What is PVC fiber reinforced hose? Is it toxic? How to use it correctlyWhat is PVC fiber reinforced hose? Is it toxic? How to use it correctly
Pvc fiber-reinforced hose is a composite material that is mainly used for agricultural irrigation and spraying, and it can be seen everywhere in daily life. However, many people do not know much about it. Today, the editor will introduce the content of pvc fiber reinforced hose.
PVC fiber reinforced hose and pvc grid tube, commonly known as plastic snake skin tube, suitable for pressure or corrosive gas and liquid transportation, widely used in machinery, coal mines, petroleum, chemical industry, non-irrigation, construction, civil (Solar water heater, gas tank) and other fields. It is also widely used for garden and lawn watering. It is mainly composed of automatic feeding machine, extruder, spray water tank, tractor, winding machine, hot melt machine, winder and so on.
Is the PVC fiber reinforced hose toxic?
If the PVC plasticizer is volatilized, the plasticizer of the hose is mainly dioxin, dimethyl ester, etc. This type of plasticizer contains benzene. If it is in such an environment for a long time, it may cause cancer. note.
How are the two layers of PVC inside and outside of the PVC fiber reinforced hose bonded so firmly?
The two extruders are co-extruded. First extrude the inner tube, then weave the reinforcing fiber through the braiding machine, and then extrude the outer tube through the die of the second extruder. It is not difficult to understand that the two layers are tightly integrated. The processing technology of the extruder: his screw rib depth is gradual, divided into feeding section (front, deep is large space), compression section (deeper depth), melting section (shallower), homogenization section (sometimes The melting section merges into one); the raw material enters the feeding section, becomes soft when heated, and is pushed forward by the screw to reach the compression section. The temperature setting of this section is higher than that of the feeding section. Extruded through the die, the temperature is still very high, and the surface is very sticky. When the inner tube passes through the outer die (its temperature is above 120 degrees), the outer surface melts and naturally combines with the raw materials of the second extruder. In fact, the PPR tube that appeared later replaced the aluminum-plastic tube quickly because the joints were fusion welded and never leaked.
Good PVC reinforced pipes, non-toxic organic tins are used as stabilizers, and dioctyl ester or dibutyl ester is used as plasticizers, and epoxy soybean oil is used. If there is a requirement for cold brittleness (it cannot be brittle at low temperature) The plasticizer should use "cold protection oil". In addition, there are many small factories. The plasticizer uses chlorinated paraffin, and the aging soon is a fake product.
Well, it should be noted that during the use of PVC fiber reinforced hoses, lead salt stabilizers will be added, and lead is toxic to humans; PVC fiber reinforced hoses contain heavy metals that will precipitate out into drinking water and endanger human health. Therefore, please don't drink the water of PVC fiber reinforced hose directly. Long-term consumption may cause cancer risk.