33results about How to "Adjust curing speed" patented technology

The invention discloses a double-solidification system fast-flowing underfill and a preparation method thereof. The underfill comprises the following raw materials in parts by weight: 30-80% of epoxy resin, 10-50% of epoxy acrylate, 5-30% of acrylate, 2-20% of polyol, 1-20% of silane coupling agent, 0.3-4% of cationic initiator, 0.1-3% of radical initiator and 0.1-0.5% of carbon black; and the preparation method comprises the following steps of: weighing the epoxy resin and the cationic initiator in the proportion, putting in a reaction kettle and stirring into a uniform solution; weighing the epoxy acrylate, the acrylate, the polyol, the silane coupling agent, the radical initiator and the carbon black in the proportion, putting in the reaction kettle in sequence, mixing and stirring to obtain the finished product of the double-solidification system fast-flowing underfill.

The invention relates to a two-component sealing adhesive with low viscosity and high thermal conductivity and a preparation method thereof. The two-component sealing adhesive consists of a component A and a component B in a weight ratio of 100:80-100:125, wherein the component A comprises the following raw materials by weight percent: 40.00%-90.00% of thermal conductive powder, 4.50%-50.00% of low-viscosity liquid silicone oil, 0.50%-10.00% of silicane curing agent and 0.00-5.00% of toner; and the component B comprises the following raw materials by weight percent: 40.00%-90.00% of thermal conductive material, 9.50%-54.00% of low-viscosity liquid silicone oil, 0.04%-1.00% of catalyst and 0.00-5.00% of toner. The preparation method comprises the following steps: weighting all the raw materials according to the weight persentages to prepare the component A and the component B; and when in use, mixing the component A and the component B evenly in a weight ratio of 100:80-100:125, and curing to obtain the sealing adhesive of the invention.

The invention relates to a foamed cement material and a production and a preparation method thereof. The foamed cement material comprises the following components in parts by weight: 32 to 58 parts of cement, 10 to 34 parts of solid waste materials, 2 to 7 parts of foamed hole conditioning agents, 0.2 to 0.5 part of foamed hole wall reinforcing agent, 2.5 to 7 parts of foaming agents, 0.1 to 0.5 part of foaming speed conditioning agent, 0.1 to 1 part of curing speed conditioning agent and the balance of water, wherein the content of all the components reaches 100% after proper amount of the water is added. The foamed cement is an inorganic heat preservation material with the integrated performance of fire prevention and energy conservation. The foaming ratio of the foamed cement material can be regulated by using the foamed hole conditioning agents, so that the heat conductivity coefficient of the foamed cement material is controlled in a definite range. Therefore, the foamed cement material can satisfy the heat preservation and thermal insulation requirements in cold areas and other areas hot in summer and warm in winter. The foamed hole wall conditioning agent, the foamed hole wall reinforcing agent, the foaming agents, the foaming speed conditioning agent and the curing speed conditioning agent are prepared into solutions, so that the transportation and the category of metering equipment are reduced, i.e. the equipment investment is lowered and the dust emission is reduced. As a result, the sanitary production is realized, and the environment-friendly requirement is satisfied.

The invention relates to a double curing encapsulating adhesive and a preparation method thereof. The double curing encapsulating adhesive comprises the following raw materials in percentage by weight: 35 to 60 percent of epoxy resin, 2 to 20 percent of polyol, 1 to 20 percent of silane coupling agent, 0.1 to 2 percent of photoinitiator, 0.1 to 2 percent of thermal initiator and 30 to 60 percent of filler. The double curing encapsulating adhesive provided by the invention with low contraction rate and high water resistance and cold and heat circulation resistance can effectively guarantee that encapsulated elements are reliable; the adhesive can cure quickly and completely under ultraviolet (UV) and heat while delivering quick positioning and excellent mechanical properties; with light smell after curing, the adhesive is environment-friendly; and with high storage stability, the adhesive is suitable to adhere electronic elements.

The invention relates to a high-temperature cured two-component pouring sealant and a preparation method thereof, and the heat-conducting pouring sealant is prepared by an A component and a B component according to the weight ratio of 100: 80-100: 125, wherein the A component comprises the following raw materials by weight percent: 45.00%-85.00% of heat-conducting powder, 14.00%-50.00% of low-viscosity liquid silicon oil, 0.15%-15.00% of silane curing agent, 0.005-0.02% of inhibitor, and 0.00-5.00% of color toner; and the B component comprises the following raw materials by weight percent: 45.00%-85.00% of heat-conducting material, 14.00%-55.00% of the low-viscosity liquid silicon oil, 0.04%-1.00% of catalyst and 0.00-5.00% of the color toner. The preparation method of the heat-conducting pouring sealant comprises the following steps: respectively preparing the A component and the B component, uniformly mixing the A component with the B component according to the weight ratio of 100: 80-100: 125 during the use, and heating and curing for 2 hours at the temperature of 60-80 DEG C for preparation.

