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PVA (polyvinyl alcohol) composite plastic

A composite plastic and double-material technology, which is applied in the direction of synthetic resin layered products, layered products, chemical instruments and methods, etc., can solve the problems of poor strength and flexibility, limit the scope of application, etc., and achieve good mechanical strength and flexibility Sexual, easy to carry effect

Active Publication Date: 2018-08-21
SIBIKANG XIAMEN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, because PVA is too soft, its strength and flexibility are not good, thus limiting the scope of its application.

Method used

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  • PVA (polyvinyl alcohol) composite plastic
  • PVA (polyvinyl alcohol) composite plastic
  • PVA (polyvinyl alcohol) composite plastic

Examples

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Effect test

Embodiment 1

[0042] Example 1: A PVA composite plastic, tubular, such as figure 1 As shown, it includes a first layer 1 (outside) and a second layer 2 (inside), while the first layer 1 is a PVC layer, and the second layer 2 is a PVA layer, which is made by co-extrusion. The density of the PVA layer is 1.2 g / cm 3 And the PVC layer is wrapped on the outside of the PVA layer, wherein the ratio of the thickness of the PVC layer to the thickness of the PVA layer is 3:7, and the PVA layer accounts for 80% of the total weight of the PVA layer and the PVC layer.

[0043] Among them, during the preparation of the PVC layer, the temperature in the first zone of the two-material extruder is 170°C, the temperature in the second zone is 175°C, the temperature in the third zone is 180°C, and the temperature in the fourth zone is 180°C; the two-material extruder The speed of the main machine is 15r / s, the feeding speed is 11r / s, and the PVC layer is obtained by extrusion. The PVA layer is obtained by prepar...

Embodiment 2

[0044] Example 2: A PVA composite plastic. The difference from Example 1 is that the density of the PVA layer is 1.8g / cm 3 .

Embodiment 3

[0045] Example 3: A PVA composite plastic, the difference from Example 1 is that the density of the PVA layer is 2.4g / cm 3 , The ratio of the thickness of the PVC layer to the thickness of the PVA layer is 5:5.

[0046] Among them, during the preparation of the PVC layer, the temperature in the first zone of the two-material extruder is 175°C, the temperature in the second zone is 180°C, the temperature in the third zone is 183°C, and the temperature in the fourth zone is 178°C; the two-material extruder The rotation speed of the main machine is 18r / s, and the feeding speed is 13r / s, extruding to obtain the PVC layer. The PVA layer is obtained by preparing PVA raw materials through a two-material extruder. The PVA raw materials are dried before being prepared, the temperature of the drying treatment is 75° C., and the time of the drying treatment is 5 hours. When the PVA raw material is processed in a two-material extruder, the temperature in the first zone is 185°C, the temperat...

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Abstract

The invention discloses PVA (polyvinyl alcohol) composite plastic and belongs to the technical field of polymers. The PVA composite plastic comprises a first layer and a second layer, wherein the first layer comprises at least one of a PVC layer, a PET layer, a POF layer, a TPU layer, a PE layer, a PS layer, a PC layer, an ABS layer, a PU layer, a PA layer, a TPE layer and a TPR layer; the secondlayer is a PVA layer; the first layer and the second layer are prepared with co-extrusion molding; the ratio of the thickness of the first layer to the thickness of the second layer is 3-8:2-7; the density of the second layer is 1.2-2.4 g / cm<3>; the second layer accounts for 20%-80% of the total weight of the first layer and the second layer. The PVA composite plastic has the advantages of being higher in strength, better in flexibility and safe and harmless to human health.

Description

Technical field [0001] The invention relates to the technical field of high molecular polymers, more specifically, it relates to a PVA composite plastic. Background technique [0002] Polyvinyl alcohol (PVA) is a polymer with properties between plastics and rubbers. Polyvinyl alcohol has better adhesion, film flexibility, smoothness, oil resistance, solvent resistance, and gas barrier properties. Polyvinyl alcohol is hygienic, non-toxic and biodegradable under certain conditions. Polyvinyl alcohol is widely used in textile, food, medicine, construction, wood processing, papermaking, printing, agriculture and other industries. Among them, medical grade polyvinyl alcohol is safe, non-toxic, non-irritating, non-sensitizing, non-cytotoxic, and has good biocompatibility. It is one of the ideal materials for preparing medical equipment. [0003] However, because PVA is too soft, its strength and flexibility are not good, which limits its scope of application. Therefore, a plastic with ...

Claims

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Application Information

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IPC IPC(8): B32B7/08C08L29/04C08K13/02C08K3/16C08K5/21B32B27/30B32B27/08
CPCB32B7/08B32B27/08B32B27/306C08K3/16C08K5/21C08K13/02C08K2003/162C08L2203/18C08L29/04
Inventor 陈绍永
Owner SIBIKANG XIAMEN NEW MATERIALS CO LTD
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