Fluoroplastic: bayani dalla-dalla, Gost

Polyacetal - wani roba polymer kayan amfani a sinadaran, lantarki da kuma masana'antun sarrafa kayayyakin abinci da farko kamar yadda coatings. Its abũbuwan amfãni hada da farko da yin amfani da mai fadi da zafin jiki da fuska kuma a low coefficient na gogayya.

Definition da Iri

Fluorines yana nufin dama iri sunadarin flourine-dauke da robobi. Mafi sau da yawa a cikin masana'antu da kuma iyali yana amfani da polytetrafluoroethylene. Dangane da manufacturer, wannan abu iya kira daban. A sana'a Stores Rasha sayar ciki har da shigo da polytetrafluoroethylene. Material sanya a cikin USA, da ake kira "Teflo" a Ingila - "Flyuon" a Jamus "Gostaflon". Mu a Rasha shi ne aka sani da Teflon-4.

Sauran iri wannan abu ne ba yadada, amma kuma quite rare. Su ne:

• Polytrifluorochloroethylene (ptfe-3).
• Polyvinylidene fluoride (ptfe-2);
• Sauran copolymers na fluorinated ethylene.

Hanyar yi

Samun duk wadannan jinsuna ta hanyar sinadaran wajen. A gaskiya ma, su ne polymers to wanda sunadarin flourine kwayoyin halitta suna kara da cewa. Saboda haka su suna.

Fluoroplastic-4 da aka hada a matsayin fararen foda sa'an nan guga man da kuma sintered a high zazzabi. Sauran brands wannan abu ne yawanci a shirye ta quenching.

A yi na da yawa m zamani kayayyakin amfani ne Teflon. Bayani dalla-dalla gaske kawai ban mamaki. A abũbuwan amfãni daga wannan abu sun hada da:

• High sunadarai juriya. Ptfe-4 ba ta soke ko a tafasar Ruwa regia.
• Inertness da low porosity.
• The sosai low gogayya coefficient. Wannan adadi ne a ptfe ya rage kusan guda a duk yanayin zafi.
• Excellent dielectric Properties. Wannan insulator abu ya rage ko a 200 ° C.
• Stability. Chemical Properties na fluoroplastic-4 bai sauya ba a zazzabi har zuwa -300 c.
• Flame juriya - wani amfani da wani abu kamar Teflon. Halaye (a zafi-resistant polymer halin da ikon kai-extinguishing) da damar da shi, kuma da amfani a yankunan da high wuta hadarin.
• Gas tightness.
• Biocompatibility. Wannan irin roba ne sau da yawa amfani da su yi hakoran roba.

disadvantages ptfe

Kamar yadda ka gani, da kayan ne sosai high quality, kuma kusan duniya - Teflon. Yana yana da halaye kawai ban mamaki. Amma, ba shakka, yana da wasu drawbacks. Don wadanda sun hada da:

• High sanyi kwarara. Wannan dukiya da ɗan takaita amfani da ptfe a Electronics.
• A ikon ware cutarwa abubuwa a lokacin da ya kona sama da 300 c.
• Manyan a kwatanta da sauran polymers, da kuma nauyi ne ba ma mai kyau lalacewa juriya.

inda amfani

Sunadarin flourine roba da ake amfani a yankunan da yawa daga cikin tattalin arziki. Very sau da yawa shi ne amfani da:

• A cikin mota masana'antu. Tun da gogayya coefficient na abu ne kadan, domin samar high quality-bearings, gogayya raka'a, support kafafu da kuma a kan haka. D.
• A lantarki da lantarki masana'antu. Insulator Teflon kuma yake da kyau kwarai. Saboda haka shi ne sau da yawa sosai amfani a yi na igiyoyi, allon kayan wutan, lantarki da sauransu. D.
• A magani. Bugu da kari ga prostheses kuma implants sanya na Teflon ganga domin adanar magani da kuma jini. Sanya daga gare shi, kuma marufi ga magunguna.
• A cikin masana'antun sarrafa kayayyakin abinci. Kyau sosai, wannan abu ya dace, misali, ga yi na shafts mirgina kullu amfani a Bakeries, farashinsa ga dispensing madara da sauransu. D. Teflon a ciki surface daga cikin kwanon rufi - shi ne ma daya daga cikin iri na ptfe.
• Lokacin tattaro cikin ruwa bututu da kuma lambatu tsarin (FUM-tef).