The invention relates to the powdery coating field and discloses a preparation method of a polyester resin master batch for regulating and controlling solidification speed of a powdery coating, and application of the polyester resin master batch to powdery coating. The method provided by the invention employs alcohol and acid in a molar ratio of 1.02-1.2 / 1 to prepare the linear polyester resin master batch; and an added curing accelerator accounts for 0.2-8 wt%. The polyester resin master batch prepared according to the method has an acid value of 30-50 mg KOH / g and high glass-transition temperature; and the curing accelerator quaternary phosphonium salt and (or) quaternary ammonium salt in the weight proportion of 0.2-8% is added, so as to prepare the polyester resin master batch for regulating and controlling solidification speed of the powdery coating. The method provided by the invention can effectively shorten solidification time or reduce solidification temperature of the powdery coating, thereby reducing energy consumption and expanding scope of application of the powdery coating.

The invention relates to an adhesive, and particularly relates to an underfill adhesive with good compatibility and a preparation method thereof, which are applicable to the underfilling for packaging such as chip size packaging (CSP), ball grid array (BGA) packaging and the like, and belong to the field of adhesives. The underfill adhesive is composed of the following raw materials in parts by weight: 20-50 parts of epoxy resin, 5-20 parts of rosin epoxy resin, 2-15 parts of polyols, 5-10 parts of a silane coupling agent, 0.5-1 part of a cationic initiator, 35-55 parts of silicon powder, and 0.5 part of carbon black. The underfill adhesive disclosed by the invention is high in flow speed, and meets the requirements for high density packaging; the underfill adhesive has good compatibility with a soldering flux, and the formation of defects in the processes of flowing and curing is reduced; the shrinkage rate is low, and the reliability of packaging components is effectively guaranteed; the underfill adhesive is small in smell after being cured, thereby complying with the trend of environmental protection; and the underfill adhesive is good in storage stability, and convenient to use and store.

The invention discloses a chalking-resistant spray gel and a preparation method thereof. The chalking-resistant spray gel is prepared from the following raw materials in parts by weight: 10 to 16 parts of butadiene-stryrene copolymer elastomer, 10 to 18 parts of hydrogenated rosin, 3 to 16 parts of hydrogenerated pentaerythritol rosin resin, 1 to 5 parts of alkyl phenolic resin magnesium oxide chelating matter, 5 to 8 parts of styrene block graft polymer, a proper amount of dispersing solvent, and 1 to 2 parts of solvent, wherein the viscosity of the alkyl phenolic resin magnesium oxide chelating matter is greater than 3000cps when determining by a No.3 rotor at the temperature of 25 DEG C; the styrene block graft polymer is prepared from the following raw materials in parts by weight: 100 parts of styrene block copolymer, 2 to 6 parts of MAH (maleicanhydride) monomer, 10 to 20 parts of HEMA (hydroxyethyl methacrylate) monomer, 30 to 40 parts of MMA (methyl methacrylate) monomer, 0.3 to 0.4 part of initiator, and 350 to 400 parts of solvent; the styrene block graft polymer is prepared by firstly grafting the styrene block copolymer, the MAH monomer and the HEMA monomer and then grafting with the MMA monomer; the styrene block copolymer is selected from one or several of SBS (styreneic block copolymers) or SIS (styrene isoprene styrene). The chalking-resistant spray gel has good chalking-resistant property.

The invention relates to the technical field of flame retardant modification, and provides a high-heat-conduction halogen-free expansion flame-retardant epoxy resin pouring sealant and a preparation method thereof. The preparation method comprises the following steps: preparing a first epoxy component, namely mixing epoxy resin, a toughening agent, an epoxy active diluent, a dispersing anti-settling agent and a defoaming agent for forming a first mixture, mixing zinc oxide and boron nitride to obtain a high-heat-conduction filler component, adding the high-heat-conduction filler component intothe first mixture for forming a second mixture, preparing a halogen-free expansion flame-retardant filler component by using crystalline II type diammonium polyphosphate and dipentaerythritol, addingthe halogen-free expansion flame-retardant filler component into the second mixture, and carrying out mixing and defoaming to obtain a first epoxy component; preparing a second epoxy component, namely mixing methyl tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride, a curing accelerator and a defoaming agent, and then carrying out defoaming to obtain a second epoxy component; and mixing the first epoxy component and the second epoxy component, carrying out defoaming, and then carrying out curing twice. The preparation method has simple operation and low production cost, and theprepared epoxy resin pouring sealant has excellent thermal conductivity and flame retardance.

