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Mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates and a method of producing the same

A polar crystal and polyimide technology, which is applied in the field of polyimide-fluororesin-polar crystal microparticle mixed aqueous dispersion and its preparation, can solve the problems of processing characteristics (safety, environmental load, and equipment cost) and other problems, to achieve the effect of excellent handling characteristics and excellent heat resistance

Active Publication Date: 2021-10-22
JAPAN MATEX CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to uniformly disperse polyimide and fluororesin, the composition described in Patent Document 1 uses an organic solvent as a solvent, causing problems in handling characteristics (safety, environmental load, equipment cost, etc.)

Method used

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  • Mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates and a method of producing the same
  • Mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates and a method of producing the same
  • Mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates and a method of producing the same

Examples

Experimental program
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Effect test

preparation example Construction

[0137] The preparation method of this mixed aqueous dispersion comprises the steps of grinding and sieving the polar crystal microparticles to obtain polar crystal microparticles with a particle size of 3 μm or less, preparing the dispersion liquid 1 containing the aforementioned polar crystal microparticles, preparing Steps of dispersion liquid 2 of imide precursor or polyimide, preparation of dispersion liquid 3 containing fluororesin, and steps of mixing dispersion liquid 1, dispersion liquid 2, and dispersion liquid 3 above.

[0138] The preparation method of this mixed aqueous dispersion can further include, the step of adding potassium persulfate to water to prepare an aqueous solution of potassium persulfate, the step of preparing the dispersion 4 containing aluminum oxide, and mixing the entire dispersion with potassium persulfate The step of mixing the aqueous solution.

[0139] In another embodiment, the preparation method of this mixed aqueous dispersion comprises t...

Embodiment

[0156] The present invention will be described in more detail through examples below, but the present invention is not limited to these examples.

[0157]

[0158] The performance of the aqueous dispersion of the present invention as a coating agent is confirmed by a 100-grid test.

[0159] The configurations and production methods of Examples and Comparative Examples are as follows.

[0160] (Example)

[0161] The compositions of the examples are shown below.

[0162] Polyimide dispersion liquid (W-20; manufactured by Nakata Coating Co., Ltd.): 30% by weight

[0163] PTFE dispersion (PTFE-D; manufactured by Daikin Industries): 70% by weight

[0164] Aluminum sol (Al-L7; manufactured by Taki Chemical): 5% by weight

[0165] Potassium persulfate: 1% by weight

[0166] Pink tourmaline dispersion: pink tourmaline (produced in Sri Lanka) with a particle size of 3 μm or less was prepared into 30%, 10%, and 5% dispersions.

[0167] The formulation of the examples is shown be...

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Abstract

Provided are a mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates with excellent handleability (e.g. safety, environmental burden, equipment cost) as well as excellent adhesion performance and heat resistance performance without the use of an organic solvent, and a method of producing the same, and a new method of coating. A mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates according to the present invention comprises a polyimide, fluororesin, polar crystal particulates, and water.

Description

technical field [0001] The present invention relates to a polyimide-fluororesin-polar crystal microparticle mixed aqueous dispersion and a preparation method thereof, and more specifically relates to excellent handling characteristics (safety, environmental load, equipment) without using an organic solvent Cost, etc.) are related to the water-based polyimide-fluororesin-polar crystal microparticle mixed dispersion and its preparation method with excellent adhesion and heat resistance. [0002] Further, the present invention is about a new polyimide-fluororesin-polar crystal microparticle mixed aqueous dispersion and its preparation method, which can be achieved by allowing the polar crystal microparticles to The co-existence of non-toxic crystal particles mixed with aqueous dispersions has far surpassed the high-performance bonding and adhesion functions of previous products, and can also form excellent heat resistance, insulation, radiation heat dissipation, rust resistance a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/18C09D179/08C09D5/08C09D5/25C09D7/61
CPCC09D127/18C09D5/08C09D5/18C09D7/61C08K2003/387C08L2201/08C08K2003/2227C08L79/08C08K3/38C08K3/34C08K3/22B05D7/14B05D5/083B05D3/0254C08K2201/003C08K2003/3045C08K2003/329C09D179/08C08F214/262Y02E60/50C08L27/12C08K3/30C08K3/32C08L27/18B05D2505/50C08L2201/54B05D2506/15
Inventor 塚本胜朗塚本浩晃
Owner JAPAN MATEX CO LTD
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