Abu na musamman NBR/EPDM/FKM/SIL Rubber O-Ring

NBR

Nitrile Rubber an shirya shi ta hanyar copolymerization na acrylonitrile da butadiene. Abubuwan da ke cikin acrylonitrile sun bambanta daga 18% zuwa 50%. Mafi girman abun ciki na acrylonitrile, mafi kyawun juriya ga man fetur na hydrocarbon, amma ƙarancin zafin jiki ya fi muni, yawan zafin jiki na yau da kullun shine -40 ~ 120 ℃. Butanol yana daya daga cikin robar da aka fi amfani da shi don hatimin mai da O-ring.

Amfani:

· Kyakkyawan juriya ga mai, ruwa, sauran ƙarfi da man fetur mai ƙarfi.

· Kyakkyawan juriya na matsawa, juriya da haɓakawa.

Rashin hasara:

Ba dace da kaushi na polar kamar ketones, ozone, nitro hydrocarbons, MEK da chloroform ba. · Ana amfani da shi wajen kera tankin mai, tankin mai mai mai da sassa na roba, musamman sassan rufewa, ana amfani da su a cikin man fetur na hydraulic, man fetur, ruwa, siliki, man silicon, man dister lubricating oil, ethylene glycol hydraulic oil da sauran kafofin watsa labarai na ruwa. Ita ce hatimin roba mafi yawan amfani kuma mafi ƙarancin farashi.

FKM

Rubber Carbon Fluoro Kowanne iri daban-daban dangane da abun ciki na fluorine (tsarin monomer) na kwayoyin fluorine. Babban juriya na zafin jiki ya fi na silicone roba, yana da kyakkyawan juriya na sinadarai, juriya ga yawancin mai da sauran ƙarfi (sai dai ketone, ester), juriya na yanayi da juriya na ozone; Cold juriya ne matalauta, da general amfani da zazzabi kewayon -20 ~ 250 ℃. Dabarar musamman na iya jure ƙananan zafin jiki har zuwa -40 ℃. Amfani:

· Juriya mai zafi zuwa 250 ℃

· Juriya ga mafi yawan mai da kaushi, musamman duk acid, aliphatic, kamshi da dabba da kayan lambu mai.

Rashin hasara:

Ba a ba da shawarar ga ketones, esters na ƙananan nauyin kwayoyin halitta da gaurayawan da ke ɗauke da nitrate ba. · Motoci, motoci, injinan dizal da tsarin mai.

SIL

Silicone Rubber babban sarkar an yi shi da silicon (-si-O-Si) an haɗa su tare. Kyakkyawan juriya na zafi, juriya na sanyi, juriya na ozone, juriyar tsufa na yanayi. Kyakkyawan aikin rufin lantarki. Ƙarfin ƙarfi na roba na yau da kullun ba shi da kyau kuma ba shi da juriyar mai. Amfani:

· Ƙarfin ƙwanƙwasa har zuwa 1500PSI da juriya mai tsage har zuwa 88LBS bayan ƙirƙira

· Kyakkyawan elasticity da kuma murdiya mai kyau

· Kyakkyawan juriya ga kaushi mai tsaka tsaki

· Kyakkyawan juriya mai zafi

· Kyakkyawan juriya sanyi

· Kyakkyawan juriya ga yashwar ozone da oxide

Kyakkyawan aikin rufin lantarki

· Kyakkyawan rufin zafi da zubar da zafi

Rashin hasara:

Ba a ba da shawarar yin amfani da mafi yawan abubuwan kaushi, mai, daɗaɗɗen acid da diluted sodium hydroxide. · Rumbun hatimi ko kayan roba da ake amfani da su a cikin masana'antar kayan aikin gida, kamar tukwane na lantarki, ƙarfe, sassan roba a cikin tanda.

· Seals ko roba a cikin masana'antar lantarki, kamar maɓallan wayar hannu, abin sha a cikin DVD, hatimin haɗin haɗin kebul, da sauransu.

· Hatimi a kan kowane nau'in abubuwan da ke hulɗa da jikin ɗan adam, kamar kwalabe na ruwa, maɓuɓɓugar ruwan sha, da sauransu.

Epdm

Ethylene Rubber (PPO) an haɗa shi daga Ethylene da propylene zuwa babban sarkar kuma yana da kyakkyawan juriya na zafi, juriya na tsufa, juriya na ozone da kwanciyar hankali, amma ba za a iya ƙara sulfur ba. Don magance wannan matsala, an shigar da ƙananan kashi na uku tare da sarkar biyu a cikin babban sarkar EP, wanda za'a iya samuwa ta hanyar ƙara sulfur zuwa EPDM. Matsakaicin zafin jiki na gabaɗaya shine -50 ~ 150 ℃. Kyakkyawan juriya ga kaushi na polar irin su barasa, ketone, glycol da phosphate lipid ruwa mai ruwa.

Amfani:

· Kyakkyawan juriya da juriya na ozone

· Kyakkyawan juriya na ruwa da juriya na sinadarai

· Ana iya amfani da barasa da ketones

· High zafin tururi juriya, mai kyau impermeability ga gas

Rashin hasara:

Ba a ba da shawarar yin amfani da abinci ko fallasa ga hydrogen aromatic. · Hatimi don yanayin tururin ruwa mai zafin jiki.

· Hatimi ko sassa don kayan wanka.

· Abubuwan roba a cikin tsarin birki (braking).

Hatimi a cikin radiators (tankunan ruwa na mota).