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Exposed nonionic emulsified asphalt waterproof emulsion and preparation method thereof

A technology of emulsified asphalt and waterproof emulsion, applied in asphalt coatings, radiation-absorbing coatings, coatings, etc., can solve the adverse effects of exposed emulsified asphalt waterproof coating film on weather resistance, heat resistance, water resistance, bubbling, deformation, discoloration, etc. The advantages of weather resistance cannot be fully exerted, etc., to achieve the effect of excellent asphalt color development ability and water white resistance ability, improve adhesion and reduce leakage risk

Pending Publication Date: 2021-02-26
佛山市顺德区巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to control the cost of raw materials and adapt to cationic emulsified asphalt, many manufacturers choose the common acrylic two-component waterproof emulsion on the market to produce this type of coating. There are weather resistance problems such as heat resistance of the coating film, resistance to water bubbling, deformation and discoloration, and obvious waterproof and impervious problems. risk
[0004] Traditional styrene-acrylic emulsion contains a large number of active benzene rings, which adversely affects the weather resistance of exposed emulsified asphalt waterproof coatings
Increasing the proportion of methyl methacrylate can reduce the risk of photooxidation, and at the same time, it will also cause insufficient crosslinking after the coating film, resulting in a significant decline in mechanical properties. Customers will face design difficulties in the production of industry-standard products, and the advantages of weather resistance will not be fully utilized. The problem

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  • Exposed nonionic emulsified asphalt waterproof emulsion and preparation method thereof

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Embodiment 1

[0023] A preparation method of exposed nonionic emulsified asphalt waterproof emulsion, comprising the following steps (the following raw materials are calculated in parts by weight):

[0024] a) Preparation of base material liquid: Add 16.4 parts of deionized water and 0.097 parts of sodium dodecyl diphenyl ether disulfonate into a polymerization kettle equipped with a stirrer, condenser, and constant-flow pump feeding device, and turn on the stirrer And heat up to the temperature in the kettle reaches 68 ℃;

[0025] b) Pre-emulsion preparation: Add 27.5 parts of deionized water, 0.183 parts of sodium dodecyl diphenyl ether disulfonate, 0.121 parts of sodium propoxy hydroxypropyl sulfonate, 0.907 parts of nonylphenol polyoxyethylene (10) ether, 0.726 parts of nonylphenol polyoxyethylene (40) ether, 12.8 parts of methyl methacrylate, 23.4 parts of n-butyl acrylate Parts, 10.4 parts of 2-ethylhexyl acrylate, 0.62 parts of acrylamide, 0.42 parts of acrylic acid, 0.21 parts of m...

Embodiment 2

[0029] A method for preparing an exposed nonionic emulsified asphalt waterproof emulsion, comprising the following steps (the following raw materials are calculated in parts by weight):

[0030] a) Preparation of base liquid: Add 16.4 parts of deionized water and 0.097 parts of sodium dodecyl diphenyl ether disulfonate to a polymerization kettle equipped with a stirrer, condenser, and constant-flow pump feeding device, and turn on the stirrer And heat up to the temperature in the kettle reaches 68 ℃;

[0031] b) Pre-emulsion preparation: Add 26 parts of deionized water, 0.161 parts of sodium dodecyl diphenyl ether disulfonate, nonyl 0.906 parts of phenol polyoxyethylene (10) ether, 0.725 parts of nonylphenol polyoxyethylene (40) ether, 6.4 parts of methyl methacrylate, 6.4 parts of styrene, 23.4 parts of n-butyl acrylate, 2-ethyl acrylic acid 10.4 parts of hexyl ester, 0.62 parts of acrylamide, 0.62 parts of acrylic acid, 0.48 parts of 2-hydroxyethyl acrylate, 0.048 parts of ...

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Abstract

The invention discloses an exposed nonionic emulsified asphalt waterproof emulsion and a preparation method thereof. The exposed nonionic emulsified asphalt waterproof emulsion comprises the followingraw materials: styrene, methyl methacrylate, alkyl acrylate, a functional monomer, an initiator, an emulsifier, deionized water and a pH regulator. The preparation method comprises the following steps: a) preparing a backing material liquid; b) preparing a pre-emulsified liquid; c) dropwise adding pre-emulsified liquid to react; and d) after the reaction is finished, preserving heat, adjusting the pH value, and discharging the product. The anionic emulsifier and the non-emulsifier are compounded with 2-hydroxyethyl acrylate for emulsion synthesis, so that the particle size is small, distribution is narrow, good adaptability with emulsified asphalt of different charge types on the market can be kept, water resistance and production stability are excellent, and the risks of water absorption, heated bubbling and appearance difference of downstream products can be reduced; compared with a traditional thermal decomposition initiation system, based on the the low-temperature oxidation-reduction initiation system for polymerization, the molecular weight of the polymer is increased, the problem that the elongation at break of a pure acrylic system is insufficient is effectively solved, and the weather resistance advantage of the pure acrylic system is completely achieved.

Description

technical field [0001] The invention relates to an exposed non-ionic emulsified asphalt waterproof emulsion and a preparation method thereof, belonging to the field of waterproof coatings. Background technique [0002] Petroleum asphalt is widely used in waterproofing projects, and has the characteristics of wide source of raw materials and low price. However, due to the poor heat and cold resistance of petroleum asphalt, and the problems of large environmental pollution, high energy consumption and low construction efficiency in traditional thermal construction methods, emulsified asphalt and asphalt modification have gradually attracted people's attention. [0003] Water-emulsion asphalt-based waterproof coatings have developed rapidly in recent years due to the characteristics of saving a large amount of solvents, less environmental pollution, high construction efficiency, and can be applied on wet base surfaces. This type of paint production process is mostly made by mi...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F220/14C08F220/56C08F220/06C08F220/20C08F230/08C08F230/02C08F212/08C08F4/40C08F2/26C08F2/30C08K5/3475C09D133/08C09D195/00C09D7/48C09D5/32
CPCC08F220/1804C08F4/40C08F2/26C08F2/30C08K5/3475C09D143/04C09D195/00C09D7/48C09D5/32C08F220/14C08F220/1808C08F220/56C08F220/06C08F220/20C08F230/085C08F230/02C08F212/08C08L95/00C08L43/04
Inventor 莫广强刘燕杨文涛
Owner 佛山市顺德区巴德富实业有限公司