摘要
研制了一种用于中药丸剂塑料球壳外层密封的专用蜡。将54号全炼石蜡和80号软质微晶蜡的混合物作为基础蜡料,考察各种添加剂对基础蜡料的熔点、运动黏度及其他性能的影响,确定该专用蜡的最佳制备配方为:54号全炼石蜡与80号软质微晶蜡的质量比为9∶1,低相对分子质量聚乙烯、C 5加氢石油树脂、乙烯-醋酸乙烯酯共聚物(EVA)、黏度调节助剂A、煤基费-托合成软质蜡、非晶态α-烯烃共聚物(APAO)的加入量(w,以基础蜡料的质量计)分别为1.0%,1.0%,0.5%,3.0%,20%,1.5%。在温度为120℃、时间为30 min、搅拌转速为200 r min的条件下制备的密封专用蜡在40℃及-10~-20℃下不变形、不龟裂,性能优于参比样品。
A special wax for sealing the plastic ball shell of the traditional Chinese medicine pill was prepared with excellent performances in deformation-resistance at high temperature and in anti-cracking at low temperature.Taking the mixture of fully refined wax No.54 and slack microcrystalline wax No.80 as base wax,the effects of diferent additives were investigated on the perfomances of the base wax melting point,viscosity and other properties.An optimum formula for preparing the sealing wax was determined that the dosage of low molecular weight polyethylene,C 5 petroleum resin,ethylene-vinyl acetate copolymer,auxiliary viscosity modifier A,coal based Fischer-Tropsch synthetic soft wax and amorphous poly alpha olefin was 1%,1%,0.5%,3.0%,20%and 1.5%,respectively.The special wax prepared under the conditions of 120℃,30 min and stirring speed of 200 r min has the advantages of nondeformation and non-cracking at 40℃and-10--20℃,is better than the reference sample.
作者
吴国江
夏树斌
刘青竹
Wu Guojiang;Xia Shubin;Liu Qingzhu(PetroChina Fushun Petrochemical Company Research Institute,Fushun,Liaoning 113004;Anshan Customs District P.R.China)
出处
《石油炼制与化工》
CAS
北大核心
2025年第1期167-171,共5页
Petroleum Processing and Petrochemicals
关键词
中药丸
塑料球壳
密封蜡
运动黏度
traditional Chinese medicine pill
platic ball shell
sealing wax
kinematic viscosity
