Super whether resistant high antipollution composite elastic construction paint

An architectural coating and ultra-weather-resistant technology, used in antifouling/underwater coatings, coatings, and biocide-containing paints, etc., which can solve the problems of poor stain resistance, increased molecular weight, and increased Tg value of the coating film , to achieve the effect of low surface tension, strong achromatic power and large electronegativity

Inactive Publication Date: 2007-02-14
ZHEJIANG ZHONGCHENG CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Molecular weight effect: the molecular weight increases, the Tg value increases, but after reaching a certain level, it has no effect
However, the coating film with too low Tg value has high elongation and

Method used

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  • Super whether resistant high antipollution composite elastic construction paint
  • Super whether resistant high antipollution composite elastic construction paint
  • Super whether resistant high antipollution composite elastic construction paint

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1: This super-weather-resistant and high-contamination-resistant composite elastic architectural coating mainly includes silicone-acrylic elastic emulsion and rutile TiO 2 Nano CaCO 3 With water, the weight ratio is: silicone-acrylic elastic emulsion 45%, rutile TiO 2 15%, nano-CaCO 3 2% and the balance of water, the silicone-acrylic elastic emulsion mainly includes methyl methacrylate, butyl acrylate, acrylate, silicone monomer, emulsifier, initiator, pH regulator and water. The weight ratio is: A 11% of methyl acrylate, 32% of butyl acrylate, 1.5% of acrylate, 6% of organic silicon monomer, 1.5% of emulsifier, 0.2% of initiator, 0.1% of pH adjuster and the balance of water.

Example Embodiment

[0030] Example 2: This super-weather-resistant and high-contamination-resistant composite elastic architectural coating mainly includes silicone-acrylic elastic emulsion and rutile TiO 2 Nano CaCO 3 And water, the weight ratio is: silicone-acrylic elastic emulsion 55%, rutile TiO 2 20%, nano-CaCO 3 3% and the balance of water. Among them, the silicone-acrylic elastic emulsion mainly includes methyl methacrylate, butyl acrylate, acrylate, silicone monomer, emulsifier, initiator, PH regulator and water. The weight ratio is: A 13% of methyl acrylate, 37% of butyl acrylate, 3% of acrylate, 8% of organic silicon monomer, 3% of emulsifier, 0.7% of initiator, 0.15% of pH regulator and the balance of water.

Example Embodiment

[0031] Example 3: The difference from Example 1 is that the silicone-acrylic elastic emulsion, rutile TiO 2 Nano CaCO 3 Add pigments, fillers, dispersants, thickeners, defoamers and pH regulators to the water. The weight ratio is: silicone-acrylic elastic emulsion 45%, rutile TiO 2 15%, nano-CaCO 3 2%, pigment and filler 10%, dispersant 2%, thickener 2%, defoamer 0.5%, pH regulator 0.2%, and the rest of water.

[0032] The emulsifier is potassium laurate, the initiator is potassium persulfate, the pH regulator is sodium bicarbonate, the pigment and filler are sericite or silica fume; the dispersant is polyphosphate, polyacrylic acid Sodium salt, ammonium polyacrylate, potassium polyacrylate or sodium hexametaphosphate. The thickener is hydrophobic polyurethane thickener RM8W or TT935 thickener. The defoamer is DEFOAMER334 for latex paint. The pH regulator is the pH regulator of AMP95.

[0033] The production process of silicone-acrylic elastic emulsion is as follows figure 1 As s...

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Abstract

The invention relates to a super-weather resistance, high-stain resistance, composite elastic building coating, mainly comprising acrylate silicon elastic emulsion 45-55wt%, rutile TiO2 15-20wt%, nano CaCO3 2-3wt% and water the rest, where the silicon-acrylate elastic emulsion mainly comprises methyl methacrylate 11-13wt%, butyl acrylate 32-37wt%, acrylate 1.5-3wt%, organic silicon monomers 6-8wt%, emulsifier 5-3wt%, initiating agent 0.2-0.7wt%, PH regulator 0.1-0.15wt% and water the rest. And it has beneficial effects of: selecting nano CaCO3 and rutile TiO2 to modified-prepare silicon-acrylate elastic building coating, cooperatively improving synthetic performances of the coating and implementing optimum balance of elasticity, resistance, rigidity and stain-resistance.

Description

technical field [0001] The invention relates to the field of building materials, and mainly relates to a super-weather-resistant and high-fouling-resistant composite elastic architectural paint. Background technique [0002] With the rapid growth of the national economy, the continuous improvement of people's living standards and the emergence of a large number of high-rise buildings, higher requirements have been put forward for the decorative effect and function of architectural coatings. High-performance functional architectural coatings have become the current research and development. focus. [0003] During many years of engineering site construction and management services, it has been found that during the long-term use of buildings, they are eroded by rain, carbon dioxide, sulfur dioxide gas, and thermal expansion and contraction caused by temperature differences, which often lead to cracks on the walls of buildings. It makes ordinary finishi...

Claims

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Application Information

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IPC IPC(8): C09D133/06C09D5/16
Inventor 董利华吴志枉宋国台董育健
Owner ZHEJIANG ZHONGCHENG CONSTR GRP
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