Phula losinthidwa phula (BitumenRubber, lotchedwa AR) ndi mtundu watsopano wa zinthu zapamwamba zophatikizika. Ndi mtundu watsopano wamagulu apamwamba opangidwa ndi ufa wa rabara wopangidwa kuchokera ku matayala a zinyalala, omwe amawonjezeredwa ngati chosinthira ku phula lapansi. Zimapangidwa kudzera muzinthu zambiri monga kutentha kwakukulu, zowonjezera ndi kumeta ubweya kusakaniza mu zipangizo zapadera. Zakuthupi. Itha kukulitsa moyo wautumiki wapamsewu, kuchepetsa phokoso, kuchepetsa kugwedezeka, kuwongolera kukhazikika kwamafuta ndi kuphulika kwamafuta, ndikuwongolera kukana kwa icing. Pansi ophatikizana zochita katundu wolemera phula, zinyalala tayala mphira ufa ndi admixtures, ufa mphira zimatenga utomoni, ma hydrocarbons ndi zinthu zina organic mu phula, ndipo amadutsa angapo kusintha thupi ndi mankhwala moisten ndi kukulitsa ufa mphira. Kukhuthala kumawonjezeka, kufewetsa kumawonjezeka, ndipo kukhuthala, kulimba, ndi kuthanuka kwa mphira ndi phula zimaganiziridwa, motero kumapangitsa kuti phula labala liziyenda bwino.
"Labala losinthidwa phula" limatanthawuza ufa wa labala wopangidwa kuchokera ku matayala otayika, omwe amawonjezeredwa ngati chosinthira ku phula lapansi. Zimapangidwa kudzera muzinthu zambiri monga kutentha kwakukulu, zowonjezera ndi kumeta ubweya kusakaniza mu zipangizo zapadera. zomatira zakuthupi.
Mfundo yosinthira phula la ufa wosinthidwa phula ndi phula losinthidwa la phula lopangidwa ndi kutupa kwathunthu pakati pa tinthu tating'ono ta mphira wa tayala ndi phula la matrix pansi pa kutentha kwakukulu. Phula losinthidwa phula la phula lathandiza kwambiri ntchito ya phula, ndipo limaposa phula losinthidwa lopangidwa ndi zosintha zomwe zimagwiritsidwa ntchito masiku ano monga SBS, SBR, EVA, ndi zina zotero. kulosera kuti phula losinthidwa phula likuyembekezeredwa kuti lilowe m'malo mwa phula la SBS.
mwayi

Ufa wa mphira ukhoza kuwonjezeredwa ku phula pomanga misewu ndi misewu. Kugwiritsira ntchito kumeneku sikunapangidwe ngati kotulutsiramo matayala otayirapo zinyalala, koma m’malo mwake kupititsa patsogolo makhalidwe a phula kuti akhale ofanana ndi phula lapamwamba lomwe lili ndi ma elastomer atsopano. Ubwino wowonjezera ufa wa rabara ku phula umaphatikizapo kuchepetsa chizolowezi cha msewu (makamaka m'madera ozizira), kupititsa patsogolo kukhazikika kwa msewu, kukana madzi ndi kukhazikika kwa miyala. Phula losinthidwa labala ndi lolimba kwambiri, lomwe limatha zaka zisanu ndi ziwiri kuposa kusakaniza phula lachikhalidwe.
Labala yomwe imagwiritsidwa ntchito posintha phula ndi polima yotanuka kwambiri. Kuonjezera ufa wa mphira wonyezimira pansi pa phula kungathe kukwaniritsa kapena kupitirira zotsatira zomwezo monga styrene-butadiene-styrene block copolymer modified bitumen. Makhalidwe a phula losinthidwa phula ndi monga:
1. Kulowa kumachepa, kuchepetsedwa kumawonjezeka, ndipo kukhuthala kumawonjezeka, kusonyeza kuti kutentha kwapamwamba kwa phula kumakhala bwino, ndipo kumatha kusintha zochitika zowonongeka ndi kukankhira pamsewu panthawi ya chilimwe.
2. Kutentha kwa kutentha kumachepetsedwa. Kutentha kukakhala kocheperako, phulalo limakhala lolimba, zomwe zimapangitsa kuti pakhale kupsinjika kwapakati; kutentha kukakhala kokwera, msewu umakhala wofewa ndipo umapunduka chifukwa cha magalimoto onyamula. Pambuyo pa kusinthidwa ndi ufa wa rabara, kutentha kwa phula kumawonjezeka ndipo kukana kwake kumayendetsedwa bwino. The viscosity coefficient of the rabara ufa wosinthidwa phula ndi wamkulu kuposa wa phula pansi, kusonyeza kuti phula losinthidwa ali ndi kukana kwambiri kuti mapindikidwe otaya.
3. Kuchita kwa kutentha kwapansi kumakhala bwino. Ufa wa mphira ukhoza kupititsa patsogolo kutentha kwa phula ndikuwonjezera kusinthasintha kwa phula.
4. Kumamatira kumawonjezera. Pamene makulidwe a filimu ya phula yomwe imamatira pamwamba pa mwalawo ikuwonjezeka, phula la phula limakanizidwa ndi kuwonongeka kwa madzi, ndipo moyo wamsewu ukhoza kukulitsidwa.
5. Chepetsani kuwononga phokoso.
6. Wonjezerani mphamvu pakati pa matayala a galimoto ndi msewu wamtunda ndikuwongolera chitetezo cha galimoto.
chopereŵera
Komabe, kugwiritsa ntchito ufa wa rabara motere kumawonjezera mtengo wa phula, ndipo kuwonjezera ufa wa labala ku phula kumapangitsa kuti kusakaniza kwa phula kumakhala kovuta kwambiri (kosavuta kumamatira) ndikuwonjezera nthawi yogwira ntchito. Nthawi zina phula lomwe lili ndi ufa wambiri wa mphira ndi losavuta kugwira moto panthawi yosungunuka, choncho ndi bwino kuti zomwe zili mu ufa wa rabara mu phula losinthidwa phula ziyenera kukhala zosakwana 10%.