Compound emulsifier for preparing emulsified paraffin as well as preparation method and application of compound emulsifier

A compound emulsifier and emulsified paraffin technology, which is applied in the chemical industry related to emulsified paraffin, can solve the problems of small improvement, emulsified paraffin floating phenomenon, and slow down concrete, etc., to achieve improved compressive strength, excellent water reduction effect, and improved electrical resistivity Effect

Active Publication Date: 2019-06-14
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At this stage, there are endless researches on the preparation of emulsified paraffin. Regarding the choice of emulsifier, most of them use a single emulsifier or a compound emulsifier prepared by two or three surfactants. Most of these emulsifiers can also produce emulsified paraffin solutions. , but among the many properties of emulsified paraffin (centrifugal stability, static stability, dispersibility, particle size and distribution, film-forming properties, etc.), there will always be one or more defects
For example, the composite emulsifier composed of Span-80 and Tween-80 has the best stability when the HLB value ranges from 9.8 to 10.0, but when the centrifugal speed is 12000r/min, stratification occurs
However, using Span-80 and AEO-9 as the compound emulsifier to prepare par

Method used

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  • Compound emulsifier for preparing emulsified paraffin as well as preparation method and application of compound emulsifier
  • Compound emulsifier for preparing emulsified paraffin as well as preparation method and application of compound emulsifier
  • Compound emulsifier for preparing emulsified paraffin as well as preparation method and application of compound emulsifier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The compound emulsifier used to prepare emulsified paraffin in this example includes the following components in parts by weight: Span-80: 90 parts; Tween-80: 40 parts; Pingpingjia A-20: 10 parts ; OP-10: 30 parts; Triethanolamine: 10 parts; Stearic acid: 5 parts; Ethylene glycol, 37 parts. At this moment, the HLB value of the composite emulsifier is 9.605, and the addition amount of the composite emulsifier is 3% of the total mass of the emulsion.

[0052] The emulsified paraffin wax prepared by using the compound emulsifier material prepared in Example 1 has good stability, no delamination after centrifugation, and a shelf life of about three months. Strong wax film, its particle size is micron, it has good compatibility with concrete when mixed into concrete, has little effect on cement hydration, and can play a certain role in reducing water, with a water reducing rate of about 6.2%.

[0053] The emulsified paraffin is mixed into the concrete with a solid content o...

Embodiment 2

[0055] The compound emulsifier used to prepare emulsified paraffin in this example includes the following components in parts by weight: Span-80: 92 parts; Tween-80: 42 parts; Pingpingjia A-20: 12 parts ; OP-10: 32 parts; Triethanolamine: 12 parts; Stearic acid: 6 parts; Ethylene glycol, 40 parts. At this moment, the HLB value of the composite emulsifier is 9.769, and the addition amount of the composite emulsifier is 3% of the total mass of the emulsion.

[0056] The emulsified paraffin wax prepared by using the compound emulsifier material prepared in Example 2 has good stability, no delamination after centrifugation, and a shelf life of about three months. Strong wax film, its particle size is micron, it has good compatibility with concrete when mixed into concrete, has little effect on cement hydration, and can play a certain role in reducing water, with a water reducing rate of about 7.7%.

[0057] The emulsified paraffin is mixed into concrete with a solid content of 5%...

Embodiment 3

[0059] The compound emulsifier used to prepare emulsified paraffin in this example includes the following components in parts by weight: Span-80: 95 parts; Tween-80: 45 parts; Pingpingjia A-20: 15 parts ; OP-10: 35 parts; Triethanolamine: 15 parts; Stearic acid: 8 parts; Ethylene glycol, 43 parts. At this moment, the HLB value of the composite emulsifier is 10.009, and the addition amount of the composite emulsifier is 3% of the total mass of the emulsion.

[0060] The emulsified paraffin prepared by using the compound emulsifier material prepared in Example 3 has good stability, does not delaminate after centrifugation, and has a shelf life of up to six months. The water-based wax film has a particle size of micron. When mixed into concrete, it has good compatibility with concrete, has a weak effect on cement hydration, and can reduce water to a certain extent. The water reduction rate is about 8.0%.

[0061] The emulsified paraffin is mixed into the concrete with a solid co...

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Abstract

The invention discloses a compound emulsifier for preparing emulsified paraffin as well as a preparation method and application of the compound emulsifier. The compound emulsifier comprises the following components in parts by weight: 90-100 parts of span-80; 40-50 parts of tween-80; 10-20 parts of peregal; 30-40 parts of OP-10; 10-20 parts of triethanolamine; 5-10 parts of stearic acid; and 37-48parts of ethylene glycol. The compound emulsifier has the advantages that the emulsifier consumption is low and the emulsifying effect is excellent. Emulsified paraffin prepared from the prepared emulsifying agent has the characteristics of good emulsion dispersity, high stability, long shelf life, high water solubility, good film-forming property and the like, and the prepared emulsified paraffin serving as an additive is doped into concrete, has good compatibility with the concrete and has a certain water reducing effect; meanwhile, the hydrophobicity of the concrete can be enhanced, and the durability such as impermeability and electric flux can be improved; and in addition, the conductivity of the concrete can be weakened, the resistivity of the concrete is greatly improved, and the emulsified paraffin can be used for preparing high-impedance concrete.

Description

technical field [0001] The invention discloses a compound emulsifier for preparing emulsified paraffin, its preparation method and application, and belongs to the technical field of emulsified paraffin related chemical industry. Background technique [0002] Emulsified wax is a kind of uniform fluid containing wax and water made under the action of external mechanical force by dispersing various waxes including petroleum wax evenly in water, with the help of directional adsorption of emulsifier. The method of domestic production of emulsified paraffin is relatively simple, and most of them are prepared by using anionic or nonionic surfactants as emulsifiers in an alkaline environment. In the traditional method, the amount of emulsifier is large, the cost is high, and the stability, dispersibility, dilution, particle size distribution and other properties of the emulsified paraffin wax can not be obtained at the same time, and there are obvious defects in one or more properti...

Claims

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Application Information

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IPC IPC(8): C08J3/03C08L91/06C04B24/36
Inventor 曾晓辉凌晨博郑克仁谢友均龙广成马昆林马聪朱华胜刘海川潘璋
Owner CENT SOUTH UNIV
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