CN1480484A

CN1480484A - Mineralized type plastic full degradable by photo-biology

Info

Publication number: CN1480484A
Application number: CNA021299803A
Authority: CN
Inventors: 熊国栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-02
Filing date: 2002-09-02
Publication date: 2004-03-10

Abstract

An optically and biologically degradable mineralized plastics is prepared from polyolefin, mineral, coupling agent, disperser and degradant through high-temp kneading, granulating and shaping to obtain film, bag, etc. Its advantage is full degradation and regulatable degradation time.

Description

Mineralized type plastic full degradable by photo-biology

The present invention relates to a kind of complete degradable plastic.It is mainly used in blowing complete degradable plastic farmland film, food bag, refuse bag, packing bag, disposable food or beverage container etc.

The object of the present invention is to provide a kind of never starch-containingly, do not contain photosensitizers, degradation rate 100%, and product cost is low, degradation time is adjustable, and less investment helps eliminating the complete degradable plastic of " white pollution ".Former plastic molding and processing plant need not more exchange device and can produce.

The present invention adopt China widely distributed, cheap, have the mineral substance of improving effect to make processing carrier to soil, successfully solved " starch-type biodegradable plastic " high temperature process difficulty, plant coking, waste is big, product strength is low, degradation effect is poor, cost is high and " Photosensitive degradative plastics " its photosensitizers costs an arm and a leg, the part photosensitizers contains technical barriers such as carcinogenic substance, at aspects such as material behavior, process innovation, degradation effect and equipment improvement its original innovative research is arranged.

The world today, various plastics are increasing.According to Chinese light industry centre of research and development introduction, China's nineteen ninety-five plastic refuse accumulative total reaches more than 8,000,000 tons.And world's plastics annual production has reached 1.3 hundred million tons, and all increases development at a high speed with surprising for many years.The plastic refuse that causes nature to retain is more and more.Especially various plastics bags, refuse bag, agricultural mulching, plastics industry packing film, disposable food or beverage container etc., after use is discarded, be exposed to nature for a long time in a large number, both contaminate environment, also can make mosquitos and flies and bacterial reproduction, it is not mashed to imbed underground a century, leaves over the field and hinders plant absorbing moisture and root growth again, make the arable land deterioration, crop production reduction.If be scattered in ground such as pasture, reservoir, ocean, easily eaten by mistake the back threat to life by cattle and sheep and aquatic organism.Of the present invention promoting the use of will fundamentally solve " white pollution " problem, to purify living environment.

The present invention is achieved in that

1, with polyolefine 30%-50%, mineral composite 50%-70%, coupling agent, dispersion agent, degradation agents 5-10% after stirring, add the plastics extruder granulation, and it is standby to make the complete degradable plastic masterbatch;

2, the complete degradable plastic masterbatch is added in following ratio, promptly can be made into variant production:

A, its complete degradable plastic farmland film formulation are:

New LDPE (film grade) (LDPE) 30%-40%, LLDPE (LLDPE) 40%-50%,

The high-fall masterbatch 10%-20% that separates.

B, its complete degradable plastic bag prescription are:

High density polyethylene(HDPE) (HDPE) 50%-60%, LLDPE (LLDPE) 20%-30%,

The high-fall masterbatch 10%-30% that separates.

The prescription of C, its full-degradable disposable food or beverage container is:

Polypropylene (PP) 50%-85%, the high-fall masterbatch 15%-50% that separates.

Can adjust proportion scale and processing temperature as required.

Claims

1, a kind of never starch-containing, degradation rate is 100% mineralized type plastic full degradable by photo-biology.Its complete degradable plastic masterbatch prescription is:

Polyolefine 30%-50%, mineral composite 50%-70%, coupling agent, dispersion agent,

Degradation agents 5-10%; Its high-fall farmland film formulation of separating is:

New LDPE (film grade) (LDPE) 30%-40%, LLDPE (LLDPE) 40%-50%,

The high-fall masterbatch 10%-20% that separates; Its complete degradable plastic bag prescription is:

High density polyethylene(HDPE) (HDPE) 50%-60%, LLDPE (LLDPE) 20%-30%,

The high-fall masterbatch 10%-30% that separates; The prescription of its full-degradable disposable food or beverage container is:

Polypropylene (PP) 50%-85%, the high-fall masterbatch 15%-50% that separates.

2, described by claim 1, it is characterized in that: utilize this prescription and starting material, resize ratio can be made products such as the different film of degradation time, bag, box, cup.