4 product features of anti-mold agent LF-20

2021-11-02   Pageview:543

1, Broad-spectrum, efficient in killing a variety of fungi and yeasts. Environmentally friendly, in line with EU requirements.

2, low toxicity, easy to operate, applicable pH 5 to 9 can be used.

3, Evenly dispersed, heat stable, non-combustible, easy to transport, stable under strong UV and acid rain conditions.

4, Passed ASTM E-1428-99 PINK STAIN and ASTM G-21-96 MIXED FUNGI test.















In the coating manufacturing process, it is often necessary to disperse inorganic pigments and fillers into organic base materials. Since the former are mostly hydrophilic polar substances (attract water molecules on the surface of pigments and fillers), and the latter are mostly hydrophobic non-polar substances, there is a lack of affinity between them. In order to increase the affinity between inorganic substances and organic polymers, the surface of inorganic substances can generally be treated with coupling agents or other surfactants to make it from hydrophilic to hydrophobic, thereby promoting the relationship between inorganic and organic substances.

The interface is combined. Coupling agents and surfactants are somewhat similar in molecular structure and application properties, but there are also differences. As we all know, surfactants are composed of hydrophobic (non-polar) and hydrophilic (polar) groups. The coupling agent is also composed of two groups with different properties, one is a hydrophobic (non-polar) group, and the other group can be coupled to the surface of polar pigments and fillers. The surfactant passes through the molecule The hydrophilic group adsorbs on the surface of inorganic pigments and fillers to form a monomolecular layer, which is a physical adsorption phenomenon, thereby improving the dispersion and wettability of pigments and fillers in the base material. The coupling agent is coupled to the surface of inorganic pigments and fillers through chemical reactions. In terms of bonding strength, increasing the degree of dispersion of inorganic pigments and fillers in the base material, and reducing the extent of interface free energy, coupling agents outperform surfactants.

The monofunctional titanate coupling agent has the general formula FCxHzOTiX, and X is a long carbon chain fatty acid group, phosphate group, pyrophosphate group, etc.

The isopropoxy group in the molecular formula can be coupled to the surface of the pigment and filler through a chemical reaction with the surface hydroxyl groups or protons of the inorganic pigment and filler. The long carbon chain hydrophobic X group in the molecular formula can be physically or chemically combined with the polymer base material, effectively changing the state of the interface between inorganics and organics, and improving the dispersibility and anti-settling of inorganics in organic systems.

It can not only shorten the grinding and mixing time, improve the dispersibility and utilization of pigments and fillers, but also greatly reduce the viscosity of the system, increase the melt fluidity, improve the processing technology, reduce the amount of solvents, and increase the filling of solid particles solvay ptfe powder such as inorganics. It can improve the mechanical properties and vividness of the paint film. Some titanate coupling agents can promote the crosslinking and curing of the paint film, reduce the curing temperature of the paint film, shorten the curing time and increase the adhesion: provide multiple functions such as rust resistance, corrosion resistance, heat resistance and oxidation resistance. Therefore, the function of titanate coupling agent is multifaceted. It is not only a coupling agent, but also a dispersant, wetting agent, adhesion promoter, curing catalyst, crosslinking agent, rust inhibitor, flame retardant, etc. Multiple functions.


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