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Composite micropowder and method for manufacturing the same, ceramic paint, and protection coating

一种复合材料、陶瓷涂料的技术，应用在涂层、薄料处理、运输和包装等方向，能够解决无法长期保持不黏性等问题，达到好兼容性及不黏性、优异不黏性、步骤简单的效果

Active Publication Date: 2014-06-11
GRAND TEK ADVANCE MATERIAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the safety advantages of ceramic coatings, the application on cookware has developed rapidly, but the biggest disadvantage has always been the inability to maintain non-stickiness for a long time

Method used

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  • Composite micropowder and method for manufacturing the same, ceramic paint, and protection coating
  • Composite micropowder and method for manufacturing the same, ceramic paint, and protection coating
  • Composite micropowder and method for manufacturing the same, ceramic paint, and protection coating

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preparation example Construction

[0020] The present invention also provides a method for preparing the composite material micropowder, which has the advantages of simple steps, no need for thermal cracking or radiation cracking, safety and environmental protection, and low cost.

[0021] In one embodiment of the present invention, the preparation method of composite material micropowder comprises: uniformly mixing 100 parts by weight of fluoropolymer and 10-140 parts by weight of silane. Depending on the mixing situation, an appropriate solvent can be added to wet the fluoropolymer. The solvent is not particularly limited, and any solvent that can wet the fluoropolymer can be used. Alcohols such as methanol, ethanol, isopropanol, or benzene can be used Such as toluene or xylene.

[0022] In one embodiment of the present invention, 60-80% of 10-140 parts by weight of silane can be further replaced with silica sol, silicate such as sodium silicate, or a combination of the above to further improve the resistance...

Embodiment 1

[0057] Embodiment 1 (composite material micropowder comprising PTFE)

[0058] Add 1000g of PTFE powder (CGM031B) into the reaction vessel, add an appropriate amount of methanol, stir to wet the PTFE powder, then add 100g of phenyltrimethoxysilane and stir evenly, then add 0.01g of concentrated sulfuric acid as a catalyst and mix evenly, and finally add 10g of water, control the reaction temperature not to exceed 45°C for 4 hours.

[0059] The mixture was heated to boiling to remove moisture, then filtered with a 100-mesh filter cloth to obtain a wet powder, and dried at 150° C. for 4 hours to obtain a dry powder (weighing 1053 g). The dry powder is classified by jet crushing to obtain PTFE-containing composite material powder with a particle size of 10 μm.

Embodiment 2

[0060] Embodiment 2 (composite material micropowder comprising PTFE)

[0061] Add 1000g of PTFE powder (CGM031C) into the reaction vessel, then add 300g of phenyltrimethoxysilane and 600g of sodium silicate and stir evenly, then add 1g of hydrochloric acid as a catalyst and mix well, and finally add 120g of water, and control the reaction temperature not to exceed 45°C React for 6 hours.

[0062] The mixture was heated to boiling to remove moisture, then filtered with a 100-mesh filter cloth to obtain a wet powder, and dried at 200° C. for 3 hours to obtain a dry powder (weighing 1430 g). The dry powder is classified by jet crushing to obtain PTFE-containing composite material powder with a particle size of 1 μm.

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Abstract

Disclosed is a method of forming a composite micropowder, including mixing 100 parts by weight of fluorine-containing polymer, 10 to 140 parts by weight of silane, catalyst, and water, such that the silane is in-situ polymerized in the fluorine-containing polymer to form a polysiloxane, and the fluorine-containing polymer and the polysiloxane form a composite. The composite is dried, and then physically crushed to form composite micropowder. The total weight of the fluorine-containing polymer and the silane and the weight of the catalyst have a ratio of 100:0.1 to 100:0.0001. The silane and the water have a molar ratio of 1:0.5 to 1:3. The composite micropowder has a diameter of 0.1 [mu]m to 15 [mu]m. The fluorine-containing polymer and the polysiloxane in the composite micropowder have a weight ratio of 95:5 to 60:40. The composite micropowder has excellent non-sticky property, manufactured in a simple way, safe, environmentally-friendly and low in cost.

Description

technical field [0001] The invention provides a composite material micropowder of a fluorine-containing polymer, and particularly relates to its preparation method and application. Background technique [0002] Fluoropolymers, especially polytetrafluoroethylene, have the highest chemical inertness among all polymers, and have unique properties such as weather resistance, electrical insulation, low friction coefficient, and chemical resistance, and have been widely used in aviation, automobiles, etc. , petroleum and chemical industries. Fluoropolymer micropowder, especially polytetrafluoroethylene (PTFE) micropowder, has a fine and soft particle size, good dispersion ability, and can be evenly dispersed in other substrates, thereby changing the properties of other substrates (such as improving lubrication) properties, improve wear resistance, enhance scratch resistance, increase release properties, impart stain resistance, improve flame retardancy, and increase water repelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/12C08L27/18C08L83/04C09D7/12C09D1/00
CPCC08J2300/102C08J3/126C08L83/04C08L27/18C09D5/38C08J2327/18C08J3/005C09D1/00C08J3/12C09D183/04C09D5/031C08J2483/04C09D127/18C08G77/18C08G77/80C09D5/033Y10T428/2982Y10T428/31663C08K3/36C08K3/20C08K3/34C08K5/09
Inventor 林学佐陈欣宏锺迪克
Owner GRAND TEK ADVANCE MATERIAL SCI
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