The invention discloses a low-temperature-resistant high
impact PVC (
polyvinyl chloride) tubular product and a preparation method thereof. The low-temperature-resistant high
impact PVC tubular product is prepared from the following raw materials in parts by weight: 38-54 parts of SG-7 type PVC resin, 22-36 parts of ACS resin, 10-15 parts of
polyurethane thermoplastic elastomer, 11-17 parts of
graphite, 6-9 parts of
polytetrafluoroethylene micro
powder, 12-16 parts of carbon nanofibers, 10-15 parts of
tetraethylene glycol diheptylate, 8-12 parts of
glycerol trioleate, 4-6 parts of oxidized polyethlene
wax, 5-10 parts of dioctyl azelate, 10-15 parts of
triethylene glycol di-2-ethylhexoate, 3-5 parts of
ethylene bis stearamide, 14-18 parts of aluminum
powder, 15-20 parts of
fumed silica, 5-10 parts of
sludge dry powder, 10-15 parts of pelelith
powder, 2-3 parts of lead cyanurate, 1-2 parts of a
calcium-
zinc composite stabilizer, 10-15 parts of composite nano powder, 1.5-2.5 parts of tri(sulfydryl
ethyl ester stearate)
antimony, 1-2 parts of an
antioxidant 1035, and 1-2 parts of an
antioxidant 168. The PVC tubular product has the characteristics of low
temperature resistance, high
impact strength and high
toughness; on the premise of the high impact strength, the low-
temperature resistance and the
toughness of the PVC tubular product are greatly improved, so that the tubular product can be normally used for a long time at (-)50 DEG C, and thus, the service life of the PVC tubular product is prolonged.