Degradable plastic mulching film based on PBAT and preparation method of degradable plastic mulching film

A technology for degrading plastics and mulches, applied in the field of plastics, can solve the problems of excessive rigidity, unsatisfactory degradable performance, uneven mechanical properties, etc., and achieve the effect of increasing degradability, stable and uniform mechanical properties and degradable properties

Active Publication Date: 2021-09-10
广东永鑫华新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PBAT still has its inherent defects: mainly manifested as relatively large rigidity, poor compatibility with other traditional plastics, and relatively high price, etc.
[0006] However, in the process of blending the above-mentioned components, the difference in performance due to the difference in chemical structure of different components will often lead to the blending phase between the plastic substrates and between ...

Method used

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  • Degradable plastic mulching film based on PBAT and preparation method of degradable plastic mulching film
  • Degradable plastic mulching film based on PBAT and preparation method of degradable plastic mulching film
  • Degradable plastic mulching film based on PBAT and preparation method of degradable plastic mulching film

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A kind of degradable plastic mulching film based on PBAT, it comprises the composition of following mass parts:

[0045]

[0046] The preparation method of the above-mentioned degradable plastic film based on PBAT is:

[0047] S1. Preparation of modified polysiloxane: dissolve 1mmol of hydrogen-containing silicone oil (0.18wt% hydrogen content) and 1.2mmol of polyethylene glycol monomethyl ether in 100ml of xylene, add 0.15 wt% zinc acetate containing hydrogen silicone oil was used as a catalyst, and under the protection of argon, it was heated to reflux for 10 h to obtain a crude product. Then the solvent in the system was distilled off under reduced pressure, and the concentrate was passed through a silica gel column (mobile phase: petroleum ether: dichloromethane = 2:1, v / v), and the product was collected to obtain a modified polysiloxane.

[0048] S2. Blend PBAT and PE according to the above-mentioned parts by mass, add them to the planetary ball mill, and ball ...

Embodiment 2

[0051] A kind of degradable plastic mulching film based on PBAT, it comprises the composition of following mass parts:

[0052]

[0053] The preparation method of the above-mentioned degradable plastic film based on PBAT is:

[0054] S1. Preparation of modified polysiloxane: Dissolve 1mmol of hydrogen-containing silicone oil (0.36wt% hydrogen content) and 1.6mmol of polypropylene glycol monomethyl ether in 100ml of xylene, but add hydrogen-containing 0.25wt% zinc acetate in silicone oil was used as a catalyst, and under the protection of argon, it was heated to reflux for 10 h to obtain a crude product. Then the solvent in the system was distilled off under reduced pressure, and the concentrate was passed through a silica gel column (mobile phase: petroleum ether: dichloromethane = 2:1, v / v), and the product was collected to obtain a modified polysiloxane.

[0055] S2. Blend PBAT and PE according to the above-mentioned parts by mass, add them to the planetary ball mill, an...

Embodiment 3

[0058] A kind of degradable plastic mulching film based on PBAT, it comprises the composition of following mass parts:

[0059]

[0060] The preparation method of the above-mentioned degradable plastic film based on PBAT is:

[0061] S1. Preparation of modified polysiloxane: Dissolve 1mmol of hydrogen-containing silicone oil (0.18wt% hydrogen content) and 1.3mmol of polypropylene glycol monomethyl ether in 100ml of xylene, but add hydrogen-containing 0.20wt% zinc acetate in silicone oil was used as a catalyst, and under the protection of argon, it was heated to reflux for 8 hours to obtain a crude product. Then the solvent in the system was distilled off under reduced pressure, and the concentrate was passed through a silica gel column (mobile phase: petroleum ether: dichloromethane = 2:1, v / v), and the product was collected to obtain a modified polysiloxane.

[0062] S2. Blend PBAT and PE according to the above-mentioned parts by mass, add them to the planetary ball mill,...

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Abstract

The invention discloses a degradable plastic mulching film based on PBAT. The degradable plastic mulching film comprises the following components: PBAT, PE, iron-based montmorillonite and modified polysiloxane. Wherein the modified polysiloxane is a product prepared by carrying out condensation reaction on hydrogen-containing silicone oil and polyalcohol monomethyl ether. The modified polysiloxane can greatly improve the compatibility between the PBAT and the PE and the blending uniformity between the PBAT and the PE and other auxiliaries, so that the composite material has stable and uniform mechanical properties and degradability when being used as a degradable plastic mulching film, and phase separation hardly occurs under extreme weather conditions.

Description

technical field [0001] The invention belongs to the field of plastics, and in particular relates to a PBAT-based degradable plastic mulch film and a preparation method thereof. Background technique [0002] In order to preserve the positive role of plastic mulch in maintaining soil temperature and humidity, increase crop production and income, and solve the pollution of the ecological environment caused by residual mulch, developed countries in the United States and Europe successively started to develop degradable mulch in the 1960s. And realized part of the industrialization. Degradable plastic mulch mainly includes photodegradable plastic mulch and biodegradable plastic mulch. [0003] PBAT is a typical representative of biodegradable plastic mulches. It is a thermoplastic biodegradable flexible material, which is composed of a rigid segment of butylene terephthalate and a flexible segment of butylene adipate. Therefore, in its material properties, it not only has good...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L23/06C08L67/02C08L67/04C08L83/12C08K3/34A01G13/02
CPCC08J5/18A01G13/0275C08J2323/06C08J2467/02C08J2483/12C08J2467/04C08K3/346Y02P20/52Y02A40/28
Inventor 刘攸华阳瑞陈龙藩陈绍军
Owner 广东永鑫华新型材料有限公司
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