The development of compound interconnection waterproof coating

The development of compound interconnection waterproof coating, the traditional waterproof materials (such as oil felt, asphalt, etc.) have the defects of the pollution environment, the difficulty of construction, the ability of weathering. However, as people's awareness of health, safety and environmental protection is increasing, the trend of waterproofing is becoming more and more obvious.

The production process

1) liquid: mix the mixture evenly with the mixture. The requirements are uniform, not stratified, and no floccus.

2) powder: mix the flour mixture evenly. The raw material of the powder is required to be used in 60 eyes.

Construction process

1) mix the liquid and the powder in proportion. The powder is expected to be added slowly to the mixture and the mixture will be about 5min.

2) mix the liquid, the powder mixture, 2 ~ 3 times, until the thickness is specified, and then the back trace must be done after the operation is done. Note that the mixture must be used once in a while and then remixed.

The laboratory examines the physical performance of the membrane

1) don't mix and apply bubbles when mixing and coating.

2) the liquid and the powder must be mixed evenly. In order to prevent the heterogeneous mix, the mixed materials should be extruded through the 60 mesh screen.

3) it is necessary to mix the liquid, the powder mixture, 2 ~ 3 coating to the film thickness of 1.5mm, and the back trace is then coated before the coating is done.

Emulsion and cement powder intermiscibility determination: will the cement powder and emulsion according to 1:1 quality than mixing, stirring evenly, the sticky paste and delicate, good liquidity, as a qualified.

JS 1.0:1.2 waterproof paint reference formula. Liquid material: JS emulsion: the mass ratio of foaming agent is 100:1; Powder: white cement (425 #) : heavy calcium (400) quality is 41:82.




Chinese name: Diethyl toluene diamine(DETDA)

Diethyltoluenediamine Raw material ：

TDA industrial, Sichuan production

Ethylene (Et) polymer grade, Shanghai production

TEA industrial imports

A reagent grade additives


The type and dosage of emulsifier can have direct effect on the stability of emulsion. Anionic and nonionic emulsifier, on the one hand, can improve the stability of emulsion polymerization and storage stability, on the other hand lotions and powders mixed stability. The experiment shows that the optimum dosage of emulsifier is 0.85% of the emulsion quality. The following: H - 870 emulsifier 0.60%, all added to the cauldron. Co-1220 emulsifier 0.25%, pre-emulsion added.

The effect of crosslinked monomer on emulsion performance. Through the introduction of crosslinking monomer copolymerization reaction, can form containing carboxyl, hydroxyl, multiple functions such as amide and N - methylol groups of the polymer chain, the functional group of polymer chains can occur between a variety of crosslinking reaction, thus giving the emulsion high cohesive strength, significantly improved bond strength and water resistance.

The effect of organosiloxane on water resistant emulsion. Organic siloxane is made up of silicon atoms and oxygen atoms alternate stable skeleton (the basic structural unit is - Si - O -), connected to the silicon atoms for various organic groups. Due to the special molecular structure of organosiloxane, it has excellent resistance to water, abrasion resistance and high and low resistance to chemical corrosion. And because organic siloxane a-171 contains double bonds, all can participate in copolymerization.

The effect of a-171 on polymerization stability and water resistance. The experiment shows that the introduction of the a-171 organic siloxane in the polymer chain of waterproof emulsion can improve the performance of water resistance. But as the dosage increases, so does the gel. When A - 171 organic siloxane over dosage of 0.7% of the total quality, waterproof emulsion coating flooding after 48 h, basic is not white, wrinkled skin, without become warped edge and film falls off phenomenon.

The effect of NMAM on emulsion performance. In the polymerization process, NMAM is used as a copolymer to introduce the n-hydroxymethyl group in the copolymer chain. In the process of film-forming, there can be condensation reactions between n-hydroxymethyl groups. The experiment proved that when NMAM dosage is 2% of the total monomer, composite crosslinking can significantly improve the waterproof latex adhesion, water resistance, alkali resistance, tensile strength and elongation at break, etc.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd 

Diethyl toluene diamine(DETDA)  http://www.yaruichem.com