Preparation method of carrier-free talcum powder master batch

A talcum powder masterbatch, carrier-free technology, applied in the field of talc powder, can solve the problems of complex processing technology, complex production technology and the like, and achieve the effect of being difficult to pulverize

Active Publication Date: 2010-08-04
SHENYANG POLYTECHNIC UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the processing technology is relatively complex
[0005] In terms of granulation, technologies such as extruded strand water cooling, hot-cut water-cooled or hot-cut air-cooled extrusion granulation a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 96kg of water and 4kg of polyvinyl alcohol for mixing. Take 20kg of mixed additives and 80kg of 300 mesh talcum powder for uniform mixing. Put the mixed talcum powder into the extruder and extrude at room temperature. The granulation extrusion pressure is 1 trillion. The diameter of the extruded particles is 3mm and the length is 6mm. The extruded particles are dried at 150°C for 1 hour to obtain the product.

Embodiment 2

[0021] Take 76.5kg of water, 13.5kg of ethanol, and 10kg of sodium silicate for mixing. Take 15kg of mixed additives and 85kg of 5000 mesh talcum powder for uniform mixing. Put the mixed talcum powder into the extruder and extrude at room temperature. The output pressure is 1.5 MPa, the diameter of the extruded particles is 1 mm, and the length is 4 mm. The extruded particles are dried at 120° C. for 0.5 hours to obtain the product.

Embodiment 3

[0023] Take 94.05 kg of water, 4.95 kg of butanol, and 1 kg of potassium silicate for mixing. Others are the same as in Example 2.

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PUM

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Abstract

The invention relates to a talcum powder, in particular to a preparation method of carrier-free talcum powder master batch. The preparation method of the carrier-free talcum powder master batch comprises the following steps of: preparation of additive: mixing diluent and binding agent according to a certain proportion, wherein the diluent accounts for 90-99 percent, and the binding agent accounts for 1-10 percent; treatment of the talcum powder: stirring and mixing the mixed additive and talcum powder, wherein the additive accounts for 15-35 percent, and the talcum powder accounts for 65-85%; molding of the talcum powder: putting the mixed talcum powder into an extruder for extruding at the normal temperature, controlling the pelleting pressure to be 1-2 MPa, the diameter of the extruded granule to be 1-5mm and the length-diameter ratio to be 1-4; and drying the extruded granules at 120-180 DEG C for 0.5-1h, and obtaining the product, wherein the percent is weight percent. The preparation method has the advantages of solving the environment problem caused by rising powder in the using process of the traditional talcum powder.

Description

Technical field [0001] The invention relates to a talc powder, in particular to a preparation method of a carrier-free talc powder master batch. Background technique [0002] Talc is a water-containing silicate mineral with a layered structure. It is commonly used as a flaky, scaly or dense block-like aggregate. Its structural unit layers are maintained by molecular bonds, and there are ionic bonds on the interlayer. Covalent bond. The two structural unit layers are interlayer domains, which do not contain water or cations. The unit layers are only connected by weak van derwaals, so it is easy to dissociate into thin wafers. The flaky structure of talc powder allows certain properties of the material to be greatly improved when talc powder is filled with plastics. First of all, talc powder can improve the stiffness of the filling material and its creep resistance at high temperatures. When talc particles are arranged in the direction of material flow during processing, accordi...

Claims

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Application Information

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IPC IPC(8): C08K3/38C08K7/16C08K9/00B01J2/20
Inventor 王松杨雪张爱玲黄亮
Owner SHENYANG POLYTECHNIC UNIV
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