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Application of polyvinyl alcohol material, material for straw, preparation method of material and straw

A technology of polyvinyl alcohol and polyethylene glycol, which is applied in the field of straw materials, can solve the problems of straw materials that are difficult to decompose, environment, and soil pollution, and achieve the effects of short production cycle, high transparency, and strong controllability

Pending Publication Date: 2022-04-22
POLYE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The third object of the present invention is to provide a method for preparing a straw material, which is simple, operable, and easy to implement. The prepared straw material can alleviate the difficulty in decomposing the straw material in the prior art, causing environmental and soil pollution The problem

Method used

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  • Application of polyvinyl alcohol material, material for straw, preparation method of material and straw
  • Application of polyvinyl alcohol material, material for straw, preparation method of material and straw

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preparation example Construction

[0098] In a third aspect, in at least one embodiment, a method for preparing a straw material is provided, comprising the following steps:

[0099] The polyvinyl alcohol, the plasticizer and the processing aid are uniformly mixed at first, and then extruded and granulated to obtain the straw material.

[0100] The preparation method of the material for straws of the present invention is simple in operation and easy to implement. After fully mixing the raw materials uniformly, the materials or products for straws can be obtained through one-time melt extrusion, granulation or direct molding, which has strong controllability and is easy to produce. The cycle is short, and it is easy to realize industrialization.

[0101] In a preferred embodiment, polyvinyl alcohol is first added to the high-speed mixer, then the plasticizer and processing aid are added to the high-speed mixer, stirred, and discharged; then transferred to the twin-screw extruder, performing extrusion granulatio...

Embodiment 1

[0113] A material for straws, mainly prepared from the following raw materials in parts by weight:

[0114] Polyvinyl alcohol II (polymerization degree 3500, alcoholysis degree 99%, average particle size 100 μm) 60 parts, polyvinyl alcohol Ⅰ (polymerization degree 500, alcoholysis degree 99%, average particle size 100 μm) 40 parts, sorbitol 8 parts , 1 part of glycerol and 1 part of polyethylene glycol (polyethylene glycol 400) with a molecular weight of 400.

[0115] The preparation method of above-mentioned straw material, comprises the following steps:

[0116] Weigh 60kg polyvinyl alcohol II (polymerization degree 3500, alcoholysis degree 99%, average particle diameter 100μm) and 40kg polyvinyl alcohol I (polymerization degree 500, alcoholysis degree 99%, average particle diameter 100μm) and add to the high-speed mixer Mix at medium and high speed for 2 minutes, then slowly add 8kg of sorbitol, 14kg of glycerol, and 1kg of polyethylene glycol 400. After all are added, con...

Embodiment 2

[0119] A material for straws, mainly prepared from the following raw materials in parts by weight:

[0120] Polyvinyl alcohol II (polymerization degree 2000, alcoholysis degree 99%, average particle size 500 μm) 70 parts, polyvinyl alcohol Ⅰ (polymerization degree 800, alcoholysis degree 95%, average particle size 500 μm) 30 parts, sorbitol 4 parts , 11 parts of glycerol, 7 parts of propylene glycol and 3 parts of polyethylene glycol (polyethylene glycol 1000) with a molecular weight of 1000.

[0121] The preparation method of above-mentioned straw material, comprises the following steps:

[0122] Weigh 70kg polyvinyl alcohol II (polymerization degree 2000, alcoholysis degree 99%, average particle diameter 500μm) and 30kg polyvinyl alcohol Ⅰ (polymerization degree 800, alcoholysis degree 95%, average particle diameter 500μm) and add them into the high-speed mixer Mix at medium and high speed for 2 minutes, then slowly add 11kg of glycerin, 7kg of propylene glycol, 4kg of sorb...

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Abstract

The invention belongs to the technical field of straw materials, and relates to application of a polyvinyl alcohol material, a straw material, a preparation method of the straw material and a straw. The invention provides application of a polyvinyl alcohol material in preparation of a straw. The material for the straw is mainly prepared from the following raw materials in parts by weight: 100-110 parts of polyvinyl alcohol, 6-30 parts of a plasticizer and 0.5-6 parts of a processing aid. The material has good physical properties, is easy to degrade and can relieve the pollution problem to soil and environment, the straw made of the straw material can be directly discarded in the nature after being used, can be degraded in the soil and can also be degraded after being dissolved in water, resources, the soil, the environment and the like cannot be affected, and the straw material is worthy of popularization and application. And the method has remarkable environmental protection benefits and application values.

Description

technical field [0001] The invention belongs to the technical field of straw materials, and in particular relates to the application of a polyvinyl alcohol material, a material for straws, a preparation method thereof, and a straw. Background technique [0002] Straw is a common product in people's daily life. It is generally a disposable plastic product. It can be divided into food straws, medical straws and scientific research and experiment straws. Taking the food straw as an example, it is generally a cylindrical, hollow plastic product, which can be used to suck various drinks. At present, with the improvement of people's living standards, various drinks are rich and colorful, and food straws are used as a supporting tool for catering, and the market demand is very large. According to incomplete statistics, the plastic straws used in the world every year are more than 500,000 tons. . [0003] The current disposable plastic straws are mainly made of polyethylene (PE), ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L71/02C08K5/053A47G21/18
CPCC08L29/04A47G21/18C08L2205/025C08L2201/06C08K2201/014C08L71/02C08K5/053
Inventor 李玲玉
Owner POLYE MATERIALS CO LTD
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