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Material for preparing ultralow molecular migrating polyvinl chloride elastomer alloy

A polyvinyl chloride and ultra-low molecular technology, which is applied in the field of ultra-low molecular migration polyvinyl chloride elastomer alloy special material and its preparation field, can solve the problems of poor durability, high mobility, poor elasticity of elastomer, etc. , the effect of simplifying the preparation process and improving the migration resistance

Inactive Publication Date: 2005-08-24
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the plasticizing system currently used in traditional PVC elastomers mainly uses phthalate plasticizers, which have defects such as large migration and poor durability. The long-term slow migration of plasticizers not only easily pollutes refrigerators and freezers. food, and it will also make the elasticity of the elastomer worse and worse, which directly affects the quality and service life of the household appliances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0020] Using polyvinyl chloride as the base material, the component content (parts by weight) of each composition is listed in Table 1.

[0021] (1) Put each component with the content stated in the following table in a high-speed mixer, mix for 20-30 minutes, and rotate at a speed of 600r / min.

[0022] (2) Put the mixed material into the hopper of the single-screw extruder, the temperature of each section of the screw is 130-150°C, the screw speed is 300r / min, the material is pelletized, air-dried, and cooled to make a special material, Then make standard splines for performance testing, and the test results are listed in Table 2.

[0023] serial number

[0024] Above-mentioned plasticizer A is propylene glycol adipate polyester, molecular weight is 5000.

[0025] The above-mentioned plasticizer B is dioctyl phthalate.

[0026] The above-mentioned composite stabilizer is a 1:1 composite of zinc stearate and calcium stearate.

[0027] The above-mentioned filler is...

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PUM

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Abstract

A material for preparing ultralow-molecular polyvinyl chloride elastomer alloy is proportionally prepared from polyvinyl chloride, plasticizers A and B, composite stabilizer, filler and lubricant through high-speed mixing, extruding out, cutting to become particles, drying and cooling.

Description

Technical field: [0001] The invention relates to a special material for ultra-low molecular migration polyvinyl chloride elastomer alloy and a preparation method thereof. Background technique: [0002] Polyvinyl chloride (PVC) is a general-purpose plastic with excellent cost performance. PVC elastomer has the advantages of large elongation at break, smooth and delicate surface, good hand feeling, good elasticity, easy welding, and aging resistance. It is widely used in Making sealing components in household appliances, automobiles, building doors and windows and in the medical field. But along with the raising of people's living standard, people are more and more higher to the hygienic performance requirement of each part of food utensils such as household appliances especially refrigerator, freezer, dishwasher. However, the plasticizing system currently used in traditional PVC elastomers mainly uses phthalate plasticizers, which have defects such as large migration and poo...

Claims

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Application Information

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IPC IPC(8): B29C48/395C08K5/11C08L27/06
Inventor 李荣勋李超芹李伟黄兆阁孙文强刘波张明连
Owner QINGDAO UNIV OF SCI & TECH