Kusiyana pakati pa tpu polyter mtundu ndi mtundu wa polyester

Kusiyana pakatiTPU polytherm mtundundiMtundu wa polyester

TPU ikhoza kugawidwa m'magulu awiri: Mtundu wa Polytherter ndi mtundu wa polyester. Malinga ndi zofunikira zosiyanasiyana zamapulogalamu a mankhwala, mitundu yosiyanasiyana ya tpus imafunikira kusankhidwa. Mwachitsanzo, ngati zofunikira pakuletsa hydrolysis ndizambiri, mtundu wa polytherter tpu ndiwoyenera kuposa mtundu wa polyeter tpu.

Chifukwa chake lero, tiyeni tikambirane za kusiyana pakatiPolytherter mtundu tpundipolyester mtundu tpu, ndi momwe mungayeretse? Otsatirawa afotokoza bwino mbali zinayi: kusamvana m'magawo opangira, kusiyana, kufananiza magwiridwe, komanso njira zodziwikira.

1, Kusiyana kwazinthu zopangira

Ndikhulupirira kuti anthu ambiri amadziwa malingaliro a ma emoplast elastomers, omwe ali ndi zigawo zokhala ndi zigawo zofewa komanso zolimba, motsatana, kuti mubweretse kusinthasintha komanso kuvuta.

TPU ilinso ndi zigawo zonse zowoneka bwino komanso zolimba pakati pa polytherter mtundu tpu ndi mtundu wa polturter tpu ndi kusiyana kwapakati pa magawo ofewa. Titha kuwona kusiyana kuchokera ku zopangira.

Polytherm mtundu tpu: '

Mtundu wa polyester TPU: 4-4 '- Lipchenylhane Diisoctaniate (MDI), 1,4-RIPENIIOOL (AA), ndi maawerengedwe azaka pafupifupi 35%.

Titha kuwona kuti zida zam'madzi za polythetter tpu yofewa yofewa ya Polytetrahydron (ptmeg); Zopangira za polyester mtundu wofewa tpu zofewa zazitali ndi adiptic acid (AA), komwe adipic acid imakhudzana ndi boaditiiol kuti mupange gawo lokhazikika ngati gawo lofewa.

2, Kusiyana

Kukhazikika kwa ma TPU ali ndi (AB) n-mtundu wozungulira, komwe amalemera kwambiri (1000-6000) polyester, ndi kapangidwe ka mankhwala pakati pa masitepe a AB.

Malinga ndi zojambula zosiyanasiyana za a, tpu amatha kugawidwanso mtundu wa polyether, mtundu wa polycaprolactone mtundu wa polybater ndi mtundu wa TPU.

Kuchokera pamwambapa, titha kuwona kuti ma unyolo onse a mtundu wa polythether mtundu tpu ndi kusiyana kwakukulu ndikukhala ngati gawo la polythel la Polyyester.

3, kuyerekezera

Polythetter Polymers overder kapena oligomers okhala ndi ma elther a elther ndi magulu a hydroxyl pamagulu omaliza pamagulu a matope. Chifukwa cha kuchuluka kwake kwamitengo ya eya mu kapangidwe kake kapangidwe kake kakhazikika.

Chifukwa chake, Polythetter TPU ali ndi kusinthasintha kwabwino kwa kutentha, hydrolysis kukana, kukana nkhungu, etc. Mphamvuyo imakhala ndi dzanja labwino.

Magulu a EST okhala ndi mphamvu zochulukirapo polyester pollols amatha kupanga zomangira za hydrogen ndi zigawo zolimba, zomwe zimagwira ntchito ngati zotanuka. Komabe, polyester imakonda kuwonongeka chifukwa cha mamolekyulu amadzi, ndipo acid omwe amapangidwa ndi Hydrolysis angayambitsenso mphamvu ya hydrolyze a polyester.

Chifukwa chake, polyester TPU imakhala ndi mphamvu zambiri, kuvala kukana, kusokoneza misozi, kutentha kwa kutentha kwambiri, komanso kusakaniza kwa hydrolysis, koma kukana hydrolysis kukana.

4, njira yodziwira

Zomwe TPU ndibwino kugwiritsa ntchito, zitha kungonena kuti kusankhidwa kuyenera kutengera zofuna za malonda. Kukwaniritsa zachilengedwe zamakina, gwiritsani ntchito polyester tpu; Ngati mukuwona mtengo, kachulukidwe, komanso malo ogwiritsa ntchito mankhwala, monga kupanga zinthu zosangalatsa madzi, polyther TPU ndi yoyenera kwambiri.

Komabe, posankha, kapena kusakaniza mwangozi mitundu iwiri ya tvus, alibe kusiyana kwakukulu. Ndiye tiyenera kuwasiyanitsa bwanji?

Pali njira zambiri, monga mapangidwe a mankhwala, ma chromatography - misa spectometry (gcms), motero, njirazi zimafunikira zofunikira kwambiri ndikutenga nthawi yayitali.

Kodi pali njira yosavuta komanso yodziwikiratu? Yankho ndi inde, mwachitsanzo, njira yofananizira yofanizira.

Njira iyi imangofunika katswiri wina wonyoza. Kutenga mawu ochulukirapo a rababionry monga chitsanzo, muyeso wake ndi:

Ikani zomwe zimapangika mu tebulo loyezera, onetsani kulemera kwa malondawo, ndikukanikizani batani la Enter kuti mumbukire.
Ikani zogulitsa m'madzi kuti muwonetse phindu la kachulukidwe.
Njira yonse yoyezera imatenga pafupifupi masekondi 5, kenako imasiyanitsidwa malinga ndi mtundu wa mtundu wa polyeter mtundu wa mtundu wa polythetherter TPU. Mtundu wapadera ndi: Mtundu wa Polytherter TPU -1.13-1.18 g / masentimita; Polyester TPU -1.18-1.22 g / cm3. Njira iyi imatha kusiyanitsa msanga pakati pa TPU polyeter ndi mtundu wa polyther.