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Dispersable thermoplastic mineral powder particle and preparing method thereof

A mineral powder, thermoplastic technology, applied in chemical instruments and methods, granulation of special adhesives, fibrous fillers, etc., can solve problems affecting product appearance and quality, difficult to disperse media, prone to delamination, etc., to reduce powder The body is flying, the operation is simple, and the quality is improved.

Inactive Publication Date: 2005-12-28
GUANGZHOU ECHOM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, talcum powder has many shortcomings in industrial application: talcum powder is too fine (greater than 1000 mesh), and it is easy to cause dust to fly in production and construction, thereby causing various inconveniences; Some industrial products, such as cosmetics, paints, plastics, etc., are difficult to disperse into the medium, and these products are prone to delamination after a period of time, which affects the appearance and quality of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Raw materials: 1kg of polyethylene glycol with a molecular weight of 2000, water, 99kg of talc of 1250 mesh;

[0021] (2) Preparation of talcum powder particles:

[0022] Dissolve 1 kg of polyethylene glycol with a molecular weight of 2000 in water to prepare a 10% solution; put 99 kg of 1250 mesh talc into a high-speed mixing mixer, slowly add the above polyethylene glycol solution, and mix at high speed for 5 minutes; The twin-screw extruder processes the above-mentioned talc powder mixture into preliminary particles, and then the preliminary particles are dried to a constant weight at 150° C., and after cooling, they become thermoplastic talc particles.

Embodiment 2

[0023] Example 2 Dispersion test:

[0024] The talc powder particles obtained in Example 1 are used as the filler of the paint to produce paint products. During the feeding process, the flying dust is less, which basically does not affect the feeding operation; after the talc powder particles of the formula amount are put into the material tank, Disperse with a disperser at a rotation speed of 1000 revolutions, and the coating composition is evenly dispersed after 5 minutes; the coating product does not produce delamination after standing for one year, and has good stability.

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PUM

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Abstract

The invention discloses an easily dispersible thermoplastic mineral powder particle. The mineral powder particles of the invention are composed of 95-99.8% by weight of mineral powder and 0.2-5% by weight of thermoplastic binder. The easily dispersible thermoplastic mineral powder particles of the present invention are easy to disperse, can reduce powder flying during use, reduce harm to the environment and production and construction personnel, and improve product quality at the same time, and can be applied to the fields of plastics, rubber, and coatings. The invention also discloses a preparation method of the above-mentioned mineral powder particles.

Description

Technical field [0001] The invention relates to a mineral powder particle, in particular to an easily dispersible thermoplastic mineral powder particle. The invention also relates to a preparation method of the mineral powder particles. Background technique [0002] Mineral powder, such as talc powder, is a unique natural mineral with a strong phosphorous structure and a variety of excellent physical and chemical properties, such as flexibility, whiteness, hydrophobicity, atmospheric stability, acid and alkali resistance, and chemical resistance. Inertness, high temperature melting, conductivity and absorption, the price of talcum powder is also relatively cheap. It is precisely because of its excellent physical and chemical properties and low price that talc powder is used in many industries, such as ceramics, papermaking, coatings, cosmetics, plastics, furniture, radio electronics and fireproof materials. But at the same time talc powder has many disadvantages in industrial app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J2/28C08K9/08C09C3/00
Inventor 陈广强罗忠富张振广
Owner GUANGZHOU ECHOM SCI & TECH CO LTD