News Details
Functional coating crosslinking agent
2017-8-21 18:14:40
Functional coating crosslinking agent
Due to the development of a new structure and excellent performance of epoxy resin, it is not possible to adapt to the resin modification requirements. Functional couplets with special functions will become the market darlings.
Compared with traditional crosslinking agents, functional couplets usually have excellent performance of quick crosslinking, low temperature crosslinking, toughening and flame retardant.
With the development of new crosslinking technology, the powder coating crosslinking agent is also developing.
Should further looking for crosslinking temperature is lower, crosslinking, add more fully heat smaller, more energy saving material, and the coating in good condition, good flexibility, good resistance to hydrolysis and low moisture absorption material, or low viscosity, high permeability, excellent storage stability and good applicability materials, powder coating agent and the function of sexual intercourse.
Certain, thermosetting resin adhesives such as epoxy resin, phenolic resin, and crosslinked unsaturated polyester resin adhesives after low extension, and large brittleness, when bonding parts under external force is easy to produce cracks, and rapidly expand, result in the crack of the rubber, not fatigue resistance, not for the use of structural adhesive. Therefore, it is necessary to reduce brittleness, increase toughness, and enhance the bearing strength. Substances that reduce brittleness and increase toughness without affecting the other main properties of adhesives are toughening agents. It can be divided into rubber toughening agent and thermoplastic elastomers.
Toughening is the substance that increases the flexibility of the adhesive film. Certain, thermosetting resin adhesives such as epoxy resin, phenolic resin, and crosslinked unsaturated polyester resin adhesives after low extension, and large brittleness, when bonding parts under external force is easy to produce cracks, and rapidly expand, result in the crack of the rubber, not fatigue resistance, not for the use of structural adhesive. Therefore, it is necessary to reduce brittleness, increase toughness, and enhance the bearing strength. Substances that reduce brittleness and increase toughness without affecting the other main properties of adhesives are known as toughening agents.
Chinese name: Diethyl toluene diamine(DETDA)
Due to the development of a new structure and excellent performance of epoxy resin, it is not possible to adapt to the resin modification requirements. Functional couplets with special functions will become the market darlings.
Compared with traditional crosslinking agents, functional couplets usually have excellent performance of quick crosslinking, low temperature crosslinking, toughening and flame retardant.
With the development of new crosslinking technology, the powder coating crosslinking agent is also developing.
Should further looking for crosslinking temperature is lower, crosslinking, add more fully heat smaller, more energy saving material, and the coating in good condition, good flexibility, good resistance to hydrolysis and low moisture absorption material, or low viscosity, high permeability, excellent storage stability and good applicability materials, powder coating agent and the function of sexual intercourse.
Certain, thermosetting resin adhesives such as epoxy resin, phenolic resin, and crosslinked unsaturated polyester resin adhesives after low extension, and large brittleness, when bonding parts under external force is easy to produce cracks, and rapidly expand, result in the crack of the rubber, not fatigue resistance, not for the use of structural adhesive. Therefore, it is necessary to reduce brittleness, increase toughness, and enhance the bearing strength. Substances that reduce brittleness and increase toughness without affecting the other main properties of adhesives are toughening agents. It can be divided into rubber toughening agent and thermoplastic elastomers.
Toughening is the substance that increases the flexibility of the adhesive film. Certain, thermosetting resin adhesives such as epoxy resin, phenolic resin, and crosslinked unsaturated polyester resin adhesives after low extension, and large brittleness, when bonding parts under external force is easy to produce cracks, and rapidly expand, result in the crack of the rubber, not fatigue resistance, not for the use of structural adhesive. Therefore, it is necessary to reduce brittleness, increase toughness, and enhance the bearing strength. Substances that reduce brittleness and increase toughness without affecting the other main properties of adhesives are known as toughening agents.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
Toughening agent generally contain active group, can react with resin, crosslinking is not fully compatible, after sometimes split phase, get ideal toughening effect, thermal deformation temperature is constant or dropped, with little, and shock resistance improved significantly. Some low molecular liquid or as plasticizer join resin, although also can reduce the brittleness, but rigidity, strength, heat distortion temperature dropped substantially, can not meet the requirement of the structural adhesive, therefore, plasticizer and toughening agent is completely different.
