34results about How to "Deep curing fast" patented technology

The invention discloses two-component silicone sealant for a solar module resisting damp, heat and ageing and a preparation method thereof. The sealant consists of a component A and a component B, wherein the component A adopts polydimethylsiloxane as the major material; and the component B comprises dispersion mediums, fillers, cross linking agent, coupling agent and catalyst; the component A comprises the following components in parts by weight: 100 parts of a, omega-dihydroxy polydimethylsiloxane with viscosity of 5000-50000cps, 3 to 20 parts of plasticizer and 50 to 150 parts of fillers; the component B comprises the following components in parts by weight: 100 parts of dispersion mediums, 10 to 45 parts of fillers, 20 to 50 parts of cross linking agent, 5 to 40 parts of silane coupling agent and 0.5 to 2 parts of catalyst; and the ratio of the component A to the component B in parts by weight is 100: (10-20). The sealant has the advantages of fast deep curing, wide adhesion, high strength of normal temperature and excellent resistance to damp, heat and ageing; after ageing for 1000 hours under the double-85 condition, the strength retention rate can be up above 80%; and the sealant is suitable for machine gluing, can largely improve module productivity, and adapts to the requirements of solar module mass production.

The invention provides a reaction type polyurethane hot melt adhesive as well as a preparation method and application thereof. The reaction type polyurethane hot melt adhesive is prepared from the following raw materials with the components in parts by weight: 100-120 parts of polyester polyol, 1-150 parts of polyether polyol, 50-100 parts of isocyanate, 50-350 parts of a modifier, 1-5 parts of achain extender, 1-5 parts of an antioxidant and 0.01-0.1 part of a catalyst, wherein the mass percentage of ethylene oxide in the polyether polyol is 40-50%; the hydroxyl value is 21-112KOH/mg; the modifier consists of a tackifying resin and a filler in a mass ratio of 1-6 to 1. Due to the addition of the polyether polyol with ethylene oxide of a specific mass content, and under coactions of the modifier of components of specific contents, the water permeability of a hot melt adhesive before curing is improved, and the obtained product is good in high-temperature flow-free property, relativelyrapid deep curing property and excellent thixotropy, and can be used as a hot melt adhesive for vehicle lamps.

The invention belongs to the technical field of encapsulating materials, and discloses a low-shrinkage heat-conducting flame-retardant double-component condensed type organosilicone pouring sealant, and a preparation method and application thereof. The organosilicone pouring sealant consists of a component A and a component B, of which the weight ratio of (10:1) to (5:1), wherein the component A consists of the following raw materials in parts by weight: 100 parts of a base adhesive, 30 to 80 parts of a plasticizer A, 0.01 to 3 parts of a coloring material and 0.1 to 1 part of a curing accelerant; and the component B consists of the following raw materials in parts by weight: 80 to 300 parts of a crosslinking agent, 10 to 60 parts of a coupling agent, 0.5 to 1.5 parts of a catalyst and 100to 500 parts of a plasticizer B. The base adhesive consists of the following raw materials in parts by weight: 100 parts of liquid silicone rubber, 3 to 10 parts of reinforcing filler, 20 to 80 partsof heat-conducting filler, 20 to 100 parts of flame-retardant filler, 3 to 10 parts of a surface treating agent and 3 to 20 parts of functional filler.

The invention relates to an ultraviolet-curable resin composition and a fiber reinforced resin-based composite material thereof, and belongs to the technical field of light curing technologies and resin-based composite materials. The ultraviolet-curable resin composition comprises, by weight, 90-110 parts of epoxy resin, 0.1-0.7 parts of a cationic photoinitiator, 0.1-0.5 parts of a thermal initiator, 0-1 part of a photosensitizer, 0-35 parts of an active diluent and 0-30 parts of an additive. The ultraviolet-curable resin composition initiates a cationic polymerization reaction under the irradiation of ultraviolet light; and heat release of the polymerization reaction and the decomposition of the cationic photoinitiator commonly urges the thermal initiator to decompose in order to initiate a self propagating wave polymerization reaction. The ultraviolet-curable resin composition has the advantages of fast curing speed, high curing thickness, and realization of one-stage rapid deep curing. The fiber reinforced resin-based composite material with the composition as a matrix phase has good tensile strength, and curing is not affected by the laying layer number of fibers or the light transmission of a reinforcing phase.

The invention discloses an anti-corrosion organic silicon adhesive for inner wall of desulfurization chimney and a preparation method thereof. The preparation method comprises following steps: preparing a component A, mixing 107 silicone rubber, fumed silica, silicon powder, silicone oil, kaolin, and a deep curing addictive together to prepare the component A; preparing a component B, mixing a cross-linking agent, tackifier, catalyst, silicone oil, fumed silica and carbon black to prepare the component B, and mixing the component A and the component B according to a certain ratio to prepare an anti-corrosion organic silicon adhesive for inner wall of desulfurization chimney. The anti-corrosion organic silicon adhesive for inner wall of desulfurization chimney has the advantages of high tensile strength, excellent elongation at break, high shear strength, long operation time, convenience for on-site construction, fast deep curing, and good adhesivity and elasticity, and is capable of applying to the fields of anti-corrosion of inner wall of desulfuration chimney and adhesive bonding and coating of various light glass bricks.

