Full biodegrade mulch master batch as well as preparation method and application thereof

A degradable mulch film and all-biological technology, applied in the field of plastic masterbatch manufacturing, to achieve the effect of improving mechanical properties, increasing compatibility, and uniform dispersion

Inactive Publication Date: 2014-04-30
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to achieve the above object, the inventors of the present invention have carried out a lot of in-depth and meticulous research work, and found that by adding a certain amount of nano-scale fully biodegradable plastic film masterbatch in the plastic film production process, and supplemented by corresponding processing technology, it can At the same time solve the above problems existing in the existing fully biodegradable mulch

Method used

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  • Full biodegrade mulch master batch as well as preparation method and application thereof
  • Full biodegrade mulch master batch as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Implementation example 1 The fully biodegradable mulch film transparent masterbatch produced by the present invention

[0027] The masterbatch of the present embodiment is made up of following weight percentage composition:

[0028] PBAT 63%,

[0029] Modified Nano Silica 30%,

[0030] EBS 4%,

[0031] Liquid paraffin 3%,

[0032] Preparation process: Mix in a high-speed mixer for 30 minutes at a speed of 700-1000r / min; put the mixture in a twin-screw extruder with a length-to-diameter ratio of 1:48 and granulate to obtain a transparent fully biodegradable film masterbatch.

Embodiment 2

[0033] Implementation example 2 The fully biodegradable mulch film transparent masterbatch produced by the present invention

[0034] PBAT 75%,

[0035] Modified Nano Silica 15%,

[0036] Erucamide 5%,

[0037] Liquid paraffin 5%,

[0038] The preparation process is the same as the preparation method described in Example 1.

Embodiment 3

[0039] Implementation example 3 The black masterbatch of fully biodegradable plastic film of the present invention

[0040] PBAT 75%,

[0041] Modified Nano Silica 10%,

[0042] EBS 5%,

[0043] Polymer wax 5%,

[0044] Carbon black 5%

[0045] The preparation process is the same as the preparation method described in Example 1.

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Abstract

The invention discloses a full biodegrade mulch master batch which comprises the following components in percentage by weight: 70-80% of PBAT (Poly Butyleneadipate-co-Terephthalate), 10-30% of modified nano-silica, 4-7% of dispersing agent, 3-6% of lubrication machining additive and 0-5% of color powder. The invention further discloses a preparation method and an application of the master batch. A mulch product using the master batch has the following mechanical properties: the longitudinal tensile strength is more than or equal to 23MPa, the transverse tensile strength is more than or equal to 21MPa, the longitudinal elongation at break is more than 205%, the transverse elongation at break is more than 322%, and the right angle tear strengths in the longitudinal direction and the transverse direction are both more than 120N/mm.

Description

(1) Field of invention [0001] The invention relates to a fully biodegradable mulch masterbatch, a preparation method and application thereof, and belongs to the technical field of plastic masterbatch manufacturing. (2) Technical background [0002] Because agricultural mulch can effectively control soil temperature and humidity, reduce water and nutrient loss, prevent weeds from growing, and create a favorable ecological environment for crop growth, it is one of the effective ways to increase the production of food and economic crops in the world. China is a large agricultural country. At present, the domestic mulch covers an area of ​​200 million mu, and the annual consumption is about 1 million tons. Its coverage area and consumption both rank first in the world. [0003] However, while plastic film mulching technology brings huge economic benefits to agricultural production and income, it also seriously pollutes the land. The currently used agricultural film is made of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/04C08K3/36C08J3/22A01G13/02
CPCY02A40/28
Inventor 徐静米庆华宁堂原谭业明韩宾
Owner SHANDONG AGRICULTURAL UNIVERSITY
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