Cleaning method for polyacrylonitrile precursor spinning spinneret

A polyacrylonitrile and spinneret technology, which is applied in spinneret assemblies, textiles and papermaking, etc., can solve the problems of difficult to achieve cleaning effect and long cleaning time.
CN103451748AActive Publication Date: 2013-12-18NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
7 Cites 12 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Publication Date
2013-12-18

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

Abstract

The invention discloses a cleaning method for a polyacrylonitrile precursor spinning spinneret. The cleaning method comprises the step of performing ultrasonic cleaning treatment on the spinneret by nitric acid added with inorganic particles. The invention further discloses a multi-step cleaning method for the polyacrylonitrile precursor spinning spinneret in combination with the cleaning method. The method is short in cleaning time and good in cleaning effect.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of maintenance and treatment of polyacrylonitrile raw silk spinning machine parts, in particular to a method for cleaning a polyacrylonitrile raw silk spinning spinneret. Background technique

[0002] Carbon fiber has many excellent properties such as low density, high specific strength, high specific modulus, high temperature resistance and corrosion resistance, and has been widely used in various fields of aerospace, national defense and civilian industries. According to the raw material route, carbon fiber can be divided into three types: polyacrylonitrile (PAN)-based, pitch-based and viscose-based. Among them, PAN-based carbon fiber has become a carbon fiber with the fastest development, the highest output, the most varieties and the widest application due to its simple production process, low production cost and excellent mechanical properties.

[0003] It is well known that high-quality PAN precursors...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More