均聚甲醛

均聚甲醛

1

介绍了兼有一般均聚甲醛和共聚甲醛性能之第二代共聚甲醛的结构和特性。

The article discussed the structure and characteristic of second generation co-POM which have properties of general homo-POM and co-POM .
2

均聚甲醛的先进工艺；

Adopting the advanced process of formaldehyde homopolymerization .
3

TG分析数据也显示改性后的聚甲醛体系在氮气中的Tonset明显高于空白POM，空气中空白POM的活化能及分解温度均低于改性聚甲醛。

TGA analysis indicate that compared with the blank POM , the modified POM has higher T_ ( onset ) in nitrogen and higher degradation temperature as well as activation energy in air .
4

按组织学类型分为：水肿型53例，腺囊泡型19例，纤维型15例。上述标本均采用4%多聚甲醛固定，石蜡包埋，连续切片，HE染色，病理证实。

There are 53 cases of edematous type , 19 cases of glandular type and 15 cases of cystic fibrous type according to histopathologic characteristics of nasal polyps .