Total biodegraded thermoplastic starch resin

A thermoplastic starch, all-biological technology, applied in the field of degradable resin, can solve the problems of not meeting the function requirements, reducing the starch content, etc., and achieving the effects of being beneficial to biodegradation, increasing the content, and having excellent biodegradability

Inactive Publication Date: 2003-08-06
重庆远智能锁安全门有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of resin has a high starch content, it cannot be directly used to make plastic products. It needs to be mixed with other resins with good processing properties and mechanical properties during processing to meet the processing properties and mechanical properties of plastic products. Reduce the content of starch in plastic products, so that the starch content in plastic products is only about 35%, which can only be partially degraded
Can not meet the function requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Components and dosage (by weight)

[0008] Corn starch 50.0

[0009] Polyethylene 15.0

[0010] Cellulose 10.0

[0011] Undecenylbutanedioic anhydride 5.0

[0012] DCP 0.5

[0013] Dibutyl adipate 10.0

[0014] Glycidyl methacrylate 0.5

[0015] Di-tert-butylphenol 1.0

[0016] First, the starch is subjected to superfine treatment to make it sieve with a fineness of 2000 mesh, and at the same time, glycidyl methacrylate is added, then heat-melted at 100-150°C, and then put into a high-speed mixer, mixed with the heat-melted The blend containing dibutyl adipate, DCP, polyethylene and cellulose is evenly mixed, reacted for about 15 minutes, then added to a second-stage extruder for mixing, extruded and granulated to obtain the present invention. The performance testing results are shown in Table 1.

Embodiment 2

[0018] Components and dosage (by weight)

[0019] Tapioca starch 60.0

[0020] POE 8.0

[0021] Polyglycolide 30.0

[0022] Lauryl Succinate 1.0

[0023] DTBP 0.1

[0024] Di(2-ethylhexyl) adipate 6.0

[0025] Maleic anhydride 3.0

[0026] 246 0.1

[0027] Its preparation method is with embodiment 1. The performance testing results are shown in Table 1.

Embodiment 3

[0029] Components and dosage (by weight)

[0030] Pea starch 70.0

[0031] Polypropylene 5.0

[0032] Polyvinyl alcohol 20.0

[0033] Octadenoic Acid 3.0

[0034] BPO0.8

[0035] Dibutyl phthalate 2.0

[0036] Titanate 1.5

[0037] Antiager H 2.0

[0038] Its preparation method is with embodiment 1. The performance testing results are shown in Table 1.

[0039] Product Starch Content

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PUM

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Abstract

The composition of total-biodegraded thermoplastic starch resin includes (by weight portion) starch 50.0-75.0, blend A 5.0-20.0, blend B 10.0-20.0 graft modifier 1.0-5.0, chemical initiator 0.1-1.0, plasticizer 2.0-10.0, covering agent 0.3-3.0 and antioxidant 0.1-2.0, in which the blend A is one kind of more than one kind of thermoplastic resin, and the blend B is one kind of more than one kind of cellulose, polyvinyl alcohol, polyglycolic acid and polyester, and its graft modifier is one or more than one kind of long-chain unsaturated carboxylic acid and its ester. It can be directly used for making various tableware, cup, disk, film and package products, etc.

Description

technical field [0001] The invention relates to a degradable resin, in particular to a fully biodegradable thermoplastic starch resin. Background technique [0002] Plastic is one of the most widely used materials, and a large number of waste plastic products have seriously polluted the ecological environment. The development and application of degradable plastics is one of the most effective ways to solve this problem. At present, starch-filled plastics and starch-based plastics are mainly put into use. These degradable plastics have low starch content, generally 10% to 30%, poor degradability and mechanical properties, and have not fundamentally solved the "white pollution" problem. In order to overcome the above shortcomings, people began to improve starch-based plastics to improve the starch content and mechanical properties of the products. Chinese patent 1296988 discloses a production method of biodegradable starch resin with high starch content. Its raw materials inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/02
Inventor 陈庆郭林
Owner 重庆远智能锁安全门有限公司
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