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Polylactic acid-organic soapstone composite material and preparation method thereof

A technology of organic saponite and composite materials, which is applied in the field of polylactic acid-organic saponite composite materials and its preparation, can solve the problem of the stability decline of polylactic acid/montmorillonite composite materials, harsh and complex preparation process conditions, and the Eliminate the problems of expensive ester raw materials, etc., and achieve the effects of shortening the preparation cycle, simple process, and improving mechanical properties and heat resistance

Inactive Publication Date: 2011-06-15
新疆康润洁环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lactide raw material is expensive, and the preparation process conditions are harsh and complicated
In 2003, PaulMA found that when the addition of MMT-Na (i.e. sodium-based montmorillonite) increased, the stability of polylactic acid / montmorillonite composites decreased (PaulMA, AlexandraM, DegeeP, etal.Polymer, 2003, 44: 443 ~450)

Method used

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  • Polylactic acid-organic soapstone composite material and preparation method thereof
  • Polylactic acid-organic soapstone composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: Stir 100 grams of raw material soapstone in 1000 grams of deionized water to form a stable suspension with a concentration of 10% by mass; prepare 0.141 moles of organic cationic salt cetyltrimethylammonium chloride in deionized water into a 2% mass percent concentration solution. Stir the soapstone suspension at 90°C for 30 minutes at a stirring speed of 1000 rpm, then add the above-mentioned organic cation salt cetyltrimethylammonium chloride solution to the above-mentioned soapstone suspension, and react for 4 hours, Then filter. And the filtrate is washed several times with deionized water, and is detected by 0.1 mol / liter silver nitrate solution until there is no halogen ion in the washing liquid; the organic saponite after washing is dried and ground to obtain a particle size of 60 microns to 74 microns of organic saponite.

[0026] 100 parts by weight of polylactic acid resin, 1 part by weight of organic soapstone, 5 parts by weight of plasticizer...

Embodiment 2

[0027] Embodiment 2: 100 grams of raw material soapstone are stirred in 2000 grams of deionized water to form a stable suspension with a concentration of 5% by mass; 0.1194 moles of organic cationic salt dioctadecyldimethylammonium chloride are dissolved in deionized water Prepared as a 5% mass percent concentration solution. Stir the soapstone suspension at 80°C for 15 minutes at a stirring speed of 900 rpm, then add the above-mentioned organic cation salt dioctadecyldimethylammonium chloride solution to the above-mentioned soapstone suspension and react for 3 hours , then filter. And the filtrate is washed several times with deionized water, and is detected by 0.1 mol / liter silver nitrate solution until there is no halogen ion in the washing liquid; the organic saponite after washing is dried and ground to obtain a particle size of 60 microns to 74 microns of organic saponite.

[0028] 100 parts by weight of polylactic acid resin, 5 parts by weight of organic soapstone, 10...

Embodiment 3

[0029] Embodiment 3: 100 grams of raw material soapstone are stirred in 3500 grams of deionized water to form a stable suspension with a concentration of 2.86% by mass; 0.1 mole of organic cationic salt dioctadecyldimethylammonium chloride is mixed with octadecane 0.1 mole of trimethylammonium chloride was prepared in deionized water to prepare a solution with a concentration of 6% by mass. Stir the soapstone suspension at 70°C for 10 minutes at a stirring speed of 400 rpm, then mix the above organic cation salt dioctadecyldimethylammonium chloride and octadecyltrimethylammonium chloride The solution was added to the above soapstone suspension, reacted for 2 hours, and then filtered. And the filtrate is washed several times with deionized water, and is detected by 0.1 mol / liter silver nitrate solution until there is no halogen ion in the washing liquid; the organic saponite after washing is dried and ground to obtain a particle size of 60 microns to 74 microns of organic sapo...

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Abstract

The invention relates to the technical field of composite material of polylactic acid and organic soapstone, particularly to a composite material of polylactic acid and organic soapstone, preparation method and product thereof. The composite material includes polylactic resin, organic soapstone, plasticizer, compatibility agent and lubricant. The preparation method of the composite material includes following steps: firstly fully mixing the polylactic resin, organic soapstone, plasticizer, compatibility agent, lubricant in a high-speed heating mixing machine, then uniformly mixing in a low-speed cooling mixing machine, and finally directly extruding the polylactic acidand organic soapstone composite material in a double screw extruder. The product is made of the composite material of polylactic acid and organic soapstone. The composite material and the product thereof have greater mechanical properties and heat resistance like impact strength and tensile strength than polylactic base material, as well as wide appliaction area, thereby expanding the application area. The preparation method has shorter period and simple process.

Description

technical field [0001] The invention relates to the technical field of composite materials composed of polylactic acid and organic saponite, and relates to a polylactic acid-organic saponite composite material, a preparation method and a product thereof. Background technique [0002] With the development of science and society, people pay more and more attention to environmental and resource issues and become global issues. Traditional plastic materials using petroleum as raw materials are widely used, but it is difficult to recycle them after use. A large amount of plastic waste has caused the current serious "white pollution" problem due to its non-degradability. The emergence of degradable materials, especially the renewability of raw materials for degradable materials, provides an effective means to solve this problem. As a class of environmentally friendly functional materials with excellent performance, polylactic acid has excellent biocompatibility and degradation pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08K13/06C08K9/04C08K3/34C08J5/00
Inventor 甄卫军李志娟庞桂林刘月娥袁龙飞马小惠
Owner 新疆康润洁环保科技股份有限公司