News Details
Crosslinking agent for heterocyclic amine coating
2017-7-16 17:21:06
Crosslinking agent for heterocyclic amine coating
Diamine of the Marine ring structure was found in the crosslinking agent of heterocyclic amine: amino ring tripolyphosphoric acid
When the crosslinking agent of heterocyclic amine and the epoxy resin are used, the use is different and the reaction mechanism is different. When using chemical metering, the crosslinking agent reacts with the epoxy resin. When the dosage is low (5 ~ 10mpr), it is crosslinked through ion polymerization. Usage is not at the same time, the heating effect is also different, quantity is small, in 180 ℃ heat also is very small, when using chemical calculation, heat quantity is big, more than the crosslinking temperature.
The application of heterocyclic amine crosslinking agent in high temperature is long and the viscosity is low, and it is allowed to fill a large amount of filler. This kind of crosslinking agent of epoxy resin composition can for a long period of time when 20 ~ 30 ℃ crosslinking, can be used as a latent sexual intercourse agent effectively.
Heterocyclic amine crosslinking agent: diazolone (DHPZ) heterocyclic amine crosslinking agent has high heat resistance.
Rubber rollers are used to squeeze out excess epoxy resin before gel. Slowly pull the rubber roller on the fabric, low at one end, make a certain Angle, use the appropriate pressure, and do some tapping at the overlap. Under enough pressure, the excess epoxy resin will be allowed to leave its surface, but the pressure is not enough to dry. The area of excessive epoxy resin will appear a bright area, moistening the surface to appear evenly transparent, and the cloth is smooth. Finally, the entire fabric is coated with epoxy resin coating. Overdose and overlap cloth after epoxy resin cross linking. Such a cloth would be easy to cut with a sharp knife. If the cloth needs to be cut neatly and overlapped, the following operation can be done:
Put the ruler of the metal in a straight line on the edge of the overlap. Cut through the two layers of the cloth with a sharp knife. Remove the top at the time of refurbishment, and then bring up the opposite cutting of the opposite side to remove and refit. Rehumidifying the lower side of the edge with epoxy resin to smooth it.
Chinese name: Diethyl toluene diamine(DETDA)
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).
Remove the fasteners if you know that you will want to remove the fasteners, you can cover the bolts with wax or remover (the contamination surface is sufficient to protect a good join). Remove one end of the fastener connection with a heating tool iron or propane torch to remove a permanent bond. Use heat shield to protect surrounding areas. Heating will cause the fastener to fall, and the epoxy resin it touches will soften. In about 120F epoxy resin will become soft enough to allow fastener to fall off. For longer or larger diameter fasteners will require more time to heat fasteners.
Plastic surgery is the filling of low-lying area areas that are examined with eyes or touch, making them appropriate and "fair" to match the surrounding surfaces. After the main structure is assembled, the final shaping can be easily applied to the WESTSYSTEM epoxy resin and low-density packing.
The result should be a near-perfect docking, eliminating twice the thickness of the cloth. If appearance is not important, a joint is much better than a pair of joints, so you can make the final coating without having to overlap and trim. 8. Cover the surface until it reaches its final crosslink.
The following is the final coating phase. It will have to be coated for 2 or 3 times to make the fabric fully coated and will not affect the final sand of the cloth. Wet method chooses to take the fabric or tape to the wet epoxy resin surface. This is not a preferred method, especially when the cloth is large, because it is very difficult to remove the wrinkles or adjust the position of the cloth on the wet surface. However, in some cases this method can be useful or necessary.
Prepare the surface for adhesion. The size of the cloth is suitable for use. Scroll the position of the cloth so that it can be rolled easily in the future. 2. Coat the surface with an epoxy resin. Spread the fabric over the wet epoxy resin to the desired position. It will be tight at the position surface. If you are using a cloth vertically or overhead, you can use a slightly thickened epoxy resin until it becomes sticky.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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