News Details
Self-dividing coating USES crosslinking agent
2017-6-29 17:16:54
Self-dividing coating USES crosslinking agent
You layer coating has the potential of technology and economic advantages: in a dry or crosslinking, the coating phase separation will occur and become two layers of coatings with different resin and pigment concentration, that don't have to two layers of paint coating.
The simplest method is to mix the raw materials in ordinary solvent or mixed solvents to produce homogeneous and thermodynamic liquid components. To realize hierarchical, during the period of the substrate coating, coating, or by common solvent volatilization or reaction between polymer (use potential crosslinking agent and high temperature), phase separation between the basic material combination.
The nano-particles, which have been prepared in a layered structure, are then arranged in the epoxy substrate to form a surface of two sizes. In a polydimethylsiloxane further modification was carried out on the surface, it can make the formation of super hydrophobic surface, contact Angle can be as high as 165 ° is obvious.
It is also possible to use electrochemical polymerization technology to get fluorine hydrophobic groups or hydrocarbon groups to get the superhydrophobic membrane. Yan et al. developed an ultra-hydrophobic polypyrrole membrane on the surface of the conductive surface. Simply by adjusting electrochemical potential, wettability can be converted between superhydrophobic and hyperhydrophilic. Special fluorinated polymers, organosilicon compounds or their compounds may be added to the standard coating formulations for superhydrophobic coatings.
The most famous and earliest external photochromic (stimulus response) commodity material is the "discoloration" lens of the glasses. These lenses are made of glass or polycarbonate and contain photochromic materials, which are silver halide molecules that respond to light. The material is transparent to light that does not have a large amount of ultraviolet light (which is more common in artificial lighting).
But when exposed to ultraviolet (UV) (such as direct exposure to sunlight), silver compound molecular chemical changes will happen, make its molecular shape changes, and absorb a large number of visible light, so dark.
The process of change is reversible; Once the lens is removed from the stronger uv light source, the silver compound will return to the transparent state. Plastic photosensitive lenses and coatings are often used in organic photosensitive molecules such as stomatoxazine and naphthalene, which can achieve reversible darkening effects.
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 durability of artificial materials is usually limited by a lack of internal "self-healing" mechanisms. The life of the polymer is limited, and its internal performance will deteriorate over the years. The traditional method of maintaining the properties of polymer and coatings is to add some additives in the paint formulation to reduce the influence caused by environmental factors and natural fatigue.
However, over time, under unfavorable conditions of use, the auxiliaries can become unstable, react or interact with other coatings, drain or deplete.
According to outdoor temperature and solar radiation intensity design reflecting paint and solar radiation absorption coating, it can change its optical properties. The main properties of materials that can control surface temperature are its solar reflectance and infrared radiation. The higher the reflectance and/or emissivity, the lower the surface temperature. This performance can be explained and analyzed by the mechanism of thermal discoloration.
Thermal discoloration refers to the performance of an organic or inorganic substance that changes color or spectral properties due to temperature changes, such as heating or cooling. In the reversible organic thermochromic system, if the temperature exceeds the set temperature, it will change from the darker color to the lighter color. The above color changes are realized by the thermal reversible transformation of the pigment molecular structure (visible to the spectral change of color). When the temperature drops below the discoloration point, the system returns to thermal stability.
Thermochromic paint is composed of non-infrared light absorbing polymer (common polymer), commonly used paint auxiliaries, solvents/water and thermochromic pigments. Two common thermochromic pigments are liquid crystal and cryptochrome dyes. Thermochromic dye is made from a mixture of cryptochrome dye and other suitable chemicals, whose colors vary with temperature, changing between colorless and colored.
The dye is rarely applied directly to the material, which is often made into microcapsules that encapsulate the dye mixture inside the capsule. Liquid crystals are often used for high precision, and its response temperature is very precise, but its color range is limited by working principle. The color range of the hidden dyes is more extensive, but the response temperature is not high.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
You layer coating has the potential of technology and economic advantages: in a dry or crosslinking, the coating phase separation will occur and become two layers of coatings with different resin and pigment concentration, that don't have to two layers of paint coating.
The simplest method is to mix the raw materials in ordinary solvent or mixed solvents to produce homogeneous and thermodynamic liquid components. To realize hierarchical, during the period of the substrate coating, coating, or by common solvent volatilization or reaction between polymer (use potential crosslinking agent and high temperature), phase separation between the basic material combination.
The nano-particles, which have been prepared in a layered structure, are then arranged in the epoxy substrate to form a surface of two sizes. In a polydimethylsiloxane further modification was carried out on the surface, it can make the formation of super hydrophobic surface, contact Angle can be as high as 165 ° is obvious.
It is also possible to use electrochemical polymerization technology to get fluorine hydrophobic groups or hydrocarbon groups to get the superhydrophobic membrane. Yan et al. developed an ultra-hydrophobic polypyrrole membrane on the surface of the conductive surface. Simply by adjusting electrochemical potential, wettability can be converted between superhydrophobic and hyperhydrophilic. Special fluorinated polymers, organosilicon compounds or their compounds may be added to the standard coating formulations for superhydrophobic coatings.
The most famous and earliest external photochromic (stimulus response) commodity material is the "discoloration" lens of the glasses. These lenses are made of glass or polycarbonate and contain photochromic materials, which are silver halide molecules that respond to light. The material is transparent to light that does not have a large amount of ultraviolet light (which is more common in artificial lighting).
But when exposed to ultraviolet (UV) (such as direct exposure to sunlight), silver compound molecular chemical changes will happen, make its molecular shape changes, and absorb a large number of visible light, so dark.
The process of change is reversible; Once the lens is removed from the stronger uv light source, the silver compound will return to the transparent state. Plastic photosensitive lenses and coatings are often used in organic photosensitive molecules such as stomatoxazine and naphthalene, which can achieve reversible darkening effects.
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 durability of artificial materials is usually limited by a lack of internal "self-healing" mechanisms. The life of the polymer is limited, and its internal performance will deteriorate over the years. The traditional method of maintaining the properties of polymer and coatings is to add some additives in the paint formulation to reduce the influence caused by environmental factors and natural fatigue.
However, over time, under unfavorable conditions of use, the auxiliaries can become unstable, react or interact with other coatings, drain or deplete.
According to outdoor temperature and solar radiation intensity design reflecting paint and solar radiation absorption coating, it can change its optical properties. The main properties of materials that can control surface temperature are its solar reflectance and infrared radiation. The higher the reflectance and/or emissivity, the lower the surface temperature. This performance can be explained and analyzed by the mechanism of thermal discoloration.
Thermal discoloration refers to the performance of an organic or inorganic substance that changes color or spectral properties due to temperature changes, such as heating or cooling. In the reversible organic thermochromic system, if the temperature exceeds the set temperature, it will change from the darker color to the lighter color. The above color changes are realized by the thermal reversible transformation of the pigment molecular structure (visible to the spectral change of color). When the temperature drops below the discoloration point, the system returns to thermal stability.
Thermochromic paint is composed of non-infrared light absorbing polymer (common polymer), commonly used paint auxiliaries, solvents/water and thermochromic pigments. Two common thermochromic pigments are liquid crystal and cryptochrome dyes. Thermochromic dye is made from a mixture of cryptochrome dye and other suitable chemicals, whose colors vary with temperature, changing between colorless and colored.
The dye is rarely applied directly to the material, which is often made into microcapsules that encapsulate the dye mixture inside the capsule. Liquid crystals are often used for high precision, and its response temperature is very precise, but its color range is limited by working principle. The color range of the hidden dyes is more extensive, but the response temperature is not high.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian