Application of emulsifier for waterproof coating — octadecyl trimethyl ammonium chloride

2021-09-25   Pageview:581

Chemical composition: octadecyl trimethyl ammonium chloride (1831)

This product has a variety of properties such as softness, antistatic, sterilization, disinfection, emulsification, etc., and can be dissolved in alcohol and hot water. It has good compatibility with cationic, nonionic surfactants or dyes. Avoid compatibility with anionic surfactants, dyes or auxiliaries. Mainly used as an excellent emulsifier for synthetic rubber, silicone oil, asphalt and neoprene latex asphalt waterproof coatings; also a main component of hair conditioner; also used as an antistatic agent for synthetic fibers, glass fiber softener, and organic bentonite The modifier.













Alginate is found in nature. It is algin L21.22J with brown algae as the main body. It is a polysaccharide carboxylic acid substance. It can be dissolved in water after being neutralized with sodium hydroxide. It is in food. As a thickener in the pharmaceutical and cosmetic industries, it plays a major role as a synergistic emulsifier and stabilizer. The amount of alginate is limited in water-based coatings and textile printing inks. The molecular structure of alginic acid, ptfe powder buy
In addition to polysaccharides, other biodegradable polymers with different molecular weights and partially cross-linked aminoalanine are also discussed in the literature! Synthetic polymers

Polyacrylic acid
The main thickener used in coatings and inks is polyacrylate. Acrylic acid homopolymer is prepared from acrylic acid with 30% aqueous solution. It can be a copolymer prepared by the emulsion polymerization method of COOHOH OH with hydrophobic monomer (ie, O ethyl acrylate).

Acrylic thickener can be made of three kinds of HOOH
Available in the form: aqueous solution, dry powder and acid emulsions (alkali soluble emulsions, Figure 5-20 Alginic acid molecular structure AS E). These thickeners are neutralized with sodium hydroxide and ammonia to form a solution with a higher viscosity. The viscosity increases with the increase in pH, and the carboxylic acid functional group is converted into a carboxylic acid salt. The formation of carboxylate causes the internal molecules to repel and extend the polymer chain. Along the polymer chain, water molecules are adsorbed to form a high-concentration colloidal structure L3070.


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