Saboda haka, abu ne mai matukar high bukatar, da kuma a wasu lokuta kawai irreplaceable - Teflon. Halaye (ta applicability ne ainihin sosai m), bayar ga baƙi, mu yi la'akari da kasa.

gogayya coefficient

Wannan adadi ne a ptfe ne kadan. A sanadin motsi da kuma a tsaye coefficient na gogayya a karfe da shi ne kawai 0,04. Duk da haka, kamar yadda aka ambata riga, ptfe - abu ne ba ma m. Saboda haka, ko da bayan 100 wuce da surface Properties bambanta. A wannan canzawa coefficient na gogayya qara har zuwa 0,13, da kuma sanadin motsi - har zuwa 0,08.

Shigarsu komowar canje-canje fluoropolymer surface kuma a very high zamiya gudun. A wannan yanayin, da gogayya coefficient an karu da 2-3 sau. A darajar wannan index iya bambanta ƙwarai da zazzabi hawa da sauka.

Polytetrafluoroethylene rage coefficient na gogayya may, a lokacin da kaya yana ƙaruwa. Saboda haka, misali, a wani matsin lamba na:

• 20-30 kg / m ^2, da darajar da wannan index - 0.1.
• 150-300 kg / m ² - 0.02.

The abu ne m isasshen - Teflon. Its halaye ne irin wannan cewa, a lokacin da amfani ga masana'antu, misali, bearings, shi wajibi ne don ƙara powdered fillers. Wannan zai iya zama coke, gilashin zaruruwa, molybdenum disulfate, da sauransu. D.

Tantancewar Properties

A bakin ciki fina-finan da Teflon yardar kaina watsa haske, watau m. Ya dubi game da wannan a matsayin polyethylene. A m fina-finai na wannan abu ne hasken.

Nuna alama fluoroplastic nuna gaskiya ga UV haskoki bisa ga iri-iri na 2000-4000 A, ga infrared - zango jere daga 2 zuwa 7,5 μ.

Exposure zuwa high yanayin zafi

Lokacin da ya kona kan 327 digiri fluoroplastic ta lu'ulu'u hallaka, inda ya wuce a cikin amorphous form. Kullum m sassa sanya wannan abu ne opaque. Bayan da miƙa mulki ga amorphous form ptfe fara yardar kaina aika da haske. A wannan yanayin, da kayan ba da danko sosai da sosai na roba. Lokacin da ya kona zuwa 415 digiri C da kuma sama da bazuwar tsari zai fara. Wannan shi ne danko sosai Teflon ba ya faru a wani zazzabi.

Wannan rinjayar da masana'antu tsari fasahar da sassa. Polyacetal (Standard bayani dalla-dalla ma'anar da matsakaicin daidaito) ba za a iya amfani da aiki da na al'ada hanyoyin domin robobi. Alal misali, wani samfurin kerarre gare ta allura gyaren ko extrusion ba zai yiwu ba. Sarrafa sassan da aka gyara sanya daga wannan abu da sintering fasahar yin amfani da "Allunan" compacted a low yanayin zafi.

sinadaran Properties

Fluoroplastic-4 ne a chemically barga abu. Wannan abu bai soke ko a sosai m abubuwa - diluted da karfi acid. Ba su da wani sakamako a kan shi da kuma da mayar da hankali alkaline mafita.

