News Details
Selection of paint crosslinking agent
2017-7-19 16:21:28
Selection of paint crosslinking agent
The selection of paint crosslinking agent is considered for crosslinking agent variety and performance. The crosslinking agent has great influence on the mechanical properties, heat resistance, water resistance and corrosion resistance of crosslinking agents.
Such as aromatic polyamines, imidazole, anhydride and other crosslinking agents, the heat resistance of the crosslinked epoxy resin is higher than that of polyamide and low molecular polyamide crosslinking agents. The water resistance of aromatic acid anhydride with epoxy resin is better than that of aromatic diamine and fatty polyamide crosslinking agent. The triethylamine cross-linking agent of sanya is good for alkali resistance, but it has poor acidity and formaldehyde solution.
The drug resistance of polyamine (e.g., isovolidone diamide) is excellent. Acid anhydride crosslinking agent crosslinked epoxy resin is better than acid resistance. Appropriate crosslinking agents should be selected based on different USES and performance requirements.
The selection of paint crosslinking agent is used in combination of several crosslinking agents. Compound use several kinds of crosslinking agent, can get the result of bring out the best in each other, such as low molecular polyamide crosslinking agent with a small amount of m-phenylene diamine crosslinking agent, as well as room temperature crosslinking, and can make the crosslinking material toughness increase appropriately increase the heat resistance at the same time.
Trimellitic anhydride (TMA) and methyl benzene anhydride compound using four hydrogen, eutectic mixture low viscosity (25 ℃ and 200 ~ 250 mpa, s), mixed with epoxy resin, improve the manufacturability.
Coating is the choice of the crosslinking agent (3) pay attention to environmental protection of crosslinking agent chooses the crosslinking agent to deal with the human body without harm, on the environment pollution-free, ethylenediamine never used as a crosslinking agent alone, as far as possible with modified amine crosslinking agent.
Also choose crosslinking agent also look at the effect of crosslinking agent, can improve the surface properties such as hardness, there are many varieties, the market now, solid, for example, America, etc., which requires people to choose carefully, don't spend the money, otherwise, the hardness of the ground such as how to improve the performance, later go to to deal with problems on the ground.
Sunmide75IL amide amine, normal temperature, low viscosity, medium can use time, the ratio range is wide, concrete glue is sticky, alone or with other crosslinking agent use to improve crosslinking speed and crosslinking performance. Used for concrete primer and paint, mortar, concrete mending, ground flat color sand, electronic sealant, casting, general adhesive.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The selection of paint crosslinking agent is considered for crosslinking agent variety and performance. The crosslinking agent has great influence on the mechanical properties, heat resistance, water resistance and corrosion resistance of crosslinking agents.
Such as aromatic polyamines, imidazole, anhydride and other crosslinking agents, the heat resistance of the crosslinked epoxy resin is higher than that of polyamide and low molecular polyamide crosslinking agents. The water resistance of aromatic acid anhydride with epoxy resin is better than that of aromatic diamine and fatty polyamide crosslinking agent. The triethylamine cross-linking agent of sanya is good for alkali resistance, but it has poor acidity and formaldehyde solution.
The drug resistance of polyamine (e.g., isovolidone diamide) is excellent. Acid anhydride crosslinking agent crosslinked epoxy resin is better than acid resistance. Appropriate crosslinking agents should be selected based on different USES and performance requirements.
The selection of paint crosslinking agent is used in combination of several crosslinking agents. Compound use several kinds of crosslinking agent, can get the result of bring out the best in each other, such as low molecular polyamide crosslinking agent with a small amount of m-phenylene diamine crosslinking agent, as well as room temperature crosslinking, and can make the crosslinking material toughness increase appropriately increase the heat resistance at the same time.
Trimellitic anhydride (TMA) and methyl benzene anhydride compound using four hydrogen, eutectic mixture low viscosity (25 ℃ and 200 ~ 250 mpa, s), mixed with epoxy resin, improve the manufacturability.
Coating is the choice of the crosslinking agent (3) pay attention to environmental protection of crosslinking agent chooses the crosslinking agent to deal with the human body without harm, on the environment pollution-free, ethylenediamine never used as a crosslinking agent alone, as far as possible with modified amine crosslinking agent.
