News Details
Mimidazi paint crosslinking agent
2017-6-25 16:25:33
Mimidazi paint crosslinking agent
Imidazole, 2 - methyl imidazole, 2 - ethyl - 4 - methyl imidazole, 2 - phenyl imidazole imidazoles crosslinking agent is a kind of highly active crosslinking agent, the temperature in a short time can make epoxy crosslinking, therefore its single component system with epoxy resin composition storage period is shorter, the modification must be, the introduction of large substituent in its molecular form has the space steric hindrance imidazoles derivatives, Cu, Ni, Co or and transition metals, zinc and other inorganic salt reaction to generate the corresponding imidazole salt complex, to become a certain storage period at room temperature latent sexual coupling agent.
Imidazoles crosslinking agent for chemical modification of the method are many, on the reaction mechanism of it, there are mainly two kinds: one kind is to use imidazole ring one secondary amino nitrogen atoms on the active hydrogen on the modification, the modifier isocyanate, cyanate ester, lactones, etc., the modified imidazoles derivatives has long storage period and good mechanical properties.
Another method is to use the imidazole ring 3 N atoms, alkaline modification to its, make it with empty orbital compound composite, this kind of material including organic acids, inorganic salts, acid anhydride, metal TCNQ, boric acid, etc.
Including metal inorganic salts are generally contain with empty orbital transition metal ions, such as Cu2 + and Ni2 +, Zn2 + and Cd2 +, Co2 +, they form with imidazole ligand complex, has the very good storage, and crosslink rapidly in 150 ~ 170 ℃, but the introduction of inorganic salts, organic acid and its salts, etc, will damage the original imidazole crosslinked product of hydrolysis resistance and resistance to hot and humid.
Various imidazole with toluene diisocyanate (TDI), isophorone diisocyanate (IPDI), six methyl diisocyanate (HDI) reaction product made from closed, weakened the imidazole ring on the activity of amino and have a long life, when the temperature rises to above 100 ℃, sealing up lifted and imidazole recovery activity, epoxy crosslinking.
Chlorinated rubber coatings have good resistance to water and chemical resistance, strong alkali resistance and strong adhesion to concrete. Quick drying, simple construction and excellent repainting performance. Can be used for building surface and pool surface.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Epoxy coating has good adhesion to concrete surface and good chemical resistance. The epoxy coating prepared by liquid resin and liquid crosslinking agent can penetrate deeply into the concrete surface to enhance the surface strength and density of the concrete.
Epoxy coating is one of the concrete surface of the main varieties of paint, heavy anti-corrosion application of the epoxy varnish, high build epoxy coating and epoxy micaceous iron oxide intermediate paint and acrylic polyurethane surface can form a complete set to become high-performance, long-term corrosion protection system for bridge. High molecular weight epoxy coating, with an amine or polyamide as crosslinking agent, is not very different from the epoxy coating applied to steel bottom, and the performance is similar.
Polyurethane coatings have similar properties to epoxy coatings, and they are more flexible to compensate for small cracks in the concrete surface. Due to the outstanding chemical resistance, it is widely used in the lining lining of concrete tanks. For concrete Bridges in atmospheric corrosive environment, fatty polyurethane coatings have excellent weatherability, which is the first choice of high decorative finishes with epoxy sealing paint and epoxy intermediate paint.
Acrylic latex coating is the main product in the building paint, acrylic emulsion coating is highly alkaline, has hydrolysis stability, especially suitable for concrete surface. Acrylic latex coating has a strong respiratory function that allows water vapor to penetrate, but it also has a barrier to water. Excellent elasticity and elastic response, allowing acrylic latex paint to tolerate the surface of concrete without damage.
