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A preparation method of in-situ reaction compatibilization polypropylene/attapulgite composite material

A technology of attapulgite and in-situ reaction, which is applied in the field of preparation of in-situ reaction compatibilized polypropylene/attapulgite composite materials, which can solve the problems of harmfulness to human body, increased process steps, and strong odor of polar monomers, etc.

Active Publication Date: 2020-10-30
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different grades of the carrier resin and the modified resin matrix of the commercially available grafted compatibilizer, this method has a great influence on the design and performance of the material, and it often needs to be prepared in advance, which increases the process steps, and During the preparation of the compatibilizer, most polar monomers have a strong odor and are harmful to the human body

Method used

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  • A preparation method of in-situ reaction compatibilization polypropylene/attapulgite composite material
  • A preparation method of in-situ reaction compatibilization polypropylene/attapulgite composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: Fully mix 50g of attapulgite with 250g of anhydrous ethanol / water mixed solvent with a mass ratio of 9:1 to make a suspension, then add 10g of chloropropyltriethoxysilane and 0.05g of dibutyltin dilaurate , stir evenly at room temperature, then heat up to reflux for 3 hours, centrifuge, wash and dry to obtain chloropropyl-modified attapulgite;

[0021] Step 2: Add 50g of chloropropyl-modified attapulgite to 250g of dioxane again to disperse evenly, add 4.5g of tert-butanol peroxide and 0.08g of ferric chloride at the same time, react at room temperature for 5h, after solid-liquid separation Washing, vacuum drying, and pulverization to obtain attapulgite modified by peroxy groups;

[0022] Step 3: 2500g polypropylene, 50g peroxy group modified attapulgite, 2.5g liquid paraffin, 8g maleic anhydride, 2.5g antioxidant (antioxidant 1010 and antioxidant 168, ratio 1:1) Mix evenly in a mixer, melt extrude and granulate at 200° C. to obtain an in-situ reaction compatib...

Embodiment 2

[0024] Step 1: Fully mix 50g of attapulgite with 500g of ethylene glycol / water mixed solvent with a mass ratio of 8:1 to make a suspension, then add 20g of chloropropyltriethoxysilane and 0.1g of dibutyltin dilaurate , stir evenly at room temperature, then heat up to reflux for 3 hours, centrifuge, wash and dry to obtain chloropropyl-modified attapulgite;

[0025] Step 2: Add 50g of chloropropyl-modified attapulgite to 500g of dioxane to disperse evenly, add 9g of tert-butyl hydroperoxide and 0.2g of ferric chloride at the same time, react at room temperature for 8h, after solid-liquid separation Washing, vacuum drying, and pulverization to obtain attapulgite modified by peroxy groups;

[0026] Step 3: 5000g polypropylene, 50g peroxy group modified attapulgite, 5g silicone oil, 15g glycidyl methacrylate, 5g antioxidant (antioxidant 1010 and antioxidant 168, ratio 1:1) Mix evenly in a mixer, melt extrude and granulate at 210°C to obtain an in-situ reaction compatibilized polyp...

Embodiment 3

[0029] Step 1: Fully mix 50g of attapulgite with 250g of toluene / water mixed solvent with a mass ratio of 8:1 to make a suspension, then add 15g of chloropropyltrimethoxysilane and 0.03g of dioctyltin dilaurate, at room temperature After stirring evenly, heat up to reflux for 5 hours, centrifuge and wash and dry to obtain chloropropyl-modified attapulgite;

[0030] Step 2: Add 50g of chloropropyl-modified attapulgite to 250g of chloroform to disperse evenly, add 6.5g of tert-butanol peroxide and 0.15g of ferric chloride at the same time, react at room temperature for 8h, and wash after solid-liquid separation , pulverized after vacuum drying to obtain attapulgite modified by peroxy groups;

[0031] Step 3: Mix 2500g polypropylene, 50g peroxy group modified attapulgite, 6g PE wax, 8g styrene, 2.5g antioxidant (antioxidant 1010 and antioxidant 168, ratio 1:1.5) The mixture is evenly mixed in the machine, and the in-situ reaction compatibilization polypropylene / attapulgite compo...

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Abstract

The invention belongs to the technical field of organic-inorganic compound materials, and particularly relates to a method for preparing a polypropylene / attapulgite compound material by in-situ reactive compatibilization. The method comprises the following steps: firstly, preparing modified attapulgite carrying a peroxide group by adopting a surface chemical modification method; uniformly mixing the modified attapulgite, polypropylene, grafted monomer and antioxidant, carrying out melt extrusion granulating; and preparing the polypropylene / attapulgite compound material by in-situ reactive compatibilization. In the melt blending process, an initiating function is given to the attapulgite by chemical modification, and graft polypropylene is formed by in-situ initiated grafting reaction to serve as a compatibilizer, so that the step of preparing graft polypropylene is reduced, and the process flow is simplified; and the interfacial strength between polypropylene and attapulgite can be further enhanced by the in-situ initiated grafting reaction, and the dispersibility of attapulgite and the compatibility between attapulgite and resin matrix can be improved.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic composite materials, in particular to a preparation method of an in-situ reaction compatibilized polypropylene / attapulgite composite material. Background technique [0002] Among general-purpose thermoplastics, polypropylene has the highest mechanical properties and heat resistance, and has the characteristics of low density, low cost, good chemical stability, easy processing and recyclability, and has been widely used in daily life. However, in engineering fields such as the automobile industry and the construction industry, the mechanical properties of polypropylene cannot meet the requirements. Therefore, the modified polypropylene with excellent mechanical properties obtained by copolymerization, blending and filling has been a hot research topic in recent years. [0003] The surface polarity of attapulgite is high, and the compatibility is poor when blended with non-polar polymers s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/02C08F222/06C08F2/44C08K9/06C08K9/04C08K3/34C08K5/134C08K5/526
CPCC08F2/44C08F255/02C08K3/346C08K5/1345C08K5/526C08K9/04C08K9/06C08F222/06
Inventor 杨海存刘昊天贾天飞蔡子楠马文中龚方红
Owner CHANGZHOU UNIV
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