.5-2% of silicon monomer, 65% of solvent and an initiator accounting for 0.1-0.5% of the total weight of the hard monomer, the soft monomer, the functional monomer and the silicon monomer; and the component B is a curing agent accounting for 0.5-3% of the total weight of the component A. The pressure-sensitive adhesive protection film for the mobile phone screen, disclosed by the invention, is very good in initial adhesion and wet-heat resistance, incapable of remaining fog-shaped adhesive marks on the surface of a glass screen of a mobile phone under a wet-heat condition, stable in performance and capable of use for a long time.

The invention discloses a method for preparing an artificial plate adhesive and belongs to the field of adhesives. According to the artificial plate adhesive, an extract of ginkgo seed coat and nano zinc borate are used; due to substances such as ginkgolic acid and phenol in the ginkgo seed coat, the security and environment protection properties of a wooden product can be improved, and the livingenvironment can be protected; due to addition of the nano zinc borate, the decomposition reaction process and directions of wood can be changed, and pyrolytic reactions of the wood can be developed to generate relatively rich charcoal; meanwhile, a substrate is covered by generated molten boric oxide, so that the flame retardancy of the wooden product can be improved, and the body security can befurther improved. By adopting the method, the problems that a great amount of an adhesive is used in conventional artificial plate production, most adhesives are good in combination property, but poor in function and thus the formaldehyde release amount of an artificial plate is kept at a high level and the living environment can be deteriorated, can be solved.