CAP 伊士曼482-0.5:CAP-482-0.5 Eastman Cellulose Acetate Propionate
Antiblock Additive
CAP-482-0.5 Eastman Chemical Company
产品说明:
Eastman Cellulose Acetate Propionate
Eastman cellulose esters are made from a green, sustainable and renewable resource that can be used as binders, additives, film formers or modifiers in paints, coatings, primers, lacquers and enamels for automotive, wood, plastic, paper, consumer electronics and leather applications, in graphic arts, inks and overprint varnishes. These high Tg materials provide improvements in key properties such as rheology control, dry time, appearance, metal flake orientation, sag, flow and leveling, block resistance and print resistance.
CAP-482-0.5 Cellulose Acetate Propionate is a low odor, free-flowing powder and is especially suitable for use in inks, overprint varnishes, and nail lacquer topcoats. It is compliant with FDA additive regulations for use in certain food contact applications.
CAP中文名称：醋酸丙酸纤维素
简称：CAP;;
英文名称：Cellulose acetate propionate
分子式：[C6H7O2 (OCOC2H5) x (OCOCH3) y (OH) 3-x-y] n
物化性质:
一般乙酰基7.5%～9.0%，丙酰基39%～47%。透明、半透明或不透明粒料，坚韧，耐候性好，易加工、尺寸稳定，但不耐化学品。熔融温度190℃。密度1.35～1.40g/cm3。拉伸强度14～54MPa，弯曲模量830～2410MPa，悬臂梁缺口冲击强度27J/m到不破，洛氏硬度R100～122。热变形温度60～71℃。具有较好的抗湿、耐寒、柔韧、透明、电绝缘等性能，并能与高沸点增塑剂有较好的混溶性。不耐无机酸、碱、醇、酮、烃、氯代烃，而耐脂和油。
制备方法:
将纤维素用丙酸处理后，再用丙酸、丙酸酐和醋酸、醋酸酐混合液在硫酸存在下，进行酯化，然后再经水解、沉析、洗涤、干燥等工序，即得到某一取代度的醋酸丙酸纤维素。
用途:
由于CAP制成的塑料，质坚韧，尺寸稳定性好，模塑性好，表面光泽好，非常适宜用于做汽车零件、工具柄、收音机及电视机部件、方向盘以及用于无线电晶体管及玩具等。