Full-biodegradable plastic composite modified material suitable for film bag and preparation method of full-biodegradable plastic composite modified material

A technology for degrading plastic and compound modification, applied in the field of fully biodegradable plastic compound modification materials and their preparation, can solve the problems of low elongation at break, research on printing performance, and high price of PBAT, and achieve improved printing performance and screw filling. The effect of high degree and excellent mechanical properties

Active Publication Date: 2022-01-21
佛山粤晟达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility between PBAT and PLA is not good, and the dispersion of fillers is not enough, which will affect the final performance of the blended modified material after film formation
In addition, the price of PBAT is high, and the processing performance of PLA is not good. In the blending process, how to start with the formula and processing technology to improve the interfacial compatibility of the two materials and the dispersibility of fillers, and to improve the film bag products after processing Printing performance and transparency will be the main research direction of the present invention
[0004] CN104419305A provides a formulation covering a variety of biocopolyesters and possible use of compatibilizers and inorganic fillers, but does not mention how to apply to film bags Improve the stiffness and printability of modified materials
CN103013070B provides a toughened modified material with PLA as the main component, but the extrusion preparation technology is not optimized, and the elongation at break of the product with PLA as the main component is low
CN103627153A provides a formula with dicumyl peroxide and maleic anhydride as compatibilizers, but the component ratio of PBAT / PLA is not optimized, and the elongation at break is low
Furthermore, none of these techniques investigated the printability of the samples, which is reflected by the surface tension of the material

Method used

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  • Full-biodegradable plastic composite modified material suitable for film bag and preparation method of full-biodegradable plastic composite modified material
  • Full-biodegradable plastic composite modified material suitable for film bag and preparation method of full-biodegradable plastic composite modified material

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Embodiment 1

[0052] The fully biodegradable plastic composite modified material suitable for film bags provided in this embodiment is mainly made of the following raw materials in mass percentage:

[0053] Poly(butylene adipate / terephthalate) (PBAT): 25%;

[0054] Polybutylene succinate (PBS): 25%

[0055] Polylactic acid (PLA): 15%;

[0056] Calcium carbonate (MD): 30%;

[0057] Auxiliary: 5%;

[0058] The auxiliary agent is maleic anhydride, 2-imidazolidinone and styrene-glycidyl acrylate copolymer (ADR), and the mass ratio of the three is 0.5:0.5:1.

[0059] Its preparation method is as follows:

[0060] (1) Select polybutylene adipate / terephthalate (PBAT), polylactic acid (PLA), polybutylene succinate (PBS), calcium carbonate (MD) and the total mass of additives 80% additives, pre-mixed in high speed mixer (1000rpm) for 5 minutes;

[0061] (2) Add the remaining additives to the low-speed mixer (300rpm) for 4 minutes of secondary premixing;

[0062] (3) Put the homogeneously mixe...

Embodiment 2

[0065] The fully biodegradable plastic composite modified material suitable for film bags provided in this embodiment is mainly made of the following raw materials in mass percentage:

[0066] Poly(butylene adipate / terephthalate) (PBAT): 25%;

[0067] Polybutylene succinate (PBS): 30%

[0068] Polylactic acid (PLA): 15%;

[0069] Calcium carbonate (MD): 25%;

[0070] Auxiliary: 5%;

[0071] The auxiliary agent is maleic anhydride, 2-imidazolidinone and styrene-glycidyl acrylate copolymer (ADR), and the mass ratio of the three is 0.5:0.5:1.

[0072] Its preparation method can refer to embodiment 1.

Embodiment 3

[0074] The fully biodegradable plastic composite modified material suitable for film bags provided in this embodiment is mainly made of the following raw materials in mass percentage:

[0075] Poly(butylene adipate / terephthalate) (PBAT): 30%;

[0076] Polybutylene succinate (PBS): 25%

[0077] Polylactic acid (PLA): 15%;

[0078] Calcium carbonate (MD): 25%;

[0079] Auxiliary: 5%;

[0080] The auxiliary agent is maleic anhydride, 2-imidazolidinone and styrene-glycidyl acrylate copolymer (ADR), and the mass ratio of the three is 0.5:0.5:1.

[0081] Its preparation method can refer to embodiment 1.

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Abstract

The invention discloses a full-biodegradable plastic composite modified material suitable for a film bag. The full-biodegradable plastic composite modified material is mainly prepared from the following raw materials in percentage by mass: 25-30% of poly (butylene adipate-co-terephthalate); 25-30% of poly (butylene succinate); 10-15% of polylactic acid; 25-30% of calcium carbonate; and 4-6% of an auxiliary agent. The auxiliary agent is maleic anhydride, 2-imidazolidone and a copolymer of styrene and glycidyl acrylate. The composite modified material has excellent mechanical properties, high tensile strength and elongation at break, and good transparency, stiffness and printability. The invention further discloses a preparation method of the composite modified material. The method can prevent the degradable resin from being coked in the processing process, and the quality of the full-biodegradable plastic composite modified material is improved.

Description

technical field [0001] The invention belongs to the technical field of biodegradable plastics, and in particular relates to a fully biodegradable plastic composite modified material suitable for film bags and a preparation method thereof. Background technique [0002] Plastic is a basic material widely used in production and life. Due to its lightness, durability, controllable performance, and relatively low production costs, its products are used in various fields of the national economy. However, due to the non-degradability of traditional plastics, the continuous accumulation of waste plastics in recent years has caused increasingly serious environmental pollution and ecological crisis, which has attracted widespread attention at home and abroad. At present, countries around the world have successively issued relevant laws and regulations to control waste plastic pollution. my country will also completely ban and restrict the production, sale and use of some plastic produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L25/14C08K3/26C08K5/1539C08K5/3445C08J5/18B29C69/00B29C48/625
CPCC08J5/18B29C69/001B29C48/625B29C48/0022C08J2367/02C08J2467/04C08J2467/02C08K2003/265C08K2201/003C08K5/1539C08K5/3445Y02W90/10
Inventor 张天龙麦晓霞
Owner 佛山粤晟达新材料有限公司
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