A kind of high stability polyvinyl chloride recovery emulsion and preparation method thereof

A polyvinyl chloride, high-stability technology, applied in the field of polymer material modification, can solve the problems of easy delamination, low stability of PVC emulsion, slow coagulation speed, etc., to change the dispersion performance, break through the technical bottleneck, and expand the application range effect

Inactive Publication Date: 2017-04-12
天津市铭仁化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared PVC resins are usually paste resins. Although the paste resins are widely used in the market because of their higher molecular weight and finer particles, they are used in some special industrial applications (such as in rubber emulsions). Modification, impregnation on the surface of military tents, etc.) are relatively difficult, and PVC emulsion is required in the process of synthesis and modification, but there is a phenomenon of low stability and easy layering of PVC emulsion, so there is an urgent need for a slow coagulation speed on the market. PVC emulsion with good dispersibility

Method used

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  • A kind of high stability polyvinyl chloride recovery emulsion and preparation method thereof
  • A kind of high stability polyvinyl chloride recovery emulsion and preparation method thereof
  • A kind of high stability polyvinyl chloride recovery emulsion and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A high stability polyvinyl chloride recovery emulsion, comprising the following components in parts by weight:

[0025]

[0026] The preparation method of above-mentioned high stability polyvinyl chloride recovery emulsion is:

[0027] (1) Dilution of emulsifier: heat 95 kg of water to 80°C, add sodium lauryl sulfate and stir for 10 minutes to form an emulsion with a mass fraction of 5%;

[0028] (2) Resin emulsification: Take 65 kg of the prepared 5% emulsion, add PVC paste resin, and emulsify with a high-shear emulsifier at a temperature of 70°C for 30 minutes to obtain a polyvinyl chloride emulsion;

[0029] (3) Emulsion dispersion: Add nonylphenol polyoxyethylene ether and sodium dodecylbenzenesulfonate to the emulsified polyvinyl chloride emulsion and stir for 10 minutes to obtain a high-stable polyvinyl chloride recovery emulsion. The total solid mass fraction of the polyvinyl chloride emulsion is 35%, and there is no coagulation and delamination after standin...

Embodiment 2

[0031] A high stability polyvinyl chloride recovery emulsion, comprising the following components in parts by weight:

[0032]

[0033]

[0034] The preparation method of above-mentioned high stability polyvinyl chloride recovery emulsion is:

[0035] (1) Dilution of emulsifier: heat 180 kg of water to 80°C, add sodium lauryl sulfate and stir for 10 minutes to form an emulsion with a mass fraction of 5%;

[0036] (2) Resin emulsification: take 80 kg of the prepared 5% emulsion, add PVC paste resin, emulsify at a temperature of 70°C with a high-shear emulsifier for 30 minutes, and obtain a polyvinyl chloride emulsion;

[0037] (3) Emulsion dispersion: Add nonylphenol polyoxyethylene ether and sodium dodecylbenzenesulfonate to the emulsified polyvinyl chloride emulsion and stir for 10 minutes to obtain a high-stable polyvinyl chloride recovery emulsion. The total solid mass fraction of the polyvinyl chloride emulsion is 35%, and there is no coagulation and delamination af...

Embodiment 3

[0039] A high stability polyvinyl chloride recovery emulsion, comprising the following components in parts by weight:

[0040]

[0041] The preparation method of above-mentioned high stability polyvinyl chloride recovery emulsion is:

[0042] (1) Dilution of emulsifier: heat 150 kg of water to 80°C, add sodium lauryl sulfate and stir for 10 minutes to form an emulsion with a mass fraction of 5%;

[0043] (2) Resin emulsification: Take 45 kg of the prepared 5% emulsion, add PVC paste resin, and emulsify with a high-shear emulsifier at a temperature of 70°C for 30 minutes to obtain a polyvinyl chloride emulsion;

[0044] (3) Emulsion dispersion: Add nonylphenol polyoxyethylene ether and sodium dodecylbenzenesulfonate to the emulsified polyvinyl chloride emulsion and stir for 10 minutes to obtain a high-stable polyvinyl chloride recovery emulsion. The total solid mass fraction of the polyvinyl chloride emulsion is 35%, and there is no coagulation and delamination after standi...

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PUM

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Abstract

The invention relates to a high stability polyvinyl chloride reconstituted emulsion and a preparation method thereof. The high stability polyvinyl chloride reconstituted emulsion comprises, by weight, 30-40kg of PVC pasty resin, 5-10kg of an emulsifier and 1-2kg of a dispersant. The suitable emulsifier and the dispersant are selected to design a high stability emulsifying system, and a temperature control and high dispersion high shearing machine is used to emulsify, so the dispersion performance of the pasty resin in the emulsion is changed, the problems of molecular coacervation and layering instability of emulsification reconstituted pasty resin are solved, and the application range of the above obtained product is widened; and the method is convenient and simple, the emulsion in any proportion can be prepared as needed, a technical bottleneck that solid resin cannot be used in some fields is broken, and the application range of the pasty resin is enlarged.

Description

technical field [0001] The invention belongs to the field of modification of polymer materials, and relates to a paste resin, in particular to a high-stable polyvinyl chloride reconstituted emulsion and a preparation method thereof. Background technique [0002] Polyvinyl chloride, referred to as PVC (Polyvinyl chloride polymer=PVC molecular structure), is a thermoplastic resin polymerized by vinyl chloride under the action of an initiator. It is a homopolymer of vinyl chloride. PVC is very hard and has poor solubility. It can only be dissolved in a few solvents such as cyclohexanone, dichloroethane and tetrahydrofuran. It is stable to organic and inorganic acids, alkalis and salts. The chemical stability increases with the use of temperature. And lower. PVC has the characteristics of flame retardant, acid and alkali resistance, anti-microbial, wear-resistant and has good warmth retention and elasticity. According to the polymerization method, polyvinyl chloride can be di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L27/06
Inventor 王刚
Owner 天津市铭仁化工科技有限公司
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