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1、StudyonPropertiesofNaturalRubber(Partly)1TreeofRubberNaturalrubbercollectedfromplantfluids,althoughtheworldhas2000DuoZhongplantscanproducenaturalrubber,butalarge-scalepromotionplantingisthemainrubberBrazilThenaturalrubberinthemaincomponentisthetypegatherisoprene,hastheflexibility,andsetouthi
2、ghstrength,theanti-peelresistanceandwearresistance,easytobegoodwithothermaterialandothercharacteristics,widelyusedinadhesivetape,rubbertires,productsoftheproduction.Brazilorrubberhightemperature,highhumidity,wind,fertilesoil,mainlygrowinsoutheastAsia,andotherlow-latituderegion.Naturalconditi
3、onsinChina,byrestrictingonlyhainan,guangdong,yunnan,climateconditionscangrow,usableareaisabout15millionmu,atpresenthasplanted14millionacresaround,theannualoutputis600000tons.2ThecharacteristicsanddistributionofnaturalrubberRubberisoriginatedintheBrazilianamazonriverbasininthewesternregion,is
4、nowhorse-drawnyueclothandAsia,Africa,Oceania,LatinAmericaDuoGe40countriesandregions.Plantingareaislargernationshave:Indonesia,Thailand,Malaysia,China,India,Vietnam,Nigeria,Brazil,SriLanka,Liberia,etc.ZhiJiaoareaismainlydistributedinhainan,guangdong,guangxi,yunnan,fujian,Taiwanalsocanbeplante
5、dinhainan,amongthemasthemainZhiJiaoarea.Naturalrubbertreeplanting,tropicalrainforestsofregionalbasicdistributionwithin15°Cintheequator,mainlyinsoutheastAsia,ataboutoftheworldnaturalrubberplantingareaof90%.ThemainproducershaveThailand,Indonesia,Malaysia,China,India,VietnamandBurma,SriLanka,es
6、peciallythetotaloutputisgivenpriorityto,beforemorethan60%ofworldoutput,andwillproducethatmostofthenaturalrubberforexport,amongthem,ThailandandIndonesiahaveexportsthanashighas90%above.Thailand,IndonesiaandMalaysiaperiodintheAprilgeneraltappingrubbertreestothefollowingFebruary.1VarietiesNatura
7、lrubber,alsocalledChinarubberorcaoutchouc,isanelastomer(anelastichydrocarbonpolymer)thatwasoriginallyderivedfromlatex,amilkycolloidproducedbysomeplants.Theplantswouldbe6tappedthatis,anincisionmadeintothebarkofthetreeandthesticky,milkcoloredlatexsa
