How can it be regarded as a high-quality PVC fiber reinforced hose, which needs to meet at least these basic characteristics: high pressure resistance, aging resistance, softness, toughness, wear resistance, resistance, vibration resistance, cold resistance, corrosion resistance, acid resistance Alkaline burning, heat is not soft couch product, light and durable.
However, the PVC gas hoses produced by most enterprises and manufacturers cannot meet our basic working performance at all, but there will be various problems in use, such as the oven can not withstand high temperature and burst, and the oven tensile test test technology is not enough. Of course, in addition to the production and processing technology, temperature control, extrusion speed, etc., it is more important to select the right raw materials. The main building material for the production of PVC hoses is polyvinyl chloride (PVC) resin, and PVC itself is inelastic and flexible chain structure, so its low temperature resistance performance is poor. As an elastomer, powder nitrile rubber NBR-P8300 has high compatibility with PVC, and forms an "island" structure when blended with PVC fiber reinforced hose. The uniform mixing economic system in this way can effectively improve the flexibility of PVC, and its low temperature resistance performance analysis has been reasonably and effectively managed to improve. Because of its fine particles and good liquidity in the dispersion market, rubber nanoparticles are evenly distributed in the mixed material. Elastomer The soft point, so as to reduce the wear and tear of PVC soft products.
The use of powdered nitrile rubber P8300 is also of great help to the durability of the plasticizer. Most PVC gas hoses use low molecular weight substances. After adding PNBR, the resilience of the product can be increased, the use of plasticizers can be reduced, and the migration speed of plasticizers can be reduced due to the attraction of plasticizers.
