Method for preparing single-piece talcum powder

A talcum powder, monolithic technology, applied in the direction of magnesium silicate, silicate, etc., can solve the problems of low preparation efficiency of talc powder, inability to be widely used in the field of fillers, etc., and achieve significant market application value, high added value, and reduced production. cost effect

Active Publication Date: 2017-06-13
桂林龙胜正大粉体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the low production efficiency of the current talc powder, the structural defects caused by the preparation of the monolithic talcum powder, and the inability to be widely used in the field of fillers. The present invention provides a method for preparing monolithic talcum powder. Cutting and stretching to prepare monolithic talc powder, specifically, the ta

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] 1) Add 80 parts by weight of talc powder, 1 part by weight of silane coupling agent, and 0.5 parts by weight of active agent zincate into a high-speed mixing mixer, and mix and disperse for 10 minutes at a speed of 600 rpm to obtain a premix;

[0026] 2) Add the premix obtained in step 1), 2 parts by weight of expansion agent polyethylene glycol, and 1 part by weight of foaming agent p-benzenesulfonyl hydrazide into the closed dispersing mixer, and the temperature of the dispersing mixer is controlled at 60°C to Disperse and mix at a speed of 1,000 rpm, and at the same time turn on the vacuum negative pressure, disperse for 20 minutes, so that the expansion agent and foaming agent are uniformly dispersed in the talc layer structure to obtain an intercalation premix;

[0027] 3) Add the intercalation premix obtained in step 2) to the multi-stage disc mixer, set the multi-stage disc mixer at 600 rpm and temperature at 120°C, and the expansion agent and foaming...

Example Embodiment

[0030] Example 2

[0031] 1) Add 90 parts by weight of talc powder, 2 parts by weight of coupling agent stearate, and 0.5 parts by weight of active agent phosphate into a high-speed mixing mixer, and mix and disperse for 5 minutes at a speed of 1200 rpm to obtain a premix;

[0032] 2) Add the premix obtained in step 1), 1 part by weight of the expansion agent sodium alginate, and 1 part by weight of the foaming agent bisphenylsulfonyl hydrazide into the closed dispersing mixer. The temperature of the dispersing mixer is controlled at 80°C and 400 rpm Disperse and mix at a speed while turning on the vacuum negative pressure and disperse for 20 minutes, so that the expansion agent and foaming agent are uniformly dispersed in the talc layered structure to obtain an intercalation premix;

[0033] 3) Add the intercalation premix obtained in step 2) to the multi-stage disc mixer, which is equipped with 2 pairs of intersecting disc-type shear elements and 2 pairs of tooth disc-type dispersi...

Example Embodiment

[0036] Example 3

[0037] 1) Add 85 parts by weight of talc powder, 1 part by weight of silane coupling agent, and 0.5 part by weight of active agent aluminate into a high-speed mixing mixer, and mix and disperse for 10 minutes at a speed of 600 rpm to obtain a premix;

[0038] 2) Add the premix obtained in step 1), 5 parts by weight of the expansion agent β-cyclodextrin and 2 parts by weight of the blowing agent p-toluenesulfonyl hydrazide into the closed dispersing mixer, and the temperature of the dispersing mixer is controlled at 90 ℃, disperse and mix at a speed of 800 rpm, and at the same time turn on the vacuum negative pressure, disperse for 15 minutes, so that the expansion agent and the foaming agent are uniformly dispersed in the talc layer structure to obtain an intercalation premix;

[0039] 3) The intercalation premix obtained in step 2) is added to the multi-stage disc mixer. The multi-stage disc mixer includes 3 pairs of intersecting disc type shearing elements and 4 ...

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Abstract

The invention provides a method for preparing single-piece talcum powder. The method for preparing the single-piece talcum powder by collaborative foaming expansion shear tensile specifically comprises the following steps: firstly, preprocessing the talcum powder by a swelling agent to increase an interval between talcum powder layers so as to enable a foaming agent to be dipped between the talcum powder layers, and enabling the talcum powder layers to relatively slide; utilizing a multistage millstone type mixing mill for shearing and peeling to enable the talcum powder layers to be peeled, and forming the talcum powder of a single-layer laminated structure. The talcum powder prepared with the method is the single-layer laminated talcum powder and has the advantages of high preparation efficiency and high additional value, and the layer structure of the talcum powder is not damaged. The talcum powder is used for composite materials, has a high enhancement function, has transparency, can be widely added into products including plastics, high-class coatings and the like, is suitable for scale production and has an obvious market application value.

Description

technical field [0001] The invention relates to the field of inorganic non-metallic mineral materials, in particular to a method for preparing monolithic talc powder. Background technique [0002] Talc is a white, soft, hydrophobic mineral with a magnesium silicate structure containing water of crystallization. It consists of a three-layer structure: two silicon-containing layers sandwiching a magnesium oxide or magnesium hydroxide layer. Unlike other silicate layered minerals (such as china clay), the three-layer structure of talc crystals is in perfect electrical balance, making it inherently charged with little or no charge. The lack of charge makes talc a non-polar or hydrophobic mineral, which makes it better adsorbed on other hydrophobic substances such as stickies and resins, which is why talc is widely used as a resin and glue. The cause of sticky control agents. [0003] Talc powder is one of the most important inorganic chemical products today. Due to the advan...

Claims

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Application Information

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IPC IPC(8): C01B33/22C08K7/00C08K3/34
CPCC01B33/22C01P2006/12C01P2006/90C08K3/34C08K7/00C08K2201/006
Inventor 陈庆曾军堂陈兵
Owner 桂林龙胜正大粉体科技有限公司
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