Thermoplastic biodegradable plastic and preparation method thereof

A biodegradable plastic and thermoplastic technology, applied in the field of thermoplastic biodegradable plastic and its preparation, can solve the problems of difficult large-scale industrialization of PPC, low glass transition temperature, poor processing performance, etc. Good performance and enhanced thermal stability

Pending Publication Date: 2021-11-30
吴春秋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing biodegradable plastics have many problems such as poor plasticity. For example, polymethylethylene carbonate (PPC) has the advantages of good flexibility, high elongation at break, high ba

Method used

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  • Thermoplastic biodegradable plastic and preparation method thereof
  • Thermoplastic biodegradable plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] A thermoplastic biodegradable plastic, including raw materials of the following mass parts: 20 parts of starch, 20 parts of phenylene terephthalate, 60 parts of propylene oxide, 30 parts of dichloromethane, 30 hydrochloric acids, Methanol solution 30 parts, 1 maleic anhydride, 10 calcium carbonate, 5 part of crosslinking agent, 1 catalyst;

[0027] The preparation method of the thermoplastic biodegradable plastic includes the following steps:

[0028] Step 1: Add a mass fraction of a catalyst to a stainless steel high pressure reaction kettle, drying at 80 ° C for 24 h, adding a mass fraction of propylene oxide and maleic anhydride, accessing CO 2 The gas allows the pressure to reach 4 MPa, the stirring speed is 100 r / min, the reaction temperature is 70 ° C, the reaction is 24 h, and after the reaction is stopped, it is cooled to room temperature to obtain a viscous.

[0029] Step 2: Twenty times in phase of dichloromethane, hydrochloric acid, distilled...

Example Embodiment

[0031] Example 2

[0032] A thermoplastic biodegradable plastic comprising a raw material of the following mass: 40 parts of starch, 60 parts of phenylene terephthalate, 100 parts of cyclophily, 50 parts of dichloromethane, 50 hydrochloride, 50 parts of hydrochloride, 50 parts of methanol solution, 10 maleic anhydride, 20 calcium carbonate, 15 part of crosslinking agent, 10 catalysts;

[0033] The preparation method of the thermoplastic biodegradable plastic includes the following steps:

[0034] Step 1: Add a mass fraction of a catalyst to a stainless steel high pressure reaction kettle, drying at 90 ° C for 24 h, adding a mass fraction of propylene oxide and maleic anhydride, accessing CO 2 The gas allows the pressure to reach 6 MPa, the stirring speed is 300 r / min, the reaction temperature is 90 ° C, the reaction is 24h, and the reaction is stopped, cooled to room temperature to obtain a viscous.

[0035] Step 2: Rinse the viscies in sequentially with dichloromethane, hydroch...

Example Embodiment

[0037] Example 3

[0038] A thermoplastic biodegradable plastic, including raw materials of the following mass: 30 parts of starch, 40 parts of terephthalate, 80 parts of propylene oxide, 40 parts of dichloromethane, 40 parts of hydrochloride, 40 parts of dichloromethane, 40 parts of dichloromethane, 40 parts of methanol solution, 5 parts of maleic anhydride, 15 calcium carbonate, 10 crosslinking agents, 5 catalysts;

[0039]The preparation method of the thermoplastic biodegradable plastic includes the following steps:

[0040] Step 1: Add a mass fraction of a catalyst to the stainless steel high pressure reaction kettle, drying at 85 hours, adding a mass fraction of propylene oxide and maleic anhydride, accessing CO 2 The gas, so that the pressure reaches 5 MPa, the stirring speed is 200R / min, the reaction temperature is 80 ° C, the reaction is 24 h, after the reaction is stopped, cooled to room temperature to obtain a viscous

[0041] Step 2: Twenty times in phase of dichlorom...

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Abstract

The invention relates to the technical field of degradable plastics, and in particular, relates to a thermoplastic biodegradable plastic and a preparation method thereof. The thermoplastic biodegradable plastic comprises the following raw materials in parts by mass: 20-40 parts of starch, 20-60 parts of poly(butylene adipate-co-terephthalate), 60-100 parts of epoxypropane, 30-50 parts of dichloromethane, 30-50 parts of hydrochloric acid, 30-50 parts of a methanol solution, 1-10 parts of maleic anhydride, 10-20 parts of calcium carbonate, 5-15 parts of a cross-linking agent and 1-10 parts of a catalyst. The raw materials have good compatibility, and the plastic has good biodegradability, good thermoplasticity, high mechanical strength, simple production and low production cost, and has positive significance for environmental protection and actual production application.

Description

technical field [0001] The invention relates to the technical field of degradable plastics, in particular to a thermoplastic biodegradable plastic and a preparation method thereof. Background technique [0002] With the advantages of low cost, strong plasticity and light weight, plastics quickly occupy an extremely important market in the world industry. The market demand for plastic products mainly focuses on agricultural plastic products, packaging plastic products, construction plastic products, industrial transportation and engineering plastic products, etc. . With the widespread use of plastic products and the discarding of plastic product waste, because traditional plastics are difficult to degrade and plastic waste brings serious environmental problems, more and more people realize the importance of developing degradable plastics to replace traditional plastics . [0003] Biodegradable plastics are considered to be one of the important ways to solve the "white pollu...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L3/04C08L77/12C08K3/26C08K5/14C08G64/34
CPCC08L69/00C08G64/34C08L2201/08C08K2201/011C08K2003/265C08L2201/06C08L67/02C08L3/04C08L77/12C08K3/26C08K5/14
Inventor 吴春秋李玲群
Owner 吴春秋
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