Fully-biodegradable material as well as preparation method and application thereof

A biodegradable material and whole biological technology, applied in the field of fully biodegradable materials and their preparation, can solve problems such as non-degradability, and achieve the effects of easy access, low environmental pollution, and good degradation performance.

Inactive Publication Date: 2015-11-11
ECOTA ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution adds phenolic epoxy compounds to the polylactic acid base material, which can promote the combination of the special molecular structures of polylactic acid, phenolic epoxy compounds, and natural starch, thereby improving the biodegradability of the poly

Method used

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  • Fully-biodegradable material as well as preparation method and application thereof
  • Fully-biodegradable material as well as preparation method and application thereof
  • Fully-biodegradable material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1

[0042] First, weigh the following parts by weight: 60 parts by weight of polylactic acid (Natureworks4032D), 30.5 parts by weight of corn starch (national starch), copolymer of butylene adipate and butylene terephthalate (Xin Fu Pharmaceutical) 6 parts by weight, 3 parts by weight of polylactide polyol (Shenzhen Guanghua Weiye Industrial Co., Ltd., D-PLA220B), and 0.5 parts by weight of titanate coupling agent (Nanjing Youpu Chemical Co., Ltd., UP-311W) Copies.

[0043] The preparation process is as follows: first use high-speed mixing equipment to dry polylactic acid, starch and copolymer of butylene adipate and butylene terephthalate at 105°C for 30 min; then add polylactide polyol and titanic acid The ester coupling agent is mixed uniformly to obtain a mixture material; the mixture material is added to the twin-screw extruder to melt and blend; finally, air cooling and granulation are performed to obtain a fully biodegradable material. The screw length-to-di...

Example Embodiment

[0044] Example 2

[0045] First, weigh the following parts by weight: 40 parts by weight of polylactic acid (Natureworks4032D), 44.5 parts by weight of corn starch (national starch), copolymer of butylene adipate and butylene terephthalate (Xin Fu Pharmaceutical) 10 parts by weight, polylactide polyol (Shenzhen Guanghua Weiye Industrial Co., Ltd., D-PLA220B) 5 parts by weight, titanate coupling agent (Nanjing Youpu Chemical Co., Ltd., UP-311W) 0.5 parts by weight Copies.

[0046] The preparation process is as in Example 1.

Example Embodiment

[0047] Example 3

[0048] First, weigh the following parts by weight: 17 parts by weight of polylactic acid (Natureworks4032D), 30 parts by weight of corn starch (national starch), copolymer of butylene adipate and butylene terephthalate (Xin Fu Pharmaceutical) 49.5 parts by weight, polylactide polyol (Shenzhen Guanghua Weiye Industrial Co., Ltd., D-PLA220B) 3 parts by weight, titanate coupling agent (Nanjing Youpu Chemical Co., Ltd., UP-311W) 0.5 parts by weight Copies.

[0049] The preparation process is as in Example 1.

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Abstract

The invention discloses a fully-biodegradable material as well as a preparation method and application thereof. The fully-biodegradable material is prepared from the following raw materials in percentage by weight: 15%-70% of polylactic acid, 20%-50% of starch, 3%-65% of a copolymer of butanediol adipate and butanediol terephthalate, 1%-10% of polylactide polyol, 0.1%-5% of a titanate coupling agent and 0-5% of an aid. The fully-biodegradable material has excellent mechanical property, can be biologically degraded and is relatively low in cost. The preparation method can be easily implemented by virtue of existing high-speed mixing equipment and double-screw extruders. The fully-biodegradable material has excellent and stable performance, can be biologically degraded, is relatively low in cost and is applicable to the fields of plastic packaging materials, agricultural plastic mulching films, disposable tableware and the like.

Description

technical field [0001] The invention relates to the technical field of fully biodegradable materials, in particular to a fully biodegradable material and its preparation method and application. Background technique [0002] With the rapid development of the plastics industry, plastics have been widely used in various fields of the national economy and have a wide range of uses. However, it is followed by the generation of a large amount of waste plastics (for example, about 5 million tons of waste plastics are produced in China every year), most of which are polypropylene (PP), polyethylene (PE) and polystyrene ( PS) materials, these materials cannot be decomposed naturally, therefore, after the products such as disposable plastic packaging materials, agricultural films and disposable tableware made of PP materials, PE materials and PS materials are used, if their wastes are discarded at will , will accumulate on the land due to its non-degradability, causing serious white ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L3/02C08L67/02C08K5/10
Inventor 王惠群
Owner ECOTA ENVIRONMENTAL TECH
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