The invention discloses a double-component silane modified polyether sealant with a controllable curing speed, which comprises a component A and a component B, wherein the mass ratio of the componentA to the component B is 1-100:1, and the component A comprises 25-50 parts of silane modified polyether resin, 5-15 parts of a plasticizer, 5-20 parts of nano calcium carbonate, 30-50 parts of siliconmicropowder, 0.5-3 parts of a ultraviolet absorbent, 0.5-1 part of carbon black, 1-3 parts of vinyl trimethoxy silane, 5-10 parts of an amino coupling agent and 0.1-0.5 part of chelated tin; the component B comprises, by mass, 20-30 parts of epoxy resin, 20-30 parts of a plasticizer, 10-20 parts of silicon micropowder and 5-20 parts of an accelerator. According to the invention, rapid deep curingof the component A can be achieved through the promotion effect of the component B, and the strength is increased, so that the shear strength can reach 1.5MPa within 4h, and the shear strength can reach 2.3MPa within 24h.

The invention relates to a prepreg rapidly cured at room temperature. The prepreg comprises a resin composition and a fiber-reinforced fabric, wherein the resin composition is prepared through uniformly mixing the following raw materials at room temperature in a shaded manner: resin, a photoinitiator, a thermal initiator, a reactive diluent and additives, and is viscous liquid; a flaky prepreg isprepared through dipping the fiber-reinforced fabric with the resin composition and sticking a black barrier film on the fiber-reinforced fabric; and when a composite product is prepared through subjecting the prepreg to tailoring, sticking and curing, the curing process conditions are as follows: the time of irradiation by an ultraviolet light source at room temperature is 10 to 30 seconds, and the time of curing placement is 0.1 to 5 minutes. According to the prepreg, room-temperature rapid curing can be carried out by using autologous reaction heat by only irradiation under the ultravioletlight source without supplying energy to a reaction system, heating and adding of other chemicals are not required during molding, a postcuring procedure is also not required, and thus, the aim of room-temperature rapid curing is achieved.

The invention relates to an organosilicon sealant and a preparation method thereof, wherein the organic silicon sealant is prepared from the following raw materials in parts by weight: 90 to 110 partsof alpha,omega-dihydroxy polydimethylsiloxane, 10 to 150 parts of a reinforcing filler, 2-10 parts of a plasticizer, 2-20 parts of a cross-linking agent, 2-10 parts of a curing agent, 1-10 parts of acoupling agent, and 0.01-1.5 parts of a catalyst. The organosilicon sealant provided by the invention can realize rapid deep curing, and has good hardness and good mechanical properties.

The invention relates to an organic silicon pouring sealant for LEDs. The organic silicon pouring sealant for LEDs is characterized by comprising the following components (in parts by weight): 90-100 parts of low-viscosity 107 glue, 1-5 parts of hydroxyl end-capping silicone oil, 2-5 parts of methyl silicone oil, 1-5 parts of methyl fluorosilicone oil , 5-10 parts of a cross-linking agent, 1-5 parts of a cross-linking agent and 1-5 parts of a catalyst. The preparation method comprises: adding the low-viscosity 107 glue, the hydroxyl end-capping silicone oil, the methyl silicone oil and the methyl fluorosilicone oil into a stirrer in formula to be stirred for 30 minutes at a high speed, and carrying out vacuum pumping to remove air bubbles to obtain a mixture II; taking the mixture I as base glue; adding the cross-linking agent, the coupling agent and the catalyst according to the formula to be uniformly mixed to obtain a mixture II, and taking the mixture II as an auxiliary gent; and uniformly mixing the base glue with the auxiliary agent in a ratio of the base glue to the auxiliary agent being 10:1, thereby obtaining the organic silicon pouring sealant for LEDs. The organic silicon pouring sealant disclosed by the invention is excellent in bonding force, high in transparency, good in bubble discharge, quick in deep-layer curing and free of yellowing. The organic silicon pouring sealant can be used for protecting the LEDs from invasion of the external environment for a long time.

The invention relates to a method for preparing a fiber-reinforced resin-based composite material by cationic photocuring and a resin composition thereof, belonging to the technical fields of photocuring technology and resin-based composite material. In the formula of the cationic photocurable resin composition, the ingredients and parts by weight of each raw material are as follows: 90-110 parts of epoxy resin, 0.1-10 parts of cationic photoinitiator, 0-10 parts of photosensitizer, and 0-35 parts of reactive diluent. parts, 0-30 parts of additives. The ultraviolet curable resin composition of the present invention is prepared by a method of photoinitiating and dispersing active centers to obtain a fiber-reinforced resin-based composite material, which has the advantages of low curing energy consumption, fast curing speed, and large curing thickness, and can realize one-time rapid deep-layer curing. The fiber-reinforced resin-based composite material prepared by the composition and method has good tensile strength, and can solve the problem of light-cured thickness of an opaque system or a thick-size system.

