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Biodegradable plastic

A technology of biodegradable plastics and raw materials, applied in the field of plastic films, can solve the problems of weak affinity of the two-phase interface, limitations in the application of composite materials, and decline in mechanical properties, and achieve easy industrial implementation, environmental friendliness, and production efficiency high effect

Active Publication Date: 2014-01-01
江苏湘园化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Talc powder filled PP composite materials have been widely used in the production of automotive parts and daily necessities. Compared with PP without talc powder, its products have good appearance quality, low shrinkage and higher heat distortion temperature. However, due to The affinity of the two-phase interface is not strong, and the direct filling of talc powder often leads to the decline of some mechanical properties, which limits the application of composite materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A biodegradable plastic, characterized in that: its raw material components and parts by weight are respectively:

[0034] Vegetable fiber starch 45-60,

[0035] Glycerin 4-6

[0036] Polyethylene 40

[0037] Polylactic acid 20-40

[0038] Synthetic resin 60-80

[0039] Auxiliary 10-15

[0040] Pullulan 5-8

[0041] Antioxidant 2-4

[0042] UV absorber 1-1.5

[0043] Polyethylene is mixed with low-density polyethylene, medium-density polyethylene and high-density polyethylene according to the mass ratio of 2:2:1.

[0044] Auxiliaries include plasticizer, lubricant, thermal stabilizer, described plasticizer selects any one in tributyl citrate, mineral oil, tributyl acetate, urea, formamide, and described lubricant is hard magnesium fatty acid, and the heat stabilizer is triphenyl phosphite.

[0045] The antioxidant is Antioxidant 1010 or Antioxidant 168.

[0046] A method for preparing the biodegradable plastic, characterized in that: the steps are:

[0047] (...

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Abstract

Biodegradable plastic is characterized by including the following raw materials in parts by weight: 45-60 parts of plant fiber starch, 4-6 parts of glycerinum, 40 parts of polyethylene, 20-40 parts of polylactic acid, 60-80 parts of synthetic resin, 10-15 parts of auxiliaries, 5-8 parts of pulullan, 2-4 parts of an antioxidant and 1-1.5 parts of an ultraviolet light absorbent.

Description

technical field [0001] The invention relates to a plastic film, in particular to a biodegradable plastic. Background technique [0002] As a general-purpose plastic, polypropylene has many excellent properties, but due to defects such as low mechanical strength, poor heat resistance, large shrinkage deformation, and poor creep resistance, its application, especially as a structural material, is greatly restricted. It cannot be used as a high-performance engineering plastic. Therefore, modifying polypropylene and engineering it has become an important research topic. [0003] Talc powder is a mineral composed of layered silicate crystals, PP filled with talc powder has good heat resistance, low shrinkage, good dimensional stability and high hardness. Talc powder filled PP composite materials have been widely used in the production of automotive parts and daily necessities. Compared with PP without talc powder, its products have good appearance quality, low shrinkage and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L3/02C08L23/06C08L23/08C08L67/04C08L5/00
Inventor 周建颜玉荣
Owner 江苏湘园化工有限公司
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