健康·安全·环境
第46卷第7期 2016年7月
涂料工业
PAINT & COATINGS INDUSTRY
交联剂对废聚乙烯醇涂料改性研究
刘日鑫，熊煦，陈晓松，杨小林
（常州工程职业技术学院，化学与材料工程学院，江苏常州213164）
Vol.46No.7 Jul.2016
摘要：分析了四硼酸钠交联剂对废聚乙烯醇（PVA）薄膜制得的外墙涂料性能的影响，探索了交联机理。实验比较分析了涂料改性前后的耐水性、耐碱性、耐洗刷性和耐沾污性。利用FT-IR分析手段，对交联机理进行了探索。结果表明：改性后涂膜的耐水性、耐碱性和耐洗刷性均明显提高：当交联剂浓度为1.0%.外喷量为180mL/m时，改性涂料的耐水性、耐碱性和耐洗刷性分别为2280h、768h 和5100次，较对比试样分别提高了3166.7%、2133.3%和1020.0%。通过FT-IR分析可知，交联剂四硼酸钠中的硼离子与PVA中的一OH发生缩合反应生成网状交联产物。
关键词：交联改性；涂料：废聚乙烯醇：资源化：再利用
中图分类号：TQ635.51
文献标识码：A文章编号：0253-4312（2016)07-0046-05
Effects of Crosslinking Agent on Properties
of CoatingsBased onPVAWastes Liu Rixin,Xiong Xu, Chen Xiaosong,Yang Xiaolin(Department of Chemical and Material Engineering, Changzhou
Vocational Institute of Engineering, Changzhou, Jiangsu 213164,Chino)
Abstract: The effect of sodium tetraborate used as crosslinking agent on the properties of the water-based coating based on PVA wastes was analyzed. The water resistance, alkali re sistance, scrub resistance and antifouling of the coatings before and after modification were in-vestigated. The crosslinking mechanism was also discussed via FT-IR. The results show that the significant improvement of properties of coatings modified with the crosslinking agent was observed. When the content of the crosslinking agent was 1. 0% and the external spraying a-mount was 180 ml/m,the water resistance, alkali resistance, scrub resistance of the modified coatings were 2 280 hours, 768 hours and 5 100 times respectively, which were in-creased by 3 166. 7%, 2 133. 3% and 1 020. 0% respectively as compared to that of the con-trol samples. The FT-IR indicated that a condensation between sodium tetraborate and PVA occurred to form a crosslinking structure.
Key Words:crosslinking modification; coatings; PVA wastes; recycling; reuse
废聚乙烯醇薄膜为生产亚克力板材产生的工业废弃物，其主要成分为聚乙烯醇，目前尚未有有效方
法再利用。聚乙烯醇涂料耐水性差，是限制此类涂料广泛使用的主要原因。为了提高涂料性能，需要对成
作者简介：刘日鑫（1975一），男，博士，制教投，主要从事工业废弃物资源化的研究。 46