旭化成

介绍了日本旭化成公司的聚甲醛制造技术：①用甲醛缩二甲醇生产高浓度甲醛；

Asahi Kasei Co. of Japan produces polyformaldehyde with the following technology : ① To produce high concentration formaldehyde from formaldehyde dimethyl acetal .

日本旭化成开发了一种更经济和更安全的水合工艺。这一工艺的关键在于催化剂的选择。

Asahi Chemical Co. has developed a more economical and safer process , and the key point of the technology is the selection of the catalyst .

旭化成改进型离子膜复极单元槽检修技术

Check and repair technique of AK modified bipolar ionic membrane element

简要介绍了旭化成高电流密度电解槽的结构和工艺特点，通过考核及运行表明该型槽在技术上有较明显的提升，可在高电流密度条件下运行。

The structure and process characteristics of electrolyzer with high current density produced by Asahi Chemical Industry Co. , Ltd. were introduced briefly .

介绍了旭化成复极单元槽的基本结构，检查试验方法和修理技术要领。

The basic structure of AK modified bipolar ionic membrane element , its method of check and test , and essentials of repair were introduced .

结合日本旭化成公司1万t/a离子膜法烧碱装置工艺流程，介绍控制系统的设计思想、构成及功能。

A control system that is imported from a Japanese company for preparation of caustic soda by ionic membrane process is introduced in this paper .

自制原丝的结晶度、取向度和强度高于日本旭化成原丝，但由前者制得的碳纤维性能却不及后者，说明非晶态结构对碳纤维性能也有较大影响。

The crystallization , the orientation and the tensile strength of self-made precursor fibers were higher than those of Japanese fibers . However , the properties of the resultant self-made carbon fibers were lower than the latter , which might be accounted for the influence of the non-crystal structure .