32results about How to "Enhance internal bonding" patented technology

The invention provides hydrophobicity-enhanced heat-vulcanized silicone rubber and a preparation method thereof. The specific preparation method of the silicone rubber comprises steps as follows: divinyltetramethyldisiloxane is mixed with a mixed solution of concentrated hydrochloric acid, deionized water and ethanol, the mixture is mechanically stirred, ethyl orthosilicate is dropwise added, the mixture is subjected to hydrolytic condensation, methylbenzene is added for extraction and layering, methyl vinyl silicone resin is obtained, crosslinked polyethylene particles are added to the methyl vinyl silicone resin, the mixture is stirred uniformly and subjected to molding curing and vacuum heat treatment, and the polyethylene particle crosslinked methyl vinyl silicone resin is obtained; nano-montmorillonite, amorphous alumina and titanium dioxide are added to a polydimethylsiloxane prepolymer, the mixture is mixed and subjected to crosslinking and curing, and a reinforced material coated with organic silicone rubber is obtained; the polyethylene particle crosslinked methyl vinyl silicone resin, the reinforced material coated with organic silicone rubber, 2,4-dichlorobenzoyl peroxide, diphenyl silanediol and octamethylcyclotetrasiloxane are mixed uniformly, left to stand, subjected to open milling and secondary vulcanization, and the hydrophobicity-enhanced heat-vulcanized silicone rubber is obtained.

The invention relates to a phenolic plastic, discloses a modified phenolic molding compound with high bending strength and a preparation method of the modified phenolic molding compound, and solves the problems that properties such as tensile strength and flexural modulus of a phenolic molding compound are reduced when brittleness of the phenolic molding compound is reduced in the prior art. The modified phenolic molding compound with the high bending strength comprises the following raw materials, in parts by mass: 200 parts of thermosetting phenolic resin, 4-6 parts of 2-formyl-3,4-dihydropyran, 3-5 parts of polyvinyl alcohol, 0.2-4 parts of a demolding auxiliary agent, 7-12 parts of a filler, and 2-3.5 parts of a pigment, wherein the thermosetting phenolic resin is liquid thermosettingphenolic resin; and the method comprises the steps of firstly mixing the 2-formyl-3,4-dihydropyran and the thermosetting phenolic resin for a reaction, then adding the polyvinyl alcohol, performing areaction under mixing, adding the demolding auxiliary agent, the filler and the pigment, performing mixing, and performing plastication to obtain the modified phenolic molding compound. According to the method provided by the invention, the rigidity and toughness performance are improved while the brittleness of the modified phenolic molding compound is reduced.

The invention discloses a novel electronic material with high thermal stability and a preparation method thereof and belongs to the field of high molecular materials for electronics. The preparation method comprises the following steps: Firstly, after carrying out chain expanding on nano silicon dioxide through polyacrylic acid, mixing with tetraethylenepentamine and polyethylenimine to prepare aminated nano silicon dioxide; then grafting the nano silicon dioxide with an epoxy group under the action of isocyanate; then grafting a flexible chain section containing hydroxyl on the nano silicon dioxide grafted with the epoxy group under the action of alkaline amine, so as to prepare modified nano silicon dioxide; finally, mixing epoxy resin, filler, a diluting agent, the aminated nano silicondioxide, the modified nano silicon dioxide, epoxidized soybean oil and a catalyst to prepare the novel electronic material with high thermal stability. The novel electronic material with high thermalstability, prepared by the technical scheme, can have very good utilization performance under a high-temperature condition.

The invention belongs to the technical field of friction materials, and particularly relates to a friction material and a preparation method thereof. The friction material is composed of synthetic fibers, magnesium oxide, aluminum oxide, barium sulfate, boron oxide, sodium bicarbonate, tert-butyl hydroquinone, ethanol and a structure enhancer. The raw materials of the friction material are matchedwith each other to prepare the friction material, the defects that the friction material has strength difference, is easy to oxidize and poor in wear resistance are improved, and the problems that the manufacturing process is complex, the consumed time is long, and the production cost is high are solved, the friction material has a special elastic effect, the performance problem of a traditionalfriction material can be changed, the wear resistance of the friction material is improved, the friction material is light in texture, environment-friendly and anti-oxidation, high pressure resistanceand material selection are achieved, and noise pollution caused by friction is effectively avoided.

