73 results about "Methylhexahydrophthalic acid" patented technology

The invention discloses a liquid epoxy resin composition for packaging an LED (Light Emitting Diode). The liquid epoxy resin composition consists of an agent A and an agent B, wherein the agent A comprises 97-99 percent by weight of epoxy resin composition and 1-3 percent by weight of defoaming agent; the agent B comprises 94-97 percent by weight of alicyclic anhydride, 0.02-0.1 percent by weight of antioxidant, 0.02-0.1 percent by weight of ultraviolet absorber, 2-5 percent by weight of toughening modifier and 0.5-1.5 percent by weight of accelerator; and the weight ratio of the agent A to the agent B is 100:(100-105). The epoxy resin composition in the agent A is bisphenol-A epoxy resin and 3,4-epoxy cyclohexylmethyl and 3,4-epoxycyclohexyl carboxylate; and the alicyclic anhydride in the agent B is at least one of methyl tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride and hexahydrophthalic anhydride; and the toughening modifier is neopentyl glycol. The neopentyl glycol has a structure of a branched chain, so that the flexibility and the cracking resistance of the cured epoxy resin are remarkably improved.

The invention aims to provide a curable resin composition for encapsulating an optical semiconductor and a cured product thereof, which can prevent sinking after curing and have excellent property of etchant gas resistance and excellent dyeing resisting property. The curable resin composition contains epoxy resin, solidifying agent and/or solidifying booster expressed by formula (1) (in the formula, a plurality of R1 can be same or different and can independently present hydrogen atom or methyl). The curable resin composition of the invention, used as the optimized solidifying agent cyclohexane-1, 3, 4-triformic-3, 4-anhydride and methyl hexahydrophthalic anhydride, has particular effect in preventing sinking after curing.

The invention relates to an epoxy resin pouring sealant and a usage method. The epoxy resin pouring sealant is composed of an o-cresol-formaldehude epoxy resin matrix, a methylhexahydrophthalic anhydride curing agent, an electronic grade torispherical silica micro powder filler, a diluent and an antifoaming agent, wherein the composition ratio of the epoxy resin matrix to the curing agent is 1: (0.6-1.4), and the composition ratio of the epoxy resin matrix to the filler is 1: (0.3-2.4). According to the epoxy resin pouring sealant, a curing process is that pre-curing is performed at the temperature of 90 DEG C for 0.5-1 hour, and curing is performed at the temperature of 150 DEG C for 2-3 hours. The epoxy resin pouring sealant has the advantages of being low in toxicity, density, thermal expansivity coefficient and water absorption rate, high in bending strength and compressive strength and good in application prospect and can be widely applied to electronic controllers, sensors, aerospace components and the like.

The invention relates to a heat conduction insulating casting glue and a preparation method thereof. The casting compound comprises the following main components in parts by weight: (A) 100 parts of hydantoin epoxy resin, (B) 60-120 parts of anhydride curing agent, and (C) 200-400 parts of inorganic heat conductive filler, wherein the component A (per 100 weight parts) contains 10-15 weight partsof alcohol plasticizer; the component B is one or more of hexahydrophthalic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride and methylnadic anhydride; and the component C is one or more of silica micropowder, aluminum oxide, aluminum nitride and boron nitride in 300-900 meshes. The preparation method of the casting compound comprises the following steps: mixing A and B proportionally; soaking C in ethanol solution of silane coupling agent, dispersing at a high speed, filtering, and oven-drying; heating the mixture of A and B, adding C, mixing, and debubbling; and casing, and curing. The casting compound provided by the invention has low viscosity, greatly improved heat-conducting property and improved mechanical properties, and is convenient in casting. The preparation method of the casting compound is solvent-free, and has no pollution to the environment.

The invention discloses a reversible self-repairing epoxy resin and a preparation method and a recovery remodeling method thereof. Under the catalysis of potassium iodide, an ester solution of 2-thioglycolic acid is oxidized by 30% hydrogen peroxide to obtain 2,2'-dithiooxalic acid. The 2,2'-dithiooxalic acid is subjected to dehydration and cyclization through an anhydride to prepare 2,2'-dithiooxalic anhydride. The 2,2'-dithiooxalic anhydride is mixed with methylhexahydrophthalic anhydride in proportion, an epoxy resin is added, and curing is conducted, so that the reversible self-repairing epoxy resin is obtained. The composition of the dynamic cross-linked network and the permanent cross-linked network in the epoxy resin is changed, the reversible self-repairing and recovery remodelingof the epoxy resin are realized, the excellent heat resistance is obtained, and the mechanical property is improved. The preparation method of the reversible self-repairing epoxy resin provided by theinvention has the advantages of wide raw material source and simple process and the product has the characteristics of being good in applicability and high in practicability.

