High-strength thermoplastic starch composite material and preparation method thereof

A thermoplastic starch and composite material technology, applied in the field of composite materials, can solve the problems of low strength, affecting the application range, poor mechanical properties of thermoplastic starch materials, etc., and achieve the effect of improving willfulness, high strength and increasing plasticity

Inactive Publication Date: 2015-09-16
SUZHOU YUNSHU NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermoplastic starch material has poor mechanical properties and low strength, which seriously affects its application range.

Method used

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  • High-strength thermoplastic starch composite material and preparation method thereof

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Effect test

Embodiment 1

[0016] Embodiment 1: A high-strength thermoplastic starch composite material, including the following components in mass parts ratio: thermoplastic starch 30wt%, calcium carbonate 10wt%, hemicellulose 20wt%, vegetable protein 10wt%, polyethylene 25wt%, auxiliary agent 5wt %.

[0017] In this embodiment, the mesh number of the calcium carbonate is 80-300 mesh; the vegetable protein is a compound of soybean protein isolate and zein; Oxygen agent 1076 0.5wt%, polyethylene glycol 3wt%, silane coupling agent 1.5wt%; The hemicellulose is polygalactose glucomannose hemicellulose, and the aspect ratio of the hemicellulose is 3~15.

[0018] The preparation method of described a kind of high strength thermoplastic starch composite material, comprises the following steps:

[0019] a. Modification of calcium carbonate: put calcium carbonate and 1 / 3 mass of silane coupling agent in absolute ethanol, react at 90°C for 4h, then filter and dry;

[0020] b. Hemicellulose pretreatment: place...

Embodiment 2

[0024] Embodiment 2: A high-strength thermoplastic starch composite material, including the following components by mass ratio: thermoplastic starch 35wt%, calcium carbonate 5wt%, hemicellulose 30wt%, vegetable protein 5wt%, polyethylene 17wt%, auxiliary agent 8wt %.

[0025] In this embodiment, the mesh number of the calcium carbonate is 80-300 mesh; the vegetable protein is a compound of soybean protein isolate, pea protein, peanut protein, corn protein, and wheat protein; the auxiliary agent and its proportion The mass ratio of the composite material is 0.8wt% of antioxidant 1076, 5wt% of polyethylene glycol, and 2.2wt% of silane coupling agent; A compound of galactose-glucomannose hemicellulose, the aspect ratio of the hemicellulose is 3-15.

Embodiment 3

[0026] Embodiment 3: A high-strength thermoplastic starch composite material, including the following components by mass ratio: thermoplastic starch 27wt%, calcium carbonate 12wt%, hemicellulose 24wt%, vegetable protein 12wt%, polyethylene 21wt%, auxiliary agent 4wt %.

[0027] In the present embodiment, the mesh number of the calcium carbonate is 80-300 mesh; the vegetable protein is isolated soybean protein; , polyethylene glycol 2.5wt%, silane coupling agent 1.2wt%; the hemicellulose is polyxylan hemicellulose, and the aspect ratio of the hemicellulose is 3-15.

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Abstract

The invention discloses a high-strength thermoplastic starch composite material. The material comprises the following components in parts by mass: 25-35wt% of thermoplastic starch, 5-15wt% of calcium carbonate, 15-30wt% of hemicelluloses, 5-15wt% of vegetable protein, 15-30wt% of polyethylene, and 3-8wt% of auxiliaries. The invention further discloses a preparation method of the high-strength thermoplastic starch composite material at the same time. The preparation method comprises the steps of modifying the calcium carbonate, pre-treating the hemicelluloses, premixing and forming processing. The obtained composite material is good in mechanical property, high in strength, environment-friendly and easy to degrade.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a high-strength thermoplastic starch composite material and a preparation method thereof. Background technique [0002] Plastics have been widely developed in many fields because of their light weight, high strength, stable chemical properties and low cost. The plastics industry is developing rapidly, but the used plastics have not been properly disposed of, and the plastics are just garbage, which brings serious pollution to the natural environment. Non-degradable plastics are mostly made of low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE), followed by high-density polyethylene (HDPE), polypropylene (PP), polystyrene (PS) and polyvinyl chloride (PVC) ) developed and generated. And these plastics are generally finally disposed of as solid waste. The discarding of solid waste such as plastics will pollute the environment, deep burial will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02C08L5/14C08L89/00C08L23/06C08L71/02C08K9/06C08K3/26
Inventor 戴晓宸
Owner SUZHOU YUNSHU NEW MATERIAL TECH
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