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Toughening modification composite material and preparation method thereof

A composite material and a toughening modification technology, applied in the field of toughening modified composite materials and their preparation, can solve problems such as poor tensile strength, improve tensile strength, simple and reliable preparation method, and good compatibility Effect

Inactive Publication Date: 2018-03-06
SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the existing polylactic acid composite material has poor tensile strength, and provide a kind of toughened modified composite material and its preparation method; Composite, and evenly disperse the nano glass fiber in the polylactic acid system, the obtained composite material has excellent tensile strength performance, which is beneficial to the application of polylactic acid in more fields

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 12 parts of nano glass fibers are treated with 2 parts of methacryloxysilane;

[0032] (2) The nano-glass fibers treated with the coupling agent are coated with 4 parts of methyl orthosilicate and 4 parts of acetyl tributyl citrate;

[0033] (3) Mix the coated nano-glass fibers with 45 parts of polylactic acid with a degree of polymerization of 1000, and then extrude them in a parallel electric field with an electric field strength of 2.5kv / m and a constant electric field direction to obtain a mixture;

[0034] (4) Mix the mixture obtained in step 3 with 12 parts of polyurethane rubber with a degree of polymerization of 280, 18 parts of polyethylene, and 4 parts of methacrylic acid, and then extrude to obtain a toughened modified composite material.

Embodiment 2

[0036] (1) 6 parts of nano glass fibers are treated with 1 part of methacryloxysilane;

[0037] (2) The nano-glass fibers treated with the coupling agent are coated with 2.5 parts of methyl orthosilicate and 2.5 parts of acetyl tributyl citrate;

[0038] (3) Mix the coated nano-glass fibers with 40 parts of polylactic acid with a degree of polymerization of 800 and extrude them in an electric field with an electric field strength of 3.2 kv / m to obtain a mixture;

[0039] (4) Mix the mixture obtained in step 3 with 10 parts of polyurethane rubber with a polymerization degree of 220, 15 parts of polyethylene, and 3 parts of methacrylic acid, and then extrude to obtain a toughened modified composite material.

Embodiment 3

[0041] (1) 15 parts of nano glass fibers are treated with 3 parts of methacryloxysilane;

[0042] (2) Coating the nano-glass fiber treated with the coupling agent with 5 parts of methyl orthosilicate and 5 parts of acetyl tributyl citrate;

[0043] (3) Mix the coated nano-glass fibers with 50 parts of polylactic acid with a degree of polymerization of 1200 and extrude them in a parallel electric field with an electric field strength of 1.5kv / m invariant to obtain a mixture. ;

[0044] (4) Mix the mixture obtained in step 3 with 15 parts of polyurethane rubber with a degree of polymerization of 340, 20 parts of polyethylene and 5 parts of methacrylic acid, and then extrude to obtain a toughened and modified composite material.

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PUM

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Abstract

The invention discloses a toughened modified composite material and a preparation method thereof, which comprises the following raw materials in parts by weight: 6-15 parts of nano glass fiber, 5-10 parts of modifier, and 15-20 parts of polyethylene , 10-15 parts of polyurethane rubber, 40-50 parts of polylactic acid, 1-3 parts of coupling agent, 3-5 parts of crosslinking agent; Lactic acid is compounded, and the nano glass fiber is evenly dispersed in the polylactic acid system, and the obtained composite material has excellent tensile strength performance, which is beneficial to the application of polylactic acid in more fields.

Description

technical field [0001] The invention relates to the field of modified materials, in particular to a toughened modified composite material and a preparation method thereof. Background technique [0002] Polylactic acid (PLA) is a new type of biodegradable material made from starch raw materials proposed by renewable plant resources such as corn. Starch raw materials are made into lactic acid through a fermentation process, and then converted into polylactic acid through chemical synthesis. It has good biodegradability and can be completely degraded by microorganisms in nature after use, and finally generates carbon dioxide and water, which does not pollute the environment, which is very beneficial to protect the environment and is recognized as an environmentally friendly material. Polylactic acid materials have many advantages such as good mechanical properties and physical properties, good compatibility, and breathability, and are widely used in various fields of life and ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L75/04C08L23/06C08K9/06C08K7/14C08K9/10C08K5/09
CPCC08L67/04C08K2201/003C08K2201/011C08K2201/016C08L2205/03C08L75/04C08L23/06C08K9/06C08K7/14C08K9/10C08K5/09
Inventor 舒春柳
Owner SICHUAN LIZHI JIUCHUANG INTPROP OPERATION CO LTD