The correct choice of degreaser in the processing of plastic products

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The name of white electric oil is n-heptane, which has high fat solubility and high volatility. It has strong decontamination ability in electroplating processing of plastic products, so it is often used as a cleaning agent in the industry. It is used in hardware, electronics and plastic plating. The use is particularly extensive. However, white oil is actually a very dangerous substance.

Someone may have to ask? White oil is so dangerous, don’t you use it? Or what are the costs to be provided with the perfect conditions? The cleaning process of the enterprise must of course continue, but it does not need to be so troublesome to reach the requirements. In fact, there have been cleaning products that have been specially replaced by white oil in the market.

In the appearance of plastic products, such as ABS, PC, TPU and other raw materials injection molding process, the use of release agent causes the material to be stained with oil, oil spots and oil pockets appear during plating, in order to solve this problem Phenomenon, electroplating occupation is generally the use of white oil to soak and clean. The plastic parts are invisible and invisible, but after they are produced, they find a pile of bad oil.

The catalyst is mainly used in PU foam plastics, and the effect is to accelerate the reaction rate, play a useful manipulation effect on the foaming process, and establish a good balance between the chain growth reaction and the foaming.

Plastic foaming formula planning points

The foaming agent and the foaming aid, regarding the foaming of the solid resin, such as the differentiation temperature and the melting temperature do not match, can participate in the foaming accelerator to adjust, if in order to modify the foam quality, can participate in the nucleating agent adjustment. Regarding the foaming of the liquid resin, it is possible to participate in the catalyst in order to promote foaming, and to participate in the foam stabilizer in order to improve the foam quality. The particle size of the foaming agent, the smaller the particle size of the foaming agent, the more uniform the swell in the resin, the more the number of cells per unit volume, and the smaller the cells.

Differentiation temperature and cross-linking temperature. For a class of resins whose melt viscosity decreases rapidly with temperature and the melt strength is low, it is necessary to participate in the cross-linking agent for the progress of the melt strength. The cross-linking temperature of the cross-linking agent should be lower than that of the cross-linking temperature. The differentiation temperature of the foaming agent. The temperature scale of crosslinking and foaming is the upper limit of the lowering temperature of the blowing agent to the crosslinking temperature of the crosslinking agent.

The differentiation temperature and the melting temperature, with respect to the thermoplastic resin, the differentiation temperature of the blowing agent should be slightly higher than the melting temperature of the resin to ensure that the gas occurs in the melt, and there is a satisfactory expansion space foaming. Regarding the thermosetting resin, the differentiation temperature of the blowing agent should be slightly higher than the curing temperature of the resin.