Water-resistant polyvinyl alcohol (PVA) film composition as well as fusion preparation method thereof

A polyvinyl alcohol film and polyvinyl alcohol resin technology, which is applied in the field of polymer processing and modification, can solve the problems of difficult melt preparation, difficult melt processing and low degradation temperature of PVA film, and achieves ideal compatibility and plasticization. Good effect, the effect of reducing the melt processing temperature

Active Publication Date: 2011-11-09
CHANGZHOU BAIJIA NIANDAI FILM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] To sum up, it is currently difficult to realize the formation of polyvinyl alcohol film by melt processing. PVA has a high melting point and a low degradation temperature, and the higher the degree of alcoholysis, the higher the melting point, and the more difficult it is to melt process
Therefore, it is difficult to ideally melt the PVA film at room temperature and water resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Fully and evenly stir 7 parts of water, 15 parts of ethylene glycol, 5 parts of polyvinyl alcohol 1788, 5 parts of polyether polyol, 2 parts of stearic acid and 95 parts of matrix resin polyvinyl alcohol 1799 in a high-speed mixer. Exceeding 80°C; then set the temperature of the premixed material in the extruder at 140-220°C, and the screw speed is 150rpm, melt and extrude to granulate or prepare a film.

Embodiment 2

[0038] Mix 12 parts of water, 12 parts of ethylene glycol, 5 parts of polyvinyl alcohol 1788, 5 parts of polyether polyol, 2 parts of stearic acid and 95 parts of matrix resin polyvinyl alcohol 1799 in a high-speed mixer, and the stirring temperature should not exceed 80°C; then set the temperature of the premixed material in the extruder at 140-220°C, and the screw speed is 150rpm, and melt and extrude to granulate or prepare a film.

Embodiment 3

[0040] Mix 12 parts of water, 12 parts of caprolactam, 5 parts of polyvinyl alcohol 1788, 5 parts of polyether polyol, 2 parts of stearic acid and 95 parts of matrix resin polyvinyl alcohol 1799 in a high-speed mixer, and the stirring temperature does not exceed 80°C The temperature of the premixed material is set in the extruder at 140-220° C., and the screw speed is 150 rpm, and melted and extruded to granulate or prepare a film.

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PUM

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Abstract

The invention discloses a water-resistant polyvinyl alcohol (PVA) film composition which comprises the following components in parts by weight: 100 parts of polyvinyl alcohol resin, 10-90 parts (preferably 20-50 parts) of compound plasticizing agent and 1-5 parts of processing agent, wherein the compound plasticizing agent is prepared from small molecular and high molecular plasticizing agents through compounding according to a certain proportion. The invention further discloses a preparation method of the composition. The film prepared by the method has good mechanical property, high transparency and high barrier property; the defects that PVA is easily degraded and smelled during a fusion process and PVA cannot be prepared by fusion are overcome; and the film is formed by a plurality ofmanners such as blow molding, curtain coasting, rolling and the like.

Description

technical field [0001] The invention belongs to the technical field of a processing method for melt-processing polyvinyl alcohol (PVA) film and its preparation, and belongs to the field of polymer processing and modification. Background technique [0002] Polyvinyl alcohol is a polymer material that can be synthesized through non-petroleum routes. With the depletion of petroleum resources, its advantages will become increasingly apparent. Due to its structural characteristics, polyhydric groups and strong hydrogen bonds, it endows it with many excellent properties, and is widely used in coatings, adhesives, fibers, films and other industries. Polyvinyl alcohol film is a larger branch of polyvinyl alcohol products. Experts predict that the global average annual growth rate of PVA film will be 8%-10% in the next few years. [0003] Polyvinyl alcohol is an ideal film material. Compared with other films, it has biodegradability, high gas barrier properties, different degrees o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L71/00C08L75/04C08L23/08C08L71/08C08K5/053C08K5/09C08K5/3412C08K5/098C08K5/12
Inventor 茹正伟茹小伟陈弦
Owner CHANGZHOU BAIJIA NIANDAI FILM TECH CO LTD
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