45results about How to "High Shore hardness" patented technology

The invention discloses a production formula and a manufacturing method of a modified ultra-high molecular weight polyethylene resin. The modified ultra-high molecular weight polyethylene resin comprises an ultra-high molecular weight polyethylene resin, molybdenum disulfide, nano graphite, superfine talcum powder, ethylene bis stearamide, polytetrafluoroethylene and benzoyl peroxide. The modified ultra-high molecular weight polyethylene resin has ultra high wear resistance and favorable temperature tolerance and self-lubricating property. Compared with the resin before the modification, the modified resin has the advantages that the heat distortion temperature is increased by 38 DEG C, the Shore hardness is improved by 20 degrees, the friction factor is decreased by 40%, and the expansion factor is decreased by 30%. The modified resin is widely used for producing products such as gears, valves, artificial joints, skis, oil field transfer pipelines and the like.

The invention discloses high-power LED packaging adhesive composition which is prepared from the following raw materials in parts by weight: 10-90 parts of phenyl vinyl silicon resin, 0-5 parts of MDQ resin, 0.002-0.005 parts of a platinum catalyst, 15-40 parts of high-phenyl hydrogen-containing silicone oil or 20-50 parts of high-phenyl hydrogen-containing silicone resin and 0-3 parts of a tackifier, the phenyl vinyl silicon resin, the MDQ resin and the platinum catalyst form a component A; the high-phenyl hydrogen-containing silicone oil or the high-phenyl hydrogen-containing silicone resin and the tackifier form a component B; the vinyl content ratio of the component A to the component B is 1.1-1.4. A preparation method for the high-power LED packaging adhesive composition comprises the following steps: mixing the component A with the component B, defoaming, putting a defoamed mixture into a drying oven with the temperature of 80 DEG C for 2 hours, heating to 150 DEG C, keeping the temperature for 3 hours, and cooling to the room temperature to obtain the high-power LED packaging adhesive composition. The high-power LED packaging adhesive composition has the refractive index of more than 1.52 and the light transmittance of more than 95% before and after being cured, and is good in mercurochrome test effect, high in shore hardness and suitable for high-power LED packaging.

The invention discloses a smooth and delicate PVC door sealing material and a preparation method thereof. The smooth and delicate PVC door sealing material is composed of PVC resin, plasticizer, filler, feeling agent, elastomer, stabilizer, lubricant and antibacterial mildew preventive. The preparation method for the smooth and delicate PVC door sealing material includes the steps of weighing; powder mixing; mixing; extrusion forming and hot cutting. According to the smooth and delicate PVC door sealing material and the preparation method thereof, the problem that an existing soft PVC materialincreasingly cannot meet the requirements of the market for the surface softness and fine texture of the product is solved. A polar group in the feeling agent and a PVC material system generate an attachment point by H bond bonding, a smooth main chain in the feeling agent is attached to the surface of the PVC material to form a smooth and continuous film, a convex-concave phenomenon of the product surface is improved, the surface roughness and surface defects are reduced, the smoothness and softness are improved, the smooth and delicate texture degree of the product surface can be improved lastingly, and the smooth and delicate PVC door sealing material is suitable as a low temperature flexible refrigerator door sealing material.

The invention relates to a photosensitive resin composition for photocuring rapid prototyping as well as a preparation method and application of the photosensitive resin composition. The photosensitive resin composition comprises a cationic photocuring component, a free radical photocuring component, a cationic photoinitiator, a free radical photoinitiator, modified nano spherical silicon dioxide, hyperbranched epoxy resin, an antioxidant and a cationic thermal initiator. The photosensitive resin composition provided by the invention has high mechanical properties and shore hardness, and the dimensional stability and heat resistance of a later model are high.

The invention relates to a method for improving the shore degree of sound insulation cotton. The method comprises the following specific steps: weaving to obtain a light metal net layer and a hollow metal net layer; embedding elastic reinforcing ribs in a foam plastic layer; penetrating an elastic layer, drilling holes on the elastic layer, and filling light metal fiber; embedding mixed fibers in a soft resin plate layer; carrying out laminating treatment on the mixed fiber layer; and finally, stacking the layers in sequence, hot-pressing and pressing to obtain the sound insulation cotton, and sealing the edge by using an anti-aging film. According to the designed method for improving the shore hardness of the sound insulation cotton, double-layer woven metal nets are additionally arranged in the sound insulation cotton, the resin plate and the elastic layer are arranged between the metal nets, and the sound insulation effect and shore hardness of the sound insulation cotton are improved through the metal nets, the resin plates and the elastic layers; and the shore hardness and the sound insulation effect are further enhanced through the mixed fibers on the surface layer, so that the shore degree and the sound insulation effect of the sound insulation cotton are integrally improved, and the sound insulation cotton has good market potential value and application prospect and has practicability and creativity.

