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Low-odor low-volatility polyvinyl chloride material and preparation method thereof

A polyvinyl chloride, low-volatility technology, applied in the field of low-odor and low-volatility polyvinyl chloride materials and preparations, can solve the problems of high cost and easy precipitation, and achieve the effect of stable quality, uniform color and good appearance

Inactive Publication Date: 2021-05-11
浙江天原医用材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method is costly, and adopts benzene plasticizer, easy to separate out

Method used

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  • Low-odor low-volatility polyvinyl chloride material and preparation method thereof
  • Low-odor low-volatility polyvinyl chloride material and preparation method thereof
  • Low-odor low-volatility polyvinyl chloride material and preparation method thereof

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preparation example Construction

[0021] The preparation of a low-odor and low-volatility polyvinyl chloride material comprises the following steps:

[0022] (1) Preparation of epoxidized soybean oil: react epoxidized soybean oil, acrylic acid, and tetramethylammonium chloride at 120° C. for 60 minutes in a mass ratio of 60:30:0.5;

[0023] (2) Preparation of heat stabilizer: calcium stearate and zinc stearate are mixed by mass ratio 50:50;

[0024] (3) Preparation of low-odor and low-volatility polyvinyl chloride material, PVC resin powder and epoxidized soybean oil are placed in the mixer and stirred and mixed for 20min, then add environment-friendly plasticizer, heat stabilizer, lubricant and deodorant, Raise the temperature to 120°C, stir and react for 3 hours, and then put it into a twin-screw extruder at a temperature of 150°C for extrusion, granulation and molding.

Embodiment 1-7

[0026] The parts by weight of the raw materials used in each embodiment are shown in Table 1 below:

[0027] Table 1, the amount of each component is in kg

[0028]

[0029]

Embodiment 8

[0036] The preparation of a low-odor and low-volatility polyvinyl chloride material comprises the following steps:

[0037] (1) Preparation of epoxidized soybean oil: react epoxidized soybean oil, acrylic acid, and tetramethylammonium chloride at 110° C. for 120 minutes in a mass ratio of 60:20:0.1;

[0038] (2) preparation of heat stabilizer: calcium stearate and zinc stearate are mixed by mass ratio 60:40;

[0039] (3) Preparation of low-odor and low-volatility polyvinyl chloride material, put 100 parts of PVC resin powder and 5 parts of epoxy soybean oil into the mixer and mix for 10 minutes, then add 30 parts of environmentally friendly plasticizer DINCH and 0.1 part of heat stabilizer , Lubricant food hygiene grade stearic acid 0.2 and deodorant sodium styrene sulfonate 0.5 part, heat up to 100°C, stir for 2 hours, then put into twin-screw extruder, extrude at 130°C, granulate and shape .

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Abstract

The invention relates to a low-odor low-volatility polyvinyl chloride material and a preparation method thereof. The low-odor low-volatility polyvinyl chloride material comprises the following components in parts by weight: 100 parts of PVC resin powder, 30-50 parts of an environment-friendly plasticizer, 5-10 parts of epoxidized soybean oil, 0.1-0.5 part of a heat stabilizer, 0.2-0.6 part of a lubricant and 0.5-5 parts of a deodorant. The PVC resin powder and the epoxidized soybean oil are placed in a mixing machine to be stirred and mixed for 10-30 min, then the environment-friendly plasticizer, the heat stabilizer, the lubricant and the deodorant are added, the temperature is increased to 100-150 DEG C, stirring reaction is conducted for 2-4 h, then the mixture is put into a double-screw extruder to be extruded, and molding is conducted after granulation. Compared with the prior art, the PVC material obtained by the invention has the advantages of environmental protection, low precipitation, low odor, low volatilization and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a low-odor and low-volatility polyvinyl chloride material and a preparation method thereof. Background technique [0002] Medical PVC is also called medical plastic. It has good physical and mechanical properties and chemical stability. It is more suitable for use in the medical field. The product is stable and safe. The industry has attracted much attention for its high added value, high growth rate and broad market potential. For a long time, the precipitation of plasticizers and additives in PVC products has been a major problem. In terms of medical blood transfusion (liquid), the contamination of blood and medicinal liquid will also pose varying degrees of threat to human health. [0003] Patent CN108659369A discloses a low-odor medical PVC composition and its preparation method. The composition in parts by weight is: 100 parts of polyvinyl chloride resi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L91/00C08K5/098C08K5/12B29B9/06
CPCC08L27/06B29B9/06C08L2203/02
Inventor 路中伟吴维新严凤娇王静雅
Owner 浙江天原医用材料有限公司
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