35results about How to "Guaranteed crosslink density" patented technology

The invention discloses a low-modulus monocomponent de-ketoxime type room temperature sulfurized silicone sealant and a preparation method thereof. The silicon sealant is prepared from hydroxyl end-blocked dimethylsiloxane, a plasticizer, white mineral oil, gas phase method silica aerogel, a reinforcing filler, aluminum stearate, pigment, a crosslinking agent, a vulcanization accelerator, a silane coupling agent and a catalyst. The preparation method comprises the following steps: 1) uniformly mixing the hydroxyl end-blocked dimethylsiloxane, the plasticizer, the white mineral oil, the gas phase method silica aerogel, the reinforcing filler, the aluminum stearate and the pigment, and drying the mixture fully to obtain a premix compound; 2) performing vacuum full kneading on the premix compound to obtain base; 3) adding the crosslinking agent, the vulcanization accelerator and the silane coupling agent into the base, performing vacuum stirring uniformly;4) adding the catalyst into the base, performing vacuum stirring uniformly, discharging the mixture, and performing filling and sealing. The low-modulus monocomponent de-ketoxime type room temperature sulfurized silicone sealant provided by the invention has the advantages of neutral solidification, strong bonding power, excellent mechanical property, and good heat resistance and oil resistance.

The invention belongs to the field of epoxy resin coating, and discloses a multi-carboxyl cage silsesquioxane (CSQ) modified epoxy resin and an application thereof in coating. The CSQ modified epoxy resin is prepared by following steps of throwing CSQ and epoxy resin into a reaction kettle according to the mass ratio of (1:4)-(1:7), adding a catalyst and an organic solvent, and mixing uniformly; reacting for 2-4 hours at 105-115DEG C, filtering and discharging, so as to obtain CSQ modified epoxy resin containing high activity hydroxyl; and then carrying out curing reaction on the hydroxyl and polyisocyanate group so as to prepare a high hardness quick curing coating, wherein the mass ratio of the organic coating to the curing agent is (30:50)-(70:25). The CSQ modified epoxy resin has high hardness, good abrasion performance and fast drying speed, so that the coating prepared based on the modified epoxy resin has advantages of high hardness, good toughness, fast drying speed, good shock resistance and good corrosion resistance.

The invention discloses high-infrared rapid-curing powder paint for coil steel. The high-infrared rapid-curing powder paint for the coil steel is prepared from, by weight, polyester resin, polyester-modified fluorocarbon resin with low molecular weight, a curing agent, a flatting agent, benzoin, packing and pigments. According to the powder paint, by adopting the polyester resin with the moderate viscosity and acid value to be compounded with the polyester-modified fluorocarbon resin with the low molecular weight, the coating surface condition and performance requirements are improved; curing can be achieved by performing high-infrared heating for 15-30 s, a cured powder coating is good in adhesive force and has the excellent weather resistance and alkali resistance. The powder paint has the advantages of being short in curing time, excellent in comprehensive performance and the like and can achieve energy conservation and environment protection.

The invention relates to an anti-PID ethylene vinyl acetate film comprising the following components: 80-99.69 parts by weight of EVA resin; 0.1-3 parts by weight of an organic peroxide crosslinking agent; 0.1 to 3 parts by weight of a cross-linking accelerator; 0.05 to 2 parts by weight of an anti-aging agent; 0.01 to 2 parts by weight of a silane coupling agent; and 0.05 to 10 parts by weight ofan anti-PID auxiliary agent. The invention also provides a package assembly and a packaging method thereof. The anti-PID auxiliary agent of the anti-PID film is resin having a carbon chain and a branched chain containing a plurality of hydroxyl groups, the structure of the resin is similar to the structure of a hydrolyzed product of the EVA resin, progress of EVA hydrolysis reaction can be suppressed, the EVA hydrolysis reaction can be effectively reduced, the crosslink density of the EVA film can be ensured, ions on the surface of the EVA and glass can be effectively blocked from accumulating on the surface of a battery, and the PID phenomenon of the assembly can be suppressed.

The invention discloses an environment-friendly organosilicon ''three-prevention'' coating and a preparation method thereof. The environment-friendly organosilicon ''three-prevention'' coating comprises the following components: (A) 80-100 parts by weight of vinyl silicone oil, (B) 0.1-10 parts by weight of a crosslinking agent, (C) 1-10 parts by weight of a reactive diluent, (D) 1-10 parts by weight of MQ silicone resin, (E) 1-10 parts by weight of hydrophobically modified white carbon black, (F) 0.1-0.5 part by weight of a reaction inhibitor, (G) 0.1-0.5 part by weight of a silicon hydrogenaddition reaction catalyst, (H) 0.1-0.5 part by weight of a photopolymerization initiator, and (I) 0.1-2 parts by weight of a tackifier. The environment-friendly organosilicon ''three-prevention'' coating provided by the invention effectively solves the problems that an existing organosilicon elastomer ''three-prevention'' coating is slow in curing speed and poor in adhesion and is not environmentally friendly.

