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Biodegradable high-temperature water-soluble colored PVA film and preparation method thereof

A high-temperature water-soluble and biodegradable technology, applied in the field of biodegradable materials, can solve the problems of difficult film formation, PVA decomposition temperature and melting temperature are similar, and achieve the effect of simple equipment, large-scale production, and environmental protection requirements.

Inactive Publication Date: 2021-06-11
BEIJING YISIDE LOGISTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention not only solves the problem in the prior art that the decomposition temperature and melting temperature of PVA are close to make it difficult to form a film due to the polyhydroxyl structure of PVA, but also provides a method for directly preparing non-natural color PVA film

Method used

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  • Biodegradable high-temperature water-soluble colored PVA film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The parts by weight of the processing raw materials of the biodegradable high-temperature water-soluble colored PVA film are as follows:

[0051] 85 parts of PVA1799, 5 parts of glycerin, 5 parts of polyethylene glycol, 1 part of phthalocyanine blue, 0.01 part of aluminate coupling agent, 0.01 part of titanate coupling agent, 1 part of organic tin heat stabilizer, anti 1.48 parts of oxygen agent 1010, 0.5 parts of antioxidant 168, and 1 part of pentaerythritol stearate.

[0052] The preparation steps of biodegradable high-temperature water-soluble colored PVA film are as follows:

[0053] S1. Mix and modify the PVA with the formulated amount of glycerol and polyethylene glycol, and stir at 40-80°C for 5 minutes to pre-plasticize the PVA;

[0054] S2. Add the formulated amount of organotin heat stabilizer, antioxidant 1010, antioxidant 168, and pentaerythritol stearate to the material in step S1, stir at 80°C for 10 minutes, further plasticize, and then add phthalocyani...

Embodiment 2

[0058] The parts by weight of the processing raw materials of the biodegradable high-temperature water-soluble colored PVA film are as follows:

[0059] 75 parts of PVA2099, 14 parts of sorbitol, 5 parts of polyethylene glycol, 1 part of titanium dioxide, 0.02 parts of titanate coupling agent, 1 part of rare earth heat stabilizer, 1 part of antioxidant 697, 1 part of antioxidant 1024 1.98 part, 1 part of pentaerythritol stearate.

[0060] A biodegradable high-temperature water-soluble colored PVA film S2 was prepared using the same preparation method as in Example 1 above.

Embodiment 3

[0062] The parts by weight of the processing raw materials of the biodegradable high-temperature water-soluble colored PVA film are as follows:

[0063] 80 parts of PVA2299, 10 parts of glycerin, 5 parts of propylene glycol, 0.8 parts of carbon black, 0.01 parts of titanate coupling agent, 1 part of sorbitan stearate, 0.89 parts of antioxidant DLTP, antioxidant 1024 1.3 parts, 1 part of erucamide.

[0064] The biodegradable high-temperature water-soluble colored PVA film S3 was prepared by the same preparation method as in the above-mentioned Example 1.

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Abstract

The invention discloses a biodegradable high-temperature water-soluble colored PVA film, wherein the biodegradable high-temperature water-soluble colored PVA film comprises the raw materials: PVA, a plasticizer, a pigment, a surface treating agent and a processing aid, and is a colored PVA film which is not dissolved at normal temperature and is prepared by carrying out dry melt extrusion on a melt plasticized and modified PVA material. The high-temperature water-soluble colored PVA film prepared by the method provided by the invention not only overcomes the problem that the high-temperature water-soluble PVA raw material is easy to decompose and carbonize in the thermoplastic processing process, but also directly endows the PVA film with colorful colors. Compared with solution casting film forming, the method is simple in process, low in cost, insoluble at normal temperature and colored, and is more beneficial to industrial production of blow molding of PVA materials.

Description

technical field [0001] The invention relates to the field of biodegradable materials, in particular to a biodegradable high-temperature water-soluble colored PVA film and a preparation method thereof. Background technique [0002] Polyvinyl alcohol (PVA) not only has the properties of traditional plastics, but also can be degraded in water at different temperatures or under natural conditions. The final products after degradation are carbon dioxide and water. It is a completely degradable environmental protection material and can be used in the pharmaceutical industry and agriculture. Production, food industry, environmental protection and many other fields. Developed countries in Europe and the United States have successfully used it in the pharmaceutical and food packaging industries. [0003] PVA has good film-forming properties due to the large number of hydroxyl groups in its molecular chain. In the production process of PVA film, the industrial production basically a...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L29/04C08L71/02C08K5/053C08K3/04C08K3/22C08K5/17C08K5/00C08K13/02
CPCC08J5/18C08J2329/04C08J2471/02C08K5/053C08K3/04C08K2003/2241C08K5/17C08K5/0091C08K13/02
Inventor 常江
Owner BEIJING YISIDE LOGISTICS TECH
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