The invention discloses a specific acidic plastic plate for photovoltaic diamond wire cutting and a preparation method thereof. The plastic plate comprises the following raw materials: matrix resin and an auxiliary agent, and is prepared through the steps of raw material mixing, granulation, extrusion molding, polishing, cutting, detection, packaging and the like. The plastic plate prepared by theinvention meets the requirement of a large circulation system of a diamond wire cutting process, is easy to recycle, can be recycled, and meets the environmental protection requirement of continuousutilization; in a silicon rod cutting process using the diamond wire, impurities adhering to the diamond wire are reduced, the abrasion probability of the diamond wire is reduced, the cost is saved, the superior product rate of silicon wafers is increased, and therefore the production efficiency is effectively improved. Compared with the prior art, the prepared plastic plate is better in shore hardness and equivalent in pH value and conductivity, and has remarkable progress.

The invention provides a high-strength sealant for an electronic product and a preparation method of the high-strength sealant. The high-strength sealant is prepared from the following components: waste rubber, epoxy resin, acrylic acids, monolauryl phosphate, dioctyl phthalate, polyether polyol, nano calcium carbonate, titanium dioxide, epoxidized soybean oil, modified lignin, isocyanate, a silane coupling agent, an amine catalyst and an antioxidant. The sealant prepared according to the preparation method provided by the invention has good pressure flow viscosity, Shore hardness, elongationat break and tensile strength, is high in pressure tightness, firm in adhesion, long in service life, excellent in performance and wide in application range; the preparation method is simple, and theraw material cost is relatively low; therefore, the high-strength sealant is suitable for industrial large-scale production.

According to one embodiment, a light-emitting unit (2) which emits light, a wavelength conversion unit (8) which includes a phosphor and which is provided on a main surface of the light-emitting unit, and a transparent resin (9) which is provided on top of the wavelength conversion unit, are prepared. The transparent resin has a greater modulus of elasticity and/or a higher Shore hardness than the wavelength conversion unit (8).

A thermo-forming foil or plate made of a thermoplastic elastomer for the production of dental splints. To integrate reinforcements for various applications into individual areas of the splint, the thermo-forming foil or plate is made of segments comprised of different materials and lying side by side in the plane of the thermo-forming foil or plate, these materials having different Shore hardness.

The invention discloses a modified kaolin waterproof sealant and a preparation method thereof. The modified kaolin waterproof sealant is prepared from the following raw materials in parts by weight: 22 to 36 parts of hydrophobic modified kaolin, 11 to 16 parts of bisphenol A epoxy resin, 8 to 13 parts of palmitic acid, 9 to 14 parts of EPA, 11 to 15 parts of lignoceric acid, 7 to 13 parts of silicone oil, 10 to 15 parts of glass fiber, 4 to 7 parts of porcelain powder, 5 to 9 parts of asbestos powder, 3 to 7 parts of quartz powder, 4 to 17 parts of mica powder, 1.5 to 5 parts of plasticizers,1 to 4 parts of curing agents, 1.2 to 3 parts of anti-freeze agents, 2 to 4.5 parts of antioxidants, 1 to 3 parts of coupling agents and 1.5 to 3 parts of accelerants. The modified kaolin waterproof sealant is prepared through the steps of pulping, crosslinking reaction, precipitation, vacuum reaction, stirring, cooling, packaging, sealing and the like. The modified kaolin waterproof sealant has the advantages that the surface drying time and the gelation time are short; the strength and the hardness are high; the viscosity is high.