The invention relates to the technical field of preparation of building materials, in particular to a preparation method of a non-burnt environment-friendly water permeable brick. According to the preparation method, firstly, the porosity of basalt is modified and increased, and the pore diameter of the basalt is further broadened by utilizing an ice splitting function, so that the basalt has more abundant pore channels so as to be provided for water molecules to pass through, and the water permeation rate of a brick body can be increased by using the basalt as a raw material of the non-burnt environment-friendly water permeable brick; then, silicon hydroxyl groups are added on the particle surface of the basalt, high-bond energy chemical bonding can be generated by utilizing the silicon hydroxyl groups on the surface of the basalt and silicon hydroxyl groups in silicate cement, and the internal bonding strength of the non-burnt environment-friendly water permeable brick is increased, so that the problem that the mechanical performance of a common non-burnt water permeable brick is not ideal is solved; in addition, with the enhancement of the internal bonding strength, required compression molding pressure is reduced while the same molding effect is achieved, so that the porosity of the non-burnt environment-friendly water permeable brick is increased, the water permeability of the non-burnt environment-friendly water permeable brick is further increased, and a wide application prospect is obtained.

The invention discloses an anti-stretch rubber seal ring material and a preparation method thereof. The anti-stretch rubber seal ring material is composed of the following raw materials: high impact polystyrene, nano white carbon black, anti-aging agent RD, insoluble sulfur, 3-aminopropyl trimethoxy silane, zinc dialkyl dithiophosphate, modified zinc oxide, diisobutyl phthalate and coco fatty acid diethanol amide. According to the invention, high impact polystyrene is used as the main material and has cheap price, excellent impact resistance and excellent anti-stretch performance, moreover, modified zinc oxide is also added in the raw material, thus, internal binding force of the rubber seal ring can be enhanced, and the properties of the rubber seal ring, such as stretch resistance, high temperature resistance, metal cohesive property and mechanical property, are improved effectively.

The invention discloses a heat-resistant and ozone-resistant rubber sealing ring material and a preparation method thereof. The rubber sealing ring material is prepared from the following raw materials: chlorinated butyl rubber CBK-139, white carbon black obtained by a precipitation method, an anti-aging agent ODA (bis(4-octylphenyl)amine), an accelerant M, methyl triethoxysilane, hydroquinone, modified bentonite, chlorcosane and a dispersing agent NNO. The chlorinated butyl rubber CBK-139 used as a main material is low in price and good in heat resistance and flexing resistance; the modified bentonite is added into the raw materials, so that the inner bonding force of a rubber sealing ring is enhanced. As a result, the tensile resistance, high-temperature resistance, metal bonding property, mechanical property and the like of the rubber sealing ring are effectively improved.

The invention relates to an elastic O-shaped rubber sealing ring and a preparation method thereof, and belongs to the technical field of sealing. As trifluoropropyl is introduced in a silicone chain,fluorosilicone rubber can have performance of fluororubber such as fuel resistance and solvent resistance on the basis of keeping a series of excellent performance of methyl silicone rubber like highand low temperature resistance, weather resistance, compression recovery, resilience, demolding property, etc.; through the polymerization with triethoxyvinylsilane, high molecular weight fluorosilicone raw rubber with stable quality can be prepared; and the elastic O-shaped rubber sealing ring can be prepared by adding modified hydrotalcite as a structure control agent, a heat-resistant stabilizer and other auxiliary agents. The elastic O-shaped rubber sealing ring has good heat resistance, wear resistance and aging resistance; and the internal binding force of the rubber sealing ring can beincreased by adding the modified hydrotalcite, so that the tensile resistance, aging resistance, wear resistance, heat resistance, adhesion to metals and physical properties of the rubber sealing ringcan be effectively enhanced, and the sealing ring is small in compression permanent deformation and good in elasticity.

