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Polyvinyl chloride paste resin and preparation method thereof

A technology of polyvinyl chloride paste resin and polyvinyl chloride paste, which is applied in the field of polyvinyl chloride paste resin and its preparation, can solve the problems of poor degassing performance of paste resin, many pinholes in produced products, and increased processing costs, and achieve degassing Good foam performance, high mechanical strength, fast plasticizing effect

Pending Publication Date: 2021-11-26
济宁中银电化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Paste resin with high paste viscosity will not only reduce the stability of the product between batches, but also increase the amount of plasticizer added, which in turn increases the processing cost and affects the mechanical properties and transparency of the product; paste resin with low paste viscosity has degassing performance Poor, there are many pinholes in the produced product, which affects the appearance and internal quality of the product

Method used

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  • Polyvinyl chloride paste resin and preparation method thereof
  • Polyvinyl chloride paste resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] PVC paste resin and one kind of preparation, a polyvinyl chloride paste resin composition is as follows: PVC 99.0-99.022%, 0.7-0.734% sodium lauryl sulfate, sodium metabisulfite 0.093-0.0938%, water 0.1 to 0.15 %, potassium persulfate, cupric chloride, ammonium bicarbonate, and a mixture of mercaptoethanol 0.000002-0.107%.

Embodiment 2

[0030] Polyvinyl chloride paste resin prepared as follows:

[0031] S1: Preparation of seed: added in the polymerization vessel desalinated water, desalted water to 100 mass: 0.0084 potassium persulfate, sodium metabisulfite and 0.092 PH regulator NH 3 -NH 4 HCO 3 Buffer solution was adjusted PH, PH value is adjusted to 7.8-8.4, stir;

[0032] The polymerization kettle was added under vacuum initiator 0.092-0.109 sodium metabisulphite solution, the autoclave to control the speed of stirring, the vinyl chloride monomer and the emulsifier sodium lauryl sulfate solution is added continuously uniform, the reaction is stopped after a certain time of vinyl chloride monomer at 45 ℃ after stirring for 1h stop body and the emulsifier sodium lauryl sulfate solution reaction, the whole reaction was continued for 7-10h, desalinated water ratio of vinyl chloride 1.1-1.3: 1; mass ratio of vinyl chloride with 148-150 emulsifier: 1, the product produced in the size range 0.2-0.65 microns vinyl po...

Embodiment 3

[0038] The first step: Preparation of seed

[0039] In a volume of 1 square polymerization vessel was added 525 kg of desalinated water, copper chloride, sodium lauryl sulfate solid trace, and 0.042kg of potassium persulfate PH adjusting agents, PH adjusted to 7.8, mix well;

[0040] The polymerization kettle was added under vacuum the initiator 0.46kg sodium metabisulfite solution, controlling the stirring speed in the autoclave, and the emulsifier-containing vinyl chloride monomer 390.5kg 2.75kg sodium lauryl sulfate solution was added to 24L uniform continuous reaction at 45 ℃ 5h stop sodium lauryl sulfate solution, then the reaction was stirred for 1h vinyl chloride monomer was stopped after 1h was added to stop the reaction, the whole reaction was continued for 7h.

[0041] Second step: Polymerization

[0042] In a volume of 1 square polymerization vessel was added 525 kg demineralized water, a solution of copper chloride, potassium persulfate 0.046kg, sodium lauryl sulfate a...

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Abstract

The invention discloses polyvinyl chloride paste resin and a preparation method thereof, and the polyvinyl chloride paste resin comprises the following components: 99.0%-99.022% of polyvinyl chloride, 0.7%-0.734% of lauryl sodium sulfate, 0.093%-0.0938% of sodium pyrosulfite, 0.1%-0.15% of water, 0.000002%-0.107% of a mixture of potassium persulfate, polyoxyethylene octyl phenol ether and sodium bicarbonate, and the balance of water. Desalted water, an activating agent, an emulsifying agent and the like are added into a reaction kettle, a certain amount of initiator sodium pyrosulfite and a vinyl chloride monomer are added in a vacuum environment, the temperature in the kettle is controlled, and stirring and reacting area carried out for a period of time to prepare a seed emulsion; secondly, desalted water, an activating agent, an emulsifying agent and the like are added into a polymerization kettle, quantitative initiator sodium pyrosulfite, seeds and vinyl chloride monomers are added in a vacuum environment, the temperature in the kettle is controlled, stirring is conducted, and a polymerization reaction is conducted. The resin product disclosed by the invention has the characteristics of high polymerization degree, low paste viscosity, high plasticizing speed, good transparency and high defoaming performance, and a product prepared from the paste resin is high in transparency and high in mechanical strength.

Description

Technical field [0001] The present invention relates to the technical field of polymer materials, particularly resin and preparation method as a PVC paste. Background technique [0002] PVC paste resin is generally prepared from an emulsion and micro-suspension process, it is a polyvinyl chloride resin. Widely used in impregnation, rotational molding, coating, foam and other processing, the main raw material for the production of vinyl flooring, wallpaper, disposable examination gloves PVC, tarpaulin and the like. [0003] The high viscosity paste paste resin products will not only reduce the stability between batches, the amount of plasticizer will increase, thus increasing processing cost, affecting the mechanical properties and transparency of the article; lower degassing paste resin paste viscosity properties poor production of products more than a pinhole, affect the appearance and the intrinsic quality of the product. [0004] Paste resin particle distribution of the viscos...

Claims

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Application Information

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IPC IPC(8): C08F114/06C08F2/26C08F4/40C08F2/38
CPCC08F114/06C08F2/26C08F4/40C08F2/38
Inventor 张建君刘书霞田鹏郭孝伟
Owner 济宁中银电化有限公司
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