Complete biodegradation foam material and preparation method thereof

A foaming material and biodegradable technology, applied in the field of foaming materials, can solve the problems of unsatisfactory physical properties and manufacturing costs, low strength and fracture performance of foamed products, and inability to completely degrade foamed materials, etc. Hydrophilic, accelerated degradation rate, high crystallinity

Active Publication Date: 2010-06-23
SHENZHEN ECOMANN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the research on degradable foaming materials is mainly in the blending and foaming of starch, starch and polylactic acid (PLA), polyhydr

Method used

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  • Complete biodegradation foam material and preparation method thereof

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Effect test

Embodiment 1

[0023] The foaming material of this embodiment is prepared from 60kg of polyhydroxybutyrate, 40kg of cornstarch and 3.5kg of AC composite foaming agent.

[0024] Preparation method: dehumidify the corn starch in a high-speed mixer, the moisture content of the corn starch is between 0-1%, dry the polyhydroxybutyrate and AC composite foaming agent in an electric blast drying oven, and the drying temperature is The temperature is 80°C, and the drying time is 6 hours; weigh all the components of the corresponding weight, add them to a high-speed mixer and stir at high speed for 5 minutes; put the mixed materials into a twin-screw extruder to melt and plasticize, and complete the blending. The mixing temperature is 120°C; all kinds of foamed products are formed by special auxiliary molding heads such as T-shaped.

Embodiment 2

[0026] The weight of each component of the foam material of this embodiment is 40 kg of P3HB4HB (4HB molar content is 90%), 60 kg of potato starch, 1 kg of AC foaming agent, and 0.5 kg of foaming accelerator ZnO.

[0027]Preparation method: dehumidify potato starch in a high-speed mixer, and the moisture content of potato starch is between 0-1%; dry P3HB4HB, AC foaming agent, and foaming accelerator ZnO in an electric blast drying oven, and the drying temperature The temperature is 100°C, and the drying time is 2 hours; weigh all the components of the corresponding weight, add them to a high-speed mixer and stir at high speed for 10 minutes; put the mixed materials into a twin-screw extruder to melt and plasticize, and complete the blending. The mixing temperature is 150°C; after being granulated by a twin-screw extruder, it is foamed into products of various shapes in a heated mold, and the mold heating temperature is 120°C.

Embodiment 3

[0029] The weight of each component of the foaming material of the present embodiment is respectively P3HB4HB (4HB molar content is 10%) 80kg, tapioca starch powder 20kg, AC composite foaming agent 1.5kg, ZnO 0.3kg, stearic acid 0.8kg, four [ 0.5 kg of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol, 5 kg of talc, and 1 kg of glycerin.

[0030] Preparation method: dehumidify tapioca starch in a high-speed mixer, and the moisture content of tapioca starch is between 0-1%; mix P3HB4HB, AC composite foaming agent, ZnO, stearic acid, tetrakis [β-(3,5- Di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, talcum powder, and glycerin are dried in an electric blast drying oven at a drying temperature of 60°C and a drying time of 9 hours; weigh all components of the corresponding weight , put into the high-speed mixer and stir at high speed for 10 minutes; put the mixed material into the twin-screw extruder to melt and plasticize, and complete the blendin...

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Abstract

The invention discloses a complete biodegradation foam material and a preparation method thereof; the complete biodegradation foam material mainly comprises polyhydroxy alkanoate, starch and foaming agent; the complete biodegradation foam material is characterized in that: the complete biodegradation foam material does not comprise polylactic acid, and 20-80 parts of the polyhydroxy alkanoate, 20-60 parts of starch and 0.5-5 parts of the foaming agent are included by weight. The foam material takes the starch and the polyhydroxy alkanoate as main raw materials, has good physical properties, can carry out complete biodegradation and greatly reduces the manufacturing cost of the foam material.

Description

technical field [0001] The invention relates to the field of foaming materials, more specifically, to a fully biodegradable foaming material and a preparation method thereof. Background technique [0002] The traditional plastic industry consumes a lot of petroleum energy and the "white pollution" has attracted more and more attention. Since the 1960s and 1970s, people have begun to research and develop biodegradable plastics. At present, there are A variety of biodegradable materials (Biodegradable materials) have come out. After biodegradation, biodegradable materials become water and carbon dioxide, which will not cause harm to the environment. At present, most researches on biodegradable plastics focus on starch, polylactic acid (PLA), polyhydroxyalkanoate (PHAs), etc., but because of the high cost and immature technology, it is difficult to be widely used. The most serious environmental pollution in my country is mainly manifested in disposable packaging materials, fil...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L3/02C08J9/10B29C47/92B29C44/60B29C48/92
Inventor 蓝小平张向南
Owner SHENZHEN ECOMANN BIOTECH
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