▎ 摘　　要

NOVELTY - Wide-angle cloth-wrapped V-belt comprises covering cloth layer and inner core layer, the inner core layer sequentially includes buffer layer, framework layer and primer layer from outside to inside; the buffer layer comprises chlorosulfonated polyethylene, chloroprene rubber, amino-terminated hyperbranched polysiloxane HPSi-NH2, magnesium oxide, coupling agent, fluorinated graphene, filler, stearic acid, and antioxidant; the primer layer comprises 10-15 wt.% thermoplastic polyester elastomer TPEE, 10-15 wt.% styrene butadiene rubber, 4-6 wt.% zinc oxide nanofibers, 15-25 wt.% calcium carbonate, 3-5 wt.% 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5,5'-sodium disulfonate, 2-4 wt.% silane coupling agent KH570, 1-2 wt.% phosphorus pentoxide, 0.8-1.2 wt.% polyphosphoric acid, 1-3 wt.% stearic acid, 2-3 wt.% peroxide vulcanizing agent DCP, and chloroprene rubber (remaining amount). USE - The wide-angle cloth-wrapped V-belt used in back pressing wheel and clutch wheel system, and used in various machinery. ADVANTAGE - The wide-angle cloth-wrapped V-belt: has easy installation, small footprint, high transmission efficiency, low noise, excellent interlayer adhesion strength, mechanical and mechanical properties, flexibility and fatigue resistance, and has long service life. DETAILED DESCRIPTION - Wide-angle cloth-wrapped V-belt comprises covering cloth layer and inner core layer, the inner core layer sequentially includes buffer layer, framework layer and primer layer from outside to inside; the buffer layer comprises 15-25 pts. wt. chlorosulfonated polyethylene, 100 pts. wt. chloroprene rubber, 3-5 pts. wt. amino-terminated hyperbranched polysiloxane HPSi-NH2, 6-10 pts. wt. magnesium oxide, 2-4 pts. wt. coupling agent, 8-10 pts. wt. fluorinated graphene, 25-35 pts. wt. filler, 1-3 pts. wt. stearic acid, and 3-5 pts. wt. antioxidant; the primer layer comprises 10-15 wt.% thermoplastic polyester elastomer TPEE, 10-15 wt.% styrene butadiene rubber, 4-6 wt.% zinc oxide nanofibers, 15-25 wt.% calcium carbonate, 3-5 wt.% 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5,5'-sodium disulfonate, 2-4 wt.% silane coupling agent KH570, 1-2 wt.% phosphorus pentoxide, 0.8-1.2 wt.% polyphosphoric acid, 1-3 wt.% stearic acid, 2-3 wt.% peroxide vulcanizing agent DCP, and chloroprene rubber (remaining amount). An INDEPENDENT CLAIM is also included for preparing the wide-angle cloth-wrapped V-belt comprising mixing, forming, cutting, wrapping, vulcanizing and demolding steps; the vulcanization adopts circular mold steam vulcanization, vulcanization temperature is 170-180 ℃, the external vapor pressure is 0.9-1.5 MPa, the internal vapor pressure is 0.4-0.6 MPa, and time is 35-45 minutes.