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63 results about "Vinyloop" patented technology

VinyLoop is a proprietary physical plastic recycling process for polyvinyl chloride (PVC). It is based on dissolution in order to separate PVC from other materials or impurities.

Production technology of methyl vinyl silicon rubber

The invention relates to a production technology of high-transparency and high-vinyl methyl vinyl silicon rubber. The production technology comprises the following steps of performing primary filtering and fine filtering on DMC, so as to remove colored impurities including iron rust and the like; removing impurities from auxiliary materials, VMC and divinyltetramethyldisiloxane through vacuum bubble dehydration and physical dynamic adsorption; using a high-temperature and low-pressure dehydration technology, adding the dehydrated material into a polymerizing kettle, adding a catalyst, VMC and a termination sealing agent to polymerize, and balancing after the polymerizing is completed; preheating the balanced rubber material, and then sending into a low molecule removal device to remove low molecule and produce the rubber. The production technology has the advantages that the problems of easiness in crosslinking and broad distribution of molecular weight in the high-vinyl raw rubber are solved; in the low molecule removal process, the gradual heating manner is adopted, and the problems of falling and crosslinking of vinyl, instability of vinyl content, slight yellowing of a product and the like due to continuous high temperature of local part in the raw rubber production heating process are solved.
Owner:HUBEI XINGRUI SILICON MATERIAL CO LTD

Preparation method of fluorinated polysiloxane raw rubber with terminal groups containing vinyl

InactiveCN103910883AMolecular weight is easy to adjustReduced bite back\"DisiloxanePolymer science
The invention relates to a preparation method of fluorinated polysiloxane raw rubber with terminal groups containing vinyl. The preparation method comprises the following steps: (1) carrying out heating dehydration on sodium hydroxide and divinyl tetramethyl disiloxane, carrying out heating reflux, cooling, filtrating, reducing pressure of filtrate so as to remove impurities so as to obtain solid powder, sealing and storing; (2) heating vinyl dimethyl silanol sodium salt in the step (1) and a fluorine-containing monomer (3,3,3-trifluoropropyl)methylcyclotrisiloxane, dewatering, continuously heating, and carrying out reduced pressure so as to remove low-boiling-point substances; (3) adding the fluorine-containing monomer (3,3,3-trifluoropropyl)methylcyclotrisiloxane and tetravinyl tetramethyl cyelo tetrasiloxane to a polymerization reactor, heating, dewatering, adding vinyl dimethyl silanol sodium salt alkali-gel, carrying out polymerization reaction, neutralizing by using a neutralizing agent, heating and removing low-boiling-point substances to obtain the fluorinated polysiloxane raw rubber with the terminal groups containing vinyl. The preparation method is used for producing the hot vulcanized fluorinated polysiloxane raw rubber with oil resistance and solvent resistance; the hot vulcanized fluorinated polysiloxane raw rubber serving as sealing materials, coating materials, gasket materials and the like is widely applied to the fields such as aviation, aerospace, automobiles, petrochemical engineering and artificial organs.
Owner:浙江恒业成有机硅有限公司

Copolymerization-immobilized beta-cyclodextrin porous separation material as well as preparation method and application thereof

The invention discloses a copolymerization-immobilized beta-cyclodextrin porous separation material as well as a preparation method and an application thereof belongs to a porous separation material technology. The preparation method comprises the following steps of: preparing vinyl beta-cyclodextrin; uniformly mixing vinyl beta-cyclodextrin with styrene, p-vinyltoluene and an emulsifier, and then adding an initiator and aqueous solution containing an electrolyte to prepare a stable concentrated emulsion; polymerizing for 6-48 hours at 50-80 DEG C to obtain the copolymerization-immobilized beta-cyclodextrin porous separation material, wherein the mixture of vinyl beta-CD, styrene, p-vinyltoluene and the emulsifier is continuous-phase, the aqueous solution containing the electrolyte is disperse-phase, and the volume fraction of the disperse phase occupying the concentrated emulsion is 74-95%; the dosages of the initiator and the electrolyte are 3-10% of the mass of the mixture of vinyl beta-CD, styrene and p-vinyltoluene. The porous separation material can be used for phenolic wastewater treatment, and can achieve certain separation efficiency.
Owner:BEIJING UNIV OF CHEM TECH

Preparation method of neodymium iron boron with low cost and high corrosion resistance

