低游离甲醛可发性液态酚醛树脂的制备.pdf

研究与开发
合成树脂及塑料,2015,32(1):32
CHINA SYNTHETIC RESIN AND PLASTICS
低游离甲醛可发性液态酚醛树脂的制备
徐菁,丁继文,丁伟,俞鸣明',朱晋生,贾良山2,孙莺,胡和丰
(1.上海大学材料科学与工程学院,上海市200442.上海航天局810所军事代表室,上海市201108)
摘要:以苯酚和多聚甲醛为原料合成可发性液态酚醛树脂,考察了催化剂、甲醛与苯酚摩尔比、反应温度、
反应时间和甲醛捕捉剂对酚醛树脂中游离甲醛含量及酚醛树脂黏度的影响。结果表明:以复合催化剂作为催化剂、
用量为苯酚质量的5%,采用逐步升温工艺,在60-70℃条件下反应3.0h,80℃条件下反应2.5h,添加盐酸羟胺与尿
素组成的复合甲醛捕捉剂于80℃继续反应0.5h,得到的可发性液态酚醛树脂的游离甲醛质量分数为0.12%,黏度为
3.97
关键词:酚醛树脂可发泡游离甲醛复合甲醛捕捉剂
中图分类号:TY32.41
文献标识码:B
文章编号:1002-1396(2015)01-0032-04
Synthesis of foaming liquid phenolic resin with low free formaldehyde content
Xu Jing, Ding Jiwen, Ding Wei, Yu Mingming, Zhi
u Jinsheng
Jia Liangshan, Sun Ying, Hu Hefeng
(1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;
2. Military Representative of 810 Institute of Shanghai Academy of Aerospace, Shanghai 201108, China
Abstract: A foaming liquid phenolic resin was synthesized from phenol and paraformaldehyde. The
effects of the calalyst, the molar ratio of formaldehyde to phenol, reaction temperature, reaction time and
the formaldehyde capture agent on free formaldehyde content and the viscosity of the phenolic resin were
investigated. The results show that the foaming liquid phenolic resin obtained has free formaldehyde mass content
of 0.12% and viscosity of .97 a when the composite calalyst is used as the catalyst and its dosage is 5% of phenol
mass with gradual heating process, that is, the reaction is performed at 60-70 C for 3.0 hours, 80T for 2.5 hours
then 80 C for half an hour after adding hydroxylamine hydrochloride-urea composite formaldehyde capture agent
Keywords: phenolie resin; foaming; free formaldehyde; composite formaldehyde capture agent
酚醛树脂具有良好的耐酸性能、力学性能、性酚醛树脂:林强等"通过反应后期添加尿素作
耐热性能,且原料易得,合成方便。酚醛泡沫具有甲醛捕捉剂,得到游离甲醛质量分数为0.92%的酚
良好的保温效果,优良的耐燃烧性,燃烧时能自醛树脂。本工作采用复合催化剂并结合复合甲醛
熄、发烟量小、无滴落物、无毒等特点,作为保温捕捉剂,得到游离甲醛质量分数为0.12%的可发性
材料广泛用于航天、建筑、汽车等领域。酚醛树液态酚醛树脂。
脂中游离甲醛的含量较高?,毒性大,不仅危害
人体健康,还造成环境污染。因此,探索降低酚醛
树脂中游离甲醛含量是一件有意义的工作。
收稿日期:2014-07-27;修回日期:2014-10-2
近年来,科学家们在降低酚醛树脂中游离甲
作者简介:徐,女、1990年生、在读倾土研究生,主要从事
醛含量方面做了很多尝试和努力,并取得了较为
功能高分子材料的研究。联系电话:13817172714:E-mail
13817172714@163.com
丰硕的成果”9。罗翠锐等采用Ba(OH)2:8H20)*通信联系人。联系电话;(O2)6138060E-mahh
作催化剂,得到游离甲醛质量分数为1.40%的水溶
shu.edu. cn