Plastik ne rɔba yɛ polymer ade koro no ara. ɛyɛ carbon ne hydrogen atɔm titiriw. afoforo afoforo nso wɔ oxygen, nitrogen, chlorine, silicon, fluorine, sulfur ne atom afoforo a ɛwɔ hɔ no kakraa bi{2}} wɔn su yɛ soronko na wɔn a wɔde di dwuma no yɛ soronko{3}} no yɛ nea ɛyɛ den sen biara wɔ dan mu hyew mu, ɛnyɛ nea ɛyɛ den sen no, ɛyɛ den sen{ yɛ elastic, wobetumi atrɛw mu na ayɛ tenten, na wobetumi asan de ntrɛwmu no asan aba ne mfitiase tebea. eyi fi wɔn molecule nhyehyɛe ahorow. nsonsonoe foforo ne sɛ wobetumi asan de plastic ayɛ adwuma na wɔasan de adi dwuma mpɛn pii, bere a rɔba ntumi nsan nyɛ adwuma tẽẽ{7}} no betumi ayɛ nea wɔde di dwuma kɛse wɔ rɔba mu, enti nea ɛbɛn no yɛ nea ɛbɛn ho no, so{8
1)The thermal conductive rubber is a poor conductor of heat, and its thermal conductivity is about 2.2~6.28 watts/m2·0K when the thickness is 25 mm. It is an excellent heat insulating material. If the rubber is made into a microporous or sponge state, The heat insulation effect will be further improved, and the thermal conductivity will be reduced kosi 0.4 ~ 2.0 watts. Rɔba afã biara a wɔde di dwuma no betumi ama ɔhyew aba esiane hysteresis a ɛyera nti, enti ɛsɛ sɛ wɔhwɛ yiye na ama ɔhyew no asɛe.
2)thermal ntrɛwmu esiane free volume kɛse a ɛda rɔba molecular chains ntam nti, emu rotation a ɛwɔ afã horow no mu no bɛyɛ mmerɛw bere a ɔhyew no kɔ soro, a ɛma volume no yɛ kɛse. linear ntrɛwmu coefficient a ɛwɔ rɔba no yɛ bɛyɛ 20 mpɛn sen steel{3}} Ɛsɛ sɛ wosusuw eyi ho wɔ rɔba products no ho nhyehyɛe no ho nhyehyɛe no ho nhyehyɛe no mu, efisɛ linear no yɛ kɛse{ Model. a ɛwɔ rɔba koro no ara ho no, rɔba aduru no mu den ne nea ɛyɛ mmerɛw a ɛwɔ rɔba aduru no mu no wɔ rɔba aduru no shrinkage rate kɛse. shrinkage no nkɛntɛnso no ne nea ɛyɛ den no hyia wɔ ɔkwan a ɛne gelatin a ɛwɔ mu no hyia so wɔ ɔkwan a ɛne no nhyia so. theoretical order of shrinkage of virer rɔba Rubber > Natural Rubber, a ɛno nti na wɔpaw rɔba sɛ pipe fittings industry. ade titiriw nti a nneɛma a wɔde yɛ adwuma no. wɔ nnɛyi rɔba adwumayɛ mu ntɛmntɛm no, wiase rɔba adwumayɛ no wɔ tɔn bɛboro U.S. dɔla ɔpepepem 250, rɔba nneɛma fi bere tenten ayɛ aguade a ɛho hia wɔ amanaman ntam aguadi mu. Wɔ wiase gua so no, rɔba nneɛma ayɛ tae sɛ mfinimfini, a ɛtwe adwene si mfiridwuma ne adansi nneɛma so, a nea ɛka ho ne nneɛma a wɔyɛ no da biara da te sɛ rɔba mpaboa ne teyp, ne nneɛma akuw te sɛ aduruyɛ ne akwahosan, amammerɛ ne agumadi.