Farqiga u dhexeeyaTPU Polyethert NoocaiyoNooca polyester
TPU waxaa loo qaybin karaa laba nooc: nooca polythertherthert iyo nooca polyester. Marka loo eego shuruudaha kaladuwan ee codsiyada badeecada, noocyada kala duwan ee TPUs loo baahan yahay in la xusho. Tusaale ahaan, haddii shuruudaha caabbinta hydrolysiysiysiysiysiysiysiysiysiysiy ay aad u sarreyso, nooca polytherthertherthertherthert tpu ayaa aad ugu habboon nooca polyester nooca tpu.
Marka maanta, aan kahadalno kala duwanaanshaha u dhexeeyaNooca polytherthert tpuiyoNooca polyester nooca tpuIyo sidee loo kala saaraa? Waxyaabaha soo socdaa waxay faahfaahin ka bixinayaan afar dhinac: Farqiga ku yimaada alaabada ceyriinka, kala duwanaanshaha qaab dhismeedka, isbarbardhiga waxqabadka, iyo hababka aqoonsiga.
1, Kala duwanaanshaha alaabta ceeriin
Waxaan aaminsanahay in dad badani ay yaqaanaan fikradaha tabar-baradka heerkulbeegyada, kuwaas oo leh muuqaal qaab dhismeed ah oo ay ka kooban yihiin qaybo jilicsan oo adag, siday u kala horreeyaan, si ay u keenaan dabacsanaan iyo adkaanta sheyga.
TPU sidoo kale waxay leedahay qaybo isku mid ah oo silsilado ah oo jilicsan, iyo farqiga u dhexeeya nooca polythertherthertherther tpu iyo nooca polyester nooca TPU waxay ku jirtaa farqiga u dhexeeya qaybaha silsiladaha jilicsan. Waxaan arki karnaa farqiga u dhexeeya ashyaa'da ceyriinka ah.
Nooca polyletherthert tpu
Nooca polyester TPU: 4-4 '- Diphenylmethane ee Diisocyate (MDI), 1,4-Bunandediol (BDO), IDDO Acid (AA), aas oo ku saabsan qiyaastii 35%, iyo xisaabaadka BDO qiyaastii 25%.
Waxaan arki karnaa in sheyga ceyriinka ah ee nooca polytherthertherthertthert tpu tpumetttrahdydreruran (PTMEG); Waxyaabaha ceyriinka ah ee nooca polyester nooca silsiladaha silsiladda jilicsan ee TPU waa AASIP ACIOS (AA), halkaas oo ah, halkaas oo AAIPIC acid ay ka falceliso Buniediol si ay u sameeyaan polybutlutnes-ka si cadarka ah ee silsiladda.
2, Kala duwanaanshaha Dhismaha
Silsiladda molikalalba ee TPU waxay leedahay (AB) qaab dhismeedka toosan, oo ay tahay miisaanka molika-ka sarreeya (1000-6000) polyester ama polyther, beylka kiimikaad ee u dhexeeya qaybaha silsiladda ee u dhexeeya disudocyate waa disudocyate.
Marka loo eego qaabdhismeedka kala duwan ee A, TPU waxay u qaybsantahay nooca polyester, nooca polycaprolaprolactone, nooca polycaprolatbonate, iwm Noocyada caanka ah waa nooca polystetherthertherthert tpu iyo nooca polyester nooca tpu.
Laga soo bilaabo shaxda kor ku xusan, waxaan arki karnaa in silsiladaha guud ee molyecalar nooca polyethert trans iyo nooca polyester nooca tpu labadaba ay yihiin qaab dhismeedka toosan, oo ah kala duwanaanshaha silsiladda leh ee polystet-ka ah ama polyester polyol.
