News Details
Properties of coating crosslinking agent
2017-5-12 13:22:25
Properties of coating crosslinking agent.It is often a substance containing many functional groups, such as organic diacid, polyol, etc. Or molecules containing multiple unsaturated double bonds, such as diethylbenzene and diisocyanate, N, n-methyl-diacrylamide (MBA), etc.
It can be made with monomer to be condensed (or polymerized) to a certain degree of cross-linking, making the product into an insoluble cross-linked polymer; Also can keep a certain number of functional groups in linear molecules (or double bond) and then add certain substances to crosslinking, such as the curing of phenolic resin and rubber vulcanization, etc. Powerful nitrogen-propyl cross-linking agent such as sac-100, un-7, multifunctional polycarbonized diamines crosslinking agent such as un-557, closed crosslinking agent un-125f, etc.
Crosslinking agent selection
In the case of different adhesives, the crosslinking agent should be chosen for its use, and the crosslinking agent has the following requirements:
(1) the active group of the crosslinking agent can form the crosslinking structure with the component reaction in the adhesive.
(2) the crosslinking efficiency is high, and the stable crosslinking structure can be obtained by adding a small amount.
(3) the crosslinking speed is appropriate, too fast and too slow.
(4) the combination of several crosslinking agents can achieve the best overall effect.
(5) the crosslinking agent is stable during processing and storage, without harmful reaction and condensation. No poison, no irritant, no pollution environment.
solubility
It is soluble in aromatic hydrocarbon, halogenated hydrocarbon, naphthene, acetone, polyol, etc., which are soluble in alkane and not soluble in water. Chemical properties: stable under normal temperature, can be stored at room temperature for a long time. The functional group of TAIC is three allyl propyl, which has the general commonality of fatty olefins, such as various addition reactions, homopolymerization and copolymerization, Prins reaction, etc. Under the peroxide caused, TAIC than other allyl polymerization, occurred more often in air heated to above 140 ℃ and the reaction, become transparent, qualitative hard homopolymer.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Common classification
Crosslinking agent is also known as curing agent, curing agent, curing agent, it can make linear or mild branched macromolecules into a 3 d mesh structure, improving strength, heat resistance, abrasion resistance, solvent resistance, such as performance, can be used for foam or not foam products.
Epoxy resins can be cross-linked by acid, amine, amino resin, isocyanate, phenolic resin, etc.
Amino resins can be cross-linked by cold &heat curing system based on isocyanate, carboxylic acid or anhydride, epoxy resin, phenolic resin, etc.
Phenolic resin can be crosslinked through acid, epoxy and isocyanate, which can be used in cold &heat curing system.
Can be based on alkyd resin acids, amines, amino resin, isocyanate, phenolic resin, peroxide, light initiator, etc., for cold & hot crosslinking curing system;
Acrylic resin can be based on amine, amino resin, epoxy resin, acrylic acid ester, phenolic resin, free radicals, such as for cold & hot crosslinking curing system;
Polyethylene can be cross-linked through peroxide, silanol, electron beam, etc.
The conventional elastomer can be cross-linked by cold &heat curing system based on sulfur, peroxide and isonitrile.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
It can be made with monomer to be condensed (or polymerized) to a certain degree of cross-linking, making the product into an insoluble cross-linked polymer; Also can keep a certain number of functional groups in linear molecules (or double bond) and then add certain substances to crosslinking, such as the curing of phenolic resin and rubber vulcanization, etc. Powerful nitrogen-propyl cross-linking agent such as sac-100, un-7, multifunctional polycarbonized diamines crosslinking agent such as un-557, closed crosslinking agent un-125f, etc.
Crosslinking agent selection
In the case of different adhesives, the crosslinking agent should be chosen for its use, and the crosslinking agent has the following requirements:
(1) the active group of the crosslinking agent can form the crosslinking structure with the component reaction in the adhesive.
(2) the crosslinking efficiency is high, and the stable crosslinking structure can be obtained by adding a small amount.
(3) the crosslinking speed is appropriate, too fast and too slow.
(4) the combination of several crosslinking agents can achieve the best overall effect.
(5) the crosslinking agent is stable during processing and storage, without harmful reaction and condensation. No poison, no irritant, no pollution environment.
solubility
It is soluble in aromatic hydrocarbon, halogenated hydrocarbon, naphthene, acetone, polyol, etc., which are soluble in alkane and not soluble in water. Chemical properties: stable under normal temperature, can be stored at room temperature for a long time. The functional group of TAIC is three allyl propyl, which has the general commonality of fatty olefins, such as various addition reactions, homopolymerization and copolymerization, Prins reaction, etc. Under the peroxide caused, TAIC than other allyl polymerization, occurred more often in air heated to above 140 ℃ and the reaction, become transparent, qualitative hard homopolymer.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Common classification
Crosslinking agent is also known as curing agent, curing agent, curing agent, it can make linear or mild branched macromolecules into a 3 d mesh structure, improving strength, heat resistance, abrasion resistance, solvent resistance, such as performance, can be used for foam or not foam products.
Epoxy resins can be cross-linked by acid, amine, amino resin, isocyanate, phenolic resin, etc.
Amino resins can be cross-linked by cold &heat curing system based on isocyanate, carboxylic acid or anhydride, epoxy resin, phenolic resin, etc.
Phenolic resin can be crosslinked through acid, epoxy and isocyanate, which can be used in cold &heat curing system.
Can be based on alkyd resin acids, amines, amino resin, isocyanate, phenolic resin, peroxide, light initiator, etc., for cold & hot crosslinking curing system;
Acrylic resin can be based on amine, amino resin, epoxy resin, acrylic acid ester, phenolic resin, free radicals, such as for cold & hot crosslinking curing system;
Polyethylene can be cross-linked through peroxide, silanol, electron beam, etc.
The conventional elastomer can be cross-linked by cold &heat curing system based on sulfur, peroxide and isonitrile.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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