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Crosslinking agent for phosphoric - containing coatings
2017-7-7 23:43:36
Crosslinking agent for phosphoric - containing coatings
2 kinds of crosslinking agent PM1 and PM2 were synthesized from 4, 4 '-diaminobenzyl methane, benzaldehyde and diethyl phosphite.
Phosphorus amine crosslinking agent PM1 and PM2 used for crosslinking DGEBA, according to a study by phosphorus amine crosslinking agent PM2 reactivity is lower than PM1, DDM/DGEBA, PM1 / DGE - BA and PM2 / DGEBA system Tg at 178 ℃, 112 ℃ and 112 ℃ respectively, DDM/DGEBA system under 700 ℃ carbon residue rate of only 19% of DGEBA/PM1 and PM2 / DGEBA system from 24% of DGEBA/DDM system for the LOI value increased to 30% and 35% respectively, flame retardant performance is greatly improved.
A new aromatic amine crosslinking agent (BADK) was synthesized by nucleophilic substitution reaction, such as zhang chunling, and structural characterization of the product was carried out.
BADK used in cross-linking E - 51 epoxy resin and epoxy resin containing biphenyl structure (TMBP) studies have shown that BADK effectively improves the thermal performance of the two crosslinking system, E - 51 epoxy crosslinking the glass transition temperature of content can be increased to 175 ℃, and the epoxy resin containing biphenyl structure of crosslinked glass transition temperature can be raised to 195 ℃. Through the determination of saturated water absorption rate, the moisture absorption of the crosslinking structure was significantly lower than that of the universal epoxy resin.
Lipid cycline is a group of amine compounds containing lipid ring structure (cyclohexyl, hybrid oxygen, nitrogen hexapyclic) in the molecular structure. Most of them are low viscosity liquid, which is longer than fatty amine, and the color of crosslinking is better than that of fatty amine and polyamide.
GuXiaojun such as chloride with six rings with phenol and to prepare three para aminophenol end amino epoxy resin, crosslinking agent, was synthesized at room temperature for liquid, rheological properties of the test showed that the crosslinking agent to join the system viscosity is greatly reduced. Compared with DDM, this system has lower crosslinking temperature and higher reactivity. The high content P and N elements in the crosslinking medium also give the system excellent flame retardant performance.
Chinese name: Diethyl toluene diamine(DETDA)Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
As crosslinking agent contains two elements N, P, crosslinking content also shows excellent flame retardant performance, with (A) and (B) as crosslinking agent, phosphorus content is 2.97%, the system achieved UL - 94 - v - 0 level; When PN of phenolic resin was used as a co-crosslinking agent, the content of phosphorus was up to 1.2%, which could reach the ul-94v-0 level.
ParveenKhurana acetamide as solvent, such as by double (4 - chlorobenzene formyl) dimethyl silane respectively with 4, 4 '- diamino diphenyl ether (E), 4, 4' - diamino diphenyl methane (M), 4, 4 '- diamino diphenyl sulfone (PS), 3, 3' - diamino diphenyl sulfone (MS) and double (3 - amino phenyl) methyl oxidation of p (B) and three (3 - amino phenyl) oxidation of p (T) synthesized by the reaction a variety of organic amide compounds containing silicon.
Through DSC test, the sample of exothermic temperature at 200 ~ 300 ℃, the lowest exothermic peak appeared in the amino compounds containing phosphorus, the highest exothermic peak appeared in and ester base amino compounds.
Tested by TG and amino compounds containing silicon carbon residue rate has increased significantly, and the peak appeared in both phosphorus and silicon compounds, carbon residue rate reaches 44.5% under 600 ℃. It has good thermal stability for the epoxy resin after crosslinking with both phosphorous and silicon atoms.
Ethacure100 is a kind of special structure of a mixture of aromatic amine and its molecular structure is aromatic ring 1, 4, there are two amine and two methyl, molecular chain is shorter, steric hindrance is bigger, room temperature for liquid, so low reactivity, good storage stability in a week.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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