Also choose crosslinking agent also look at the effect of crosslinking agent, can improve the surface properties such as hardness, there are many varieties, the market now, solid, for example, America, etc., which requires people to choose carefully, don't spend the money, otherwise, the hardness of the ground such as how to improve the performance, later go to to deal with problems on the ground.
Sunmide75IL amide amine, normal temperature, low viscosity, medium can use time, the ratio range is wide, concrete glue is sticky, alone or with other crosslinking agent use to improve crosslinking speed and crosslinking performance. Used for concrete primer and paint, mortar, concrete mending, ground flat color sand, electronic sealant, casting, general adhesive.
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.
Chemical differences mainly reflected in the performance of oil resistance, resistant to oil/water mixed, acid resistance and solvent resistance, the common fault of the epoxy resin is poor resistance to acid and acetone solvent, ketimine underwater epoxy crosslinking agent, due to its molecular structure contains groups of water molecules, and so the poor water resistance and salt fog resistance, no.t31.welcome crosslinking agent, crosslinking agent 651 oil-water mixed resistance is poorer, crosslinking agent, crosslinking agent 593 810 oil resistance and oil/water mixed resistance is poorer, no.t31.welcome, 651, 810, and 593 crosslinking agent of other performance is pretty good, comprehensive comparison of chemical properties, 2040 crosslinking agent has excellent resistance to chemical corrosion.
When choosing crosslinking agent, should according to the environment to determine the varieties and quantities of crosslinking agent, such as in damp environment, available ketone imide and 810 crosslinking agent, and ketone imide crosslinking agent is influenced by water is larger; In the high temperature environment, it can be used to improve the application period of paint by using the crosslinking agent of the gel time.
The overall effect should be considered in terms of dosage, such as the use of 651 crosslinking agents to not only consider the drying rate but also affect its mechanical and chemical properties.
As the cross-linking agent of water glass, the market needs this kind of products with excellent performance and no pollution, and the prospect is very broad. Therefore, synthesis of polymeric aluminum phosphate with cheap raw materials, reduce the price of the product, and the surface treatment technology to improve their adaptability, to expand sodium silicate in coatings, building materials, the application of blast furnace grouting, etc.
The ratio of two double bonds in linear unsaturated polyester molecules with two double bonds of antitype double bond and cis double bond. The higher the anti-type double bond content, the higher the crosslinking degree.
There should be enough styrene content in the resin, too much or too little will cause the resins to cross the link.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Chemical differences mainly reflected in the performance of oil resistance, resistant to oil/water mixed, acid resistance and solvent resistance, the common fault of the epoxy resin is poor resistance to acid and acetone solvent, ketimine underwater epoxy crosslinking agent, due to its molecular structure contains groups of water molecules, and so the poor water resistance and salt fog resistance, no.t31.welcome crosslinking agent, crosslinking agent 651 oil-water mixed resistance is poorer, crosslinking agent, crosslinking agent 593 810 oil resistance and oil/water mixed resistance is poorer, no.t31.welcome, 651, 810, and 593 crosslinking agent of other performance is pretty good, comprehensive comparison of chemical properties, 2040 crosslinking agent has excellent resistance to chemical corrosion.
When choosing crosslinking agent, should according to the environment to determine the varieties and quantities of crosslinking agent, such as in damp environment, available ketone imide and 810 crosslinking agent, and ketone imide crosslinking agent is influenced by water is larger; In the high temperature environment, it can be used to improve the application period of paint by using the crosslinking agent of the gel time.
The overall effect should be considered in terms of dosage, such as the use of 651 crosslinking agents to not only consider the drying rate but also affect its mechanical and chemical properties.
As the cross-linking agent of water glass, the market needs this kind of products with excellent performance and no pollution, and the prospect is very broad. Therefore, synthesis of polymeric aluminum phosphate with cheap raw materials, reduce the price of the product, and the surface treatment technology to improve their adaptability, to expand sodium silicate in coatings, building materials, the application of blast furnace grouting, etc.
The ratio of two double bonds in linear unsaturated polyester molecules with two double bonds of antitype double bond and cis double bond. The higher the anti-type double bond content, the higher the crosslinking degree.
There should be enough styrene content in the resin, too much or too little will cause the resins to cross the link.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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