Method for preparing thermoplastic polymer aqueous dispersion

A thermoplastic polymer and dispersion technology, used in chemical instruments and methods, layered products, synthetic resin layered products, etc. Wide application and other issues, to achieve the effect of promoting development, low production cost, and environmental protection in the preparation process

Inactive Publication Date: 2014-03-05
南京彤天广元高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solution impregnation technology has not become the mainstream technology due to the use of more solvents; the powder impregnation technology has not been widely used due to the poor impregnation effect; Melting shrinkage changes its original good dispersibility, and under pressure, the heat transfer of mixed fiber yarn becomes a problem, so it has not been widely used
The current mainstream technology is melt impregnation technology, which has the defects of high viscosity of polymer melt and low impregnation efficiency.

Method used

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  • Method for preparing thermoplastic polymer aqueous dispersion
  • Method for preparing thermoplastic polymer aqueous dispersion
  • Method for preparing thermoplastic polymer aqueous dispersion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The raw material of thermoplastic polymer aqueous dispersion comprises following components:

[0035] 100 grams of polypropylene wax Nanjing Tianshi Experimental Powder Co., Ltd. PPW0902 (melting point: 145 ° C, particle size: D50: 10 microns)

[0036] 2.5g castor oil polyoxyethylene ether EL-20 Jiangsu Haian Petrochemical Factory

[0037] 3 grams of allyl polyoxyethylene ether APEG-1000 Jiangsu Haian Petrochemical Factory

[0038] 10 g methyl methacrylate

[0039] 10 g dibutyl maleate

[0040] 0.2 g dibenzoyl peroxide

[0041] 0.2 g azobisisobutyronitrile

[0042] 200 g water

[0043] Stir the above materials in a stirred reaction bottle for 1 hour, then raise the temperature to 95°C for 5 hours, cool down to 45°C, and grind the materials in a disc grinder for 5 hours to obtain the finished product.

Embodiment 2

[0049] The raw material of thermoplastic polymer aqueous dispersion comprises following components:

[0050] 100g polypropylene powder (polypropylene K9927 melt index: 27.0g / 10min D50: 13 microns)

[0051] 8 grams castor oil polyoxyethylene ether EL-40 Jiangsu Haian Petrochemical Factory

[0052] 6 g maleic anhydride

[0053] 5 grams baking soda

[0054] 1 g benzoyl peroxide

[0055] 0.9 g ammonium persulfate

[0056] 240 g water

[0057] Put the above materials directly into the container of the basket sand mill, continue to disperse for 1 hour, then grind while heating up to 95°C for 6 hours at a constant temperature, cool to 45°C to obtain the finished product, and discharge. In this embodiment, maleic anhydride reacts with baking soda in water to generate maleic acid sodium salt, which is not only a reactive surfactant but also a grafting monomer.

Embodiment 3

[0059] 100g KT-1 powder (maleic anhydride modified polypropylene D50: 14 microns)

[0060] 6 g acrylic acid

[0061] 5 grams baking soda

[0062] 0.5 g benzoyl peroxide

[0063] 1.3 g azobisisobutyronitrile

[0064] 10 g hydroxyethyl acrylate

[0065] 19 g styrene

[0066] 230 g water

[0067] Put the above materials directly into the container of the basket sand mill, continue to disperse for 1 hour, then grind while heating up to 95°C for 6 hours at a constant temperature, cool to 45°C to obtain the finished product, and discharge.

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Abstract

The invention discloses a method for preparing thermoplastic polymer aqueous dispersion. The method comprises the sequential steps of A. uniformly mixing 100 parts by mass of thermoplastic polymer powder, 5-20 parts by mass of a reactive surfactant, 0.05-2 parts by mass of an initiator, 0-30 parts by mass of a grafting monomer, and 180-250 parts by mass of water, thereby obtaining a mixture; B. heating up the mixture obtained in step A to 85-99 DEG C, preserving constant temperature for 3-6 hours under the stirring condition, then reducing the temperature of the material to room temperature, or moving on to next step without cooling; and C. grinding the material obtained in step B till the grain size D50 is less than 13mu m, cooling to room temperature and discharging. The prepared thermoplastic polymer aqueous dispersion is convenient to recycle, and is beneficial to environment protection. The preparation method is simple and easy to realize, and has high production efficiency and low production cost.

Description

technical field [0001] The invention relates to a preparation method of a thermoplastic polymer aqueous dispersion. Background technique [0002] As people's awareness of environmental protection is getting higher and higher, and the laws and regulations of various countries have higher and higher requirements for environmental protection, thermoplastic polymer aqueous dispersions have been more widely used. [0003] Due to the different properties of various polymers, some polymers can directly obtain stable aqueous dispersions through emulsion polymerization, such as poly(meth)acrylate, polystyrene, polyvinyl chloride, etc.; some polymers can be easily Polymer emulsions are obtained by dissolving in a solvent, adding an emulsifier, and then adding water to disperse and emulsify at a high speed, such as epoxy resin, low-molecular-weight polyester, etc.; Disperse and emulsify at high speed. [0004] Yuan Yongyao and Zhao Ke made a relatively comprehensive analysis in "Rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F283/04C08F2/30C08F2/28C08F2/26D06M15/263D06M15/29B32B27/04B32B27/28
Inventor 夏涛汪辉黄欣
Owner 南京彤天广元高分子材料有限公司
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