Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of continuous endless tow phenolic fibers

A technology of phenolic fibers and filament bundles, which is used in the preparation of spinning solutions, heat treatment of rayon filaments, and conjugated synthetic polymer rayon filaments, etc., to achieve the effects of significant energy saving, good continuity, and shortened crosslinking time.

Inactive Publication Date: 2019-12-31
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies in the prior art and solve the technical problems of the melt-spinning process in engineering scale-up and large-scale production, the invention provides a method for preparing continuous filament bundle phenolic fibers

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of continuous filament bundle phenolic fiber, comprising the following steps:

[0020] S1. Preparation of spinning stock solution: the mixed solution of thermosetting phenolic resin and PVA is used to prepare spinning stock solution. The preparation of spinning stock solution adopts the preparation method in a patented stock solution for spinning phenolic fiber and its preparation method (201110319102.6). The viscosity range of the obtained spinning dope is 5000mPa.s;

[0021] S2, preparation coagulation bath solution: coagulation bath solution is the aqueous solution of the sulfuric acid of 1wt% sodium borate, 37wt% sodium sulfate and concentration;

[0022] S3, drafting and coagulation: the spinning stock solution prepared in step S1 is drafted in the coagulation bath solution prepared in step S2, the drafting and coagulation process is 7 stages, and the total drafting ratio is 15 times;

[0023] S4. Heating and curing cross-linking of fibers: wa...

Embodiment 2

[0025] A preparation method of continuous filament bundle phenolic fiber, comprising the following steps:

[0026] S1, preparation of spinning stock solution: the mixed solution of thermosetting phenolic resin and PVA is used to prepare spinning stock solution, and the viscosity range of the obtained spinning stock solution is 20000mPa.s;

[0027] S2, preparation coagulation bath solution: coagulation bath solution is the aqueous solution of the hydrochloric acid of 4wt% calcium borate, 74wt% calcium chloride and concentration;

[0028] S3, drafting and coagulation: the spinning stock solution prepared in step S1 is drafted in the coagulation bath solution prepared in step S2, the drafting and coagulation process is 3 stages, and the total drafting ratio is 3 times;

[0029] S4. Heating and curing cross-linking of fibers: wash and dry the fibers after drawing in step S3, then heat and cure and cross-link them. Long tow phenolic fibers.

Embodiment 3

[0031] A preparation method of continuous filament bundle phenolic fiber, comprising the following steps:

[0032] S1, preparation of spinning stock solution: the mixed solution of thermosetting phenolic resin and PVA is used to prepare spinning stock solution, and the viscosity range of the obtained spinning stock solution is 13000mPa.s;

[0033] S2, preparation coagulation bath solution: coagulation bath solution is the aqueous solution of the phosphoric acid of 6wt% boric acid, 25wt% magnesium sulfate and concentration;

[0034] S3, drafting and coagulation: the spinning stock solution prepared in step S1 is drafted in the coagulation bath solution prepared in step S2, the drafting and coagulation process is 5 stages, and the total drafting ratio is 8 times;

[0035] S4. Heating and curing cross-linking of fibers: wash and dry the fibers after drawing in step S3, then heat and cure and cross-link. The curing and cross-linking temperature is 140°C, and the time is 100 minute...

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

PUM

PropertyMeasurementUnit
Viscosityaaaaaaaaaa
Viscosity rangeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of continuous endless tow phenolic fibers, belongs to the technical field of phenolic fiber preparation methods, and solves the technical problems of a melt spinning process in engineering enlargement and scale production. By the aid of the characteristic that thermosetting phenolic resin is further crosslinked and cured when being heated, the thermosetting phenolic resin is prepared into spinning solution, spinning, coagulating bath forming and drafting are performed to obtain phenolic resin precursor fibers, and then the phenolic resin precursorfibers are heated, crosslinked and cured to obtain the phenolic fibers. The endless tow phenolic fibers difficultly prepared by a traditional melt spinning process can be prepared, and the preparationmethod has the advantages of process continuity, easiness in engineering enlargement, energy conservation, environmental protection, low requirements for personnel protection and equipment anticorrosion and the like.

Description

technical field [0001] The invention relates to a method for preparing continuous filament bundle fibers, in particular to a new process for preparing filament bundle phenolic fibers by spinning phenolic resin solution. Background technique [0002] Phenolic fiber is a special fiber that integrates multiple functions such as temperature resistance, heat insulation, flame retardancy, corrosion resistance, and sound insulation. It has broad application prospects in the application fields of flame retardant, high temperature thermal protection, thermal insulation, insulation and sound insulation, chemical protection, and indoor high-grade flame retardant decoration materials such as aircraft and submarines, and has been monopolized by Kynol in the world. [0003] At present, the production process of phenolic fiber manufacturers and the test process of scientific research institutions are concentrated on the melt spinning process. Due to the limitations of the process method an...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D01D5/06D01D1/02D01D5/14D01D10/02D01F8/10D01F8/16
CPCD01D1/02D01D5/06D01D5/14D01D10/02D01F8/10D01F8/16
Inventor 刘占军张东卿李宏弟宋燕郭全贵
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com