|
|
|
| Study on process management of copolymeric formaldehyde preparation |
| Jia Jingbo |
| Tangshan Zhonghao Chemical Corporation Ltd., Tangshan 063611, China |
|
|
|
|
Abstract The quality of copolymerized formaldehyde products was associated with raw material quality, polymerization reaction, reaction after treatment effect, additive type and many other factors. The practice had proved that the polymerization reaction determines the final product quality of the production of copolymeric formaldehyde. Impurities such as moisture, methanol, formic acid in raw materials, reaction temperature, and the inclusion ratio of chain initiator, transfer agent, terminator, and these effects on polymerization are so great that it is difficult to initiate polymerization. Polymerization reaction could be divided into four stages: chain initiation, chain growth, and chain transfer and chain termination. There was a semi-acetal terminal group at the end of the polyformaldehyde original powder chain produced by the polymerization reaction, which is extremely unstable to the heat, so it needs to be sealed and stabilized. After adding additives such as antioxidant, granulation was carried out, and finally qualified products were obtained.
|
|
|
|
|
|
| [ 1 ] 李 磊. 共聚甲醛生产技术难点与对策研究[ J ]. 化工管理，2016（ 29 ）：194 - 196．
[ 2 ] 王立辉，刘瑞英，王 娜，等. 甲醛及多聚甲醛的生产技术[ J ]. 河北化工，2012，35（ 12 ）：25 - 28．
[ 3 ] 李武斌，李颖悟，江依红. 共聚甲醛聚合反应影响因素探析[ J ]. 塑料工业，2018，46（ 10 ）：40 - 41.
[ 4 ] 方 伟，袁 伟. 国内共聚甲醛合成工艺分析[ J ]. 精细石油化工进展，2012（ 2 ）：44 - 48．
[ 5 ] 李武斌，江依红. POM生产中常见杂质对聚合反应的影响[ J ]. 化工管理，2015（ 1 ）：53 - 54．
[ 6 ] 张丽娟，成 睿. 抗氧剂1010对聚甲醛性能的影响[ J ]. 化工进展，2011，30（ 8 ）：1 795 - 1 799. |
|
|
|