The invention discloses a preparation method of neodymium iron boron with low cost and high corrosion resistance. The preparation method comprises the following steps: S1, pretreating a sintered neodymium iron boron magnet by using an initial impact current in a titanium salt solution; S2, uniformly stirring and mixing fluorine-containing methacrylate, epoxy resin and vinyl epoxy resin to preparea main body raw material, putting the main body raw material into a ball-milling tank, adding 1 / 2 part of an additive and titanium phosphate, and performing ball-milling and uniform mixing to obtain amodified coating mixed solution; and S3, adding a curing agent, the remaining 1 / 2 part of additive and filler into the modified coating mixed solution obtained in the step S2, performing stirring andmixing uniformly, spin-coating the surface of the neodymium iron boron material pretreated in the step S1, and performing heating and drying after coating to obtain the corrosion-resistant neodymiumiron boron. According to the preparation method, after the neodymium iron boron is pretreated, the modified coating is subjected to spin coating and drying, the neodymium iron boron with high corrosion resistance is obtained, the preparation process is simple, and the cost is low.
Owner:ZHEJIANG ZHONGHANG NEW MATERIAL

Corrosion-resistant composite protective layer material for neodymium iron boron

The invention discloses a corrosion-resistant composite protective layer material for neodymium iron boron, and the composite protective layer material comprises: a substrate layer which is spin-coated on the neodymium iron boron; a protective layer coated on the substrate layer, wherein the protective layer is prepared from the following raw materials in parts by weight: 10-20 parts of fluorine-containing methacrylate, 30-50 parts of epoxy resin, 40-60 parts of vinyl epoxy resin, 5-10 parts of an additive, 0.5-1.5 parts of a curing agent, 1-2.5 parts of a filler and 20-50 parts of deionized water. According to the composite protective layer material, through the arrangement of the double-layer structure of the base layer and the protective layer, the surface corrosion resistance of the neodymium-iron-boron permanent magnet can be improved, the wear resistance and the heat resistance of the neodymium-iron-boron permanent magnet can be improved, and the service life of the neodymium-iron-boron surface protective layer is prolonged.
Owner:ZHEJIANG ZHONGHANG NEW MATERIAL

Coating for coating plastic bottom shell of notebook computer

The invention discloses a coating for coating a plastic bottom shell of a notebook computer. The coating comprises a primer and a finish; the primer comprises a component A and a component B, and the mass ratio of the component A to the component B is 100: (2-5); the component A is prepared from 50 to 70 parts of carboxyl-containing hyperbranched poly (amine-ester) acrylate, 10 to 20 parts of carboxyl-terminated aromatic hyperbranched polyester, 2 to 4 parts of functional additive and 20 to 30 parts of solvent A; the component B is prepared from the following components in parts by weight: 60 to 80 parts of aziridine cross-linking agent XR-100 and 25 to 35 parts of butyl acetate; the finish paint is prepared from the following components in parts by weight: 60 to 75 parts of hyperbranched perfluorinated polyurethane acrylate oligomer, 3 to 5 parts of 4-vinyl-2, 8-bis (trifluoromethyl) quinoline, 2 to 4 parts of 2, 4, 6-trivinyl boroxane, 0.1 to 0.3 part of 1-allyl-3-vinyl imidazole chlorine salt, 4 to 6 parts of matting powder, 0.8 to 1.2 parts of a flatting agent, 1 to 2 parts of a dispersing agent, 0.8 to 1.2 parts of an initiator and 40 to 50 parts of a solvent B. The coating for coating the plastic bottom shell of the notebook computer, disclosed by the invention, is good in impact strength, excellent in wear resistance, heat and humidity resistance, cold and hot cycle resistance and heat-resistant stability, and sufficient in environmental protection property and adhesive force.
Owner:安徽英力电子科技股份有限公司

Vinyl silicon resin for moderate-refractive-index LED and preparation method thereof

