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

A kind of method for preparing PTFE modified inorganic powder composite filler

A PTFE, inorganic powder technology, applied in inorganic pigment processing, fibrous fillers, chemical instruments and methods, etc., can solve problems such as difficulty in popularization and application, achieve wide application prospects, improve compatibility, and modify matrix properties Effect

Active Publication Date: 2020-12-11
ANHUI ESTONE MATERIAL TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The common feature of the methods used in the above patents is that after the inorganic particles and PTFE are modified and compounded, the final composite material must be formed and sintered. The obtained material is in the form of a film or plate, which is difficult to be popularized and applied.

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
  • A kind of method for preparing PTFE modified inorganic powder composite filler
  • A kind of method for preparing PTFE modified inorganic powder composite filler
  • A kind of method for preparing PTFE modified inorganic powder composite filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Treat the surface of 0.2um PTFE powder with a low-temperature plasma generator for 20 minutes under Ar atmosphere, and place it in the air for 3 hours. Disperse the treated powder into an aqueous solution with a solid content of 5%. First, place the PTFE slurry in a constant temperature water bath at 70°C. Mix vinylsilane: water: ethanol by ultrasonic at 4:1:4 for 20 minutes, vinyl The amount of base silane is 2% of the solid content, and then added to the PTFE slurry, reacted for 4 hours, filtered and dried, and the obtained powder is PTFE modified powder.

[0035] (2) Silica is treated with vinyl silane coupling agent, first place the silica slurry in a 70°C constant temperature water bath, mix vinyl silane: water: ethanol in 4:1:4 ultrasonically for 20 minutes, vinyl The amount of base silane is 2% of the solid content, and then added to the silica slurry, reacted for 4 hours, filtered and dried, this is silica modified powder.

[0036](3) Add 0.15g hydrogen-con...

Embodiment 2

[0038] (1) Treat the surface of 0.2um PTFE powder with a low-temperature plasma generator for 20 minutes under Ar atmosphere, and place it in the air for 3 hours. Disperse the treated powder into an aqueous solution with a solid content of 5%. First, place the PTFE slurry in a constant temperature water bath at 70°C. Mix aminosilane: water: ethanol by ultrasonic at 4:1:4 for 20 minutes. Aminosilane The dosage is 2% of the solid content, and then added to the PTFE slurry, reacted for 4 hours, filtered and dried, and the obtained powder is PTFE modified powder.

[0039] (2) Silica is treated with a silane coupling agent containing epoxy groups. First, put the silica slurry in a constant temperature water bath at 70°C, and ultrasonically mix epoxy silane: water: ethanol at a ratio of 4:1:4. Mix for 20 minutes, the amount of epoxy silane is 2% of the solid content, then add to the silica slurry, react for 4 hours, filter and dry, this is silica modified powder.

[0040] (3) Add P...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a PTFE modified inorganic powder composite filler, and relates to the technical field of polymer composite materials. In view of the problem that PTFE ispoor in compatibility with other polymers and inorganic powder and is difficult to directly serve as the filler to be applied to the polymer matrix modification, the invention provides a method for uniformly coating PTFE with the silicon dioxide, by which the compatibility of the PTFE with the polymers and inorganic filler is remarkably improved. The size distribution of the treated silicon dioxide is not greatly changed, and the treated silicon dioxide can be added into a required matrix in the form of filler, so that the aim of modifying the performance of the matrix is fulfilled, and the method has a wider application prospect.

Description

Technical field: [0001] The invention relates to the technical field of polymer composite materials, in particular to a method for preparing PTFE modified inorganic powder composite fillers. Background technique: [0002] PTFE is a polymer material with excellent comprehensive properties. It has excellent high and low temperature resistance and chemical corrosion resistance, and has excellent dielectric properties and extremely small friction coefficient, but poor creep resistance and adhesion to other materials The disadvantages of poor performance, poor resilience and easy wear limit its application. In particular, the poor compatibility and bonding with inorganic materials greatly limits its application fields. There are many modifications to PTFE, but the preparation method of PTFE-coated silica filler has not been reported yet. [0003] It is a relatively common technology to treat the surface of PTFE by radiation method to improve its surface hydrophilicity and adhes...

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 Patents(China)
IPC IPC(8): C09C1/28C09C3/10C09C3/12
CPCC09C1/28C09C3/006C09C3/10C09C3/12
Inventor 蒋学鑫张轲轲
Owner ANHUI ESTONE MATERIAL TECH CO LTD