[1]孙志娟,张心亚,黄洪,等.“饥饿态”进料法合成高固体份丙烯酸树脂的研究[J].南京理工大学学报(自然科学版),2007,(01):129-133.
 SUN Zhi-juan,ZHANG Xin-ya,HUANG Hong,et al.Synthesis of High-solids Acrylic Resin with "Starved State" Technique[J].Journal of Nanjing University of Science and Technology,2007,(01):129-133.
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“饥饿态”进料法合成高固体份丙烯酸树脂的研究
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2007年01期
页码:
129-133
栏目:
出版日期:
2007-02-28

文章信息/Info

Title:
Synthesis of High-solids Acrylic Resin with "Starved State" Technique
作者:
孙志娟;张心亚;黄洪;陈焕钦;
华南理工大学 化工研究所, 广东 广州 510640
Author(s):
SUN Zhi-juanZHANG Xin-yaHUANG HongCHEN Huan-qin
Institute of Chemical Engineering,South China University of Technology,Guangzhou 510641,China
关键词:
丙烯酸树脂 高固体份 /饥饿态0聚合工艺 性能
Keywords:
acrylic resin high-solids / starved state0 polymerization technique property
分类号:
TQ320.7
摘要:
采用“饥饿态”聚合工艺制备高固体份丙烯酸树脂,探讨了单体种类、溶剂配比、引发剂的选择和质量分数等对树脂性能的影响规律。结果表明:采用“饥饿态”聚合工艺可提高单体转化率,缩短反应时间,且所得到聚合物相对分子质量分布均匀;选用偶氮二异丁腈(AIBN)和过氧化苯甲酰(BPO)两种引发剂进行复配,比选用单一引发剂的引发效果好;选用醋酸丁酯、正丁醇和丙二醇甲醚丙酸酯作混合溶剂,当配比为2∶1∶1时聚合体系稳定,聚合物的固体质量分数可达70%,且粘度适中。此外,试验配制的树脂综合性能优异,其涂膜附着力达到0级;耐水性和耐碱性好,在pH=12~13的碱液中浸泡96 h无异样;户外耐候性好,在光照70 h后快速紫外老化测试色差值可小于5%。
Abstract:
The acrylic resin with high solids is synthesized by the polymerization technique of / starved state0 feed. The factors that influence the properties of the resin are discussed, includimg monomers system, them ixture ratio of solvents, initiators and reactive temperature. The experimen- tal results show that using the feed technique of/ starved state0 can raise the conversion ratio ofmon- omers, shorten the reactive time and get polymersw ith much more even distribution of molecular weigh;t the technique of adding azobisisobutyronitrile (AIBN) as an initiator first and then benzo- peroxide( BPO) as another initiator at later stage of experiment can get higher initiating efficiency than using one initiator only. Furthermore, butyl acetate, dimethyl benzene and butanol are used as m ixture solvents because of low poison. W hen the m ixture ratio is 2B1B1, the system can keep good stability, the solid content ismore than 70% and the viscosity of polymers is appropriate. The pre- pared acrylic resin has outstanding properties, such as excellent adhesion, waterproo,f alkali and outdoorweather resistance. The acrylic resin can keep original shape after it is soaked for 96 hours in alkali solventw ith pH between 12 and 13, and the chrom atism value of quick ultraviolet less than 5% after seventy-hour ultraviolet irradiation.

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备注/Memo

备注/Memo:
基金项目: 广州市科技局科技攻关重点项目 ( 2002Z2- D0071)
作者简介: 孙志娟 ( 1980- ), 女, 安徽桐城人, 博士生, 主要研究方向: 精细化工领域的乳液和树脂的合成, E-mail:sunzj77@ 163. com。
更新日期/Last Update: 2007-02-28