Preparation method of composite material for polypropylene modification, and product thereof

A technology of composite materials and polypropylene, which is applied in the field of preparation of composite materials for polypropylene modification, can solve the problems of insignificant performance improvement of polypropylene, poor modification effect of polypropylene, and inability to combine organically, and achieve extreme chemical stability Good, improve processing fluidity, improve the effect of surface gloss

Active Publication Date: 2016-12-21
JIANGXI GUANGYUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding one type of filler often does not improve the performance of polypropylene significantly or is not perfect. When different fillers are added alone, there is often no organic combination between fillers or between fillers and resins, resulting in poor polypropylene modification effect and modified polypropylene performance. The improvement is not obvious

Method used

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  • Preparation method of composite material for polypropylene modification, and product thereof
  • Preparation method of composite material for polypropylene modification, and product thereof
  • Preparation method of composite material for polypropylene modification, and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of preparation method of composite material for polypropylene modification, is characterized in that, comprises the following steps:

[0030] (1) Adjust the 400-600 mesh wollastonite powder with water to form a slurry with a mass concentration of 50%-60%, and add sodium stearate as a dispersant while preparing the slurry, and the addition amount is 2‰ of the dry wollastonite powder mass , to improve the dispersibility and grindability of the slurry.

[0031] (2) Mix 400-600 mesh barium sulfate and 300-400 mesh rutile titanium dioxide with water at a mass ratio of 4:1 to form a composite slurry with a mass concentration of 65%, and add 3% sodium stearate as a dispersant at the same time , Add 2‰ of D-7080 silane coupling agent as a dispersant and surface modifier.

[0032] (3) Feed the titanium dioxide-barium sulfate composite slurry prepared in (2) into the wet vertical stirring mill through a diaphragm pump, the mill speed is 200r / min, and the content of the sl...

Embodiment 2

[0041] A kind of preparation method of composite material for polypropylene modification, is characterized in that, comprises the following steps:

[0042] (3) Adjust the 400-600 mesh wollastonite powder with water into a slurry with a mass concentration of 50%-60%, and add sodium stearate as a dispersant while preparing the slurry, and the addition amount is 3‰ of the wollastonite dry powder mass , to improve the dispersibility and grindability of the slurry.

[0043] (4) Mix 400-600 mesh barium sulfate and 300-400 mesh rutile titanium dioxide with water at a mass ratio of 5:1 to form a composite slurry with a mass concentration of 68%, and add 3% sodium stearate as a dispersant at the same time , Add 2‰ of D-7080 silane coupling agent as a dispersant and surface modifier.

[0044] (3) Feed the titanium dioxide-barium sulfate composite slurry prepared in (2) into the wet vertical stirring mill through a diaphragm pump, the mill speed is 200r / min, and the content of the slurr...

Embodiment 3

[0051] A kind of preparation method of composite material for polypropylene modification, is characterized in that, comprises the following steps:

[0052] (5) Adjust the 400-600 mesh wollastonite powder with water into a slurry with a mass concentration of 50%-60%, and add sodium stearate as a dispersant while preparing the slurry, and the addition amount is 5‰ of the wollastonite dry powder mass , to improve the dispersibility and grindability of the slurry.

[0053] (6) Mix 400-600 mesh barium sulfate and 300-400 mesh rutile titanium dioxide with water at a mass ratio of 6:1 to form a composite slurry with a mass concentration of 70%, and add 3% sodium stearate as a dispersant at the same time , Add 2‰ of D-7080 silane coupling agent as a dispersant and surface modifier.

[0054] (3) Feed the titanium dioxide-barium sulfate composite slurry prepared in (2) into the wet vertical stirring mill through a diaphragm pump, the mill speed is 250r / min, and the content of the slurr...

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Abstract

The invention provides a preparation method of a composite material for polypropylene modification. The preparation method comprises: blending wollastonite powder by using water to obtain a 50-60% slurry, and adding sodium stearate; preparing a 65-70% composite slurry from barium sulfate and titanium white powder according to a mass ratio of (4-6):1 by using water, and adding sodium stearate and a silane coupling agent; carrying out wet grinding on the prepared titanium white powder-barium sulfate composite slurry to 3000-4000 mesh; adding the prepared wollastonite slurry to the prepared titanium white powder-barium sulfate composite slurry according to a mass ratio of the titanium white powder-barium sulfate to the wollastonite of (10-12):1, and adding a silane coupling agent to coat; drying the composite slurry to obtain composite material dry powder; and beating and disaggregating the composite material dry powder to achieve the dispersed state, carrying out a cyclone grading treatment, and collecting the 2500-3000 mesh powder. According to the present invention, the composite material product with characteristics of high weather resistance, high gloss and high chemical stability can be obtained.

Description

【Technical field】 [0001] The invention relates to the field of modified fillers, in particular to a preparation method of a composite material for polypropylene modification and a product thereof. 【Background technique】 [0002] Polypropylene (PP) is one of the five general-purpose plastics, but the biggest disadvantage of polypropylene is its brittleness, low impact strength, especially poor low-temperature impact performance, low dimensional accuracy, insufficient rigidity, and poor weather resistance, which limit its application. Scope and feature development. In order to improve various properties of polypropylene, it needs to be modified. At present, the modification methods used for polypropylene are mainly chemical modification and physical modification. Chemical modification mainly changes the molecular structure of polypropylene through copolymerization, grafting, etc. to change its properties. The molecular aggregation structure of polypropylene can be changed by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K9/10C08K9/06C08K3/34C08K3/30C08K3/22
CPCC08K3/22C08K3/30C08K3/34C08K9/06C08K9/10C08K2003/2241C08K2003/3045C08K2201/016C08L23/12
Inventor 张晓明彭鹤松曾伟周峰艾青
Owner JIANGXI GUANGYUAN CHEM
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