Unlock instant, AI-driven research and patent intelligence for your innovation.

Finish composition

A composition and finishing agent technology, applied in fiber treatment, synthetic polymer artificial filament chemical post-treatment, coating, etc., can solve problems such as carbon fiber defects

Pending Publication Date: 2021-02-02
HEXCEL
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the finish composition is not applied uniformly, defects may appear in the resulting carbon 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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Finish composition
  • Finish composition
  • Finish composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0208] Tensile Strength

[0209] Tensile strength of carbon fiber samples was measured according to the procedure set forth in ASTM D-4018.

[0210] viscosity

[0211] All viscosity measurements were taken at 20°C on emulsions containing 20% ​​solids on a DV-I Prime Viscometer (Brookfield) equipped with a constant temperature water bath.

[0212] pH

[0213]All pH readings for the emulsions were taken with an ab Accumet Basic pH meter (Fischer Scientific) equipped with a temperature compensated probe.

[0214] Turbidity

[0215] The turbidity of the 20% solids emulsion was measured on a Hach 2100AN turbidimeter (Hach, USA) and reported in NTU units.

[0216] Tow Properties Evaluation

[0217] After carbonization, the carbon fibers were evaluated for fluff (broken filament count). This evaluation was performed using the tow evaluation line, the diagram of which is shown schematically at figure 1 middle.

[0218] Fluff: Broken filament counts (fluff 1 and fluff 2) were a...

Embodiment 1

[0243] In the emulsion of Comparative Example 1, 5 parts of DL-tartaric acid were dissolved.

Embodiment 2

[0245] In Inventive Example 2, 3 parts of fumaric acid were dissolved in the emulsion of Comparative Example 1.

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
boiling pointaaaaaaaaaa
boiling pointaaaaaaaaaa
boiling pointaaaaaaaaaa
Login to View More

Abstract

Provided is a composition for the treatment of fibers, such as PAN precursor fibers. The finish composition includes a polysiloxane; an emulsifier; water; and a dicarboxylic acid having a pKa from 1 to 4, and boiling point from 200 to 400 DEG C. The dicarboxylic acid may have the following formula (I) where R1 is absent or a saturated or unsaturated, linear or branched, aromatic substituted or unsubstituted, hydrocarbon group; Y1 and Y2 are independently hydrogen, nitrogen, oxygen, sulfur, phosphorus, C1-C6 alkyl group, or an alkoxy group; and X1 and X2 are independently one or more hydrogen atoms, a metal, a quaternary amine, or a hydrocarbon group having up to 6 carbon atoms, the hydrocarbon group being an alkyl group, an alkylene group, or an aromatic group, which may be branched or linear, and may optionally have one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus.

Description

technical field [0001] The present invention relates generally to finish compositions, and more particularly to finish compositions for treating polyacrylonitrile carbon fiber precursors. Background technique [0002] Carbon fiber has been used in a wide variety of structural applications and industries due to its desirable properties. For example, carbon fibers can form structural components that combine high strength and stiffness while being significantly lighter in weight than metal components of equivalent properties. One common method of making carbon fibers involves converting polyacrylonitrile (PAN) precursor fibers in a multi-step process in which the precursor fibers are heated, oxidized and carbonized to produce fibers with 90% carbon or more. The resulting carbon fibers can be molded into high-strength composites for structural applications, used in their pure form for electrical and tribological applications, or can be further processed for use in adsorbents, f...

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
Patent Type & Authority Applications(China)
IPC IPC(8): D01F11/06D06M13/192D06M15/643C08G77/26C08K5/092C09K23/42C09K23/44
CPCD01F11/06D06M13/192D06M15/6436D06M2200/40C08G77/26C09D183/04C09D183/08D01F9/22C08K5/092D06M13/17D06M13/188D06M13/2035D06M13/207D06M13/342D06M13/355D06M13/402D06M15/643D06M2101/28C08L83/08
Inventor M·E·约琴科
Owner HEXCEL