81results about How to "Excellent low temperature curing" patented technology

The invention discloses a nitrile resin monomer, a nitrile resin polymer and a preparation method of the nitrile resin monomer and the nitrile resin polymer, belonging to the technical field of organic polymer materials. The nitrile resin monomer is a tetraphthalonitrile resin monomer containing benzoxazine cycle, and the nitrile resin polymer is a product obtained by heating polymerization of the nitrile resin monomer. The nitrile resin monomer has a low viscosity, a good mobility and the processing performances of low-temperature curing and the like at a low temperature. The nitrile resin polymer has the good curing performances of self-flame resistance, adhesion, heat stability and the like. The resin monomer has the good processing performances of benzoxazine resins, and the resin polymer has the high-temperature resistance of nitrile resins, thus reducing the curing processing temperature and being capable of being used in a high-temperature temperature, namely, having the advantages of low temperature processing, medium temperature formation and high temperature use; and the resin monomer and the resin polymer can be used in the fields of coatings, adhesives, electronic packaging materials, aeronautics, astronautics, ships, resin matrix composites and the like. The preparation method is simple and easy to control, low in reaction temperature, energy-saving, and suitable for industrialized production.

The invention relates to a preparation method of a cardanol-based high temperature-resistant epoxy resin curing agent. The preparation method comprises the steps of firstly weighing cardanol, a phenolic compound, paraformaldehyde and diamine or polyamine according to weight, adding the cardanol, the phenolic compound and the paraformaldehyde into a reaction container, adding a catalyst, heating at the temperature of 75-100 DEG C for 2-6h to obtain an intermediate, then cooling the intermediate to 60-68 DEG C, adding the diamine or the polyamine, adding the remaining paraformaldehyde at the temperature in a stirring state, then heating till the temperature achieves 65-95 DEG C, reacting for 4-8h, and dehydrating in a vacuum state to obtain the cardanol-based high temperature-resistant epoxy resin curing agent provided by the invention. The synthesized curing agent has the advantages of great surface hardness and Shore hardness, excellent gloss, good high temperature resistance and low-temperature fast curing. According to the preparation method disclosed by the invention, the epoxy resin curing agent with a wide range of curing temperature, high temperature resistance and excellent surface performance is obtained and is suitable for requirements of primer paint and finish paint.

The invention relates to humid rusted solvent-free graphene modified epoxy paint and a preparation method thereof. The paint is prepared from a material A and a material B, wherein the material A is colored paint; the material B is a curing agent; graphene-oxide nano-rods are added into the colored paint; in the aspect of selecting epoxy resin, two types of epoxy resin including solvent-free epoxy resin E-51 and organic zinc-enriched epoxy resin, which have complementary properties, are selected, so that the adhesion force and antirust effect of the paint and a substrate are enhanced; in the aspect of selecting the curing agent, two curing agents are adopted; a polyamide curing agent is added on the basis of a cashew nut shell oil modified phenolic aldehyde amine curing agent which is researched latest, so that the humid rusted solvent-free graphene modified epoxy paint is prepared.

The invention discloses coated sand for sand prevention in an oil well and a preparation method of coated sand. The coated sand comprises A-type coated sand and B-type coated sand and is characterized in that the A-type coated sand is obtained by wrapping quartz sand with organosilicon-modified epoxy resin, a ketimine curing agent and external isolating agent hydroxy methyl cellulose in sequence; B-type coated sand is obtained by wrapping the surface of the quartz sand with cycloaliphatic epoxide resin, an amine curing agent and external isolating agent hydroxy methyl cellulose in sequence. The coated sand disclosed by the invention comprises the A-type coated sand and B-type coated sand, and a co-synergistic effect is generated after the A-type coated sand and the B-type coated sand are mixed, so that the requirements for low-temperature curing and high-temperature mining are met simultaneously. The coated sand disclosed by the invention meets the actual application requirements, gives consideration to low-temperature curing (a minimum temperature of 40 DEG C) to form higher strength, simultaneously is good in permeability, can stably work in a high temperature-resistant environment (about 280 DEG C), is wide in research and development scope of application, can be suitable for not only heavy oil wells, but also middle and low-temperature oil wells and water wells and is lower in comprehensive cost.

The invention relates to an adhesive composition, a film-like adhesive, an adhesive sheet and a connection structure, wherein the adhesive composition contains: (a) a thermoplastic resin, (b) a radical polymerized compound, (c) a radical polymerization initiator, and (d) a boron-containing complex. Wherein, the (d) complex is a compound represented by the following general formula (A), and in the formula (A), R1, R2 and R3 each independently represents an aryl group with or without a substituent, and X represents amine compound with nitrogen-atoms or a phosphorus compound with phosphorus atoms.

Provided is a water-based coating composition which exhibits excellent low-temperature curability and which can form a coating film with excellent adhesion to a substrate. A water-based coating composition which comprises (A) an aqueous epoxy-derived polyamine resin that has one or more primary and/or secondary amino groups in the molecule, (B) a compound that has one or more (meth)acryloyl groups in the molecule, and (C) an alkoxysilane compound, wherein the equivalent ratio of (meth)acryloyl of the compound (B) to amino of the resin (A) [(meth)acryloyl/amino] is 0.7 to 2.5, and the content of the alkoxysilane compound (C) is 0.2 to 5% by mass relative to the solid matter of the water-based coating composition.

