News Details
Epoxy resin coatings with crosslinking agent
2017-3-13 17:21:39
Epoxy resin coatings with crosslinking agent,Epoxy resin features
(1) high mechanical properties. Epoxy resin has a strong cohesion, the compact structure of molecules, so its mechanical properties is higher than phenolic resin and general-purpose thermosetting resins such as unsaturated polyester.
(2) adhesion. Epoxy resin crosslinking system containing epoxy group of active greatly, hydroxyl and ether bond, amine, ester, keys, such as polar group, endowed with epoxy cross-linking of metals, ceramics, glass, concrete, wood and other polar substrate with excellent adhesion.
(3) crosslinking little shrinkage. General is 1% ~ 2%. Is one of the least crosslinking shrinkage rate of thermosetting resin varieties (phenolic resin is 8% ~ 8%; unsaturated polyester resin is 4% ~ 4%; silicone resin was 4% ~ 8%). Linear expansion coefficient is small, generally is 6 x 10-5 / ℃. So after crosslinking volume change is not big.
(4) good manufacturability. Epoxy resin crosslinking basically do not produce low molecular volatiles, so low pressure molding or contact pressure. Can manufacture without solvent with different crosslinking agent, high solid, powder coatings and water-borne coatings such as environmental protection coating.
(5) of good electricity insulativity, fine. Epoxy resin is a thermosetting resin intermediary performance one of the best breed.
(6) good stability, good chemical resistance. Do not contain impurities such as alkali, salt of epoxy resin is not easy to bad. As long as proper storage (seal, do not be affected with damp be affected with damp, do not meet high temperature), its storage period is 1 year. After the expiration if inspection qualified can still use. Epoxy crosslinking with excellent chemical stability.
The alkali resistance, acid, salt and so on the many kinds of medium corrosion performance is better than that of unsaturated polyester resin, thermosetting resins such as phenolic resin. So a large number of used as a corrosion resistant primer, epoxy resin and epoxy resin crosslinking appears three-dimensional network structure, and ability of oil impregnation, such as a large number of application in the oil tank, oil tankers, overall aircraft fuel tank wall lining, etc.
(7) of epoxy cross-linking heat resistance is generally 80 ~ 100 ℃. Epoxy resin heat-resistant variety of up to 200 ℃ or higher.
The purpose of epoxy resin:
Epoxy resin excellent physical and mechanical and electrical insulating properties, and all kinds of adhesive performance, and its use of materials of flexibility is what other thermosetting plastic does not have. Because it can make the coating, composite materials, casting materials, adhesives, moulding materials and injection molding materials, in the national economy has been widely used in various fields.
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
Coating purposes
The application of epoxy resin in coatings account for larger proportion, it can make use of different varieties and distinctive. Its universality:
1. Excellent chemical resistance, alkali resistance in particular. 2. The film adhesion strong, especially in metal.
3. Has good heat resistance and electrical insulation.
4. Paint film good colour retention.
But poor weatherability of bisphenol A type epoxy resin coating, paint film easily pulverization lost in the outdoor light owed plump, high unfavorable for outdoor coatings and decorative coatings. Therefore epoxy resin coatings are mainly used as anticorrosive paint, metal primer, insulating paint, but heterocyclic and alicyclic epoxy resin coatings can be used in outdoor.
Epoxy resin in addition to nonpolar plastic bad bonding such as polyolefin, for all kinds of metal materials such as aluminum, steel, iron, copper; Non-metallic materials such as glass, wood, concrete, etc.; And thermosetting plastics such as phenolic resin, amino, unsaturated polyester has excellent adhesive property, therefore is called contact adhesive. Epoxy adhesive is one of the important varieties of structural adhesive.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
(1) high mechanical properties. Epoxy resin has a strong cohesion, the compact structure of molecules, so its mechanical properties is higher than phenolic resin and general-purpose thermosetting resins such as unsaturated polyester.
(2) adhesion. Epoxy resin crosslinking system containing epoxy group of active greatly, hydroxyl and ether bond, amine, ester, keys, such as polar group, endowed with epoxy cross-linking of metals, ceramics, glass, concrete, wood and other polar substrate with excellent adhesion.
(3) crosslinking little shrinkage. General is 1% ~ 2%. Is one of the least crosslinking shrinkage rate of thermosetting resin varieties (phenolic resin is 8% ~ 8%; unsaturated polyester resin is 4% ~ 4%; silicone resin was 4% ~ 8%). Linear expansion coefficient is small, generally is 6 x 10-5 / ℃. So after crosslinking volume change is not big.
(4) good manufacturability. Epoxy resin crosslinking basically do not produce low molecular volatiles, so low pressure molding or contact pressure. Can manufacture without solvent with different crosslinking agent, high solid, powder coatings and water-borne coatings such as environmental protection coating.
(5) of good electricity insulativity, fine. Epoxy resin is a thermosetting resin intermediary performance one of the best breed.
(6) good stability, good chemical resistance. Do not contain impurities such as alkali, salt of epoxy resin is not easy to bad. As long as proper storage (seal, do not be affected with damp be affected with damp, do not meet high temperature), its storage period is 1 year. After the expiration if inspection qualified can still use. Epoxy crosslinking with excellent chemical stability.
The alkali resistance, acid, salt and so on the many kinds of medium corrosion performance is better than that of unsaturated polyester resin, thermosetting resins such as phenolic resin. So a large number of used as a corrosion resistant primer, epoxy resin and epoxy resin crosslinking appears three-dimensional network structure, and ability of oil impregnation, such as a large number of application in the oil tank, oil tankers, overall aircraft fuel tank wall lining, etc.
(7) of epoxy cross-linking heat resistance is generally 80 ~ 100 ℃. Epoxy resin heat-resistant variety of up to 200 ℃ or higher.
The purpose of epoxy resin:
Epoxy resin excellent physical and mechanical and electrical insulating properties, and all kinds of adhesive performance, and its use of materials of flexibility is what other thermosetting plastic does not have. Because it can make the coating, composite materials, casting materials, adhesives, moulding materials and injection molding materials, in the national economy has been widely used in various fields.
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
Coating purposes
The application of epoxy resin in coatings account for larger proportion, it can make use of different varieties and distinctive. Its universality:
1. Excellent chemical resistance, alkali resistance in particular. 2. The film adhesion strong, especially in metal.
3. Has good heat resistance and electrical insulation.
4. Paint film good colour retention.
But poor weatherability of bisphenol A type epoxy resin coating, paint film easily pulverization lost in the outdoor light owed plump, high unfavorable for outdoor coatings and decorative coatings. Therefore epoxy resin coatings are mainly used as anticorrosive paint, metal primer, insulating paint, but heterocyclic and alicyclic epoxy resin coatings can be used in outdoor.
Epoxy resin in addition to nonpolar plastic bad bonding such as polyolefin, for all kinds of metal materials such as aluminum, steel, iron, copper; Non-metallic materials such as glass, wood, concrete, etc.; And thermosetting plastics such as phenolic resin, amino, unsaturated polyester has excellent adhesive property, therefore is called contact adhesive. Epoxy adhesive is one of the important varieties of structural adhesive.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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