The invention relates to an organosilicon sealing glue with moderate toughness, and a preparation method thereof, and belongs to the technical field of organosilicon sealing glues, wherein the organosilicon sealing glue comprises medium-viscosity [alpha],[omega]-dihydroxy polydimethylsiloxane, low-viscosity [alpha],[omega]-dihydroxy polydimethylsiloxane, dimethyl silicone oil, dimethyl dibutanoneoximido silane, polyethylene glycol, fumed titanium dioxide, nano-scale calcium carbonate, methyltriacetoxysilane, di-tert-butoxydiacetoxysilane, dioctyltin dilaurate, stannous octoate, and methylphenyl bis(N-methylacetamido)silane. The organosilicon sealing glue of the present has moderate toughness within a controlled range.

The invention relates to a method for improving zinc oxide sulfuration activity and belongs to the technical field of natural rubber processing. The method comprises adding 0.5-10 parts of rare earth oxide into 100 parts of common zinc oxide and carrying out ball milling and high temperature sintering rare earth doping. According to inherent characteristics of rare earth, zinc oxide particle conformation structure and ion surface chemical properties are changed, sulfuration activity is improved, a use ratio of zinc oxide in the rubber formula is reduced from 5: 100 to 2: 100, sulfuration time is shortened, natural vulcanized rubber crosslinking density and mechanical properties are improved and reasonable utilization and saving of a zinc ore resource are realized.

The invention relates to a high-strength flexible transparent wear-resistant hardened coating on the surface of a folding screen mobile phone and a preparation method thereof, and is characterized inthat the high-strength flexible transparent wear-resistant hardened coating comprises a UV-curable hardening liquid, which is prepared by uniformly mixing naphthalene ring type polyethylene glycol acrylate, a diluent, a photoinitiator and octavinyl-POSS. The hardness and wear resistance of the flexible transparent polymer film material can be improved, the rigid-flexible joint characteristic is good, the hardness and flexibility can be well combined, the wear resistance and hardness can be well combined, bending frequency of the coating is not limited, the bending resistance is good, and the wear resistance is good.

The invention discloses a self-adhesive single-layer high-magnification expansion rubber strip, which comprises the following components in parts by weight: 14-20 parts by weight of natural rubber; 4-9 parts by weight of butyl rubber; 0-4 parts by weight of modified urea Parts by weight; 40-50 parts by weight of filler; 9-20 parts by weight of tackifying resin; 9-17 parts by weight of blowing agent; 0.2-0.6 parts by weight of sulfur; 0.1-0.5 parts by weight of antioxidant; 0.2-0.6 parts by weight of accelerator Part; Solvent 4-14 parts by weight. The self-adhesive single-layer high-magnification expansion rubber strip of the present invention uses natural rubber and butyl rubber in combination as raw materials, so that the expansion rubber strip can not only ensure a certain crosslinking density, but also ensure a certain airtightness. AC foaming agent and PTSH foaming agent are used together to better improve and ensure the foaming ratio. The foaming ratio is increased to 500%-600%, and it is a single-layer structure, which improves the sound insulation and noise reduction effect of the product on the car.

The invention discloses an electronic crosslinking treatment device and method. The device comprises a scanning type electronic accelerator and a transmission device. The transmission device is composed of multiple cooling guide rollers, wherein the multiple cooling guide rollers are distributed into two columns to be located on the two sides of an electronic beam transmitting route of the scanning type electronic accelerator correspondingly. The multiple cooling guide rollers are of hollow structures, and cooling media are led in cavities. The electronic crosslinking treatment device is simple in structure and low in cost, due to the fact that the two columns of cooling guide rollers are arranged on the two sides of the electronic beam transmitting route of the scanning type electronic accelerator, a to-be-treated film material can bypass the two columns of the cooling guide rollers one by one in a left-right manner and stretches across the electronic beam transmitting route back andforth, an electronic beam is used for conducting multiples times of electronic crosslinking treatment on a film material, and therefore energy efficiency and crosslinking density of the scanning typeelectronic accelerator treating film type materials are improved; and in addition, due to a method that the cooling guide rollers communicate with cooling water, the heating and sticking problems caused after electronic crosslinking treatment of the film material are solved, and the production efficiency is further improved.

The invention relates to a method for improving zinc oxide sulfuration activity and belongs to the technical field of natural rubber processing. The method comprises adding 0.5-10 parts of rare earth oxide into 100 parts of common zinc oxide and carrying out ball milling and high temperature sintering rare earth doping. According to inherent characteristics of rare earth, zinc oxide particle conformation structure and ion surface chemical properties are changed, sulfuration activity is improved, a use ratio of zinc oxide in the rubber formula is reduced from 5: 100 to 2: 100, sulfuration time is shortened, natural vulcanized rubber crosslinking density and mechanical properties are improved and reasonable utilization and saving of a zinc ore resource are realized.

