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Solution preparation method for polylactic acid/nylon 6 blend alloy biodegradable material

A biodegradable material and biodegradable technology, which is applied in the field of solution preparation of polylactic acid/nylon 6 blended alloy biodegradable materials, achieves the effects of fast biodegradation, poor toughness and effective dispersion

Inactive Publication Date: 2017-03-15
李博琪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Provide a method for preparing a solution of biodegradable materials containing nylon 6 and polylactic acid, which solves the problem of biodegradation of non-degradable plastics, thereby solving the white pollution caused by plastics to the environment. The invention is applicable to all types of materials such as films, sheets, and pipes. This type of alloy polymer material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 5 kg of 70% of nylon 6, 25% of polylactic acid, 5% of ethylene-methyl acrylate-glycidyl methacrylate random terpolymer in proportion. Dry the polylactic acid and nylon 6 for 2 hours, and seal it for use; then put the nylon 6 and polylactic acid into the solvent and dissolve at a certain temperature; after the two polymers are completely dissolved; quickly heat up to remove the solvent , to obtain a well-dispersed polylactic acid / nylon 6 blend; dry and crush the blend, then add ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, mix evenly, and Injection molding in the injection molding machine into sheets or other products. The injection molding temperature is controlled at 210-250°C. Finally, the natural degradation experiment was carried out. The natural degradation experiment was carried out in accordance with the provisions of the national standard GB / T20197-2006. The test result is: the biodegradation rate is 62%, exceeding the ≥60% stipulate...

Embodiment 2

[0028] Take by weighing 5 kg of 50% of nylon 6, 45% of polylactic acid, 5% of ethylene-methyl acrylate-glycidyl methacrylate random terpolymer. Dry the polylactic acid and nylon 6 for 2 hours, and seal it for use; then put the nylon 6 and polylactic acid into the solvent and dissolve at a certain temperature; after the two polymers are completely dissolved; quickly heat up to remove the solvent , to obtain a well-dispersed polylactic acid / nylon 6 blend; dry and crush the blend, then add ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, mix evenly, and Injection molding in the injection molding machine into sheets or other products. The injection molding temperature is controlled at 210-250°C. Finally, the natural degradation experiment was carried out. The natural degradation experiment was carried out in accordance with the provisions of the national standard GB / T20197-2006. The test result is: the biodegradation rate is 85%, exceeding the national standard...

Embodiment 3

[0030] Take by weighing 5 kg of 40% of nylon 6, 55% of polylactic acid, 5% of ethylene-methyl acrylate-glycidyl methacrylate random terpolymer. Dry the polylactic acid and nylon 6 for 2 hours, and seal it for use; then put the nylon 6 and polylactic acid into the solvent and dissolve at a certain temperature; after the two polymers are completely dissolved; quickly heat up to remove the solvent , to obtain a well-dispersed polylactic acid / nylon 6 blend; dry and crush the blend, then add ethylene-methyl acrylate-glycidyl methacrylate random terpolymer, mix evenly, and Injection molding in the injection molding machine into sheets or other products. The injection molding temperature is controlled at 210-250°C. Finally, the natural degradation experiment was carried out. The natural degradation experiment was carried out in accordance with the provisions of the national standard GB / T20197-2006. The test result is: the biodegradation rate is 95%, exceeding the ≥60% stipulated b...

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PUM

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Abstract

The invention relates to a solution preparation method for a polylactic acid / nylon 6 blend alloy biodegradable material. The blend alloy is prepared by mixing the following raw materials including, by weight, 40-70% of nylon 6, and 30-60% of polylactic acid. The preparation method includes the steps of: drying the polylactic acid and nylon 6 for 2-3 h, and adding the polylactic acid and nylon 6 in a solvent to dissolve the materials at certain temperature; quickly increasing the temperature to remove the solvent to obtain a polylactic acid / nylon 6 blend being uniformly mixed and dispersed; and drying and crushing the blend and adding 5-10% of a compatibilizer, and performing injection moulding to the blend in an injection moulding machine to mould a sheet material or other products. The polylactic acid / nylon 6 blend alloy product has excellent biodegradability and solves the problem of environment pollution of the nylon 6 which is a non-degradable plastic component.

Description

technical field [0001] The invention aims to improve or solve the technical problem of biodegradation performance of non-biodegradable polymer materials. The invention relates to a method for preparing a polylactic acid / nylon 6 blended alloy biodegradable material by solution blending a biodegradable material polylactic acid and a non-biodegradable material nylon 6. Background technique [0002] The application range and amount of polymer materials are increasing rapidly, but most polymer materials degrade very slowly in nature after they are discarded, seriously polluting the environment. In recent years, the white pollution caused by waste plastics that are difficult to degrade has become more and more serious, which has attracted widespread attention all over the world, and some protective and restrictive measures have been taken. Molecular materials have become an urgent technical problem to be solved. [0003] At present, there are not many types and amounts of natura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L67/04C08L23/08
CPCC08L77/02C08L67/04C08L2201/06C08L2205/03C08L2205/08C08L23/0884
Inventor 不公告发明人
Owner 李博琪
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