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Preparation method and application of polyvinyl alcohol plastic

A technology of polyvinyl alcohol and plastics, applied in the field of preparation of polyvinyl alcohol plastics, can solve the problems of difficult production of polyvinyl alcohol plastics, expensive production equipment, low productivity, etc., and achieve good economic and social benefits, simple operation, The effect of the continuation of the process

Inactive Publication Date: 2020-10-23
XIAN HAORUI ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of difficult production of polyvinyl alcohol plastics, relatively expensive production equipment, low productivity and high energy consumption, the present invention provides a preparation method of polyvinyl alcohol plastics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of polyvinyl alcohol plastic, comprising the following steps:

[0018] (1) Prepare raw materials: 100 parts of polyvinyl alcohol, 5 parts of plasticizer, 5 parts of biodegradable polymer, 0.1 part of crosslinking agent, and 0.1 part of lubricant;

[0019] (2) Stir all raw materials to 100 degrees at high speed;

[0020] (3) Extrude and granulate through a twin-screw extrusion granulation unit, and the extrusion granulation temperature is 160 degrees.

[0021] The plasticizer is water and polyethylene glycol; the biodegradable polymer is polylactic acid; the crosslinking agent is boric acid, and the lubricant is glyceryl monostearate.

[0022] Stir all raw materials at high speed to 100 degrees, and extrude and granulate at 160 degrees.

Embodiment 2

[0024] A preparation method of polyvinyl alcohol plastic, comprising the following steps:

[0025] (1) Prepare raw materials: 100 parts of polyvinyl alcohol, 40 parts of plasticizer, 20 parts of biodegradable polymer, 5 parts of crosslinking agent, and 5 parts of lubricant;

[0026] (2) Stir all raw materials to 130 degrees at high speed;

[0027] (3) Extrude and granulate through the extrusion granulation unit, and the extrusion granulation temperature is 200 degrees.

[0028] The plasticizer is one or more of water, ethylene glycol, glycerin, propylene glycol, diethylene glycol or polyethylene glycol; the biodegradable polymer is polylactic acid and / or polycaprolactone; crosslinking The agent is one or more of boric acid, borax or boric acid derivatives, and the lubricant is one or more of glyceryl monostearate, stearic acid or low-molecular wax.

Embodiment 3

[0030] A preparation method of polyvinyl alcohol plastic, comprising the following steps:

[0031] (1) Prepare raw materials: 100 parts of polyvinyl alcohol, 20 parts of plasticizer, 15 parts of biodegradable polymer, 1 part of crosslinking agent, and 2 parts of lubricant;

[0032] (2) Stir all raw materials to 120 degrees at high speed;

[0033] (3) Extrude and granulate through the extrusion granulation unit, and the extrusion granulation temperature is 180 degrees.

[0034] The plasticizer is a mixture of glycerin, propylene glycol, diethylene glycol and polyethylene glycol; the biodegradable polymer is polycaprolactone; the cross-linking agent is borax, and the lubricant is low-molecular wax.

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Abstract

The invention relates to a preparation method and application of polyvinyl alcohol plastic. The preparation method comprises the following steps: preparing raw materials consisting of 100 parts of polyvinyl alcohol, 5-40 parts of a plasticizer, 5-20 parts of a biodegradable high-molecular polymer, 0.1-5 parts of a cross-linking agent and 0.1-5 parts of a lubricant; stirring all the raw materials at a high speed until a temperature is 100-130 DEG C; and carrying out extruding and granulating through an extruding and granulating unit, wherein an extruding and granulating temperature is 160-200 DEG C. The obtained product can be used for garbage bags, preservative films, seedling raising boxes, express packages, frozen food packages, soluble adhesive tapes, temporary water blocking materialsand the like. The method is low in cost and high in production efficiency, meets the requirements of vigorously developing circular economy and building a resource-saving and environment-friendly society in China, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of high molecular polymer applications, in particular to a preparation method and application of polyvinyl alcohol plastics. Background technique [0002] At present, people generally adopt polyvinyl alcohol aqueous solution to cast and dry polyvinyl alcohol film to produce polyvinyl alcohol film. This production process is difficult, the production equipment is relatively expensive, the productivity is low, and the energy consumption is large. Research on the technology of polyvinyl alcohol for thermoforming and processing into products is the goal pursued by people, but polyethylene (PVA) has a melting point above 200 degrees at different degrees of polymerization and alcoholysis, and it starts to change color when heated to above 100 °C in the air , embrittlement, when heated to 160-170 ° C, dehydration etherification loses water solubility, and when it exceeds 250 ° C, it becomes a polymer containing con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L67/04C08L71/02C08K13/02C08K3/38C08K5/053C08K5/103C08K5/06C08K5/09
CPCC08L29/04C08K2201/014C08K2003/387
Inventor 陈兴华田涛
Owner XIAN HAORUI ELECTRONICS TECH
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