Kayayyakin gabatarwa:

Heat Flow Differential Scan CalculatorYana da kayan aikin nazarin zafi wanda ke auna bambancin zafi da dangantakar zafi da sigogin zafi na ƙarshen tunani da samfurin ƙarshen, wanda aka fi amfani da shi don auna sigogin halaye daban-daban a lokacin dumama ko sanyaya kayan aiki: zafin jiki na canjin gilashi Tg, lokacin OIT na oxidation, zafin jiki mai narkewa, zafin jiki na lu'ulu'u, ƙimar zafi da zafin zafi da sauransu.

Babban fasali:
1.New jikin murhu tsari, tabbatar da tushe kwanciyar hankali na ƙuduri da ƙuduri
2. Digital gas mass kwarara mita, sarrafa bushewa gas kwarara, bayanai kai tsaye a cikin database
3. Kayan aiki za a iya amfani da biyu-direction iko (mai kula da baƙi, software iko), dubawa friendly, sauki aiki

fasaha sigogi:

1, samfurin: HS-DSC-101
2, DSC ma'auni: 0 ± 500mW
3, zafin jiki kewayon: dakin zafin jiki ~ 800 ℃ iska sanyaya
4, dumama kudi: 1 ~ 80 ℃ / min
5, zafin jiki ƙuduri: 0.1 ℃
6, zafin jiki canji: ± 0.1 ℃
7, zafin jiki maimaitawa: ± 0.1 ℃
8, DSC amo: 0.01mW
9, DSC ƙuduri: 0.01mW
10, DSC hankali: 0.01mW
11. Hanyar sarrafa zafin jiki: dumama, zafin jiki (cikakken tsarin sarrafawa ta atomatik)
12, curve dubawa: dumama dubawa
13, yanayi Control: kayan aiki ta atomatik canzawa
14, Nuna hanyar: 24bit launi, 7 inch LCD taɓa allon nuni
15, Data dubawa: Standard USB dubawa

16. sigogi misali: sanye da misali abu (tin), mai amfani zai iya gyara kansa zazzabi da thermal enthalpy

Gwajin abubuwa da za a iya yi a Differential Scan Thermometer:

Tsarin gwajin software na DSC

Typical DSC gwajin curve:

Menene gilashin canjin zafin jiki?

Canjin gilashi shine halayen kayan polymer na polymer na polymer (watau polymer na polymer na polymer), shi ne macro bayyanar canjin nau'in motsi na polymer, yana tasiri kai tsaye ga kayan amfani da kayan aiki da kayan aiki, saboda haka shi ne babban abu na binciken kimiyyar lissafi na polymer na dogon lokaci.

Yawancin kayan polymer yawanci suna iya zama a cikin yanayin jiki guda huɗu masu zuwa (ko yanayin lissafi): yanayin gilashi, yanayin lafiya, babban lafiya (yanayin roba), da yanayin lafiya. Canjin gilashi shine canjin tsakanin high elasticity da yanayin gilashi, daga tsarin kwayoyin halitta, zafin jiki na canjin gilashi shine yanayin shakatawa na high polymer amorphous daga yanayin daskarewa zuwa yanayin daskarewa.

A cikin DSC misali, lokacin da zafin jiki a hankali ya tashi, canza zafin jiki ta hanyar gilashin polymer, layin tushe a kan curve na DSC yana motsawa zuwa shugabancin sha zafi (duba hoto). A maki a cikin zane shine maki wanda ya fara karkatarwa daga layin tushe. Ka tsawaita gaban da bayan canji, tsaye nesa tsakanin layi biyu ne bambancin mataki ΔJ, a ΔJ / 2 za a iya samun C maki, daga C maki don yanke layi da gaban da bayan layi a B maki, B maki daidai da zafin jiki darajar shi ne gilashi canji zafin jiki Tg.

Alamar crystalline roba sune: polyethylene PE, polypropylene PP, polyformaldehyde POM, polyamide PA6, polyamide PA66, PET, PBT da sauransu

Non-crystalline roba akwai: polycarbonate, ABS、 Transparent, PVC, da dai sauransu (kamar roba kwalliya, TV kwalliya, da dai sauransu)

Menene oxidation induction lokaci?

Lokacin Oxidation Induction (OIT) shine lokacin da samfurin ya fara faruwa a cikin yanayin oxygen mai zafi (200 digiri Celsius), yana nuna alamar ƙididdigar iyawar lalacewar zafi a cikin kayan aiki, ajiya, walda da amfani. Hanyar Oxidation Induction Time (OIT) ita ce hanyar gwada hanyar binciken zafi (DTA) don hanzarta tsofaffiyar filastik a cikin zafin jiki mai zafi. Ka'idar ita ce: sanya samfurin filastik tare da abubuwan da ba su da mahimmanci (kamar aluminum oxide) a cikin na'urar nazarin zafi, don sauya gas mai mahimmanci (kamar nitrogen) a cikin ɗakin samfurin da oxygen a wani zafi. Gwajin canje-canje na DTA curve (bambancin thermal spectrum) da aka haifar da samfurin oxidation da kuma samun oxidation induction lokaci (lokaci) OIT (min) don kimanta thermo-tsofaffi aiki na filastik.