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Low-internal-stress acrylic emulsion and preparation method thereof

An acrylic emulsion and internal stress technology, which is applied in the direction of coating, etc., can solve the problems of manpower consumption, material resources, financial resources, and solid waste pollution of the environment, and achieve the effect of reducing TG, reducing internal stress, and facilitating production

Active Publication Date: 2020-05-29
广东巴德富新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the renovation methods on the market are to remove the original wall first, and then repaint according to the new wall construction method, which consumes a lot of manpower, material resources, and financial resources. At the same time, solid waste seriously pollutes the environment, so it is urgently needed A latex paint that can be applied without removing the original front

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  • Low-internal-stress acrylic emulsion and preparation method thereof

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preparation example Construction

[0044] In addition, the present invention also provides the preparation method of described low internal stress acrylic emulsion, comprising steps:

[0045] (1) Pre-emulsion A: At normal temperature and pressure, add 10%-20% of the mass of the anionic emulsifier in the emulsifier and 25% of the mass of the non-ionic emulsifier, and 10-20 parts of distilled water in the emulsification tank A , fully stirred to dissolve, and sequentially added 10-20 parts of methyl methacrylate, 0.03-0.1 part of cross-linking monomer, 0.05-0.1 part of initiator, fully stirred for 20-30 minutes, prepared pre-emulsion A, and set aside;

[0046] (2) Pre-emulsion B: under normal temperature and pressure, add 20%-30% of the mass of anionic emulsifier and 25% of the mass of non-ionic emulsifier, and 40-60 parts of distilled water into pre-emulsification cylinder B, fully stir and dissolve, Then add the remaining amount of methyl methacrylate, the formula amount of alkyl acrylate, the formula amount of...

Embodiment 1

[0054] A kind of low internal stress acrylic emulsion, by mass parts, is made of following raw material: 90 parts of distilled water, 40 parts of methyl methacrylate, 40 parts of butyl acrylate, 1 part of acrylic acid, emulsifier (2 parts of anionic emulsifier SR-10, 1 part of nonionic emulsifier LCN118), 0.1 part of vinyltrimethoxysilane, 0.1 part of pretreated glycidyl methacrylate, 0.5 part of potassium persulfate, 0.1 part of tert-butyl hydroperoxide , 0.1 parts of vitamin C, and 5 parts of NaOH with a mass fraction of 10%.

[0055] The preparation method of described low internal stress acrylic acid emulsion, comprises the steps:

[0056] (1) Pre-emulsion A: under normal temperature and pressure, add 10% of the quality of the anionic emulsifier SR-10 and 25% of the quality of the nonionic emulsifier LCN118 in the emulsifier, 10 parts of distilled water in the emulsification tank A, Stir fully to dissolve, and add 10 parts of methyl methacrylate, 0.05 parts of vinyltrimet...

Embodiment 2

[0067] A kind of low internal stress acrylic emulsion, by mass parts, is made of the following raw materials: 90 parts of distilled water, 30 parts of methyl methacrylate, 50 parts of butyl acrylate, 1 part of acrylic acid, emulsifier (2 parts of anionic emulsifier RS -610, 1 part of nonionic emulsifier LCN118), 0.1 part of vinyl triethoxysilane, 0.1 part of glycidyl methacrylate after pretreatment, 0.5 part of potassium persulfate, 0.1 part of tert-butyl hydroperoxide, 0.1 parts of vitamin C, 10 parts of NaOH with a mass fraction of 10%.

[0068] In addition, the present invention also provides the preparation method of described low internal stress acrylic emulsion, comprising steps:

[0069] (1) Pre-emulsion A: under normal temperature and pressure, add 15% of the quality of the anionic emulsifier RS-610 in the emulsifier and 25% of the quality of the nonionic emulsifier LCN118, 10 parts of distilled water in the emulsification tank A, Stir fully to dissolve, and add 10 pa...

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Abstract

The invention discloses a low-internal-stress acrylic emulsion. The emulsion is prepared from the following raw materials in parts by weight: 80-120 parts of distilled water, 30 to 50 parts of methylmethacrylate, 40 to 70 parts of alkyl acrylate, 0.5 to 5 parts of an acrylic hydrophilic monomer, 1 to 5 parts of an emulsifier, 0.05 to 0.2 part of a crosslinking monomer, 0.1 to 1 part of a functional monomer for increasing the adhesive force, 0.3 to 1 part of an initiator, 0.1 to 0.5 part of an oxidant, 0.1 to 0.5 part of a reducing agent and 2 to 20 parts of a pH regulator. The low-internal-stress acrylic emulsion is simple in synthesis process and beneficial to production, meanwhile, a seed emulsion polymerization process is adopted, the size distribution range of emulsion particles can be reduced, the solid content of the emulsion is 40-60%, and the particle size is 0.1-0.3 [mu]m. A post-elimination process is carried out at the later stage of the reaction, so that a final finished product has relatively small smell.

Description

technical field [0001] The invention relates to a low internal stress acrylic emulsion and a preparation method thereof, belonging to the field of acrylic emulsion. Background technique [0002] Latex paint is a kind of water-based paint. It is a water dispersion system formed by dispersing pigments, fillers and additives in synthetic polymer emulsion. Water-based interior wall paint has a healthy , environmental protection, convenient construction, good water resistance, excellent scrub resistance, etc., are loved by people. According to incomplete statistics, there were 58 billion square meters of existing buildings in 2016, not including houses built before 1981. Generally, the refurbishment cycle of old houses is 8-10 years. If 1% of the old houses are refurbished, it will be 580 million square meters; my country's real estate sales data in 2016 has reached a peak in recent years. If calculated according to this point in time, then After 2020, the renovated area will be...

Claims

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Application Information

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IPC IPC(8): C08F265/06C08F220/14C08F220/18C08F220/06C08F230/08C08F220/32C08F2/26C08F2/30C09D151/00
CPCC08F265/06C08F2/26C08F2/30C09D151/003C08F220/14
Inventor 左天路郑占龙吴洋曾庆乐
Owner 广东巴德富新材料有限公司
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