News Details
Waterborne polyurethane coating applied crosslinking agent
2017-7-1 15:53:18
Waterborne polyurethane coating applied crosslinking agent
The photocuring waterborne polyurethane coating adopts the high-intensity radiation of electron beam and ultraviolet radiation to induce the low-active prepolymer system to produce crosslinking solidification, which is dominated by uv curing.
With unsaturated polyester polyols preparation of prepolymer, then introduce particle gene in the conventional way, after water treatment with a double bond in the main chain of polyurethane was some, again with soluble highly reactive alkoxy acrylate monomer, photosensitizer uv-curable waterborne polyurethane coatings additives such as mixed.
Room temperature curing waterborne polyurethane coating. For some heat-sensitive base materials and large parts, the heating method can not be used for crosslinking. The water-based polyurethane coating with room temperature crosslinking must be used. The properties of the hydroxypolyurethane prepolymer/acrylate mixture, especially the hydroxyacrylate mixture, can be improved by combining with the dispersible polyisocyanate.
This kind of waterborne polyurethane coating, using special isocyanate crosslinking agent, namely with - NCO terminal based isocyanate prepolymer, after water treatment, which are scattered in various containing hydroxyl polymer dispersions, with a variety of water medium containing hydroxyl polymer composition can at room temperature curing polyurethane coating.
Third-generation waterborne polyurethane coating (PUA). Polyurethane (PU) emulsion and polyacrylate (PA) emulsion are low, safe, non-combustible, non-toxic and pollution-free, compared with their solvent products. Pure PA emulsion has the defects of wear resistance, water resistance and chemical resistance, high solid content and wide application range.
PU and PA are complementary in nature. PUA composite emulsion has the advantages of the two, have wear-resisting, corrosion resistance and light, soft and elastic, water resistance and good mechanical properties, weather resistance and other characteristics, is known as "third generation" waterborne polyurethane, therefore, become a development trend of the coating.
Environment-friendly low-aromatic polyurethane coating. This coating can make up for the performance of water-based coating and keep solvent. It can also reduce the influence of coating on the environment. Both performance and environmental protection have been solved successfully. The coating system USES low - smelling and low-toxicity oil - type low - polar solvent as thinner.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Can significantly reduce the pollution to the environment of substances, such as benzene, xylene and harmful emissions of waste gas pollutants (HAPs), as a paint solvent system, it also has a good coating and construction performance, under the condition of low temperature in winter construction. In addition, due to the low solubility of solvents in the coating system, it will not be eroded and therefore easy to be repainted. It can be used for spraying materials that are susceptible to solvent erosion.
When using ionic dispersant dispersion of carbon material, through the size of the dispersed particles surface Zeta potential (Zeta) can determine the stability of the dispersion system, the higher the voltage, the stronger the electrostatic repulsion, system more stable. Zeta potential is closely related to the structure and PH of the active agent, such as the PH between 7 and 10, the stability is better, and the ionic active agent zeta electric potential can reach below 50 mv.
Nonionic dispersant, such as PVP, less effect on the zeta potential, good dispersion of carbon materials on the surface of the zeta potential is only about 9 mv, rely mainly on chain extending to the water space steric stability of dispersion of carbon materials. To achieve good stability, the surface must be anchored with a uniform stable layer of 0.01 ~ 0.1 mu m.
The proportion of the pigment in the paint to the film is the ratio of the proportion of the pigment to the film. The higher the face, the worse the mechanical performance, the easier the packing to fall off after scraping. Normal coating is less than 1.5:1, to guarantee the mechanical strength of the coating.
To achieve the conductive function of the coating to increase YanJi than appropriately, the law of seepage effect: meet conductive particles reach certain content in the coating, the interaction between particles into a 3 d mesh conductive channel, the resistivity sudden falling phenomenon. In the coating, in addition to the direct contact between carbon materials, the conduction of electric field under the action of electric field can also conduct [16] through tunnel effect and field emission mechanism. Generally, the content of carbon material is 40wt % and the conductivity can be obtained.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
The photocuring waterborne polyurethane coating adopts the high-intensity radiation of electron beam and ultraviolet radiation to induce the low-active prepolymer system to produce crosslinking solidification, which is dominated by uv curing.