InactiveCN105153424AHigh refractive indexSolve the scarcity of speciesDisiloxanePolymer science
The invention discloses vinyl silicon resin for a moderate-refractive-index LED. The vinyl silicon resin is prepared from, by weight, 100-105 parts of phenyl trimethoxysilane, 10-20 parts of tetravinyl tetramethyl cyelo tetrasiloxane, 20-60 parts of distilled water, 30-50 parts of divinyl tetramethyl disiloxane, 100-200 parts of solvent and 3-5 parts of catalyst. The invention further provides a preparation method of the vinyl silicon resin. The phenyl trimethoxysilane, the tetravinyl tetramethyl cyelo tetrasiloxane, the distilled water, the divinyl tetramethyl disiloxane, the solvent and the catalyst are added into a container, the temperature is improved to be 40-60 DEG C, the constant temperature is kept for 4-8 hours while stirring, the temperature is improved to be 100-130 DEG C, constant-temperature reaction is performed for 4-8 hours while stirring, reaction liquid is subjected to washing with the distilled water till the reaction liquid is neutral, and then reduced-pressure distillation is performed under the condition that the temperature is controlled to be 200 DEG C and the pressure is controlled to be -0.096 MPa to obtain the vinyl silicon resin for the high-light-transmittance moderate-refractive-index LED. The vinyl silicon resin prepared by means of the preparation method is better in stability.
Owner:SHANGHAI INST OF TECH

Tetraethylene hexaphenyl bifunctional group-containing T10 polyhedral oligomeric silsesquioxane and preparation method thereof

The invention belongs to the technical field of organic and inorganic nano hybrid materials, and discloses T10 polyhedral oligomeric silsesquioxane containing tetraethylene hexaphenyl bifunctional groups and a preparation method of the T10 polyhedral oligomeric silsesquioxane. The preparation method comprises the following steps: dissolving vinyltriethoxysilane in isopropanol, and then adding into a mixed solution containing potassium methoxide and water to obtain tetrahydroxy tetravinyl cyclotetrasiloxane; the preparation method comprises the following steps: dissolving tetraethylene hexaphenyl bifunctional group T10 polyhedral oligomeric silsesquioxane in 1, 4-dioxane, adding phenylsilane and a catalyst, and reacting under the protection of inert gas to obtain the tetraethylene hexaphenyl bifunctional group T10 polyhedral oligomeric silsesquioxane. The method has the advantages of simple reaction process, definite product structure and excellent solubility in common solvents, and can be applied to intercalation modified montmorillonite, hydrotalcite and other inorganic materials to increase the interlayer spacing of the inorganic materials and the like.
Owner:国科广化精细化工孵化器(南雄)有限公司 +3

A kind of production technology of methyl vinyl silicone rubber

The invention relates to a production technology of high-transparency and high-vinyl methyl vinyl silicon rubber. The production technology comprises the following steps of performing primary filtering and fine filtering on DMC, so as to remove colored impurities including iron rust and the like; removing impurities from auxiliary materials, VMC and divinyltetramethyldisiloxane through vacuum bubble dehydration and physical dynamic adsorption; using a high-temperature and low-pressure dehydration technology, adding the dehydrated material into a polymerizing kettle, adding a catalyst, VMC and a termination sealing agent to polymerize, and balancing after the polymerizing is completed; preheating the balanced rubber material, and then sending into a low molecule removal device to remove low molecule and produce the rubber. The production technology has the advantages that the problems of easiness in crosslinking and broad distribution of molecular weight in the high-vinyl raw rubber are solved; in the low molecule removal process, the gradual heating manner is adopted, and the problems of falling and crosslinking of vinyl, instability of vinyl content, slight yellowing of a product and the like due to continuous high temperature of local part in the raw rubber production heating process are solved.
Owner:HUBEI XINGRUI SILICON MATERIAL CO LTD

Three-functional-group hyperbranched polysiloxane cross-linked high-strength and high-toughness composite hydrogel and preparation method thereof

ActiveCN113201151AA large amountStrong designability and controllabilityEpoxyCellulose
The invention discloses a three-functional-group hyperbranched polysiloxane crosslinked high-strength and high-toughness composite hydrogel and a preparation method thereof. The preparation method comprises the following steps: 1) adding 1 part by weight of cellulose nanofibril and 1-30 parts by weight of acrylamide and / or acrylate monomers into a container, adding 60-300 parts by weight of water, and conducting mixing to form a uniform solution; 2) under the condition of ice-water bath, adding 0.1-1 part by weight of hyperbranched polysiloxane with three functional groups simultaneously containing vinyl, epoxy group and alkyl and 0.0005-0.002 part by weight of initiator into the solution obtained in the step 1), uniformly conducting stirring, and conducting reacting at 25-60 DEG C for 4-48 hours to obtain high-strength and high-toughness composite hydrogel. The molar ratio of vinyl, epoxy group and alkyl in the three-functional-group hyperbranched polysiloxane is 10:(1-6):(1-6).
Owner:ZHEJIANG FORESTRY UNIVERSITY
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