3, isbarbardhiga waxqabadka
Polythers Polyters waa polymers aalkolo ah ama oligomaters oo leh dammaanad 'Ether' iyo kooxo hydroxyl kooxo soo afjar ah oo ku saabsan qaab dhismeedka silsiladda motcular. Sababta oo ah tamar ay u dhintaan hoose ee xisbiyada ether ee qaab dhismeedka iyo fududeynta wareegga.
Sidaa darteed, polytherty Tpu waxay leedahay dabacsanaan heerkul heerkulka hooseeya, caabbinta hydrolyysis, caabbinta caloosha, iska caabbinta UV, iska caabbinta UV, iwm. Shaygu wuxuu leeyahay gacan wanaagsan, laakiin awooda xoogga iyo jabka ayaa aad u liita.
Kooxaha ester-ka ah ee tamar xoog leh oo ku saabsan tamarta adag ee ku yaal polyester polilols waxay sameyn karaan dammaanad hydrogen-ka oo leh qaybo adag oo silsilado ah, oo u adeegaya sidii qodobo iskutallaab ah oo iskutallaab ah. Si kastaba ha noqotee, polyester wuxuu u nugul yahay inuu jebiyo duullaanka dartiis ee moleekulada biyaha, oo aashito ay ka dhashaan hydrolysis-ka ayaa sii jiri kara hydrolysis ee polyester.
Sidaa darteed, Polyester TPU waxay leedahay guryo farsamo oo heer sare ah, xidho iska caabbinta, iska caabbinta ilmada, iska caabbinta kiimikada, iska caabbinta heerkulka, iyo ka baaraandegga fudud, laakiin iska caabbinta hydrolyysis.
4, Qaabka Aqoonsiga
Sida TPU ay ugufiican tahay in la isticmaalo, waxaa la dhihi karaa oo keliya in xulashada ay tahay inay ku salaysnaato shuruudaha jidhka ee sheyga. Si loo gaaro guryaha farsamada wanaagsan, isticmaal polyester tpu; Haddii aad tixgalineyso qarashka, cufnaanta, iyo jawiga adeegsiga, sida samaynta alaabada biyaha, polytherthert Tpu ayaa ku habboon.
Si kastaba ha noqotee, markii aad dooranayso, ama si lama filaan ah u qasan laba nooc oo TPU ah, ma laha farqi weyn oo muuqaal ah. Marka sidee ayaan u kala saarnaa?
Runtii waxaa jira habab badan, sida midabka kiimikada, chromatographimetry-ga, GCMS), ee Spectroscopy-ka, iwm. Si kastaba ha noqotee, hababkan waxay u baahan yihiin shuruudo farsamo oo waqti dheer.
Ma jiraa qaab fudud oo si dhakhso leh loo aqoonsan yahay? Jawaabtu waa haa, tusaale ahaan, habka isbarbardhiga cufnaanta.
Qaabkani wuxuu u baahan yahay oo keliya hal tijaabiye cufnaanta. Qaadashada mitirka cufnaanta oo aad u saxsan oo cabir ahaan tusaale ahaan, tillaabooyinka cabbiraadda waa:
Shayga dhig miiska cabbiraadda miiska cabirka, muuji miisaanka sheyga, oo riix furaha ENTER si aad u xasuusato.
Ku rid sheyga biyaha si aad u muujiso qiimaha cufnaanta.
Nidaamka cabirku wuxuu qaadanayaa 5 ilbidhiqsi, ka dibna waxaa lagu gartaa iyadoo lagu saleynayo mabda'a ah in cufnaanta nooca polyester-ka ah ay ka badan tahay tan nooca polyethertherthert. Xaddiga cufnaanta gaarka ah waa: Nooca polyethertherthert tpu -1.13-1.18 g / cm3; Polyester TPU -1.18-1.22 G / cm3. Qaabkani wuxuu si dhakhso leh u kala sooci karaa inta udhaxeysa nooca TPU prolyster nooca iyo nooca polytherthertherthertherthert.
Waqtiga Post: Jun-03-2024