Preparation method of vinyl acetate sand fixing emulsion with damping capacity

A vinyl acetate, sand-fixing emulsion technology, applied in chemical instruments and methods, organic fertilizers, applications, etc., can solve the problems of poor wind erosion resistance, short service period, long wind period, etc., achieve excellent damping performance, and enhance water retention. , the effect of speeding up the wind

Inactive Publication Date: 2019-03-01
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In view of the main problems existing in the current sand-fixing materials, the purpose of the present invention is to provide a method for preparing a vinyl acetate sand-fixing emulsion with damping properties, so as to solve the problem of wind erosion resistance of existing sand-fixing materials in desert areas with strong winds, long wind periods and large temperature differences. Poor performance and short service life

Method used

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  • Preparation method of vinyl acetate sand fixing emulsion with damping capacity
  • Preparation method of vinyl acetate sand fixing emulsion with damping capacity
  • Preparation method of vinyl acetate sand fixing emulsion with damping capacity

Examples

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Embodiment 1

[0036]Mix and disperse 0.3 parts of ammonium lauryl ether sulfate, 0.3 parts of polyethylene glycol 400 monolaurate, 0.3 parts of Span 85 and 40 parts of deionized water, then add 30 parts of vinyl acetate and 5 parts of methacrylic acid Methyl ester and 5 parts of lauryl methacrylate monomer were ultrasonically dispersed for 3 minutes to obtain a pre-emulsion. Dissolve 0.15 parts of potassium persulfate in 14 parts of deionized water and set aside. Add 16 parts of deionized water, 0.1 part of ammonium lauryl ether sulfate, 0.1 part of polyethylene glycol 400 monolaurate, and 0.1 part of Span 85 into the reaction kettle, heat and stir to raise the temperature to 80°C, and react for 15 minutes. Add 1 / 5 (mass fraction of the total weight of potassium persulfate) potassium persulfate solution, keep warm for 10 min, then slowly add 3 / 5 (mass fraction of the total weight of potassium persulfate) dropwise with a constant pressure dropping funnel Initiator and ultrasonic pre-emulsio...

Embodiment 2

[0044] Mix and disperse 0.4 parts of ammonium lauryl ether sulfate, 0.4 parts of polyethylene glycol 400 monolaurate, 0.4 parts of Span 85 and 40 parts of deionized water, then add 24 parts of vinyl acetate and 3 parts of methacrylic acid Methyl ester and 5 parts of lauryl methacrylate monomer were ultrasonically dispersed for 3 minutes to obtain a pre-emulsion. Dissolve 0.2 parts of potassium persulfate in 14 parts of deionized water and set aside. Add 16 parts of deionized water, 0.1 part of ammonium lauryl ether sulfate, 0.1 part of polyethylene glycol 400 monolaurate, and 0.1 part of Span 85 into the reaction kettle, heat and stir to raise the temperature to 80°C, and react for 15 minutes. Add 1 / 5 (mass fraction of the total weight of potassium persulfate) potassium persulfate solution, keep warm for 10 min, then slowly add 3 / 5 (mass fraction of the total weight of potassium persulfate) dropwise with a constant pressure dropping funnel Initiator and ultrasonic pre-emulsio...

Embodiment 3

[0046] Mix and disperse 0.2 parts of ammonium lauryl ether sulfate, 0.4 parts of polyethylene glycol 400 monolaurate, 0.3 parts of Span 85 and 40 parts of deionized water, then add 30 parts of vinyl acetate and 3 parts of methacrylic acid Methyl ester and 7 parts of lauryl methacrylate monomer were ultrasonically dispersed for 5 minutes to obtain a pre-emulsion. Dissolve 0.2 parts of potassium persulfate in 14 parts of deionized water and set aside. Add 16 parts of deionized water, 0.1 part of ammonium lauryl ether sulfate, 0.1 part of polyethylene glycol 400 monolaurate, and 0.1 part of Span 85 into the reaction kettle, heat and stir to raise the temperature to 80°C, and react for 15 minutes. Add 1 / 5 (mass fraction of the total weight of potassium persulfate) potassium persulfate solution, keep warm for 10 min, then slowly add 3 / 5 (mass fraction of the total weight of potassium persulfate) dropwise with a constant pressure dropping funnel Initiator and supersonic pre-emulsio...

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Abstract

The invention relates to a preparation method of vinyl acetate sand fixing emulsion with damping capacity. Emulsion polymerization is performed through ultrasonic emulsification; copolymerization is performed on vinyl acetate used as a main monomer, methyl methacrylate used as an auxiliary monomer and a pendant chain-containing long-chain branched acrylate monomer used as a functional monomer; a water-soluble peroxy compound is used as an initiator, and anionic and nonionic emulsifiers are used as a composite emulsifying system to synthesize the vinyl acetate sand fixing emulsion with the damping capacity. The product has the advantages of excellent bonding performance, high wind erosion resistance, no pollution to the environment, good use durability, simple preparation method, suitability for large-scale production and the like, and can be used for preventing and treating desertization of a desert with a large temperature difference and strong wind.

Description

technical field [0001] The invention specifically relates to a method for preparing a vinyl acetate sand-fixing emulsion with damping performance, which belongs to the field of chemical sand-fixing. Background technique [0002] As an extremely important environmental and social problem, desertification is plaguing the world today and threatening the survival and development of human beings. All countries in the world regard the control of desertification as an important issue of ecological environment construction and sustainable development. [0003] As the largest developing country in the world, my country has long suffered from large-scale desertification, which has caused serious environmental problems. According to the data of the "5th China Desertification and Sandification Status Bulletin", by the end of 2014, the total area of ​​desertified land in the country was 2.6216 million square kilometers, accounting for 27.2% of the total land area, distributed in Inner Mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F218/08C08F220/14C08F220/18C08F2/26C08F2/30C09K17/20
CPCC08F218/08C09K17/20C08F220/14C08F220/1812
Inventor 刘白玲谢浩陈华林罗荣龚伟臧运晓杜泽川
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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