24小时热门版块排行榜

返回列表

cyxushikai

新虫 (初入文坛)

应助: 0 (幼儿园)
金币: 5
红花: 1
帖子: 5
在线: 46分钟
虫号: 3103229
注册: 2014-03-31

[交流] 树枝状聚合物，晨源

树枝状聚合物材料可以大幅改善聚酯粉末涂料表观性能
聚酯粉末涂料在固化过程中,易使涂膜表面产生微小缩孔和针孔等表面缺陷, 因此, 增加粉末涂料的流平性, 减少针孔的出现,极具市场前景和应用价值。在树枝状聚合物的端基用结晶性极性化合物进行改性,提高树枝状聚合物的玻璃化转变温度,利用其空腔和支化结构,能够改善这一问题。加入树枝状聚合物的粉末涂料配方其涂膜复合黏度均下降到标准样的20%一50%之间, 树枝状聚合物的接触角从100°降到80°即涂膜的表面张力增大，因此涂膜中的表面张力和分子间引力的差值变大.从宏观上表现为涂膜的流平时间更充分,流平性变好, 同时不影响粉末涂料的附着力、铅笔硬度、耐冲击性、柔韧性、光泽等其方面的性能。最新的第四代高分子材料-高性价比树枝状聚合物—晨源分子新材料

3. Dendrimer greatly improves powder polyester coating performance.
There’s shrinkage cavity during curing of powder polyester coating, improving leveling of powder has good application value. Dendrimer modified by crystal polar polymer has high Tg, the void space and hyperbranched structure can overcome above problems. Complex viscosity of powder coating with dendrimer was decreased to 20%-50% of standard sample, contact angle was lowered from 100°to 80°, surface tension was increased, thus leveling time was more and performance was better, meanwhile no negative effect on adhesion, pencil hardness, impact strength, flexibility, luster etc. Weihai CY Dendrimer Technology-Professional Manufacturer for low cost dendritic polymers. -The newest 4th class polymers.

回复此楼