Be called the colophony of annulus oxygen vinyl of the person that anticorrosive course of study aboves average makes many sided also have application in other, include automobile manufacturing industry among them. Introduce according to expert of epoxy resin guild, vinyl ester colophony can make the structural member of all sorts of car, use high strenth vinyl successfully like car tire ester colophony suppress, reduce 40~50% than metallic tire weight, in electric machinery equipment can fall to run above 10 years to maintain enough mechanical strength and dimension stability continuously in 160~200 ℃ . Ester colophony has annulus oxygen vinyl taller percentage elongation place has relatively beautiful shear strength, can bear than ISO polyester taller wallop has the good denaturation that fight squirm and fatigue resistance, together with shapes goodly fluidity makes its are on component of production car SMC, win compelling application. The expert says, these component include wheel, seat, medicinal powder mouth of heat wearing, bar board, engine a powerful person or family is covered etc. Wheel, seat, medicinal powder mouth of heat wearing, bar board, does engine a powerful person or family cover application specific how? Ford Motor Corporation uses vinyl ester resin, mingle suppress of fibre glass of tropism of 65% not in the proper way to control seat of car depart type, its cost reachs steel seat only 75% , the 63%(11.6kg) that weight is steel seat. General motors company (the engine a powerful person that the brunt model place of GE) uses is covered and overcome Laisile Motor Corporation (a powerful person covers all engine of Crysler) is to use SMC and BMC to make, matrix colophony basically uses vinyl ester resin. Before paragraph time overcomes Laisile Motor Corporation covered material to have more comprehensive opinion to all sorts of a powerful person, actor or actress comparative analysis indicates weakness. Introduce according to expert of epoxy resin guild: Ban gold material has an advantage on total cost but much component unifinication is difficult, gross is big, it is the 2 hair source of student of noise, corrosion resistance can be low; The nonferrous metal of other of exterior quality excel of casting aluminous goods, but cost is higher, sound-absorbing and undesirable, corrosion resistance can be poor; Thermoplastic composite material (enhance nylon to give priority to with Bo fine) machinability is advantageous, manufacturing cycle is short, but the problem of ageing of existence high temperature, wear is poorer, dimension is not stabilized and bring about sealing to differ. Because this analysis thinks,SMC and BMC are at present relatively ideal a powerful person covers material. Cytec Industries Inc produces spare parts of engine of Cyglas 695 BMC, it is BMC of a kind of vinyl ester colophony that contains 25% Bo fine goods, include mould pressing to shape lid of valve of air cylinder of car of 5.7 L Cornette, inject one mould pressing shapes of 4.3L 12GM van before when gear chain lid, inject one mould pressing shapes of 5.7L 3GM van before when gear chain lid, lid of valve of 2.7L V6DOHC air cylinder. Expert of epoxy resin guild says, valve of air cylinder of BMC of vinyl ester colophony is built, ℃ of working temperature 138~149, solidify rate is rapid (the goods 45s solidify of thick 3mm, the valve of 1.4~1.8kg is built, 1min solidify) , dimension stability is good, be able to bear or endure chemistry is caustic good. Expert of epoxy resin guild represents future, this kind of material uses big range at vehicle domain, basically depend on component respect, include wheel, seat, medicinal powder mouth of heat wearing, bar board, engine a powerful person or family is covered etc.