摘要
利用废弃含铬革屑在碱热条件下获得的胶原水解物对建筑石膏进行缓凝作用,实现废弃物资源化利用。研究了水解物对石膏的凝结时间、水化温度、绝干抗折强度及晶体形貌的影响。结果表明:随着水解物用量的增加,石膏的缓凝时间延长,而石膏的抗折强度逐渐降低,利用扫描电镜观察到石膏晶体的生长习性和形貌也发生了不同程度的改变,并从晶体变化的角度表达了水解物缓凝特征。
The retarding effect of building gypsum was carried out by collagen hydrolysate extracted from chrome scraps under alkaline-heating conditions.The recycling of waste was achieved.The influence of collagen hydrolysate on the gypsum setting time,hydrate temperature,absolute.dry breaking strength and crystal morphology was studied. The results show that with the increasing of collagen hydrolysate dosage,the delayed coagulation time of gypsum is prolonged,and the flexural strength of gypsum is gradually reduced.The growth habit and morphology of gypsum crystal are also changed through scanning electron microscopy.The delayed coagulation feature of collagen hydrolysate is expressed from the perspective of crystal change.
作者
丁晓良
单志华
龙忠珍
陈治军
DING Xiaoliang;SHAN Zhihua;LONG Zhongzhen;CHEN Zhijun(The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University,Chengdu 610065,China;Xuzhou Hongfeng Polymer Materials Limited Company,Xuzhou 221217,China)
出处
《中国皮革》
CAS
2019年第1期26-30,共5页
China Leather
基金
苏北科技专项Z XZ2017014
关键词
含铬革屑
缓凝剂
石膏
晶体形貌
缓凝机理
chrome scraps
retardant
gypsum
crystal morphology
delayed coagulation mechanism
