Chidziwitso cha Mphira II: Mphira Wachilengedwe (NR)

Rabala lachilengedwe ndi polima wachilengedwe wochokera ku latex ya mtengo wa Hevea brasiliensis. Umapangidwa kukhala cholimba chotanuka kudzera mu njira monga kuuma ndi kuuma. Gawo lake lalikulu ndi cis-1,4-polyisoprene (yomwe imakhala pakati pa 91% ndi 94%), ndipo zina zonse ndi zinthu zopanda rabala monga mapuloteni ndi mafuta acids.

Makhalidwe Aakulu:

1. Katundu Wachilengedwe:

(1) Kulimba kwambiri komanso kukana kuvala: Mphamvu yokoka ndi yayikulu (16.7 - 34.3 MPa), kuchuluka kwa kutalika kumatha kufika 650% - 900%, ndipo kulimba kwa kuchira ndikwabwino kwambiri (70% - 95%).

(2) Kusinthasintha kwa kutentha: Kuchuluka kwa kutentha kogwira ntchito kwa nthawi yayitali: -55℃ mpaka +70℃Kulekerera kwakanthawi kochepa: mpaka 100℃Malo ofooka kutentha kochepa: pafupifupi -50℃.

(3) Kuteteza magetsi: Kuteteza bwino kwambiri, koyenera mawaya ndi zingwe

2. Zofooka za Mankhwala:

(1) Kukana mafuta bwino: Kutupa mosavuta mu mafuta amchere ndi petulo (kutupa: 80% - 300%)

(2) Kusalimba mtima ku ukalamba: Kumakhudzidwa mosavuta ndi ozone, kuwala kwa ultraviolet ndi kutentha kwambiri, ndipo kumafuna kuwonjezera mankhwala oletsa ukalamba.

(3) Kukana pang'ono kwa ma acid ndi alkali: Ma acid ofooka amatha kulekerera, koma ma acid amphamvu (monga hydrochloric acid ndi nitric acid) amawononga kwambiri.

3. Ntchito zazikulu:

(1) Matayala (oposa 70%), mapayipi a rabara, malamba otumizira, zotengera zododometsa, ndi zida zina zoyendetsera katundu

(2) Nsapato za rabara, magolovesi azachipatala (ofunika kusintha kuti awonjezere kukana kwa nyengo)

4. Mtundu wa chinthu: O-ring, chinthu chopangidwa mwamakonda kwa makasitomala, Raba Gaskets / Flat Washer Seals / Rubber Spacer / Mphete ya Mphira ya Makina Ochapira ndi zina zotero.