The invention belongs to the technical field of preparation of photocuring silk-screen printing ink, and particularly relates to printing ink as well as a preparation method and application thereof. The ink comprises aliphatic polyurethane acrylate, modified epoxy acrylate, coated silver paste and/or coated aluminum paste, a reactive diluent, a photoinitiator, a co-initiator and a polymerization inhibitor, wherein the aliphatic polyurethane acrylate is difunctional polyether polyol polyurethane acrylate, and the molecular weight of the aliphatic polyurethane acrylate is 3000 to 8000. The ink provided by the invention does not contain volatile solvents, is odorless, does not discharge VOC (volatile organic compounds), and is environment-friendly. According to the ink, an ink layer obtained through the synergistic effect of all the components has certain ductility, can automatically fall back during scraping and cannot form fragment powder to fall off, and the scraping difficulty cannot be increased along with the increase of storage time; and the ink is high in curing speed and can be deeply cured, and the problem that part of ink is not cured does not exist.

The invention discloses fast-curing radar wave absorbing putty, a preparation method and applications thereof, wherein the putty is prepared from two components, and specifically comprises, by weight,8.0-9.0% of an adhesive A, 7.0-8.0% of an adhesive B, 78.0-83.0% of a radar wave absorbent, 1.0-2.0% of an additive, and 2.0-3.0% of a curing agent. The preparation method comprises: adding the adhesive A, the adhesive B and the additive into a beaker according to the formula ratio, uniformly stirring, adding the radar wave absorbent and the curing agent, and continuously stirring to obtain the quick-curing radar wave absorbing putty. According to the invention, the quick-curing radar wave absorbing putty coating is obtained through a blade coating process, and has characteristics of good radar wave absorbing performance, high curing speed and good flexibility.

The invention provides a high-speed railway ballastless track convex blocking table filling material and a preparation method thereof. The material comprises the following raw materials: a component Amaleimide modified asphalt, a component B epoxy resin and a component C epoxy resin curing agent, the component C is prepared from the following raw materials in parts by weight: 100 parts of a polyether amine curing agent, 20-45 parts of a blocked polyurethane prepolymer, 10-20 parts of amino polydimethylsiloxane, 0-2.5 parts of a curing accelerator and 5-17.5 parts of an auxiliary agent; the mass ratio of the component B to the component C is 1: (0.65-1.35), and the mass ratio of the component A to the sum of the component B and the component C is (0.5-1.5): 1. After the filling material iscured, an epoxy resin-polyurethane interpenetrating polymer network or island structure is formed, the flexibility of the material is greatly improved, and the shearing strength, the adhesive force,the tensile strength, the bending strength and the like of an adhesive layer are improved.

The invention discloses a plugging agent for drilling fluid and a preparation method thereof. The plugging agent is prepared from the following components in parts by weight: 100 parts of matrix asphalt, 10-40 parts of a microcapsule modifier, 1-20 parts of a dispersing agent, 5-20 parts of a curing agent, 0.5-5 parts of an accelerant and 100-200 parts of water. The plugging agent can effectively reside at entrances of malignant leakage strata such as large cracks and karst caves to form solid sealing, and particularly, the retention plugging capacity and the water washing resistance are improved at high temperature and high pressure, so that the plugging success rate is increased.

The invention discloses a low-viscosity and high-thermal-conductivity two-component potting silica gel which is composed of a component A and a component B. The component A is composed of the following raw materials: 40-90 parts of a thermal conductive material, 20-50 parts of low-viscosity liquid silicone oil, 1-10 parts of a cross-linking agent, and 0.5-5 parts of a toner. The component B is prepared from the following raw materials in parts by weight: 40-90 parts of a heat-conducting material, 20-55 parts of low-viscosity liquid silicone oil, 0.04-1 part of a catalyst and 0.5-5 parts of a toner. The potting silica gel disclosed by the invention is good in flowability and high in thermal conductivity, the reliability and stability of an electronic device are improved, and the service life of the electronic device is prolonged.

The invention relates to the technical field of corrugated paper, in particular to composite corrugated paper and a preparation method thereof. The composite corrugated paper comprises first surface paper, an antibacterial layer, a reinforcing layer, corrugated core paper, a fiber layer, a waterproof layer and second surface paper which are sequentially attached, and the upper surface of the reinforcing layer and the lower surface of the fiber layer are each coated with a composite adhesive layer. A composite adhesive is prepared from the following raw materials in parts by weight: 10-20 partsof modified alkyd resin, 0.1-2.0 parts of azo initiator, 1-5 parts of phenolic compound, 10-15 parts of deionized water, 1-5 parts of polyvinyl alcohol, 10-20 parts of rice hull fiber, 20-30 parts ofepoxy resin, 1-3 parts of nano SiO2, 8-12 parts of chitosan, 1-5 parts of plasticizer, 0.1-3.0 parts of curing agent, 0.1-3.0 parts of antioxidant, 0.1-1.0 part of citric acid, 1-5 parts of a fillerand 15-25 part of starch. The composite corrugated paper provided by the invention has good strength and mildew-proof and antibacterial effects, and is long in service life.