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Plasticized polyvinyl chloride material and its preparation

A technology of polyvinyl chloride and ethylene, which is applied to the preparation method and application field of the material, and can solve the problems of low plasticization efficiency and the like

Active Publication Date: 2017-05-10
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest feature of EVACO as a soft PVC modifier is that it can block the migration and extraction of low-molecular plasticizers, but its plasticizing efficiency is not as good as that of low-molecular ester plasticizers

Method used

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  • Plasticized polyvinyl chloride material and its preparation
  • Plasticized polyvinyl chloride material and its preparation
  • Plasticized polyvinyl chloride material and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] 25 parts of average degree of polymerization is 1050 low degree of polymerization PVC resin, 75 parts of high degree of polymerization PVC resin of 2400 degree of polymerization and 1.2 parts of calcium-zinc composite stabilizer (106-8 type from Shanghai Yongyan Chemical Technology Co., Ltd. ) into the high-speed mixer first, start stirring, the paddle speed is 950rpm, the temperature rises to 90°C, maintain the speed and temperature, and then add 45 parts of DEHCH plasticizer, 5 parts of epoxy soybean oil, and 0.4 parts of phosphorous acid Tris(nonylphenyl ester) and 0.3 parts of benzyl silicone oil were stirred and mixed for 15 minutes, and then transferred to a two-roller mixer to be mixed with 10 parts of Elvaloy741. The spacing is 2 minutes, the rotating speed of the roller is 55 rpm, and the mixing time is 15 minutes, and then the blend obtained by mixing is extruded, granulated, and injected to make samples for testing.

[0086] The test results are shown in Tabl...

Embodiment 2

[0088] Repeat Example 1, the difference is: the average degree of polymerization is 1050 low polymerization degree of PVC resin into 37 parts, the average degree of polymerization of 2400 high degree of polymerization PVC resin into 63 parts.

[0089] The test results are shown in Table 1 and Table 2.

Embodiment 3

[0091]Repeat Example 1, the difference is: PVC with a high degree of polymerization is replaced by PVC with an average degree of polymerization of 2100.

[0092] The test results are shown in Table 1 and Table 2.

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Abstract

The present invention relates to a novel and non-toxic plasticized polyvinyl chloride material, which comprises A) 100 parts by weight of a PVC resin, B) 20-80 parts by weight of one or a plurality of main plasticizers selected from cyclohexane-1,2-diformate diisooctyl, cyclohexane-1,2-diformate diisononyl, tributyl citrate and acetyl tributyl citrate, and C) 5-20 parts by weight of an ethylene-vinyl acetate-carbonyl copolymer adopted as an auxiliary plasticizer. The material has characteristics of no toxicity, environmental protection, no plasticizer emigration phenomenon, good transparency, suitable processing temperature and excellent comprehensive mechanical property, and can be widely used in the field of food packaging, medical devices and the like. The present invention further relates to a preparation method of the plasticized polyvinyl chloride material, and an application of the plasticized polyvinyl chloride material in food packaging and medical devices.

Description

technical field [0001] The invention relates to a plasticized polyvinyl chloride material, which is non-toxic and can be widely used in food packaging, medical equipment and other fields, especially for food packaging bags and films, transfusion tubes, transfusion bags, blood transfusion vessels and blood transfusion bags. The invention also relates to the preparation method and application of said material. Background technique [0002] Polyvinyl chloride (hereinafter sometimes referred to as PVC) materials are widely used in medical equipment, mainly because the polyvinyl chloride materials themselves have good physical properties. Specifically, these physical properties include: the ease of processing of PVC materials and the good compatibility of such materials with intravenous fluids and blood. The inherent properties such as hardness and flexibility of pure PVC materials can be improved by adding plasticizers. The role of the plasticizer is to increase the flexibilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/08C08L83/04C08K5/11C08K5/1515C08K5/526
Inventor 丁雪佳欧远辉张龙王国胜吴勇振魏永飞顿庆涛
Owner BEIJING UNIV OF CHEM TECH
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