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Paraffin emulsion with ultrahigh solid content and preparation method thereof

A technology of ultra-high solid content, paraffin wax emulsion, applied in the field of ultra-high solid content paraffin wax emulsion and its preparation, can solve the problems of large amount of small molecule surfactant, negative impact on material properties, low solid content, etc. effect, enhance stability, increase the effect of solid content

Active Publication Date: 2013-08-21
安徽斯迈特新材料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid content of the existing paraffin emulsions on the market is generally within 50%, which is basically formed by small molecule surfactants for stabilization, which leads to imperfect performance of the existing paraffin emulsions, and there are still some problems, such as: Paraffin wax emulsion has poor stability, low solid content, high viscosity, large amount of small molecule surfactants, toxicity, and easy foaming, which has a negative impact on material properties, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 100 parts by weight of paraffin wax emulsion contains: 40 parts of water, 55 parts of 56# semi-refined paraffin, 1.8 parts of plain O-20, 1.2 parts of glycerol monooleate, 1 part of KH570 modified nano silicon nitride (three-phase connection The antenna is 78°~80°), 1 part of polyvinyl alcohol 17-88.

[0040] The preparation method of the above paraffin emulsion is as follows:

[0041] a). The 56# semi-refined paraffin wax in the above proportion is stirred and melted in the reactor at 90~95℃, and it is recorded as component A;

[0042] b). Take 1 / 3 of the formula amount of water at 80°C, dissolve KH570 modified nano silicon nitride in it, prepare it into a dispersion, and record it as component B;

[0043] c). Dissolve polyvinyl alcohol 17-88 in 1 / 3 of the amount of water at 80°C to prepare a solution, and then mix it with component B to obtain component C;

[0044] d). After the component A in the reactor is completely melted and forms a transparent liquid, keep the temperatur...

Embodiment 2

[0049] 100 parts by weight of paraffin wax emulsion contains: 35 parts of water, 60 parts of 56# semi-refined paraffin, 1.8 parts of plain O-25, 1.2 parts of glycerol monostearate, 1 part of octadecanoic acid modified nano silicon nitride ( The three-phase contact angle is 70°~75°), 1 part of polyvinyl alcohol 17-88.

[0050] The preparation method is the same as that in Example 1. The prepared paraffin wax emulsion has a solid content of 60%, and the apparent viscosity of the emulsion at room temperature is 220-250 mPa·s.

Embodiment 3

[0052] 100 parts by weight of paraffin wax emulsion contains: 30 parts of water, 65 parts of 56# semi-refined paraffin, 1.8 parts of flat O-25, 1.2 parts of glycerol monooleate, 0.5 parts of KH570 modified nano silica (three-phase connection The tentacles are 81°~85°), 1.5 parts of hydroxyethyl cellulose.

[0053] The preparation method is the same as in Example 1. The obtained paraffin emulsion has a solid content of 60%, and the apparent viscosity of the emulsion at room temperature is 290-320 mPa·s.

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Abstract

The invention discloses a paraffin emulsion with ultrahigh solid content, which comprises 30%-40% of water, 54%-65% of paraffin, 2%-3% of emulsifying agent, 0.5%-1% of amphiphilic nano particle, and 1%-2% of poval or hydroxyethyl cellulose, wherein the emulsifying agent is fatty alcohol-polyoxyethylene ether and / or glycerin fatty acid ester, and the amphiphilic nano particle is hydrophobic modified nanometer silicon dioxide or nanometer silicon nitride. According to the paraffin emulsion, the amphiphilic nano particle and the macromolecular stabilizing agent are added and are used for stabilizing the paraffin emulsion with ultrahigh concentration together with the micro-molecular surface active agent, so that the solid content of the paraffin emulsion is increased, the stability of the paraffin emulsion is enhanced and the viscosity of the paraffin emulsion is reduced. The apparent viscosity of the paraffin emulsion provided by the invention at normal temperature is 200-350mPa.s and is lower than the viscosity of the frequently used paraffin emulsion at present. The dosage of the micro-molecular surface active agent, namely, the emulsifying agent, is reduced.

Description

technical field [0001] The invention relates to a paraffin wax emulsion with ultra-high solid content and a preparation method thereof which is synergistically stabilized by nanoparticles. Background technique [0002] Paraffin emulsion does not need to be melted or dissolved when used, and has excellent properties such as acid resistance, alkali resistance, and hard water resistance, and has the advantages of safety, high efficiency, economy and convenience. Widely used in various industries, such as waterproofing agent in wood-based panel industry; curing agent for reinforced concrete in construction industry; pulp sizing agent in paper industry; mold release agent in rubber and plastic industries, etc. The solid content of the existing paraffin emulsions on the market is generally within 50%, which is basically formed by small molecule surfactants for stabilization, which leads to imperfect performance of the existing paraffin emulsions, and there are still some problems,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/06C08L71/02C08L29/04C08L1/26C08K13/06C08K9/06C08K9/04C08K3/36C08K3/34C08K5/103
Inventor 田建国夏茹郝家宝
Owner 安徽斯迈特新材料股份有限公司
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