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Polymethylmethacrylate waterproof paint and preparation method thereof

A technology of polymethyl methacrylate and methyl methacrylate, which is applied in the direction of coating, etc., can solve the problems of poor weather resistance, limit the application and promotion of polyurea, and cannot be suitable for low-temperature construction, etc., and achieve a simple production and preparation process , excellent chemical resistance, and convenient construction

Active Publication Date: 2011-08-03
GUANGZHOU SUPER CHEM COATING CO LTDGUANGZHOU SUPER CHEM COATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly limits the application and promotion of polyurea
[0005] In summary, the existing polyurethane waterproof coatings and polyurea waterproof coatings have poor weather resistance and cannot meet the needs of low-temperature construction. This requires an urgent need for a coating that has the same construction convenience, good weather resistance, and can meet low-temperature curing requirements. new waterproof coating

Method used

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  • Polymethylmethacrylate waterproof paint and preparation method thereof
  • Polymethylmethacrylate waterproof paint and preparation method thereof
  • Polymethylmethacrylate waterproof paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Accurately weigh 40 parts of methyl methacrylate, 25 parts of pentyl acrylate, and 2 parts of polyethylene glycol dimethacrylate into the reaction kettle, and start stirring and heating. When the temperature rose to 30°C, 29.88 parts of PMMA molding compound with a mass-average molecular weight of 20,000 were added, and the temperature was controlled at 80°C and stirred for 4 hours before cooling down. When the temperature drops to 65°C, add 0.02 part of hydroquinone, 0.25 part of N,N-dimethylaniline, 0.25 part of N,N dimethyl-p-toluidine, 0.1 part of cobalt naphthenate, and 0.5 part of softening 2 parts of paraffin wax and fumed silica at a temperature of 45°C-70°C. After continuing to cool down to 45°C, filter and package to obtain component A resin liquid.

Embodiment 2

[0052] Accurately weigh 37.65 parts of methyl methacrylate, 10 parts of butyl methacrylate, 10 parts of isooctyl acrylate, 2 parts of polypropylene glycol dimethacrylate, and 5 parts of butanediol dimethacrylate in the reaction kettle , start stirring and heating. When the temperature rose to 45°C, 30 parts of PMMA molding compound with a mass-average molecular weight of 50,000 were added, and the temperature was controlled at 70°C and stirred for 3 hours before cooling down. When the temperature drops to 60°C, add 0.15 parts of hydroquinone, 0.6 parts of N,N dimethyl-p-toluidine, 0.6 parts of cobalt isooctanoate, 1 part of polyethylene micropowder wax and 3 parts of fumed silica. After continuing to cool down to 40°C, filter and package to obtain component A resin liquid.

Embodiment 3

[0054] Accurately weigh 39.5 parts of methyl methacrylate, 20 parts of butyl acrylate, 10 parts of stearyl acrylate, 2 parts of polyethylene glycol dimethacrylate, and 3 parts of polyethylene glycol dimethacrylate in In the reaction kettle, start stirring and heating. When the temperature rose to 50°C, 17 parts of PMMA molding compound with a mass-average molecular weight of 160,000 were added, and the temperature was controlled at 75°C and stirred for 5 hours before cooling down. When the temperature drops to 60°C, add 0.2 parts of tert-butylhydroquinone, 0.5 parts of N,N-diethylaniline, 1.0 parts of N,N dimethyl-p-toluidine, 0.3 parts of cobalt isooctanoate, poly 1.5 parts of amide micronized wax and 5 parts of organic bentonite. After continuing to cool down to 35°C, filter and package to obtain component A resin liquid.

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Abstract

The invention relates to a polymethylmethacrylate waterproof paint and a preparation method thereof. The waterproof paint consists of components A and B, wherein the component A is a methacrylic acid resin liquid generated by reaction based on methyl methacrylate (MMA) utilized as a main composition, and the component B is an initiator. When the component A is prepared, a hard monomer, a soft monomer and a cross-linking monomer are put in a reaction kettle and evenly stirred, and then heating is carried out; polymethylmethacrylate moulding plastic is put, and then reaction is carried out for 1-6 hours at the temperature of 70-90 DEG C; cooling is carried out until the temperature is 50-65 DEG C, a polymerization inhibitor, an accelerator, sealing wax and a thixotropic agent are added and evenly stirred; and cooling is carried out until the temperature is 30-45 DEG C, and filtration and packaging are carried out so as to prepare the component A resin liquid. The components A and B are evenly stirred and mixed in a proper proportion, then coated, and finally solidified into a film. The waterproof paint has the characteristics of good strength, good elasticity, low temperature hardness, excellent weather resistance and the like, is simple and convenient for construction, can be solidified rapidly, and can be used for waterproof work of rapid transit railway bridge surfaces and super highway subgrades.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a polymethyl methacrylate waterproof coating which can be used for high-speed railway bridge decks and expressway roadbeds and a preparation method thereof. Background technique [0002] With the rapid development of the country's economy, the current road and rail transportation network can no longer meet the growing transportation demand. In January 2004, the State Council deliberated and approved the national "medium and long-term railway network plan". In order to achieve the national railway network development goal of 100,000 kilometers in operation by 2020, it is planned to build about 16,000 kilometers of ordinary railway lines and 12,000 kilometers of new lines The above "four vertical and four horizontal" railway rapid passenger transport channels and three intercity rapid passenger transport systems. These passenger dedicated lines belong to the high-speed railway system, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/12
CPCC09D133/12C09D4/06C09D7/12
Inventor 杨金鑫周子鹄陈文广彭益荣李国荣
Owner GUANGZHOU SUPER CHEM COATING CO LTDGUANGZHOU SUPER CHEM COATING CO LTD
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