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Thermoplastic polyvinyl alcohol-soapstone composite material and preparation method thereof

A kind of polyvinyl alcohol, composite material technology

Inactive Publication Date: 2012-07-04
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process route of this method is relatively complicated, and the products are limited to the preparation of containers, so the application is relatively limited

Method used

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  • Thermoplastic polyvinyl alcohol-soapstone composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 0.5 part of soapstone and 10 parts of water into a low-speed mixer, stir and mix at room temperature for 30 minutes, and then seal and place at room temperature for 1 hour; then add the above mixture, 100 parts of polyvinyl alcohol resin, and 30 parts of formamide , 0.5 part of fatty acid calcium, 1 part of citric acid. First, it is fully mixed by a high-speed stirring mixer at a stirring speed of 1000 rpm, sealed and placed for 48 hours, and then added to a screw extruder at 115° C. and a screw speed of 30 rpm for direct extrusion to obtain a thermoplastic polyvinyl alcohol-saponite composite material.

Embodiment 2

[0038] Add 10 parts of soapstone and 25 parts of water to a low-speed mixer, stir and mix at room temperature for 60 minutes, and then seal and place at room temperature for 1 hour; then add the above mixture, 150 parts of polyvinyl alcohol resin, and 60 parts of acetamide , 2 parts of fatty acid calcium, 10 parts of glutamic acid. First, it is fully mixed by a high-speed stirring mixer at a stirring speed of 2000 rpm, sealed and placed for 48 hours, and then added to a screw extruder at 140° C. and a screw speed of 80 rpm for direct extrusion to obtain a thermoplastic polyvinyl alcohol-saponite composite material.

Embodiment 3

[0040] Add 3 parts of soapstone and 10 parts of water to a low-speed mixer, stir and mix for 30 minutes at room temperature, and then seal and place at room temperature for 1 hour; then add the above mixture, 150 parts of polyvinyl alcohol resin, and 50 parts of formamide , 1 part of fatty acid calcium, 10 parts of urea. First, it is fully mixed by a high-speed stirring mixer at a stirring speed of 1500 rpm, sealed and placed for 48 hours, and then directly extruded into a screw extruder at 115°C and a screw speed of 60 rpm to obtain a polyvinyl alcohol-saponite composite material.

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Abstract

The invention discloses a thermoplastic polyvinyl alcohol-soapstone composite material and a preparation method thereof. The preparation method is characterized by comprising the following steps of: adding 0.5-10 parts of soapstone and 10-25 parts of water to a low-speed stirring mixer for stirring and mixing 30-60 minutes at a room temperature, and then hermetically placing for 1 hour at the room temperature; adding the mixture, 100-150 parts of polyvinyl alcohol resins, 30-60 parts of plasticizers, 0.5-2 parts of stabilizers and 1-10 parts of modifiers to a high-speed stirring mixer, stirring and mixing for 30-60 minutes at the room temperature and the stirring speed of 1000-2000rpm, and then hermetically placing for 48 hours at the room temperature; and adding the obtained mixture to ascrew extruder for directly extrusion and granulation at the extruding temperature of 115-140 DEG C and the screw rotating speed of 30-80rpm to prepare the thermoplastic polyvinyl alcohol-soapstone composite material. The composite material not only can realize thermoplastic processing, but also is improved on mechanical properties and water resistance, has the advantages of simple preparation process, convenience for operation, low cost and environmental protection, is beneficial to realizing industrialization, and expands the application field of polyvinyl alcohol.

Description

Technical field [0001] The invention relates to a thermoplastic polyvinyl alcohol-saponite composite material and a preparation method thereof, and belongs to the field of polymer materials. Background technique [0002] Under the severe situation of increasingly scarce petroleum resources and rising petroleum prices, the preparation of polyvinyl alcohol (PVA) composite materials from non-petroleum routes has outstanding significance. PVA is an environmentally friendly material that provides an effective way to solve the "white pollution" problem that is widespread in the world. At present, the application and research of PVA are mostly based on the solution method. This is due to the high degree of polymerization and alcoholysis of PVA. It contains a large number of hydroxyl groups on the flexible main chain, forms a large number of hydrogen bonds between and within molecules, and has many physical cross-linking points. The high density causes the melting temperature of PVA to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/04C08K13/02C08K3/34C08K5/098C08K5/092C08K5/17C08K5/21C08K3/22
Inventor 甄卫军卢灿辉
Owner SICHUAN UNIV
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