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Composition containing pbat and its preparation method and pbat fully biodegradable mulching film

A technology of composition and content, applied in the direction of plant protection cover, etc., can solve the problem of low opening of mulch film, and achieve the effects of reducing the coefficient of dynamic and static friction, improving opening and improving tensile strength

Active Publication Date: 2015-11-18
ANHUI JUMEI BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect of low opening of the mulch film produced by the composition containing PBAT provided by the prior art, to provide a composition containing PBAT and its preparation method and a PBAT whole organism with high opening. Degradable mulch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The specific operation process of this embodiment is as follows:

[0030] The PBAT of 57 parts by weight, the modified talcum powder of 40 parts by weight are dried at 100 DEG C for 2h;

[0031] Mix the dried PBAT and modified talcum powder in a high-speed mixer for 10 minutes, then add 0.4 parts by weight of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 2 - 0.2 parts by weight of hydroxy-4-n-octyloxybenzophenone, 0.4 parts by weight of light stabilizer, 0.6 parts by weight of silicon dioxide, 0.9 parts by weight of zinc stearate, 0.5 parts by weight of polyethylene wax, fully mixed uniformly;

[0032] Put the uniformly mixed material into a twin-screw extruder for melt blending, stranding, and pelletizing to obtain granular mixed resin;

[0033] Dry the mixed granular resin granulated in the previous step at 60°C for 4 hours;

[0034] Put the dried mixed resin into a single-screw extruder, blow molding to produce PBAT biodegradable...

Embodiment 2

[0036] The specific operation process of this embodiment is as follows:

[0037] Dry 62 parts by weight of PBAT and 35 parts by weight of modified talcum powder at 100°C for 2 hours;

[0038] The dried PBAT and modified talcum powder were mixed in a high-speed mixer for 10 minutes, and then 0.1 parts by weight of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 2 -0.5 parts by weight of hydroxy-4-n-octyloxybenzophenone, 0.8 parts by weight of light stabilizer, SR1000.1 parts by weight of Ciba, 0.9 parts by weight of zinc stearate, 0.6 parts by weight of polyethylene wax, fully well mixed;

[0039] Put the uniformly mixed material into a twin-screw extruder for melt blending, stranding, and pelletizing to obtain granular mixed resin;

[0040] Dry the mixed granular resin granulated in the previous step at 60°C for 4 hours;

[0041] Put the dried mixed resin into a single-screw extruder, blow molding to produce PBAT biodegradable mulch film A2...

Embodiment 3

[0043] The specific operation process of this embodiment is as follows:

[0044] Dry 68 parts by weight of PBAT and 29 parts by weight of modified talcum powder at 100°C for 2 hours;

[0045] The dried PBAT and modified talcum powder were mixed in a high-speed mixer for 10 minutes, and then 0.9 parts by weight of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, 2 - 0.2 parts by weight of hydroxy-4-n-octyloxybenzophenone, 0.1 parts by weight of light stabilizer, 0.8 parts by weight of SR1000 of Ciba, 0.9 parts by weight of zinc stearate, 0.1 parts by weight of dispersant, fully mixed Uniform;

[0046] Put the uniformly mixed material into a twin-screw extruder for melt blending, stranding, and pelletizing to obtain granular mixed resin;

[0047] Dry the mixed granular resin granulated in the previous step at 60°C for 4 hours;

[0048] Put the dried mixed resin into a single-screw extruder, blow molding to produce PBAT biodegradable mulch film...

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Abstract

The invention discloses a composition containing PBAT (poly(butylene adipate-co-terephthalate)), a preparation method thereof and a PBAT full biodegradable mulching film. The composition contains the following components in percentage by weight: 55-90wt% of PBAT, 5-40wt% of modified talcum powder, 0.1-1wt% of antioxidant, 0.1-1wt% of ultraviolet absorption agent, 0.05-1wt% of light stabilizer, 0.1-1wt% of anti-sticking agent, 0.1-1wt% of lubricant and 0.05-1wt% of dispersing agent. According to the invention, the modified high-transmittancy talcum powder and silicon dioxide and / or SR100 from Ciba Company are added in the PBAT, so that the antiblocking property of the PBAT mulching film prepared from the PBAT composition is enhanced.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a composition containing PBAT, a preparation method thereof, and a fully biodegradable PBAT film. Background technique [0002] Environmental protection has become a hot topic of concern to all mankind. At present, various countries are actively developing sustainable environmental protection products. In the film industry, fully biodegradable films have been valued by Western developed countries as early as the last century, and are expected to solve the current problems. White pollution problem. [0003] my country is a large agricultural country, and the amount of plastic film used every year is more than 1 million tons, and the area covered by plastic film is more than 200 million mu. The traditional mulch film is made of petroleum-based films such as PE and PVC. It is difficult to recycle this kind of mulch film after use, and it is difficult to decompose if it is discarded...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K13/06C08K9/04C08K3/34C08K5/134C08K5/526C08K5/132C08K5/098B29B9/06A01G13/02
Inventor 王凤洋马腾韩路坤
Owner ANHUI JUMEI BIOLOGICAL TECH
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