Acrylic coating has good alkali resistance, surface paint has good weatherability, single component packaging, quick drying and easy construction. Acrylic finish has replaced the use of chlorinated rubber finishes in Bridges. The shantou bay bridge is equipped with acrylic thick slurry surface paint and epoxy coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Imidazole, 2 - methyl imidazole, 2 - ethyl - 4 - methyl imidazole, 2 - phenyl imidazole imidazoles crosslinking agent is a kind of highly active crosslinking agent, the temperature in a short time can make epoxy crosslinking, therefore its single component system with epoxy resin composition storage period is shorter, the modification must be, the introduction of large substituent in its molecular form has the space steric hindrance imidazoles derivatives, Cu, Ni, Co or and transition metals, zinc and other inorganic salt reaction to generate the corresponding imidazole salt complex, to become a certain storage period at room temperature latent sexual coupling agent.
Imidazoles crosslinking agent for chemical modification of the method are many, on the reaction mechanism of it, there are mainly two kinds: one kind is to use imidazole ring one secondary amino nitrogen atoms on the active hydrogen on the modification, the modifier isocyanate, cyanate ester, lactones, etc., the modified imidazoles derivatives has long storage period and good mechanical properties.
Another method is to use the imidazole ring 3 N atoms, alkaline modification to its, make it with empty orbital compound composite, this kind of material including organic acids, inorganic salts, acid anhydride, metal TCNQ, boric acid, etc.
Including metal inorganic salts are generally contain with empty orbital transition metal ions, such as Cu2 + and Ni2 +, Zn2 + and Cd2 +, Co2 +, they form with imidazole ligand complex, has the very good storage, and crosslink rapidly in 150 ~ 170 ℃, but the introduction of inorganic salts, organic acid and its salts, etc, will damage the original imidazole crosslinked product of hydrolysis resistance and resistance to hot and humid.
Various imidazole with toluene diisocyanate (TDI), isophorone diisocyanate (IPDI), six methyl diisocyanate (HDI) reaction product made from closed, weakened the imidazole ring on the activity of amino and have a long life, when the temperature rises to above 100 ℃, sealing up lifted and imidazole recovery activity, epoxy crosslinking.
Chlorinated rubber coatings have good resistance to water and chemical resistance, strong alkali resistance and strong adhesion to concrete. Quick drying, simple construction and excellent repainting performance. Can be used for building surface and pool surface.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Epoxy coating has good adhesion to concrete surface and good chemical resistance. The epoxy coating prepared by liquid resin and liquid crosslinking agent can penetrate deeply into the concrete surface to enhance the surface strength and density of the concrete.
Epoxy coating is one of the concrete surface of the main varieties of paint, heavy anti-corrosion application of the epoxy varnish, high build epoxy coating and epoxy micaceous iron oxide intermediate paint and acrylic polyurethane surface can form a complete set to become high-performance, long-term corrosion protection system for bridge. High molecular weight epoxy coating, with an amine or polyamide as crosslinking agent, is not very different from the epoxy coating applied to steel bottom, and the performance is similar.
Polyurethane coatings have similar properties to epoxy coatings, and they are more flexible to compensate for small cracks in the concrete surface. Due to the outstanding chemical resistance, it is widely used in the lining lining of concrete tanks. For concrete Bridges in atmospheric corrosive environment, fatty polyurethane coatings have excellent weatherability, which is the first choice of high decorative finishes with epoxy sealing paint and epoxy intermediate paint.
Acrylic latex coating is the main product in the building paint, acrylic emulsion coating is highly alkaline, has hydrolysis stability, especially suitable for concrete surface. Acrylic latex coating has a strong respiratory function that allows water vapor to penetrate, but it also has a barrier to water. Excellent elasticity and elastic response, allowing acrylic latex paint to tolerate the surface of concrete without damage.
Acrylic coating has good alkali resistance, surface paint has good weatherability, single component packaging, quick drying and easy construction. Acrylic finish has replaced the use of chlorinated rubber finishes in Bridges. The shantou bay bridge is equipped with acrylic thick slurry surface paint and epoxy coating.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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