The low temperature construction of epoxy coating in winter is slow, especially for the polyamide variety. And China has a vast territory, many areas winter - summer temperature difference is very large. In particular, seasonal alternation is often a product in one area with normal use, while in another area, there will be problems, even adjustment and change of formula.
For epoxy floor coating, use common polyamide crosslinking agent, the crosslinking slowly under 5 ℃, and seriously affect the construction speed, a lot of inconvenience to the construction.
Is worth pointing out, on the market some less than 5 ℃ in dry environment still has good performance of epoxy floor coating products, more is to use high molecular weight epoxy resin and isocyanate crosslinking agent made of polyurethane epoxy floor paint.
Floor coating, for example, a goods, a group b points can be used alone and drying, a mixed in point b can also use and dry, in fact, the coating product strictly should belong to pu floor coating.
It is dry because of the high molecular weight of epoxy resin. The dry part of group b is the solvent volatilization. On the other hand, isocyanate is linked with moisture in the air. The mixing and drying of the group a is due to the volatilization of the solvent. On the other hand, it is due to the reaction of isocyanate in the hydroxyl group and the group b in the group.
The nx-2040 crosslinking agent is a kind of epoxy modified amine crosslinking agent. This type of epoxy modified amine crosslinking agent is often encountered in the work of epoxy coating construction construction condition, construction substrate for coating and the influence of the season and the influence of temperature change on the paint two problems. The characteristics of modified amine crosslinking agent are that the epoxy coating system can be quickly crosslinked and high crosslinking in low temperature conditions, which is 40% to 50% higher than polyamide crosslinking agent. The final crosslinking performance of the film can also be very high.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Toughening agent generally contain active group, can react with resin, crosslinking is not fully compatible, after sometimes split phase, get ideal toughening effect, thermal deformation temperature is constant or dropped, with little, and shock resistance improved significantly. Some low molecular liquid or as plasticizer join resin, although also can reduce the brittleness, but rigidity, strength, heat distortion temperature dropped substantially, can not meet the requirement of the structural adhesive, therefore, plasticizer and toughening agent is completely different.
The low temperature construction of epoxy coating in winter is slow, especially for the polyamide variety. And China has a vast territory, many areas winter - summer temperature difference is very large. In particular, seasonal alternation is often a product in one area with normal use, while in another area, there will be problems, even adjustment and change of formula.
For epoxy floor coating, use common polyamide crosslinking agent, the crosslinking slowly under 5 ℃, and seriously affect the construction speed, a lot of inconvenience to the construction.
Is worth pointing out, on the market some less than 5 ℃ in dry environment still has good performance of epoxy floor coating products, more is to use high molecular weight epoxy resin and isocyanate crosslinking agent made of polyurethane epoxy floor paint.
Floor coating, for example, a goods, a group b points can be used alone and drying, a mixed in point b can also use and dry, in fact, the coating product strictly should belong to pu floor coating.
It is dry because of the high molecular weight of epoxy resin. The dry part of group b is the solvent volatilization. On the other hand, isocyanate is linked with moisture in the air. The mixing and drying of the group a is due to the volatilization of the solvent. On the other hand, it is due to the reaction of isocyanate in the hydroxyl group and the group b in the group.
The nx-2040 crosslinking agent is a kind of epoxy modified amine crosslinking agent. This type of epoxy modified amine crosslinking agent is often encountered in the work of epoxy coating construction construction condition, construction substrate for coating and the influence of the season and the influence of temperature change on the paint two problems. The characteristics of modified amine crosslinking agent are that the epoxy coating system can be quickly crosslinked and high crosslinking in low temperature conditions, which is 40% to 50% higher than polyamide crosslinking agent. The final crosslinking performance of the film can also be very high.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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