The invention provides polyester resin capable of rapidly cured at low temperature and a preparation method thereof. The polyester resin is prepared from the following raw materials in parts by weight: 6.5-9.5 parts of polyalcohol, 13.5-14.5 parts of acid, 0.015-0.025 part of an esterification catalyst and 0.2-0.3 part of a curing accelerant. Compared with the prior art, according to the polyesterresin capable of rapidly cured at low temperature, high-activity monomers are combined, so that the finally prepared polyester resin is high in activity; softening point of the polyester resin is slightly reduced; a powder paint prepared by the polyester resin can be fully cured in short time under the low-temperature condition; the energy consumption is greatly reduced; in addition, good low-temperature leveling property and storage stability of the powder paint can also be ensured; meanwhile, the powder paint has excellent curing property and film formation property.

An aqueous coating composition having excellent low-temperature curability. The aqueous coating composition contains a water-soluble or water-dispersed polyamine resin (A) having one or more first amine groups and/or second amine groups in each molecule, and a compound (B) having one or more (meth)acryloyl groups in each molecule. The polyamide resin (A) has an amine equivalent weight of 100-3000, and the compound (B) has a viscosity at 25 DEG C of not more than 3000 mPas.

Disclosed is a block polyisocyanate obtained by blocking at least a part of isocyanate groups of a polyisocyanate, which is derived from an aliphatic diisocyanate and a polyol and satisfies all of the conditions (1)-(5) shown below, with a pyrazole compound. (1) Average number of isocyanate groups: 3.0-20 (2) Diisocyanate monomer trimer concentration: 10-50% by mass (3) Isocyanate group concentration: 5-22% by mass (4) Polyol content concentration: 5-40% by mass (5) Diisocyanate monomer concentration: 3% by mass or less.

The invention particularly relates to the field of coatings, and particularly relates to environment-friendly epoxy floor paint and a preparation method thereof. The invention provides the environment-friendly epoxy floor paint. The environment-friendly epoxy floor paint is prepared from preparation raw materials which at least comprise a first component and a second component, wherein the weightratio of the first component to the second component is 20 to (1 to 5).

The present invention relates to a negative-type photosensitive resin composition cured at a low temperature, and having excellent adhesion with a substrate and chemical resistance, a photocuring pattern formed by using the same and an image display device comprising the pattern.

It is an object of the present invention to provide an unsaturated group-containing ester compound which can be used as a raw material of a curable composition using transesterification reaction and which is inexpensive and has a good curability, and a polymer, a thermosetting resin composition, and a curable composition which containing the unsaturated group-containing ester compound, respectively.

An unsaturated group-containing ester compound having a chemical structure represented by the following general formula (1):

n₁: 1 to 10

(in the formula, R₁, R₂, and R₃ are the same or different and each is a hydrogen, an alkyl group, a carboxyl group, an alkyl ester group or a structure represented by R₄-[COOR₅]n₁;

R₄ is an aliphatic, an alicyclic or an aromatic alkylene group with a number of atoms of 50 or less in the main chain, which may have one or more functional groups selected from the group consisting of an ester group, an ether group, an amide group, and a urethane and may have a side chain;

R₅ is an alkyl group having 50 or less carbon atoms; and in the compound represented by the general formula (1), the R₄-[COOR₅] group may be a lactone structure represented by the following general formula (1-1).)

(R_x is a hydrocarbon group having 2 to 10 carbon atoms which may have a branched chain.)

The invention discloses a preparation method of an intercalation material with the dual effects of controllable corrosion inhibition and low-temperature catalysis. The intercalation material is applied to a paint, so a high-performance water-based anticorrosive paint used in a polar region and other low-temperature environments is researched and developed. A paint system comprises a component A and a component B, wherein the component A is a mixture using low-temperature-resistant epoxy resin as a matrix and formed by compounding the matrix with high-performance anticorrosive pigment and filler, and the component B is a modified amine curing agent. A coating formed by the paint has good long-term low temperature resistance and corrosion resistance, and is suitable for protection and decoration of ships and equipment used in polar regions.

The present invention provides a cationic resin composition comprising a cationic resin (A) and a blocked polyisocyanate (B) obtained by reacting an active hydrogen-containing component comprising a diol (a) which has two hydroxyl groups having different reactivities from each other and which has a molecular weight of 76 to 150 and a carboxyl group-containing diol (b) having a molecular weight of 106 to 500 with a polyisocyanate compound (c).

The invention discloses a carbon fiber cloth adhesive for underwater or humid environment reinforcement engineering and a preparation method thereof. The adhesive is obtained by well mixing a component A and a component B. The component A is prepared from fluorinated epoxy resin, hydroxymethyl bisphenol A type epoxy resin, bisphenol S type epoxy resin, diglycidyl aniline, trimethylolpropane triglycidyl ether, a toughening agent, water-absorbent resin, a defoaming agent, a dispersing agent, active silica powder, carbon nanotubes, cement and fumed silica. The component B is prepared from aliphatic amide polyamine, isophorone diamine, a curing agent, DMP-30, a coupling agent, a defoaming agent, a dispersing agent, active silica powder, carbon nanotubes, cement and fumed silica. The adhesive prepared by the invention has the advantages of high water interface bonding strength, high colloid mechanical strength, good toughness, strong impact resistance and fatigue resistance, good construction performance and the like, and the bonding effect and durability of the carbon fiber cloth adhesive in water environment reinforcement engineering can be remarkably improved.