The invention provides a 1,2-ditrialkoxy silane crosslinking agent and a preparation method and application thereof. The 1,2-ditrialkoxy silane crosslinking agent has the structure as follows: (R1O)3SiCH2CH2(CH2)nSi(R2O)3, wherein the R1 and the R2 are independently any one of -CH3, -CH2CH3 or -CH2CH2CH3, and the n is an integer of 0-3. The 1,2-ditrialkoxy silane crosslinking agent prepared by means of the preparation method can strengthen the compatibility of a crosslinking agent and siloxane and has wide application prospect, deep curing is fast, the curing depth within 24 hours can reach 3-7 mm, and the shortcoming that a domestic dealcoholization type sealant is slow in deep curing can be overcome.

The invention discloses UV (ultraviolet) optical adhesive, made from, by weight, 30-60 parts of an acrylate oligomer, 30-50 parts of an acrylate monomer, 1-4 parts of a photopolymerization initiator,and 3-5 parts of an adhesion promotion aid. The UV optical adhesive has the advantages that the finished adhesive has reliable indexes, the yield is increased, fewer defects are shown to customers, mobility and curing speed of the adhesive are increased, and coating speed is increased so that production efficiency is improved.

The invention relates to a low-temperature, low-humidity and rapid-curing polyurethane composition and a preparation method thereof. The polyurethane composition comprises a polyurethane prepolymer P1, a polyurethane prepolymer P2, a polyurethane prepolymer P3, a modified filler, carbon black, a plasticizer, a catalyst and an adhesion promoter. The polyurethane composition provided by the invention can be quickly cured under low-temperature and low-humidity conditions through the matching of the polyurethane prepolymer P1, the modified filler and other components, and has the advantages of wide application and convenience in construction.

The invention relates to a silicone sealant for rail transit and a preparation method thereof. The silicone sealant is prepared from the following raw materials in parts by weight: 100 parts of base rubber, 50-120 parts of dimethyl silicone oil, 50-180 parts of calcium carbonate, 5-15 parts of a cross-linking agent, 1-5 parts of a silane coupling agent, 0.5-5 parts of polysilazane and 0.05-1 partof a catalyst, wherein the base rubber is alpha,omega-dihydroxy polydimethylsiloxane. According to the silicone sealant, the bulging phenomenon under the condition of large day and night temperature difference is improved, deep curing is accelerated, mechanical properties are obviously improved, and a storage period is greatly prolonged.

The invention discloses a water-soaking-resistant flame-retardant single-component silane modified polyether sealant which comprises the following components in parts by weight: 100 parts of silane-terminated modified polyether, 8-15 parts of a plasticizer, 18-40 parts of a pigment and filler, 12-36 parts of a flame retardant, 1-6 parts of a thixotropic agent, 0.02-1 part of an ultraviolet light absorber, 0.02-1 part of an ultraviolet stabilizer, 2-6 parts of a cross-linking agent, 0.2-2 parts of a dewatering agent, 1-4 parts of a self-made tackifier, and 0.1-0.8 part of a catalyst. The self-made tackifier is organic silicon modified epoxy resin synthesized by reacting an organic silicon oligomer with at least two hydrolysable alkoxy silane at one end with epoxy resin, wherein alkoxy is methoxy, ethyoxyl or propyl. The invention also discloses a preparation method of the sealant. According to the invention, the water soaking resistance, flame retardance and adhesive property of the single-component modified silane polyether sealant are improved, so that the double requirements of buildings on water resistance and flame retardance of the sealant are met at the same time.

The invention discloses a preparation method of a two-component hybrid adhesive. The preparation method comprises the following steps: 1) preparing a component A according to a formula ratio under a first dehydration condition; 2) preparing a component B according to the formula ratio under a second dehydration condition; and 3) uniformly mixing the component A and the component B according to a volume ratio of 1: (1-4) to obtain the double-component hybrid adhesive. The invention also discloses the two-component hybrid adhesive. According to the invention, the volume ratio of the component A to the component B can be adjusted according to the actual use condition of the double-component hybrid adhesive, such as the requirements on the operable time, the curing speed, the strength, the hardness and the like, so as to adapt to different performance requirements; and the component A and the component B can be hybridized, cured and crosslinked with each other to form a more complex spatial interpenetrating network structure, have more excellent stability and mechanical strength than a single cured network structure, can make up for the respective defects of an adhesive system adopting a single component, and can reinforce the respective advantages of the component A and the component B.