Coating oil phenolic amides crosslinking agent

Coating oil phenolic amides crosslinking agent,Polyamide - amine adduct and polyamide usually depends on the tertiary amine to accelerate the crosslinking with epoxy resin, which leads to its crosslinking speed is slower than of cashew shell oil phenolic amides and the color of the poor stability and corrosion protection performance. Cashew nut shell oil phenolic amides chemicals itself can accelerate the crosslinking performance but has no effect on other properties.

With excellent adhesion between substrate to ensure good corrosion protection performance is critical. Usually, the designer does not control the paint recipe, its product construction conditions and coating on the surface of the state. Even suggested that in the coating base material should be properly cleaned before construction, is not unusual for some surface to surface cleaned properly. In order to simulate this kind of situation, need to assess adhesion on the CRS with rust board.

The rusty plate into 60 ℃ of ordinary water 24 hours for processing, then use hot water washing to remove red iron oxide precipitate. Then an eraser dry on paper towels and placed 7 days at room temperature. Therefore, in the plate on the surface of formed a dense uniform layer of rust layer. Most of the system in the rust on the surface of good cross cell adhesion (ASTM D3359-97), which will reduce the risk of failure site construction.

Another common problem is when there is no after sandblasting, grinding or solvent cleaning process on the surface with good adhesion. In a test system, cashew shell oil phenolic amides on the untreated CRS board performance is best, has 5 b cell adhesion. Good adhesion on the surface is smooth can minimize the amount of the required surface pretreatment.

Purpose by using 220 sandpaper polished surface, gently with acetone to wipe the dust, and all the system can well adhesion on the aluminum alloy panel AA2024 T3. CNSL phenolic amides derivatives such as cashew shell oil, because of the cashew phenol long aliphatic side chain can produce good wettability and low surface tension and balance the polarity and the combination of hydrophobicity, so in several kinds of substrate can provide excellent adhesion.




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).


This study contains crosslinking agent can also be recommended for concrete surface. In order to confirm the coating is suitable for concrete, according to ASTM D7234 measuring base 2 # preparation of coatings in dry and wet concrete surface wet film thickness is 25 mil coating adhesion pull method.

Methods of dealing with the wet concrete blocks are to be immersed in water for 24 hours, before coating construction with a paper towel to remove excess water. During the seven days of curing the wet concrete in water has been painted. In the evaluation, for dry and wet concrete, all crosslinker system shows good adhesion, in more than 500 psi (3450000 mpa) open adhesion value of concrete damage appeared.

Cashew shell oil phenolic amides were found for adhesive use, especially the two-component, adhesive for site construction of buildings and structures. These USES requires rapid formation of bond strength, it would soon be put into use and eventually excellent mechanical performance.

Table 5 shows cashew shell oil phenolic amides in liquid epoxy resin and bisphenol A (EEW190) after 40 ℃ / 16 hours after crosslinking cycle has A high tensile, flexural and compressive strength and good flexibility.

This performance can be attributed to its high crosslinking density and CNSL unique chemical structure. In addition, cashew shell oil phenolic amides as long as a few hours crosslinking can obtain high bond strength, this is due to its fast reaction activity.

Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd 

Diethyl toluene diamine(DETDA)  http://www.yaruichem.com