The invention relates to an additive with a functional group double-terminated structure as well as a preparation and application of the additive. The additive has a chemical structural formula as shown in the specification, wherein n is an oxidation state of metal M and is equal to 2, 3 or 4; A is one of oxygen, sulfur, carbon, nitrogen, phosphorus and silicon, and x is larger than or equal to 0and is smaller than or equal to 10; B is one of oxygen, sulfur, carbon, nitrogen, phosphorus and silicon, and y is larger than or equal to 0 and is smaller than or equal to 10; (AxBy)m shows that atoms are connected by chemical bonds, and x and y are not zero at the same time; m is larger than or equal to 0 and is smaller than or equal to 10; z is smaller than or equal to 50; R1 and R2 are aliphatic chains, alicyclic hydrocarbons or aromatic compounds of which the carbon atom numbers do not exceed 50; and F1 and F2 are organic groups with functional groups and have different structures. The additive prepared by using the preparation method can be introduced to rubber compositions so as to comprehensively improve the hardness, wet skid resistance, dynamic mechanical property and tensile property of rubber, and even, in parts of exemplary embodiments, the rubber compositions containing the additive with the functional group double-terminated structure have improved Shore hardness, elongation at break and wet skid resistance.

The invention discloses a graphite modified polytricyclopentadiene PTCPD composite material and a preparation method thereof. The composite material comprises graphite and tricyclopentadiene, and the graphite and the tricyclopentadiene are polymerized into a polytricyclopentadiene/graphite composite material under the action of a catalyst. The graphite is expanded graphite or graphite oxide modified by a surfactant or a coupling agent. The graphite modified polytricyclopentadiene composite material provided by the invention solves the technical problems of insufficient rigidity and poor heat resistance of a polydicyclopentadiene material in the prior art, and through graphite modification, the composite material has better heat resistance, the surface of the material is not easy to thermally deform, and the wear resistance is enhanced. The graphite modified polytricyclopentadiene composite material also has the excellent characteristics of acid resistance, alkali resistance, brine corrosion resistance, halogen gas corrosion resistance, fatigue resistance and the like, and is wide in application range.

The invention provides an ultraviolet curing epoxy adhesive and a preparation method and application thereof. The ultraviolet curing epoxy adhesive is prepared from the following raw materials in parts by weight: 30-60 parts of basic epoxy resin, 20-30 parts of toughened epoxy resin, 10-30 parts of an epoxy diluent, 1-5 parts of a photoinitiator and 1-10 parts of an auxiliary agent, wherein the basic epoxy resin, the toughened epoxy resin and the epoxy diluent all have symmetrical molecular structures. By adding the basic epoxy resin, the toughening epoxy resin and the epoxy diluent which are symmetrical in molecular structure, the prepared ultraviolet curing epoxy adhesive can resist high-concentration acid-base etching liquid, is easy to trim and tear when used as UV glass edge sealing adhesive, is free of solvent addition in the preparation process, and meets the environment-friendly requirement; and the viscosity of the adhesive can be adjusted according to actual requirements.

The invention discloses a method for producing a wood plastic wallboard. The method comprises the following steps: drying calcium sulfate to remove water, mixing calcium sulfate, an aluminate couplingagent, stearic acid and oxidized polyethlene wax in a high/low-speed mixing machine, crushing the plant fiber, grinding the plant fiber to obtain plant fiber powder, drying the plant fiber powder, during the process, and adding a modifier and oxidized polyethlene wax to obtain modified plant fiber; uniformly stirring waste plastic, modified plant fiber, a modified functional material and other auxiliary agents at the temperature of 60 DEG C, 85 DEG C, 100 DEG C and 125 DEG C in order and mixing the materials to obtain a mixture, and processing the mixture to obtain the wallboard. The functional material is synthesized, during the process, a coupling agent, stearic acid and oxidized polyethlene wax can be fusion, the materials are fully attached on the surface of calcium sulfate for modification, the material, the plastic, wood powder and other chemical raw materials are subjected to a full chemical reaction while mixing, and the impact strength resistance and shore hardness can be increased for the product.

The invention provides a blended polymer material of polyalkyl methacrylate and silicone rubber as well as a preparation method and application thereof. Under the compatibilization and dispersion effects of a compatibilizer, an in-situ polymerization method is adopted, polyalkyl methacrylate is used as a dispersion phase to be dispersed in a continuous phase of a polysiloxane network to form an island structure, and hundred-nanometer-scale polymethacrylate reinforced particles are generated in situ in an organosilicon polymer. The preparation of the polyalkyl methacrylate and silicone rubber blended polymer material with comprehensive excellent performance is realized, the bonding performance and hardness of the silicone rubber are remarkably improved, excellent mechanical strength and good breaking elongation are achieved, the damping temperature range is widened, and the preparation cost of the silicone rubber is greatly reduced. And the high-temperature storability and the high-temperature usability are relatively stable.