摘要
通过阴离子淤浆聚合方法,以氢氧化钠为催化剂、异氰酸酯作活化剂,以惰性脂肪烃为分散剂,在不同的反应时间和140～150℃温度下,制得了不同相对分子质量的尼龙6,最高相对粘度17．5。通过熔融纺丝,获得了可纺性良好的纤维,其断裂强度5．0～6．9 cN／dtex。X衍射测试分析表明,同阴离子本体聚合尼龙6(MC尼龙6)和高粘度尼龙6比较,阴离子淤浆聚合尼龙6在二次成型中更易于生成轫性较好的γ晶型,具有更高的冲击强度。
Nylon 6 with various relative molecular weight was prepared via anionic slurry polymerization with sodium hydroxide as a catalyst, aliphatic isocyanate as an activator and inert aliphatic hydrocarbon as a dispersant at 140 - 150℃ and different reaction time. The maximum relative viscosity of the obtained nylon 6 can be up to 17.5. The nylon 6 fiber can be produced with fairly good spinnability and breaking strength 5.0 - 6.9 cN/dtex via melt spinning process. The nylon 6 prepared via anionic slurry polymerization was compared with nylon 6 prepared via anionic bulk polymerization （ MC nylon 6） and high-viscosity nylon 6. The X-ray diffraction patterns showed that nylon 6 prepared via anionic slurry polymerization was prone to forming γ crystal with good tenacity during the secondary formation, hence it had higher impact strength.
出处
《合成纤维工业》
CAS
CSCD
北大核心
2007年第3期27-29,共3页
China Synthetic Fiber Industry
基金
北京市教委科技开发重点项目
北京市教委面上项目(Kz
KM200610012007)
北京市属市管高等学校人才强教计划资助项目
关键词
聚己内酰胺
阴离子淤浆聚合
力学性能
纺丝
polycaprolactam
anionic slurry polymerization
mechanical properties
spinning