Disclosed is an epoxy resin composition which is solid at ordinary room temperature, cures with excellent light resistance and heat resistance and minimal shrinkage, and is useful for encapsulating LEDs. The epoxy resin composition is characterized by comprising as an essential component an epoxy resin having an epoxy equivalent of 300-1000 g/eq and a softening point of 65-110° C. obtained by reacting a nonaromatic polycarboxylic acid (A) having an acid value of 100-250 mgKOH/g with a nonaromatic epoxy resin (B) having an epoxy equivalent of 100-400 g/eq. The nonaromatic polycarboxylic acid (A) may be obtained by reacting 1,4-cyclohexanedimethanol, 2,2-bis(4-hydroxycyclohexyl)propane, or 3,9-bis(1,1-dimethyl-2-hydroxyethyl)-2,4,8,10-tetraoxaspiro[5,5]undecane with methylhexahydrophthalic acid or hexahydrophthalic acid.

The invention discloses an octadecylamine graft epoxy heat-conducting material which is prepared from the following raw materials in parts by weight: 1.5-2 parts of sodium myristate soap, 0.3-1 part of diisopropyl ethanolamine, 37-40 parts of hexagonal boron nitride, 8-10 parts of methyl hexahydrophthalic anhydride, 0.4-1 part of neodymium acetylacetonate, 0.7-1.3 parts of octadecylamine, 4-6 parts of 3,5-diamidobenzoic acid, 2-3 parts of triphenyl phosphite, 0.3-0.5 part of pyridine, 32-40 parts of N-methylpyrrolidone, 100-110 parts of epoxy resin E40, 1-2 parts of sodium lignosulfonate, 2-3 parts of zinc dibutyl dithiocarbamate, 4-5 parts of allyl polyethyleneglycol, 0.6-1 part of 1,2-dimethyl imidazole, 10-12 parts of wollastonite powder and 0.6-1 part of hydroxystearic acid. The composite material has the advantages of high surface hardness, favorable hydrophobicity and excellent comprehensive properties.

This invention provides a self-healable epoxy resin and its preparation, recycling and remolding method. With the catalyst of potassium iodide, an ester solution of 2-mercaptoacetic acid was oxidated by 30% H₂O₂ to form 2,2′-dithiodiacetic acid; then 2,2′-dithiodiacetic acid was dehydrated and cyclizated by anhydride to form 1,4,5-oxadithiepane-2,7-dione; 1,4,5-oxadithiepane-2,7-dione and methylhexahydrophthalic anhydride were mixed by mass ratio and cured with epoxides to get the self-healable epoxy resin. Through controlling dynamic and permanent three-dimensional crosslinked network, the self-healable epoxy resins provided in this invention exhibit high thermal resistance and improved mechanical properties as well as excellent self-healing ability, recyclability and remoldability. This invention provides a preparation method with the merits of low cost, simple production processes, broad application prospects and strong utility.

The invention discloses a carbon nano-tube thermal conductive composite material, consisting of the following raw materials in parts by weight: 0.7 to 1 part of sodium myrastate, 10 to 13 parts of nano aluminum oxide, 1 to 2 parts of 3,5-diaminobenzoic acid, 0.3 to 0.7 part of pyridine, 2 to 3 parts of triphenyl phosphite, 0.1 to 0.2 part of lithium chloride, 0.6 to 1 part of a silane coupling agent kh560, 0.7 to 1 part of neodymium acetylacetonate, 1.6 to 2 parts of methylhexahydrophthalic anhydride, 80 to 90 parts of epoxy resin 6101, 1 to 2 parts of polyethylene benzenesulfonic acid, 0.4 to 1 part of hexamethyl cyclotrisiloxane, 3 to 5 parts of abietinol, 0.3 to 1 part of hexamethylphosphoramide, 5 to 6 parts of carbon nano-tubes and 0.3 to 1 part of 2-thiol benzimidazole. According to the carbon nano-tube thermal conductive composite material disclosed by the invention, with the addition of the carbon nano-tubes and the like, the thermal conductivity property of finished composite materials can be effectively improved.

The invention discloses a modified AF coating material as well as a preparation method and application thereof. The modified AF coating material comprises an AF raw material and a modifier, wherein the mass ratio of the AF raw material to the modifier is 20:2.5-3.5, and the modifier comprises fatty acid lead salt, methylhexahydrophthalic anhydride, 4-Nonylphenol, a nanolayer additive and butyl-Phenol in the mass ratio of 1:1:1:1:2. According to the material, the original AF raw material is modified, the thickness of a nanolayer is increased, so that the antifouling property, the fingerprint resistance, the hydrophobicity and the adhesive force of the material are improved.

The invention relates to an electric-insulation epoxy resin castable for an outdoor mutual inductor. The epoxy resin castable comprises the following materials by weight percent: 21-26% of resin, 45-55% of filling, 15-25% of a curing agent and 2-6% of other auxiliary agents, wherein the resin is formed by mixing organic silicon modified epoxy resin, phenolic aldehyde epoxy resin, brominated epoxy resin and bisphenol F-type epoxy resin; the filling is silane-processed silica powder; the curing agent is modified methylhexahydrophthalic anhydride; the other auxiliary agents include a curing catalyst, a plasticizer, a reactive diluent, a silane coupling agent, a coloring agent and an antioxidant. The electric-insulation epoxy resin castable has excellent physical and chemical properties and has the performance of heat resistance, low temperature resistance, ultraviolet irradiation resistance, ageing resistance and the like. The electric-insulation epoxy resin castable is applicable to the electric insulation of the outdoor mutual inductor and other electrical equipment.

The invention discloses an insulation epoxy resin material for an automotive relay shell. The insulation epoxy resin material is characterized in by comprising the following raw materials including, by weight, 100-130 parts of epoxy resin E40, 10-12 parts of methylhexahydrophthalic anhydride, 1-2 parts of magnesium stearate, 3-4 parts of triethyl acetyl citrate, 0.8-1 part of diphenyl imidazoline, 2-3 parts of alkenyl succinic anhydride, 1-2 parts of nickel aminosulfonate, 2-3 parts of acrylic polyoxyethylene glycol, 2-4 parts of microcrystalline wax, 0.6-1 part of trimethylbenzyl ammonium chloride, 10-12 parts of methyl acrylate, 0.04-0.1 part of ammonium persulfate, 0.01-0.02 part of divinyl benzene, 10-14 parts of nanosilicon dioxide and 0.1-0.3 part of coco fatty acid diethanol amide. According to the insulation epoxy resin material, the methyl acrylate serves as a monomer, the ammonium persulfate serves as an initiator, the diphenyl imidazoline is added into a mixture, and therefore obtained polymeric alcohol liquid has a certain antiseptic property; and the divinyl benzene serves as a cross-linking agent, nanosilicon dioxide dispersion liquid is added in the crosslinking process for modification, and therefore obtained nano-modification filler has very good intensity and toughness, and further has good compatibility with the epoxy resin.

The invention discloses an epoxy resin composite material for an outdoor mutual inductor electrical insulating coating. The epoxy resin composite material is characterized by being prepared from the following raw materials in parts by weight: 55-60 parts of polybutadiene epoxy resin, 1-2 parts of flower seed powder, 2-3 parts of nylon 66 fiber, 3-5 parts of cocinic acid monoethanolamide, 10-12 parts of butanol, 9-11 parts of citric acid, 6-9 parts of methylhexahydrophthalic anhydride, 1.2-3.2 parts of nano-zinc oxide, 0.7-1.2 parts of dipotassium glycyrrhizinate, 0.9-1.4 parts of (3-aminopropyl)trimethoxysilane, 1.3-3.5 parts of methylisothiazolinone, 2.1-3.5 parts of N, N`-diphenylthiourea, 0.8-1.5 parts of isopropyl tri(dioctylpyrophosphate) titanate and 4-7 parts of an auxiliary. The preparation process is simple, the operation is simple and convenient, and the problem that the conventional epoxy resin is single in performance is solved effectively. The epoxy resin provided by the invention has the advantages of excellent physical and chemical property, high-temperature resistance, low-temperature resistance, ultraviolet irradiation resistance, ageing resistance, high hardness, and excellent insulation effect, and is suitable for electrical insulation of outdoor mutual inductors and other electrical equipment.

The invention discloses a hybridized grafted flame-retarding epoxy material. The hybridized grafted flame-retarding epoxy material is prepared from the following raw materials in parts by weight: 6 to 8 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 1 to 2 parts of vinyltrimethoxysilane, 0.1 to 0.2 part of 2,2'-azobisisobutyronitrile, 2 to 3 parts of triglycidyl isocyanurate, a proper amount of dimethylformamide, 0.8 to 2 parts of 3-aminopropyltriethoxysilane, 17 to 20 parts of a 10% to 13% hydrochloric acid solution, 5 to 8 parts of methylhexahydrophthalic anhydride, 100 to 120 parts of epoxy resin E40 and a proper amount of ethanol. The epoxy material disclosed by the invention has very good flame-retarding and fireproof performance, good utilization safety and excellent comprehensive performance.