Modified superfine rice hull powder reinforced PBAT full-degradable agricultural mulching film material and preparation method thereof

A technology of agricultural mulch film and rice husk powder, which is applied in the field of materials, can solve the problems of poor mechanical properties, difficulty in continuous molding, rough surface of the film, etc., and achieve the effect of low processing cost, simple manufacturing process and good dispersion

Inactive Publication Date: 2021-06-25
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

but Figure 7 As shown, its mechanical properties are poor, and the prepared film is easy to blow and difficult to form continuously, and the surface of the film is also very rough.

Method used

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  • Modified superfine rice hull powder reinforced PBAT full-degradable agricultural mulching film material and preparation method thereof
  • Modified superfine rice hull powder reinforced PBAT full-degradable agricultural mulching film material and preparation method thereof
  • Modified superfine rice hull powder reinforced PBAT full-degradable agricultural mulching film material and preparation method thereof

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in detail below through specific embodiments.

[0032] A preparation method of modified ultrafine rice husk powder reinforced PBAT fully degradable agricultural mulch material:

[0033] 1. Preparation method of modified superfine rice husk powder (self-made)

[0034] Put the rice husk raw material into a low-temperature cutterhead mill for coarse crushing, the temperature is controlled at -10°C to -5°C, and the rice husk is processed to 100-300 mesh to obtain rice husk powder A;

[0035] Put the rice husk powder A into the ultrafine mill, which is mainly composed of a low temperature system, a crushing host and a control cabinet, a four-stage cyclone separator, a pulse dust removal box, etc., and the temperature is controlled at -10°C to -5°C. ℃, it is crushed by high-speed rotating hammers, and the fineness of the crushing is controlled by adjusting the interval between the grading knife and the grading ...

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Abstract

The invention discloses a modified superfine rice hull powder reinforced PBAT full-degradable agricultural mulching film material and a preparation method thereof. The prepared superfine modified rice hull powder is simple in manufacturing process, free of pollution, low in processing cost and good in dispersity, the rice hull powder and a PBAT matrix have better compatibility, the prepared rice hull powder / PBAT fully-degradable mulching film material has good appearance, film-forming performance, mechanical performance and other comprehensive performance, and by adjusting the formula, the degradation period of the film material can be regulated and controlled within a certain range so as to meet the requirements of different weather conditions and different crop growth periods, the film is prepared from the material through extrusion blow molding, and the prepared film can meet the national standard requirements of full-biodegradable agricultural ground covering films. The application range of the rice hull powder / PBAT composite material in the field of film products is widened, and more choices are provided for application and development of degradable mulching film materials.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a modified ultrafine rice husk powder reinforced PBAT fully degradable agricultural mulch material and a preparation method thereof. Background technique [0002] At present, the agricultural mulch materials used on a large scale in the market are mainly made of polyethylene and polypropylene materials. Since they cannot be degraded by microorganisms, there are problems of difficult and incomplete recycling. They remain in the soil, affecting the physical and chemical properties of the soil, and affecting the soil. Harmful to water, according to the research of the Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences, when the residual plastic film per mu of soil reaches more than 4 kg, it can generally cause a 6% to 30% reduction in crop production. In order to solve environmental problems, the development of biologically...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L97/02C08L67/04C08L51/08C08K13/02C08K5/25C08K5/29C08K5/11C08K3/015C08K5/00C08K3/04C08J5/18A01G13/02
CPCC08J5/18A01G13/0275C08J2367/02C08J2497/02C08J2467/04C08J2451/08C08K13/02C08K5/25C08K5/29C08K5/11C08K3/015C08K5/0058C08K3/04Y02A40/28
Inventor 龙雪彬杜西兰熊一鸣宋季岭秦舒浩
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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