Nano material modified polythene ground covering film

Abstract

The present invention relates to a nano material modified polyethylene mulch film. It is made up by using (by weight portion) 1-98 portions of polyethylene resin, 1-50 portions of nano-grade calcium carbonate modification material and 0.03-5 portions of working adjuvant.

Description

technical field [0001] The invention relates to a polyethylene blown floor covering film, in particular to a nanometer material modified polyethylene floor covering film. Background technique [0002] With the development of agriculture, agricultural plastics have become an essential and important means of production for "efficient agriculture". But it takes decades or even longer for plastics to degrade, or decompose, and they can cause enormous and continuous pollution to the environment. Agricultural mulch is the most used category. On the one hand, it improves production efficiency, but at the same time faces the problem of environmental pollution, and does not conform to the national policy on environmental protection and sustainable development and international development trends. For this reason, various solutions have been tried. There are two main categories. One method is to degrade or decompose the plastic film to alleviate and reduce pollution, and the other i...

AI Technical Summary

Problems solved by technology

In terms of research and production of degradable or decomposing mulch, people have tried photodegradable mulch and biodegradable mulch, because of the need to add light conversion agents, photosensitive substances or degradable substances, special equipment is required, technical requirements are high, technical difficulty is great, and it affects transparency. Lightness, high price and other issues, the most important thing is that the degradable plastic film should adapt to the growth cycle of the crops, that is to say, the degradable plastic film is affected by the climate. It may be degraded before the crops mature, affecting the yield. If the light conversion agent, photosensitive substances or degradable substances are added less, the mulch may degrade after a period of time after the crops mature, affecting the subsequent agricultural work. Sometimes due to climate changes such as rainy or drought and so on will affect the degradation period of the degradable plastic film, resulting in a reduction in production. Because of this, there is no product with mature technology, stable quality and large-scale use so far.

On the other hand, plastic film recycling includes manual recycling and plastic film recycling machine recycling. Due to the different growth habits and cultivation modes of different crops, the physical and mechanical properties and aging resistance of plastic film are poor, and the area of ​​residual film is small, and it is easy to break during recycling. It is difficult to meet the technical requirements of production due to its low recovery rate, and it is not used at present; it is necessary to manually recycle the residual film, which has a high recovery rate, but due to the poor physical and mechanical properties and aging resistance of the mulch film, artificial Low recycling efficiency, high cost, and heavy labor stress, especially in Xinjiang's large-scale intensive production model, where a piece of land ranges from tens of acres to hundreds of acres, the above problems are particularly prominent