News Details
Coating of crosslinking agent modified
2017-3-18 17:37:45
Coating of crosslinking agent modified,Here crosslinking agent of modified amine mainly for the modification of crosslinking agent, especially polyether amine, ring Ann, aromatic amine, polyamide and other issues. Because crosslinking agent can variety design, lead to the diversity of epoxy formula and extensive USES, and crosslinking agent resin in comparison with the change of transformation, both ease and has great advantage on the price.
Take on a book of epoxy resin, it will say Andrew modification methods, such as the addition of modified, mannich reaction, etc., but basically is the basic theory or summary, has no real actual combat experience.
The collocation of different amine: amine mutual collocation can draw the corresponding performance, this is according to the performance of the estimation formula of collocation, for example D230 is long operation time of low viscosity amine crosslinking agent, special apply to long time operation conditions, but winter is often need to add some IPDA, or 1, 3 - bac to speed up the reaction rate, here according to the requirement of the crosslinking rate is involved with Ann type.
Modified amine crosslinking agent: amine of crosslinking agent is the most conventional modified with epoxy resin to modification, modification, in comparison with unmodified crosslinking agent can improve the reaction speed, reducing bleaching, but also had significantly different toughness and strength, such as air chemical industry in 1618, has been specializing in this product, does have some difference between modification before and after modification.
In particular is modified according to different requirements, such as toughening, underwater, low temperature, with cashew phenol modified mannich reaction products, often with free of the cashew phenol, time is long, can appear the symptom of surface greasy floating color even. This is the common fault of the domestic current cashew phenol modified.
Modified crosslinking agent process sequence: in the process of crosslinking agent of modification, material to join order is important; Especially in the field of polyamide crosslinking agent, mainly used in the field of anti-corrosion, polyamide in polyamide anti-corrosion crosslinking agent, often including solvent, polyamide, nonylphenol, K54, E51, solvent is the most appropriate sequence, polyamide, nonylphenol, resin and K54 immediately, if you add subsequent K54, very prone to the phenomenon of implosion, we studied the mechanism of the concrete, and we are interested in can be further discussion, here can't to do public table theory.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
In crosslinking agent formula design, sometimes it is difficult to achieve a single amine performance, often require the collocation of a few amine, but also need to modification, modification of the process is also very important, and modified in the process of charging order is also very important, so a complete formula should be after careful consideration of each step of the way.
In the design of epoxy formula, it mainly referred to some of the common USES, such as floor, soft rubber, flat rubber, resin, resin, module, anticorrosive glue mentioned some design methods, and so on.
Special requirement in epoxy waterproofing, density field, such as anti-corrosion field, require good waterproof performance, so the epoxy formula requires the crosslink density is high, junction, this design is the process of epoxy excess may be required, so that I too much epoxy resin to the crosslinking, improve the density, dosage of theory in general amine dosage of 60-70%, this is also how some areas to reduce the product cost.
of course, in addition to do hard, can do soft epoxy resin, such as soft rubber, epoxy signs, rubber article lamp, etc., conventional thinking is more thinner, if more thinner, it is easy to broken, crush, resilience is very poor, so sometimes this way is not recommended.
Similar to the mechanism of rubber, as far as possible to reduce the degree of crosslinking of epoxy resin, it is to overload, according to the requirement of the softness can design the security degree of excess, this is also the reason of epoxy more soft more expensive. To mention of elastic epoxy resin on the market, is ordinary epoxy resin with double light degree of diluent.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
Take on a book of epoxy resin, it will say Andrew modification methods, such as the addition of modified, mannich reaction, etc., but basically is the basic theory or summary, has no real actual combat experience.
The collocation of different amine: amine mutual collocation can draw the corresponding performance, this is according to the performance of the estimation formula of collocation, for example D230 is long operation time of low viscosity amine crosslinking agent, special apply to long time operation conditions, but winter is often need to add some IPDA, or 1, 3 - bac to speed up the reaction rate, here according to the requirement of the crosslinking rate is involved with Ann type.
Modified amine crosslinking agent: amine of crosslinking agent is the most conventional modified with epoxy resin to modification, modification, in comparison with unmodified crosslinking agent can improve the reaction speed, reducing bleaching, but also had significantly different toughness and strength, such as air chemical industry in 1618, has been specializing in this product, does have some difference between modification before and after modification.
In particular is modified according to different requirements, such as toughening, underwater, low temperature, with cashew phenol modified mannich reaction products, often with free of the cashew phenol, time is long, can appear the symptom of surface greasy floating color even. This is the common fault of the domestic current cashew phenol modified.
Modified crosslinking agent process sequence: in the process of crosslinking agent of modification, material to join order is important; Especially in the field of polyamide crosslinking agent, mainly used in the field of anti-corrosion, polyamide in polyamide anti-corrosion crosslinking agent, often including solvent, polyamide, nonylphenol, K54, E51, solvent is the most appropriate sequence, polyamide, nonylphenol, resin and K54 immediately, if you add subsequent K54, very prone to the phenomenon of implosion, we studied the mechanism of the concrete, and we are interested in can be further discussion, here can't to do public table theory.
Chinese name: Diethyl toluene diamine(DETDA)
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Density 1.022
Viscosity (20 ℃) ??mPa·ss290±10
Pour Point ℃-9
Boiling point of310°C
Flash Point°C161.1°C
In crosslinking agent formula design, sometimes it is difficult to achieve a single amine performance, often require the collocation of a few amine, but also need to modification, modification of the process is also very important, and modified in the process of charging order is also very important, so a complete formula should be after careful consideration of each step of the way.
In the design of epoxy formula, it mainly referred to some of the common USES, such as floor, soft rubber, flat rubber, resin, resin, module, anticorrosive glue mentioned some design methods, and so on.
Special requirement in epoxy waterproofing, density field, such as anti-corrosion field, require good waterproof performance, so the epoxy formula requires the crosslink density is high, junction, this design is the process of epoxy excess may be required, so that I too much epoxy resin to the crosslinking, improve the density, dosage of theory in general amine dosage of 60-70%, this is also how some areas to reduce the product cost.
of course, in addition to do hard, can do soft epoxy resin, such as soft rubber, epoxy signs, rubber article lamp, etc., conventional thinking is more thinner, if more thinner, it is easy to broken, crush, resilience is very poor, so sometimes this way is not recommended.
Similar to the mechanism of rubber, as far as possible to reduce the degree of crosslinking of epoxy resin, it is to overload, according to the requirement of the softness can design the security degree of excess, this is also the reason of epoxy more soft more expensive. To mention of elastic epoxy resin on the market, is ordinary epoxy resin with double light degree of diluent.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Diethyl toluene diamine(DETDA) http://www.yaruichem.com
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