Abinda ba jure lamba - ne mafita Alkali karfe a ammonia da elemental sunadarin flourine da chlorine trifluoride. Yana bayyana sakamakon wadannan sunadarai a dagagge yanayin zafi.

fadada rabo

A wannan siga Teflon F4 halaye ma mai girma ne. Duk da haka, ta coefficient na fadada dabam tare da zazzabi. Kamar yadda aka nuna a tebur.

recrystallization

Kamar yadda aka ambata riga, daya daga cikin raunin mallaki by ptfe (wanda bayani dalla-dalla su ne kullum mai kyau), a isasshe babban mataki na sanyi kwarara. A aikace, wannan results a canza nau'i na kayayyakin sanya daga gare at wani dagagge matsa lamba. Idan aka yi amfani da a ba ma high yanayin zafi - daga 80 zuwa 100 digiri C, a da kaya kada ta kasance fiye da 10 kg / m ^2. A wata mafi girma matsa lamba a kan samfurin zai zama a bayyane nakasawa. Tare da kara yawan zafin jiki ya kamata a rage da load.

Idan wani karfi matsa lamba (100-200 kg / m ²⁾ samfurin sanya na polytetrafluorethylene, za a iya murƙushe cikin wani farantin da ciwon ragewa kauri 3-5 sau dangane da yawan zafin jiki. Lokacin da nakasawa daga cikin kayan kullum ba ya faru da shi fatattaka da kuma babu sauran raunin.

A tebur a kasa daya na iya ganin abin da yake a cikin wannan girmamawa fluoroplastic bayani dalla-dalla (matsawa karkashin wasu lodi).

Fotoroplast za a iya amfani ga masana'antu sassa amfani, da kuma a ce mafi girma daga 30 kg / m ² matsa lamba. Duk da haka, a cikin wannan yanayin da yi Pairing na nodes a cikin samfurin ya zama kamar mai yawa. An ba a yarda da kasancewar a cikin shi na cavities ko gagarumin gibba. A wannan yanayin, da fluoroplastic za kawai da babu inda ya tsere. Teflon abu - ba ma na roba. Saboda haka, domin a cimma wata snug Fit, shi ne kara a samar da roba. Wani lokaci maha? Ar nodes kuma yi amfani da musamman spring compensators.

Fluoroplastic: fasaha bayani dalla-dalla

A samar da ptfe-4 compulsorily complied tare da bukatun na Gost 10007-80. Wadannan tebur nuna mafi muhimmanci physico-sinadaran Properties na wannan abu.

Ga irin wannan ban mamaki Teflon-4 bayani dalla-dalla. A Properties na wannan abu ba da damar yin amfani da sarrafa daga cikin mafi ingancin sassa.

Brand ptfe-4

Kamar yadda aka ambata riga, polytetrafluoroethylene - mafi mashahuri nau'i na irin wannan polymers. A halin yanzu samar da dama brands na ptfe-4:

• F-4PN. Amfani ga yi na high AMINCI.
• 4D-F. Amfani a samar da janar nufi kayayyakin.
• F-4D. Na ptfe sa wannan alama na bakin ciki-walled tube, rufi na igiyoyi, hoses da FUM tef.
• F-4D. Very manufacturable kayan amfani ga yi daidai size.

Teflon takardar

Products daga irin wannan ne sosai a bukatar a zamani masana'antu. Domin samar da insulating, anti-gogayya da sealing kayayyakin ne da kyau polymer kamar Teflon, halaye. Leaf version na masana'antu da fasaha ta kasu:

• material lamba "C" (sliced).
• alama "P" (guga man).

Sale na irin fluoroplastic Rolls ba tare da nada. ta kauri ne kuma m da jihar misali da, dangane da nisa iya zama 2-4 mm.

Teflon, wanda jiki halaye masu girma - zamani kayan amfani ga yi na fadi da dama daga sassa da kuma gyara. A kwatanta da na al'ada robobi shi yana da yawa abũbuwan amfãni. Duka ptfe da articles daga gare ta, a cikin ra'ayi na high quality bukatun, dole ne a sanya a cikin m daidai da Gost.