The invention discloses a high-toughness, anti-impact and high-flexibility epoxy pouring sealant. The high-toughness, anti-impact and high-flexibility epoxy pouring sealant is composed of a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight: 0 to 130 parts of toughening epoxy resin, 5 to 20 parts of bisphenol A type epoxy resin, 1 to 18 parts of an active diluent, 1 to 10 parts of a thixotropic agent and 160 to 320 parts of aluminum oxide; the component B is prepared from the following raw materials in parts by weight: 20 to 50 parts of a flexible curing agent, 25 to 50 parts of a hyperbranched curing agent and 1 to 5 parts of an accelerant; the mass ratio of the component A to the component B ranges from (10 to 1) to (20 to 1). According to a preparation method provided by the invention, the materials are prepared and mixed according to formulas of the component A and the component B respectively. The epoxy resin provided by the invention not only has rubber flexibility, but also has excellent heat-resisting performance and rigidity.

The invention relates to a coating system for an aerial aircraft. The coating system consists of an anti-corrosion coloring bottom coating and a weather-resistant transparent surface course coating matched in use, wherein the bottom coating consists of a component A1 and a component B1 in a mass ratio of (4-6): 1 and the surface course coating consists of a component A2 and a component B2 in a mass ratio of (1-4): 1; the component A1 comprises 15-30% of hydrogenated terpinene-maleic ester type epoxy resin, 2-10% of modified resin, 10-20% of coloring pigments, 10-20% of an environment-friendly anti-corrosion pigment, 5-15% of filler, 0.5-1% of auxiliaries and the balance of a solvent; the component B1 comprises 3-15% of liquid epoxy resin, 5-25% of polyamine with a primary amine and the balance of a solvent; the component A2 comprises 50-80% of polyhydric alcohol resin, 1-4% of auxiliaries and the balance of a solvent; and the component B2 comprises 60-90% of aliphatic polyisocyanate and the balance of a solvent. The coating system is light, good in comprehensive performance and time-saving in construction.

The invention discloses a low-temperature resin composition and a preparation method thereof. The preparation method of the low-temperature resin composition comprises the steps of adding 15 parts by weight of low-molecular weight polyester resin, 30-50 parts by weight of phenolic novolac resin, 0-15 parts by weight of polyvinyl butyral resin and 100-240 parts by weight of solvent to a reactor, stirring for 1-2 hours at 40-60 DEG C, cooling to a room temperature, next, adding 40-60 parts by weight of epoxy resin and 1-5 parts by weight of hexamethylenetetramine, stirring thoroughly for dissolving, and finally, adding 0.5-5 parts by weight of nano silicon dioxide, and thoroughly dispersing and evenly stirring to obtain the low-temperature resin composition. The invention provides a low-temperature resin mixture which can be used as a support structure at minus 196 to 130 DEG C for a glass fiber cloth reinforcing material; the low-temperature resin mixture is especially applicable to low temperatures, has the characteristics of high strength, good toughness, not easy cracking and the like at low temperatures, and is excellent in product properties and high in practicability.

The invention discloses a high-infrared fast-curing powder coating for coil steel, which is prepared from polyester resin, low molecular weight polyester modified fluorocarbon resin, curing agent, leveling agent, benzoin, filler and pigment in parts by weight , the powder coating of the present invention improves the surface condition and performance requirements of the coating by using polyester resin with moderate viscosity and acid value to compound low molecular weight polyester modified fluorocarbon resin, and can be cured by high infrared heating for 15-30s. After curing The powder coating of the invention has good adhesion, and has excellent weather resistance and alkali resistance; the powder coating of the present invention has the characteristics of short curing time, excellent comprehensive performance, etc., and can realize energy saving and environmental protection.

The invention relates to a coating composition for rapidly repairing a damaged skin coat of a spacecraft. The coating composition comprises a component A and a component B, wherein the component A comprises the following components in percentages by mass: 15%-25% of medium-high molecular weight epoxy resin, 2%-12% of modified resin, 15%-30% of conventional-type pigment and filler, 15%-30% of environment-friendly anti-corrosion paint, 0.5%-1% of additive and the balance of the solvent; the component B comprises the following components in percentages by mass: 60%-90% of epoxy-amine adduct, 10%-40% of epoxy-polyaminoalkoxysilane adduct, and the sum of epoxy-amine adduct and epoxy-polyaminoalkoxysilane adduct is 100%; before construction, the component A and the component B are evenly mixed at a mass ratio of (4 to 6): 1. The coating composition has excellent comprehensive performance which is comparable to that of the novel coating system, the repair time is shortened, the repair efficiency is increased, the wastes of energy and resources are decreased and the labor intensity of workers is reduced.