Lub tsheb fuse yog dab tsi?

Lub bumper ntawm lub tsheb yog ib qho khoom siv (consumable part) ntawm lub cev, uas nyob rau pem hauv ntej ntawm lub tsheb (hu ua lub pem hauv ntej bumper) thiab lub rear ntawm lub tsheb (hu ua rear bumper).

Tam sim no, pem hauv ntej thiab nram qab bumpers ntawm domestic tsheb feem ntau yog ua los ntawm toughened (hloov) polypropylene (PP) cov ntaub ntawv raws li raw cov ntaub ntawv rau txhaj tshuaj molding. Thaum tshav kub kub, qhov ntom ntom (0.90g/cm3), yog lub teeb tshaj plaws ntawm cov khoom siv dav dav- lub hom phiaj plastics, muaj kev tiv thaiv corrosion siab (lub zog tensile 30MPa), thiab nws cov khoom muaj lub zog zoo, rigidity thiab pob tshab . Qhov tsis zoo yog tias qhov ntsuas kub tsis zoo yog qhov tsis zoo (nws yog cov khoom siv sib xyaw ua ke uas muaj peb hom kev cuam tshuam -resistant PP copolymer, styrene -raws li elastomer thiab polyolefin-raws li roj hmab, Nrog rau siab rigidity, cuam tshuam tsis kam, khawb kuj thiab pleev xim, txhaj tshuaj molding Tom qab tsim lub bumper yog ntsia, nws yuav tsis tawg nyob rau hauv qhov kev cuam tshuam ntawm 8 km / h, thiab muaj lub elasticity ntawm rov qab, kev ua tau zoo zoo li PU. , thiab tus nqi raug txo los ntawm 10 feem pua ​​​​20 feem pua).