Completely biodegradable material filling master batch and preparation method thereof

Abstract

The invention discloses a completely biodegradable material filling master batch and a preparation method thereof. The completely biodegradable material filling master batch is characterized by comprising the following components in percentage by weight: 5-35 percent of completely biodegradable material based carrier, 60-90 percent of filler and 1-10 percent of auxiliary agent. The excellent completely biodegradable material filling master batch has great filling amount in a completely biodegradable material, remarkable cost advantage and good mechanical performance, has good dispersibility after adding, improves the heat resistance and stability of a biodegradable material and effectively improves the processing environment, and is a good completely biodegradable material filling master batch.

Description

【Technical field】 [0001] The invention relates to a filler masterbatch in a material product and a material filled with the filler masterbatch, in particular to a filler masterbatch and a material in the field of fully biodegradable materials. 【Background technique】 [0002] During the processing of petroleum-based plastic products, in order to reduce costs, some fillers are generally added. The fillers that have been used in petroleum-based plastics are inorganic powders such as calcium carbonate and glass microspheres, and starch and other materials. [0003] There are two processes for adding inorganic powder fillers. The first is to directly mix the inorganic powder into the material during processing, as described in the patent with the publication number CN1270969, which discloses a highly filled inorganic plastic Product materials, production process and production equipment, wherein high-filled inorganic plastic product materials are 20-40% by weight polypropylene, 1...

AI Technical Summary

Problems solved by technology

However, the material resins in the above-mentioned filler masterbatch are mainly non-degradable materials such as PP, PE, PVC, PS, ABS, etc., which are mainly used in petroleum-based materials. If they are filled into biodegradable materials, the compatibility will be poor , the filling effect is not ideal. Second, the filled biodegradable material cannot be completely biodegraded, which affects the degradation performance of the biodegradable material and will still cause harm to the environment.

[0005] Nowadays, fully biodegradable materials have received more and more attention because they become water and carbon dioxide after biodegradation, and will not cause harm to the environment. Since the 1960s and 1970s, people have begun to study biodegradation. In the research and development of materials, a variety of biodegradable materials have come out, such as polyhydroxyalkanoate, polybutylene succinate, polylactic acid, polycaprolactone and other biodegradable materials, but due to Fully biodegradable materials are relatively expensive, so it is necessary to consider adding some fillers to reduce costs without affecting their fully biodegradable properties. For example, the patent with the notification number CN1775856 discloses a preparation method for a composite biodegradable masterbatch , the degradable masterbatch is made of polycaprolactone, polylactic acid, polyethylene glycol, filler, lubricant through stirring and blending, and twin-screw extrusion granulation. The composite biodegradable masterbatch is directly added with filler It causes the powder to fly during the processing of plastic products, seriously pollutes the environment, and seriously affects the health of the production and processing personnel. Not only that, but also causes serious wear and tear to the equipment, and the addition amount is small, the cost advantage is not obvious, and the dispersion is also Inhomogeneity affects the performance of composite biodegradable materials, and cannot meet the requirements of adjusting product performance and improving the use effect of different material products

[0006] Especially for polyhydroxyalkanoate, which is a completely biodegradable material, the price is relatively expensive, and its mechanical properties are also quite different from those of petroleum-based materials and biological materials such as polylactic acid. How to effectively use inorganic fillers and how to treat them Reasonable selection of the ratio between the components so as to achieve the purpose of cost reduction and modification without affecting its complete biodegradability has not yet appeared. This is the inventor of this patent for a long time. Concentrate on the problems that the research expects to solve

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