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Biodegradable resin composition

A technology of biodegradable resins and compositions, applied in the field of polymer resin compositions, can solve the problems of slow degradation speed, affecting performance, easy aging, etc., and achieve the effects of accelerated degradation speed, good mechanical properties, and easy hydrolysis

Inactive Publication Date: 2013-09-11
南通华盛高聚物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carbon dioxide / propylene oxide copolymer can be completely degraded under forced composting conditions, experiments have shown that its degradation rate is significantly slower than materials such as polylactic acid and polybutylene succinate. Long-term storage, but the prolongation of composting time after use will lead to an increase in cost; at the same time, due to the rapid degradation of polylactic acid, polybutylene succinate and other materials, they are easy to age during transportation and affect performance , so there is a limit to the time of inventory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 , Preparation of biodegradable resin composition

[0021] 80g number average molecular weight is 40000 PPC, 20g polyester polyurethane, 1g carbodiimide, 5g monoglyceride stearate, 5g tributyl citrate and 10g white carbon black are placed in high-speed mixer with 1500r / The speed of min was blended for 5 minutes to obtain a mixture; then the mixture was placed in a vacuum oven, dried in vacuum at 45°C for 10 hours, then transferred to a Haake internal mixer, and banburyed at 180°C for 5 minutes at a speed of 30r / min to obtain biodegradable resin composition;

[0022] The above-mentioned polyester polyurethane is obtained by reacting polybutylene adipate and diisocyanate in the presence of a catalyst and a chain extender.

Embodiment 2

[0023] Example 2 , Preparation of biodegradable resin composition

[0024] 20g number average molecular weight is 60000 PPC, 80g polyester polyurethane, 5g maleic anhydride, 0.1g glyceryl tristearate, 0.5g macrogol 1000 and 0.5g calcium carbonate are placed in a high-speed mixer at 1500r Blended at a speed of 30r / min for 5min to obtain a mixture; then the mixture was placed in a vacuum oven, dried under vacuum at 45°C for 10h, then transferred to a Haake internal mixer, and internally kneaded at 190°C for 5min at a speed of 30r / min to obtain a bio degradable resin composition;

[0025] The above-mentioned polyester polyurethane is obtained by reacting polypropylene adipate and diisocyanate in the presence of a catalyst and a chain extender.

Embodiment 3

[0026] Example 3 , Preparation of biodegradable resin composition

[0027] 7000g number-average molecular weight is 80000 PPC, 3000g polyester polyurethane, 200g zinc stearate, 200g oleic acid amide, 50g epoxy soybean oil and 70g montmorillonite are placed in a high-speed mixer with a speed of 1500r / min Mix for 8 minutes to obtain a mixture; then place the mixture in a vacuum oven, dry it in vacuum at 45°C for 10 hours, then transfer it to a twin-screw extruder with an aspect ratio of 35, extrude and granulate at a speed of 100r / min to obtain biodegradable resin composition;

[0028] The above-mentioned polyester polyurethane is obtained by reacting polyethylene adipate and diisocyanate in the presence of a catalyst and a chain extender.

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Abstract

The invention provides a biodegradable resin composition. The biodegradable resin composite comprises the following components in parts by weight: 20-80 parts of carbon dioxide-propylene epoxide copolymer, 20-80 parts of polyester type polyurethane, 0.1-5 parts of a thermal stabilizer, 0.1-5 parts of a lubricant, 0.5-5 parts of a plasticizer and 0.5-10 parts of inorganic filler. The invention also relates to an application of the biodegradable resin composition in preparation of films, sheets, molded goods or fibers. The biodegradable resin composition solves the problem that a general polyurethane material which has a higher melting point cannot be melted with the carbon dioxide-propylene epoxide copolymer easily at the same time; moreover, a product prepared from the biodegradable resin composition provided by the invention has good mechanical properties, is beneficial for long-term storage and long-distance transport, increases the degradation velocity under a composting condition, shortens the composting time after use, and is suitable for preparing biodegradable plastics.

Description

technical field [0001] The invention relates to a polymer resin composition, in particular to a biodegradable resin composition. Background technique [0002] Biodegradable plastics are one of the effective ways to control the environmental pollution caused by waste. In recent years, countries around the world have attached great importance to the development of biodegradable plastics, especially biodegradable plastics whose raw materials come from renewable resources or industrial waste gas (carbon dioxide), and polylactic acid (PLA), polyhydroxyalkanoate (PHA), carbon dioxide -Propylene oxide copolymer (PPC), polybutylene succinate (PBS), poly(butylene terephthalate-adipate (PBAT) and other biodegradable plastics. [0003] Carbon dioxide-propylene oxide copolymer (PPC), also known as polypropylene carbonate or polypropylene carbonate, is an aliphatic polycarbonate formed by copolymerization of carbon dioxide and propylene oxide. with CO 2 The route of synthesizing biode...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L75/06C08L67/04C08L67/02
CPCC08L69/00C08G2230/00
Inventor 张春华
Owner 南通华盛高聚物科技股份有限公司
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