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A kind of high-impact pla/pbat composite material and preparation method thereof

A composite material and high-impact technology, which is applied in the field of high-impact PLA/PBAT composite materials and their preparation, can solve the problems of low impact toughness, inability to use structural materials, and small application range, so as to improve compatibility and prepare The effect of low cost and simple preparation process

Active Publication Date: 2021-05-14
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention discloses a high-impact PLA / PBAT composite material and a preparation method thereof, to at least solve the problem that the PLA / PBAT composite material prepared in the prior art cannot be used as a structural material due to its low impact toughness , there are problems such as small application range

Method used

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  • A kind of high-impact pla/pbat composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Polybutylene adipate-terephthalate (PBAT) / glycidyl methacrylate (GMA) / N-vinylpyrrolidone (NVP) / dicumyl peroxide (DCP) were respectively pressed at 100 / The mass ratio of 3 / 0 / 0.3, 100 / 1 / 1 / 0.1, 100 / 2 / 2 / 0.2 and 100 / 3 / 3 / 0.3 is mixed, and the product is named polyadipate-butylene terephthalate in sequence Diol ester No. 0 (A0-PBAT), poly(butylene adipate-terephthalate) No. 1 (A1-PBAT), poly(butylene adipate-terephthalate) No. 2 (A2- PBAT) and polybutylene adipate-terephthalate No. 3 (A3-PBAT), the above products were put into the internal mixer for melt blending, wherein the rotation speed was 80rpm, the mixing temperature was 180°C, and the mixing time 5min.

[0035] And the unmodified polybutylene adipate-terephthalate was named pure polybutylene adipate-terephthalate (pure PBAT).

Embodiment 2

[0037] Put the modified polybutylene adipate-terephthalate No. 2 (A2-PBAT) and polylactic acid into the internal mixer at a ratio of 30 / 70 (w / w) to melt and blend, wherein the speed 80rpm, mixing temperature 180°C, and mixing time 5min, the PLA / PBAT composite material was prepared.

[0038] The prepared PLA / PBAT composite material was subjected to a notched impact test at a temperature of 23°C, and the notched impact test strength was 49.06KJ / M2.

Embodiment 3

[0040] Put the modified polybutylene adipate-terephthalate No. 3 (A3-PBAT) and polylactic acid into the internal mixer at a ratio of 30 / 70 (w / w) for melting and blending, wherein the rotational speed 80rpm, mixing temperature 180°C, and mixing time 5min, the PLA / PBAT composite material was prepared.

[0041] The prepared PLA / PBAT composite material was subjected to a notched impact test at a temperature of 23°C, and its notched impact test strength was 54.49KJ / M2.

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Abstract

The invention discloses a high-impact PLA / PBAT composite material and a preparation method thereof. The high-impact PLA / PBAT composite material is composed of polylactic acid and chemically grafted polybutylene adipate-terephthalate It is made by blending glycol esters, wherein the content of poly(butylene adipate-terephthalate) after chemical graft modification is more than 20%, and the content of poly(butylene adipate-terephthalate) through terephthalate Butanediol ester is chemically grafted and modified, which can improve the compatibility between the two, and realize the toughness improvement of PLA / PBAT composite materials. This preparation method does not require other additives, and has the advantages of simple preparation process and low preparation cost. advantage.

Description

technical field [0001] The invention discloses the technical field of polymer materials, in particular to a high-impact PLA / PBAT composite material and a preparation method thereof. Background technique [0002] With the increasing environmental pollution and energy consumption, environmentally friendly polymer materials have attracted widespread attention from academia and industry. As a thermoplastic aliphatic polyester derived from renewable resources, polylactic acid (PLA) not only has good biodegradability and biocompatibility, but also has excellent mechanical strength and processing properties, so no matter Whether in the field of general plastics or biomedical materials, PLA has shown broad application prospects. [0003] However, due to the very poor toughness of PLA, its application range is greatly limited. At present, in order to improve the toughness of PLA, technicians mainly blend poly(butyleneadipate-co-terephthalate), PBAT and PLA, and use PBAT to improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L51/08C08F283/02C08F220/32
Inventor 赵桂艳王光鑫李华胡跃鑫毕研峰韩向艳
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY