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????ʹ????Ȼ?𽺵???ʷ?Ѿ??кü????????ˡ????ײ??ڷ????´?½?ĺ????з??֣????????????????һ????????Ӳ???˵?ֲ??֭Һ???ɵġ????ײ??ͺ?????̽?ռ????޲????????е??Ե????Ȳ??ѡ?һЩ??Ʒ????Ϊ??Ʒ????ŷ?ޡ????????Ƿ??????ֵ??????ܹ?????Ǧ?ʵĺۼ?????˸???????һ????ͨ??????"???ӣ?rubber??".?????????????????ʵ?Ӣ?????֡????????ʾ????𽺡?

????????ֱ??1839?꣬?????˹ŵ???????Charles Goodyear???ɹ??ؽ???Ȼ?𽺽??????򻯺??𽺲ų?Ϊ??ʹ?ü?ֵ?IJ??ϡ?ͨ???????һ????Ƚ????򻯣?ʵ?????𽺷??????Ľ?????ʹ?𽺾߱??????õĵ??ԡ?Ϊʲô?𽺻??е????أ??????Ƿ???һ???𽺵ķ??ӽṹ????Ȼ?𽺷??ӵ????ڵ???Ϊ?????ϩ??????֪???߷???????????֮??ķ??Ӽ??????????????????ʡ??????У????Ӽ????????????????????Ϊ?????????ϩ???????????????????໥???á??ñ??????????????֣???ÿ???????϶????źܶණ??????????־ͺ??????ˡ??𽺷???֮?????????״?????????𽺵??????ԡ??𽺵ķ??ӱȽ?????ת????Ҳӵ?г?ԣ???˶??ռ䣬???ӵ????г??ֳ?һ?ֲ?????????????Ȼ״̬?????ܵ????????????????Ӱ??ʱ?????ӱ????Գ?һ???Ĺ????ԡ??????ǿ??????????ʱ???𽺷??Ӿ??ֻ?ԭ???IJ?????״̬?ˡ?????????е??Ե?ԭ?????ڷ??Ӽ??????????????ӿ???????ת????????????ȱ???㹻????????????ˣ?????֮??ᷢ???໥??????????Ҳ?ͱ??ֲ??????ˡ????ֻ?????????Ӽ??໥???ƶ??????????ǣ????Ӽ?IJ????Dz??ȶ??ģ??????¶ȵ????߻?ʱ??????Ʋ??ƻ????ɿ???????б?Ҫʹ???????佨????ǿ?̵????ӡ?????ǹŵ????????????򻯷??????򻯹???һ????????140-150?ȵ??¶??½??С???ʱ?ŵ???????С??¯???????˼??ȵ????á??򻯵???Ҫ???ã??򵥵?˵???????ڷ????????????֮???γɽ??????Ӷ?ʹ??????????????????ǿ??

?????ڹ?ȥ?ļ?ǧ??䣬?????????ij?ʹ?õ?һֱ??ľ?????ӣ???????????????Χ???Ͻ??????????ڹŵ???????????ʵ?õ?????֮???1845?꣬Ӣ??????ʦR.W.??ķɭ?ڳ?????Χ????һ?????ʵij????𽺹ܣ?????????????豸??ר????????1890?꣬??̥????ʽ???????г??ϣ?????1895?꣬?????ڸ?????ʽ?????ϡ?????????һ??????????????????ʣ???ȴ??ľͷ???????????ĥ???𽺵????á?????????ܣ????ϳ?????̥????????ƣ?ʹ?˳????˾??ñ??????κ?ʱ?򶼸??????ʡ? ?????????????Ĵ??????ӣ???????????̥???𽺵???????Ҳ????????????֡???˹㷺??Ӧ??ʹ??Ȼ?𽺹???Ӧ??????????????Ͼ????ƣ????????????ƺϳ??𽺡?

?????????????뵽????????Ȼ?𽺵Ľṹ??Ԫ--?????ϩ??????ϳ??𽺡?????1880?꣬??ѧ???Ǿͷ??֣??????ϩ???ù??þͻ?????????????ữ?????????? ???????𽺵????ʡ??»??????????????????????????Ƴɻʼ?????????̥????????ҫ?¹???ѧ????ĸ߳????ա?Ȼ???????????ϩ??Ϊ?ϳ??𽺵?ԭ?ϣ??????????ѣ?һ???????ϩ????Ҫ??Դ??????Ȼ?𽺱?????????????Ȼ?𽺳????У????е??????ϩ??Ԫ??????ͬһ?????ڹ????½??????У??????????ϸ?ذ???һ??һ???ķ??????еģ????˹??ۺ?ʱ?????ϩ??Ԫ?????Ǻ??޹??ɵؾۺ???һ?𣬵õ?????һ?ּȲ?????Ҳ???ǹ????½??????ʡ?????????ȱ???𽺵ĵ??Ժ????ԣ??ò??˶?þͻ??ճ?????Բ?????????????????̥???????ڹ??»?Ļʼ???????Ȼ?Ǹ????⣩??

?????ڵ?һ???????ս?ڼ䣬???????ҷ????¹??˲????˶??׻?????ϩ?ۺ϶??ɼ׻??𽺣??????𽺿??? ?????????????Ҽ۸???????ڵ?һ???????ս?ڼ䣬?¹???Լ??????2500?ּ׻??𽺡??????????𽺵???ѹ???ܲ????룬ս??㱻??̭?ˣ??????Ͼ??ǵ?һ?־???ʵ?ü?ֵ?ĺϳ??𽺡?

??????Լ??1930?꣬?¹????????ö???ϩ??Ϊ???壬????????Ϊ?߻??????ϳ???һ?ֽ????????𽺡???Ϊһ?ֺϳ??𽺣??????𽺶???Ӧ?????ҷ????Ի?????????????ġ??????????干?ۿ??Ը????????𽺵????ܡ????뱽??ϩ???۵õ??????𽺣?Buna-S????????????????Ȼ?𽺼??????ơ???ʵ?ϣ??ڵڶ????????ս?ڼ䣬?¹????Ӿ?????Ϊ?ж????𽺣??𽺹?Ӧ??û?г??????ض?ȱ???? ????Ҳ??ͬ???ķ??????Լ??ľ????ṩ?𽺡?

??????????ս??????о??ϳ??𽺡????Ⱥϳ????ȶ??𽺣???ԭ??ʹ?ȶ??𽺾?????Ȼ???????߱???һЩ????ʴ???ܡ????磬??????????֮????л??ܼ????нϸߵĿ???ʴ???ܣ?Զ??????Ȼ???????????????????͡???ˣ????????????????ó????ȶ???ʵ???ϱ???Ȼ?𽺸?Ϊ???ˡ??ȶ????״?????ر???????????????????????һ?????ںϳ????????Թ??еIJ??ﲢ??һ??ֻ?ܳ䵱??Ȼ???ʵĴ???Ʒ???????????ܹ?????Ȼ???ʸ??á?

????1955??????????????????ھۺ???ϩʱʹ?õĴ߻?????Ҳ??????ա????????߻??????ۺ??????ϩ???״????˹??????ϳ??˽ṹ????Ȼ?𽺻???һ???ĺϳ???Ȼ?𽺡?????????ϩ????ϩ????????򵥵ĵ?????????ұ???Ҳ??ɹ??????⻹?????˸??־??????????ܵ??𽺡????ںϳ??𽺵??ܲ????Ѿ???󳬹?????Ȼ?𽺡?

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?????˹??ϳ??𽺵?˼·ԨԴ?????Ƕ???Ȼ?𽺵??????ͷ??ƣ??ϳ??𽺹?ҵ?ĵ????ͷ?չȡ????ԭ????Դ?????????켼???ij???̶ȣ??Լ????塢?߻????;ۺϷ?????ѡ?񡣴??⣬???????ǽ?ͨ???乤?ߣ????????ɻ?????̥?ȣ?????Ҫ???ϣ???????ķ?չ?ֺ?ս?????𽺵???????????ء?

??????һ???????ս?ڼ䵮???˺ϳ??𽺣?????????????????Ӧս?????衣20????30??????ڽ????˺ϳ??𽺹?ҵ???ڶ????????ս?ٽ??˶?Ʒ?֡??????ܺϳ??𽺹?ҵ?ķ?Ծ??չ??50??????????????????-?????߻????????????켼??Ҳ?Ƚϳ??죬ʹ?ϳ??𽺹?ҵ????ϳ??????????𽺵?ո?½׶Ρ?60????Ժ󣬺ϳ??𽺵IJ?????ʼ????????Ȼ?𽺡?

??????Ȼ?𽺵??????ͷ??? 1826?꣬M.?????????ȶ???Ȼ?𽺽??л?ѧ??????ȷ??????Ȼ?𽺵?ʵ??ʽΪC5H8.

????1860?꣬C.G.????˹????Ȼ?𽺵????ѽ?????з????C5H8,????Ϊ?????ϩ????ָ???????ϩ?ڿ??????ֻ???????ɰ?ɫ?????塣1879?꣬G.??????????ѽⷨ?Ƶ????????ϩ???ְ??????ϩ?????Ƴɵ????塣???????ֵ?????Ľṹ??????????Ȼ?𽺲??ܴ󣬵?????????????ȫȷ?ϴӵͷ??ӵ???ϳ????ǿ??ܵġ?

?????ϳ??𽺵ĵ???

????1900?ꧪ???????״?Ʒ???2,3-???׻?-1,3-????ϩ?ۺϳɸ?״?????塣??һ???????ս?ڼ䣬?¹??ĺ??????䱻???????ж?????Ȼ?𽺵????룬??????1917???״???2,3-???׻?-1,3-????ϩ?????˺ϳ??𽺣?ȡ??Ϊ?׻???W?ͼ׻???H.

?????ϳ??𽺵ķ??????׻???W??2,3-???׻?-1,3-????ϩ??70???Ⱦۺ????? 5???º??Ƶõģ????׻??? H????????????30~35??ۺ?????3~4???º??Ƴɵ?Ӳ?𽺡???ս???ڼ䣬?׻??𽺹??????? 2350t.?????𽺵????ܱ???Ȼ?𽺲?ö࣬???ҵ?ʱ????ĺϳɺ;ۺϼ?????????󣬹?ս??ֹͣ??????


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