Full-biodegradable starch-base in-situ fiber reinforced composite material and preparation method thereof

A technology for degrading starch and fiber reinforcement, which is applied in the field of fully biodegradable starch-based in-situ fiber-reinforced composite materials and their preparation, can solve the problem that the in-situ composite fiber-forming technology has not been applied, and achieves good processing performance and application performance. High mechanical properties, the effect of solving white pollution

Inactive Publication Date: 2012-10-03
SOUTHWEAT UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in-situ fiber-forming composite technology has been researched in the field of synthetic polymer materials, but in the field of starch-based biodegradable materials, in-situ composite fiber-forming technology has not been applied

Method used

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  • Full-biodegradable starch-base in-situ fiber reinforced composite material and preparation method thereof

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Embodiment Construction

[0013] The present invention is realized by the following specific implementation measures, wherein the parts of raw materials are parts by weight unless otherwise specified. The present invention is described in further detail below in conjunction with embodiment.

[0014] The consumption of each component in the embodiment of the present invention is shown in the table below.

[0015]

[0016] Note: The numbers in the table refer to the weight ratio (number of parts).

[0017] Its implementation steps are:

[0018] The first step is premixing of ingredients: take natural starch, plasticizer, fiber-forming resin, and compatibilizer according to the weight ratio listed in the table, and stir and mix in a high-speed mixer for 20-30 minutes;

[0019] The second step, melt blending and granulation: put the premixed ingredients in a twin-screw extruder to melt blend and extrude, the extrusion temperature is 145-190°C, the die temperature is 130-170°C, The screw speed of the ...

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Abstract

The invention discloses a full-biodegradable starch-based in-situ fiber reinforced composite material and a preparation method thereof. The starch-based full-biodegradable in-situ fiber reinforced composite material comprises the components in parts by weight: 60-80 parts of natural starch, 15-25 parts of plasticizer, 5-20 parts of fiber-forming resin and 0.5-2 parts of compatibilizer. The preparation method comprises the three steps of: mixing the natural starch, the plasticizer and the fiber-forming resin with the compatibilizer for 20-30 minutes at high speed according to a certain ratio; carrying out melt blending and extrusion in a double-screw extruder with an extrusion temperature of 145-190 DEG C, an extrusion die temperature of 130-170 DEG C and a screw rotation speed of 20-40 r / min; and cooling in natural air; and pelletizing to prepare the starch-based in-situ fiber reinforced composite material. The full-biodegradable starch-based in-situ fiber reinforced composite material contains thermoplastic starch as high as over 80% and has good processing property and application performance.

Description

technical field [0001] The invention relates to a starch-based composite material, in particular to a fully biodegradable starch-based in-situ fiber-reinforced composite material and a preparation method thereof. Background technique [0002] Natural starch is rich in sources, cheap and renewable. Among the many biomass-based polymer degradable materials, the research on starch-based biodegradable materials has attracted special attention. Starch-based biodegradable materials can be biodegraded in a variety of environments, and the final degradation products of carbon dioxide and water can be recycled through photosynthesis without any pollution to the environment. Over the years, domestic and foreign research on starch-based biodegradable materials has attached great importance, but the mechanical properties of pure thermoplastic starch materials are too poor to be used alone. It needs to be blended or compounded with other synthetic degradable polymer materials to achieve ...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L67/04C08L67/02C08L23/08C08L33/02C08K5/053C08K5/20C08K5/17C08K5/1539C08K5/11C08K5/09B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B7/7461B29B7/90B29B9/06B29B9/12B29B9/14B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 罗学刚李纪伟林晓艳
Owner SOUTHWEAT UNIV OF SCI & TECH
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