With unsaturated polyester polyols preparation of prepolymer, then introduce particle gene in the conventional way, after water treatment with a double bond in the main chain of polyurethane was some, again with soluble highly reactive alkoxy acrylate monomer, photosensitizer uv-curable waterborne polyurethane coatings additives such as mixed.
Room temperature curing waterborne polyurethane coating. For some heat-sensitive base materials and large parts, the heating method can not be used for crosslinking. The water-based polyurethane coating with room temperature crosslinking must be used. The properties of the hydroxypolyurethane prepolymer/acrylate mixture, especially the hydroxyacrylate mixture, can be improved by combining with the dispersible polyisocyanate.
This kind of waterborne polyurethane coating, using special isocyanate crosslinking agent, namely with - NCO terminal based isocyanate prepolymer, after water treatment, which are scattered in various containing hydroxyl polymer dispersions, with a variety of water medium containing hydroxyl polymer composition can at room temperature curing polyurethane coating.
Third-generation waterborne polyurethane coating (PUA). Polyurethane (PU) emulsion and polyacrylate (PA) emulsion are low, safe, non-combustible, non-toxic and pollution-free, compared with their solvent products. Pure PA emulsion has the defects of wear resistance, water resistance and chemical resistance, high solid content and wide application range.
PU and PA are complementary in nature. PUA composite emulsion has the advantages of the two, have wear-resisting, corrosion resistance and light, soft and elastic, water resistance and good mechanical properties, weather resistance and other characteristics, is known as "third generation" waterborne polyurethane, therefore, become a development trend of the coating.
Environment-friendly low-aromatic polyurethane coating. This coating can make up for the performance of water-based coating and keep solvent. It can also reduce the influence of coating on the environment. Both performance and environmental protection have been solved successfully. The coating system USES low - smelling and low-toxicity oil - type low - polar solvent as thinner.
Chinese name: Diethyl toluene diamine(DETDA)
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Can significantly reduce the pollution to the environment of substances, such as benzene, xylene and harmful emissions of waste gas pollutants (HAPs), as a paint solvent system, it also has a good coating and construction performance, under the condition of low temperature in winter construction. In addition, due to the low solubility of solvents in the coating system, it will not be eroded and therefore easy to be repainted. It can be used for spraying materials that are susceptible to solvent erosion.
When using ionic dispersant dispersion of carbon material, through the size of the dispersed particles surface Zeta potential (Zeta) can determine the stability of the dispersion system, the higher the voltage, the stronger the electrostatic repulsion, system more stable. Zeta potential is closely related to the structure and PH of the active agent, such as the PH between 7 and 10, the stability is better, and the ionic active agent zeta electric potential can reach below 50 mv.
Nonionic dispersant, such as PVP, less effect on the zeta potential, good dispersion of carbon materials on the surface of the zeta potential is only about 9 mv, rely mainly on chain extending to the water space steric stability of dispersion of carbon materials. To achieve good stability, the surface must be anchored with a uniform stable layer of 0.01 ~ 0.1 mu m.
The proportion of the pigment in the paint to the film is the ratio of the proportion of the pigment to the film. The higher the face, the worse the mechanical performance, the easier the packing to fall off after scraping. Normal coating is less than 1.5:1, to guarantee the mechanical strength of the coating.
To achieve the conductive function of the coating to increase YanJi than appropriately, the law of seepage effect: meet conductive particles reach certain content in the coating, the interaction between particles into a 3 d mesh conductive channel, the resistivity sudden falling phenomenon. In the coating, in addition to the direct contact between carbon materials, the conduction of electric field under the action of electric field can also conduct [16] through tunnel effect and field emission mechanism. Generally, the content of carbon material is 40wt % and the conductivity can be obtained.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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