News Details
Azide coating crosslinking agent
2017-7-9 15:28:59
Azide coating crosslinking agent
Lu Xianming and other synthesis of azide crosslinking agent (HAP). The results show that the mechanical properties of polyurethane elastomers after azide crosslinking agent are greatly improved after the introduction of strong polar nitrogen heterocyclic structure in azide crosslinking agent.
Crosslinking agent containing imide structure The compound containing the imide structure has high heat resistance and the introduction of this compound as a crosslinking agent into the epoxy resin system can effectively improve the resistance of the epoxy resin crosslinked Heat.
WuWanlung and other phthalic acid generated by the nitration reaction of 4-nitrophthalimide (NPH), and then through the hydration of NPH to produce a simple imide compounds (APH ).
They studied the APH for the phosphorus-containing phenolic resin crosslinking reaction. APH resin system has high thermal stability and Tg, and its thermal decomposition temperature in nitrogen and air is 328 ℃, 315 ℃, Tg is 141 ℃, and the dielectric constant of APH system is lower than that of DDM and DDS2 Joint system.
(N) and 4,4'-oxydiphthalic anhydride (O) are reacted with 4,4'-diaminodiphenyl ether (E), 4, 4, (M) and 4,4'-diaminodiphenylsulfone (S) were prepared by the reaction of 4'-diaminodiphenylmethane (M) with 6'-diaminodiphenylmethane (M), OS / NS, OM / NM and OE / NE, (Structural Formula 19), the product was used for cross-linking studies of DGEBA. Experiments show that the ENS system at 800 ℃ has the highest residual carbon content of 35.2%; the highest LOI value is 31.6%; the highest Tg is 194.3 ℃.
GuoFei et al. Synthesized a novel crosslinking agent MIBP by the polymerization of 4,4'-dimethoxymethylbiphenyl and N- (4-hydroxybenzene) -maleimide.
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
The GPC test showed a molecular weight distribution index of 1.41. Compared with the traditional crosslinking agent, the CNE system after crosslinking with MIBP has a higher Tg of 155 ℃, the system under nitrogen and air 10% heat loss temperature of 400 ℃ and 408 ℃, showing a good heat Stability, the carbon residue rate at 800 ° C is 44.5%, and these excellent thermal properties are due to the introduction of maleimide and biphenyl groups in MIBP.
LiuXiaoqing et al. Synthesized two kinds of rosin diacid derivatives (RMID and D-RMID) containing imide structure. When these two compounds were used in the cross-linking study of DER6224 epoxy resin, the RMID and D-RMID systems were found to be in Tg, tensile properties, elastic modulus and heat compared to the NCPT crosslinking system (structural formula 21) Stability and other aspects have significantly improved, showing a good application value.
Poly (HPM-CO-DCPD), which is synthesized by free radical polymerization of N- (4-hydroxybenzene) -maleimide and dicyclopentadiene (DCPD), (structural formula see formula 22) Polymers can be used for CNE crosslinking. Compared to the PN / CNE system, the HPM-CO-DCPD / CNE system showed a higher carbon residue rate (29.5% carbon at 800 ° C), better thermal stability (10% Temperature of about 360 ℃) and lower water absorption.
Amine cross-linking agent as the epoxy resin cross-linking agent in the most important category, its performance to a large extent determine the use of epoxy resin performance. Based on the review of the current amine cross-linking agent and its development trend, we believe that the development of new amine cross-linking agent with less dosage, convenient use and versatility has important theoretical and practical value.
Analysis of the electrical properties of epoxy resin and aromatic amine cross-linking cross-linking reaction, the first amine molecules in the primary amine above the active hydrogen and epoxy resin reaction, itself generated secondary amine, and then further reaction to produce tertiary amine, and finally formed Cross - linked network structure.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian