The choice of auxiliary material of PA nylon bellows
Carrier resins used in the MFR for about 2G/10min of thin film grade low density polypropylene PA nylon corrugated tube, so that not only do the carrier and promoter to better mixing, dispersing uniform can also be reached and film based speculation, there are similar to the liquidity, so as to ensure the compatibility of good.
The ideal infrared blocking agents should be reflected infrared light agent and its role should be like a mirror, on the one hand can is transparent to visible light, on the other hand can will come from the soil of the IR reflection and shed. We developed the PA nylon bellows modified masterbatch of moisture added the right amount of silicate filler (New calcined kaolin and 1250 mesh). At present, the effect of infrared light blocking effect of polypropylene PA nylon corrugated tube is better than that of carbonate. In addition to this material has good insulation properties, but also has good transparency.
In the 75%-90% wavelength range of 7-25um, the infrared transmittance of the PA nylon corrugated tube is 365-50%, and the transmittance of the visible light transmittance is 25%-55%. Visible, this PA nylon bellows in the daytime can receive a lot of sunshine, while in the night and in the middle of the infrared heat, so as to achieve the insulation effect.
A new type of rare earth aluminate coupling agent is used in the production of PA nylon corrugated pipe. The surface of kaolin is treated by using this kind of additives, which can make the surface of the inorganic filler powder coated with the activated, and can make the inorganic material and organic carrier of the compatible cross linked.
General use of solid paraffin and stearic acid to improve the performance of the PA nylon bellows. The production process of insulation masterbatch can extrusion granulation method and double screw single screw extruder with a refining method, plastic. We use double screw extrusion granulation, the process flow is as follows: the calcined kaolin drying special treatment coupling agent activated auxiliary agent resin mixed with extrusion cooling and cutting grain size PA nylon corrugated pipe
Double screw extruder is used to granulation, which is superior to the method of the single screw and the plastic method. Double screw extruder, the resin and mixed in a mixing machine after, after the engagement between the two screw twin-screw extruder, PA nylon bellows material in the screw to transfer trajectory "make" infinity "movement. And in screw design of reflux area, mixing zone transient stagnation zone increases, material can get better blending to uniformly dispersed
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