The invention relates to an insulating heat-conducting gasket which comprises an insulating heat-conducting material, a high-molecular polymer and a binder. The insulating heat-conducting material is of a two-dimensional sheet-shaped structure, the two-dimensional sheet-shaped structure is oriented in the thickness direction of the insulating heat-conducting gasket, the high-molecular polymer is filamentous to connect the two-dimensional sheet-shaped structure, and finally penetrates through the interior of the insulating heat-conducting gasket; a two-dimensional heat-conducting filler is selected from at least one of boron nitride, aluminum nitride and silicon carbide.

The invention discloses a motor anti-corrosion coating, the anti-corrosion coating is applied on a motor stator and end caps mounted at both sides of the motor stator. The anti-corrosion coating comprises a basic layer and a surface layer from the inside to outside, the basic layer is directly sprayed on the motor stator and the end caps, and the surface layer is sprayed on the basic layer; the basic layer is prepared from the following components (in parts by weight): 40 to 50 parts of acrylic acid/ epoxy resin primer; 5 to 8 parts of nano-sized TiO2 particles, 5 to 8 parts of zinc oxide nano particles, 5 to 15 parts of aluminosilicate-based glass beads; 1 to 5 parts of xylene; the surface layer is prepared from the following components (in parts by weight): 90 to 95 parts of silicone polyurethane resin paint/vinyl perchloride anticorrosion varnish; 5 to 10 parts of acrylic acid/epoxy resin primer; 1 to 6 parts of silica sol; 1 to 3 parts of cobalt nitrate; 1 to 3 parts of cerous nitrate.

The invention discloses a modified alum-containing rubber seal ring material and a preparation method thereof. The material is prepared from the following raw materials: chloroprene rubber CR322, carbon black N339, accelerant CZ, alumina, crosslinking agent TAIC, antioxidant 1010, modified alum, tributyl citrate and sodium laurylsulfate. The material is prepared by adopting choroprene rubber CR322 as a main material, is low in price, has good performances of heat resistance, oil resistance and flame retardance; the modified alum is added in the raw materials, so that the internal binding force of the rubber seal ring can be enhanced, and the tensile strength, aging resistance, wear resistance, heat resistance, metal binding property, mechanical performance of the rubber seal ring can be effectively improved.

The invention provides a high-strength fiber cement composite board and a preparation method thereof. The method comprises the following steps: implanting quantum energy into natural water so as to change a water molecular structure and form quantum-state micro-molecular water; adding the cement and the water implanted with the quantum energy into a stirring tank, and uniformly stirring to mix into cement paste; adding plant fibers into a stirring mill, spraying the cement paste to the plant fibers in the stirring mill which is started at the same time according to a ratio, and performing grinding and stirring to form slurry; paving the stirred and ground slurry into a board blank with the upper part and the lower part clamped in glass fiber cloth, rolling and forming, and curing to obtainthe fiber cement composite board. According to the method, the strength of the fiber cement composite board is improved by changing the phase structure, specifically, under the condition that raw materials are not increased, the internal binding force is enhanced by changing the phase structure of the board, and the strength of the magnesium fiber cement composite board is improved.

The invention provides a processing method of dried fish meat slices. The processing method comprises the following steps of firstly, removing heads, tails and internal organs of fresh caught hairtail, cleaning, and cutting into sections to obtain hairtail sections; then soaking the hairtail sections in a compound bacteria solution I, performing primary fermentation, taking out the hairtail sections, washing the hairtail sections, draining the hairtail sections to obtain pre-fermented hairtail sections, and then pickling the pre-fermented hairtail sections with a pickling solution to obtain pickled hairtail sections; and performing supercritical carbon dioxide fluid extraction treatment on the pickled hairtail sections, soaking the hairtail sections in compound bacteria liquid II containing camellia seed superfine powder, performing secondary fermentation, taking out the hairtail sections, draining water to obtain fermented hairtail sections, and performing baking, vacuum packaging and sterilization to obtain the dried fish meat slices. The dried fish meat slice product makes up the market blank of lacking of dried fish meat slice products, is not easy to break, free of fishy smell and rich in flavor, and has a relatively high market popularization value.