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Modified talcum powder and preparation method thereof as well as polypropylene composite and preparation method thereof

A composite material and talc technology, applied in the field of modified materials, can solve problems such as intractability, and achieve the effect of preventing and avoiding agglomeration

Active Publication Date: 2017-09-08
JILIN HENGHUI NEW MATERIAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the particle size of talcum powder reaches more than 10,000 mesh, it is difficult to handle because the particle size is too small and easy to agglomerate.

Method used

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  • Modified talcum powder and preparation method thereof as well as polypropylene composite and preparation method thereof
  • Modified talcum powder and preparation method thereof as well as polypropylene composite and preparation method thereof
  • Modified talcum powder and preparation method thereof as well as polypropylene composite and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0064] The present invention also provides a method for preparing the polypropylene composite material described in the above technical solution, comprising the following specific steps:

[0065] Dry blending a mixture comprising polypropylene, toughening agent, modified talc powder, primary antioxidant, secondary antioxidant and lubricant to obtain a dry blend;

[0066] The dry blend is melt-extruded to obtain a polypropylene composite material.

[0067] The invention dry mixes the mixture comprising polypropylene, toughening agent, modified talcum powder, primary antioxidant, secondary antioxidant and lubricant to obtain a dry mix. In the present invention, the dry blending is preferably performed in a high-speed mixer. In the present invention, the dry mixing speed is preferably 650 to 750 rpm, more preferably 670 to 730 rpm, most preferably 690 to 710 rpm; the dry mixing time is preferably 1 to 700 rpm. 4 minutes, specifically 1 minute, 2 minutes, 3 minutes or 4 minutes....

Embodiment 1

[0073] Mix 1 part monobasic sodium phosphate and 1 part water to make a pretreatment.

[0074] 100 parts of talcum powder and 1 part of pretreatment agent were mixed, and heat-treated at 120° C. at a high-speed stirring rate of 700 rpm for 30 minutes to obtain pretreated talc powder.

[0075] Mix 1 part of monoalkoxy phosphate titanate with 100 parts of the pretreated talc powder, and perform coupling treatment at a high-speed stirring rate of 700 rpm for 30 minutes to obtain modified talc powder.

Embodiment 2

[0077] Mix 1 part potassium monobasic phosphate and 1 part water to make a pretreatment.

[0078] 100 parts of talcum powder and 1 part of pretreatment agent were mixed, and heat-treated at 120° C. at a high-speed stirring rate of 700 rpm for 30 minutes to obtain pretreated talc powder.

[0079] Mix 1 part of monoalkoxy phosphate titanate with 100 parts of the pretreated talc powder, and perform coupling treatment at a high-speed stirring rate of 700 rpm for 30 minutes to obtain modified talc powder.

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Abstract

The invention provides modified talcum powder and a preparation method thereof. According to the technical scheme provided by the invention, a brucite component in the talcum powder can react with a pretreatment agent, so that Vander Wale force of the talcum powder is damaged; interlayer stripping is generated; meanwhile, the size of the talcum powder is decreased; through treatment of a coupling agent, the agglomeration of the talcum powder can be effectively avoided. Through the modified talcum powder obtained by the modification method, the phenomenon of agglomeration of the talcum powder can be avoided.

Description

technical field [0001] The invention relates to the technical field of modified materials, in particular to a modified talc powder and a preparation method thereof, a polypropylene composite material and a preparation method thereof. Background technique [0002] Talc is a hydrated silicate with the chemical formula 3MgO.4SiO 2 .H 2 O, the crystal shape can be flake, leaf, needle or block. The structure of pure talc is composed of a layer of brucite sandwiched between two layers of silicon dioxide. The layers are superimposed on each other. The adjacent talc layers rely on weak van der Waals forces to bond. Relative sliding between. When the van der Waals force between talc powders is destroyed, delamination occurs, which is conducive to the formation of some nanostructured composite materials, thereby improving the performance of the material. [0003] Talc powder plays an important role in plastic modification and becomes an indispensable modification additive. In dif...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/08C08K13/06C08K9/02C08K9/04C08K7/00C08K3/34C08K5/134C08K5/526B29C47/92B29C48/92
CPCB29C48/92B29C2948/9259B29C2948/92704C08L23/14C08L2205/02C08L23/0815C08K13/06C08K9/02C08K9/04C08K7/00C08K3/34C08K5/1345C08K5/526
Inventor 陈晓庆侯书征
Owner JILIN HENGHUI NEW MATERIAL LTD
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