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A kind of three-block polypropylene toughening modified compatibilizer and its preparation method and application

A toughening modification and compatibilizer technology, applied in the field of new compatibilizers, can solve problems such as poor compatibility, improve performance, facilitate implementation and promotion, and improve compatibility

Active Publication Date: 2021-07-30
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to EPDM rubber, materials such as SBS, SEBS, SIS, and EVA are also good tougheners for polypropylene resins. However, there are few reports on related dynamic vulcanized elastomers. The molecular compatibility of propylene is poor. CN1247682C reports a method for preparing elastomers by dynamic vulcanization of SIS, SBS or SEPS and PP. In this method, if the compatibility of elastomer molecules and polypropylene molecules is considered, adding Sexual additives will further improve material properties

Method used

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  • A kind of three-block polypropylene toughening modified compatibilizer and its preparation method and application
  • A kind of three-block polypropylene toughening modified compatibilizer and its preparation method and application
  • A kind of three-block polypropylene toughening modified compatibilizer and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Preparation of maleic anhydride grafted polypropylene

[0065] 1000g of polypropylene 1102K, 29g of maleic anhydride, and 5g of dicumyl peroxide are added to a high-speed mixer and mixed evenly, then blended with a ZSK twin-screw extruder to melt and carry out grafting reaction, each section of the extruder The temperature is 175°C, 180°C, 185°C, 185°C, and 180°C in sequence; the product of the grafting reaction is dissolved in hot xylene, and methanol is added to the reaction product after cooling, and crude maleic anhydride grafted Then, the crude maleic anhydride grafted polypropylene was rinsed with ethanol and dried to obtain purified maleic anhydride grafted polypropylene; the grafting rate was 1.7% after testing.

[0066] (2) Preparation of maleic anhydride grafted SBS

[0067] Add 1000g of naphthenic oil KN4010 and 1000g of SBS elastomer into a beaker, stir evenly at room temperature, and let it stand for 24 hours to obtain oil-filled SBS elastomer;

[006...

Embodiment 2

[0072] (1) Preparation of maleic anhydride grafted polypropylene

[0073] 1000g of polypropylene 1102K, 39g of maleic anhydride and 4g of dicumyl hydroperoxide were added to a high-speed mixer and mixed evenly, then blended with a ZSK twin-screw extruder for melting and grafting reaction, each extruder The temperature of the section is 175°C, 180°C, 185°C, 185°C, and 180°C in sequence; the product of the grafting reaction is dissolved in hot xylene, and methanol is added to the reaction product after cooling, and crude maleate is obtained after filtration. The acid anhydride grafted polypropylene was washed with ethanol and dried to obtain the purified maleic anhydride grafted polypropylene; the grafting rate was 2.2% after testing.

[0074] (2) Preparation of maleic anhydride grafted SBS

[0075] Add 900g of naphthenic oil KN4010 and 1100g of SBS elastomer into a beaker, stir evenly at room temperature, and let it stand for 18 hours to obtain oil-filled SBS elastomer;

[00...

Embodiment 3

[0080] (1) Preparation of maleic anhydride grafted polypropylene

[0081] Add 1100N 1000g of polypropylene, 29g of maleic anhydride, and 3g of dicumyl peroxide into a high-speed mixer and mix evenly, then blend with a ZSK twin-screw extruder for melting and grafting reaction, each section of the extruder The temperature is 175°C, 180°C, 185°C, 185°C, 180°C in sequence; the product of the grafting reaction is dissolved in hot xylene, after cooling, methanol is added to the reaction product, and crude maleic anhydride is obtained after filtration After grafting polypropylene, the crude maleic anhydride grafted polypropylene was rinsed with ethanol and dried to obtain purified maleic anhydride grafted polypropylene; the grafting rate was 2.3% after testing.

[0082] (2) Preparation of maleic anhydride grafted SEBS

[0083] Take white oil 10#1100g, add 900g of SEBS elastomer into the beaker, stir evenly at room temperature, let it stand for 30h, and obtain oil-filled SEBS elastom...

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Abstract

The invention discloses a three-block polypropylene toughening and modifying compatibilizer, which is obtained by esterifying raw materials comprising the following components in weight percentages in a solvent: carboxylic anhydride grafted polypropylene 47.5%-49.75% , 47.5%-49.75% of carboxylic anhydride grafted toughened elastomer, 0.5%-5% of diamine derivatives; wherein, the diamine derivatives are ethylenediamine or ethylenediamine derivatives; the invention also discloses The preparation method and application of the above-mentioned three-block polypropylene toughened and modified compatibilizer are disclosed. The toughened and modified compatibilizer of the invention improves the compatibility between the polypropylene resin and the corresponding elastomer, and improves the performance of the polypropylene toughened elastomer material.

Description

technical field [0001] The invention belongs to the technical field of toughened and modified compatibilizers, in particular to a novel compatibilizer for preparing polypropylene toughened and modified composite materials. Background technique [0002] Polypropylene resin has the advantages of good mechanical properties, low density, non-toxicity, corrosion resistance and easy processing and molding, and is widely used in building materials, home appliances, automobiles, pipes, daily necessities and other fields. However, in some fields that require special requirements, such as high toughness, high rigidity, electrical conductivity, etc., the performance of general-purpose polypropylene resin is difficult to meet the requirements, and the polypropylene resin needs to be modified accordingly. In the field of high-toughness products, such as automobile bumpers, it is necessary to add toughening agents to the extrusion of polypropylene base materials to improve toughness. In t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08L23/12C08L87/00C08K5/14C08G81/02
CPCC08G81/021C08L53/02C08L53/025C08L23/12C08L87/005C08K5/14
Inventor 方伟罗春桃孟永智田广华申宏鹏赵春梅
Owner CHNA ENERGY INVESTMENT CORP LTD
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