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Kunyumba > Nkhani > Pulasitiki yazipatala: Kusiyana kwa pa6 pa 46 pepala
Nkhani

Pulasitiki yazipatala: Kusiyana kwa pa6 pa 46 pepala

1. Mbiri:

Pa nkhani, polyamidiide kapena yotchedwa nylon, zimapangidwa ndi kukhala ndi mwayi mu mawonekedwe a masiketi, ndodo ndi chubu ndi imodzi mwazithunzi zojambulajambula. Ili ndi mitundu iwiri ya zinthu, pa6 ndi pa66, yomwe ndi zinthu zodziwika bwino za NYOMEN. Magawo awiriwa ndi ofanana ndi zinthu zambiri zofanana. Ndiye pali kusiyana kotani pakati pa awiriwa?

Pa66 anali atatchera polymer mu Polymer Huth Hume Caroal mu 1935. Ntchito yopanga Pa 66 mpaka Mesut Isungunuka ku United States kumapeto kwa 1939.

Pa6 ndi polymer contrasized ndi Germany ig Schraker pogwiritsa ntchito sperolacti imodzi ya speacleting εεocaprocroric acid monga woyambitsa. Kupanga koyesedwa kwa fiber ya pa 1939, ndi malonda kuchitika ndi kampani yaku Germany mu 1943.

2. Kapangidwe:

Kuti tisanthule kusiyana pakati pawo, tiyenera kuyamba ndi kapangidwe kawo. Monga tonse tikudziwa, Pa6 amapangidwa ndi polymerization waku mphete wa Caprolacan, ndipo nylon pa66 amapezeka ndi kufupika kwa hexamethyleniamine ndi adipic acid. Pa6 ndi Pa66 khalani ndi mawonekedwe ofanana, koma mawonekedwe a mawonekedwe ndi osiyana, monga momwe chithunzi chotsatirachi:

PA66 Sheet

Ndi chifukwa cha kusiyana kumeneku kuti kusiyana kwake kwa kusiyana kwake, monga gulu la ma hydroleculal hydrogen ndilosiyana.

PA6 Sheet

3. Ntchito

Malo osungunuka a pa66 ndi 260 ~ 265 ° C, ndi kutentha kwagalasi (boma louma) ndi 50 ° C. Kuchulukitsa ndi 1.13 ~ 1.16 g / cm3.

Pa6 Translucent kapena OPaque Milkyrine Crystalline ma polymeles ma polymeles, matenthedwe 220 ° Mafuta Opitilira 310 Ali ndi mphamvu zapamwamba kwambiri, kukana mpweya wabwino ndi magetsi osokoneza bongo, kutentha kochepa kwambiri, kutentha kosatha ndi kukana kwa mankhwala, makamaka kusokoneza mafuta.

Poyerekeza ndi Pa66, pa Pa6 ndikosavuta kukonza ndi mawonekedwe, ali ndi mawonekedwe abwino pamalopo, ndipo ali ndi kutentha kwakukulu, koma ali ndi njira zazitali zamadzi ndipo zimakhazikika pang'ono. Imakhala ndi thambo lotsika, malo ochepa osungunuka, ogwiritsa ntchito nthawi yayitali m'malo ovuta, komanso kupsinjika kokwanira pamtunda wambiri. Kutentha kosalekeza ndi 105 ° C.

Pafupifupi, kusiyana kwa magwiridwe antchito pakati pa 206 ndi pa6 ndi motere:

Makina katundu: Pa66> Pa6

Kutentha kwamagetsi: Pa66> Pa6

Mtengo: Pa66> Pa6

Malo osungunuka: pa66> pa6

Madzi a Madzi: Pa66 <Pa6

Kukana Polimba: Pa66 <Pa6

Nthawi Yokhazikika: Pa66 <Pa6

Kugwiritsa Ntchito Kuumba: Pa66 <Pa6


4.Kusinthasintha

Kuyanika Chithandizo

Pa6 amatenga chinyezi mosavuta, chidwi chapadera chiyenera kulipidwa kuti lisapume musanakonzedwe. Ngati zinthuzo zikuperekedwa muzinthu zosagwedezeka, chidebe chikuyenera kutsekedwa. Ngati chinyezi ndi chachikulu kuposa 0,2%, tikulimbikitsidwa kuti muwume mu mpweya wouma pamwamba pa 80 ° C kwa maola 3-4. Ngati zinthuzo zakhala zikuwonekera kwa maola opitilira 8, tikulimbikitsidwa kuti muwume pa 105 ° C kwa maola opitilira 1 mpaka 2. Ndi bwino kugwiritsa ntchito chowuma chopondera.

Pa66 Ngati zinthuzo zikusindikizidwa musanakonzedwe, ndiye kuti palibe chifukwa chouma. Ngati chidebe chosungiracho chimatsegulidwa, tikulimbikitsidwa kuti muwume mu mpweya wotentha, wowuma pa 85 ° C. Ngati chinyezi ndi chachikulu kuposa 0,2%, ndikofunikiranso kuwuma pa 105 ° C kwa maola 1 mpaka 2. Ndi bwino kugwiritsa ntchito chowuma chopondera. Kutentha Kwakuumba: 260 ~ 310 ° C, 280 ~ 320 ° C kwa mitundu yokwezeka.

Kutentha kwamphamvu

Pa6: 80 ~ 90 ° C. Kutentha kosembitsidwa kwambiri kumakhudza kwambiri crystalloty, yomwe imakhudza makina a gawo.

Kwa ziwalo zowonda kwambiri, zazitali, zimalimbikitsanso kugwiritsa ntchito kutentha kwambiri kwamphamvu. Kuchulukitsa kutentha kwa nkhungu kumawonjezera mphamvu ndi kuuma kwa gawo, koma kumachepetsa mphamvu. Ngati khoma makulidwe ndi akulu kuposa 3mm, tikulimbikitsidwa kugwiritsa ntchito kutentha pang'ono kwa 20 ~ 40 ° C. Kulimbikitsidwa kwagalasi Kutentha kwa nkhungu kuyenera kukhala wamkulu kuposa 80 ° C.

Pa66: 8 ° C amalimbikitsidwa. Kutentha kwa nkhungu kumakhudza crystalluity, komwe kumakhudza katundu wazomwezo.

Kwa ziwalo zapansi zocheperako, ngati kutentha kwa nkhungu kumatsika kuposa 40 ° C amagwiritsidwa ntchito, makilogalamu a pulasitiki adzasintha ndi nthawi, komanso kuti asunge nthawi ya pulasitiki, ndipo mankhwala othandizira amafunikira.

Kutentha

Pa6: 230 ~ 280 ° C, 250 ~ 280 ° C kuti mitundu yokwezeka.

Pa66: 260 ~ 290 ° C. Chogulitsa cha zowonjezera zagalasi ndi 275 ~ 280 ° C. Kutentha kwake kusungunuka kuyenera kupewedwa pamwamba pa 300 ° C.

Kutembenukira kwa jakisoni

Onsewa nthawi zambiri amakhala pakati pa 750 ndi 1250 bar (kutengera kapangidwe kake ndi kapangidwe kazinthu).

Kuthamanga kwa jekeseni

Onsewa ndi liwiro lalikulu (pang'ono pang'ono kuti alimbikitsidwe).

Wothamanga ndi chipata

Kuyambira nthawi ya pa6 ndi pa66 ndi yochepa kwambiri, malo a chipata ndichofunikira kwambiri. Chipata cha chipata sichiyenera kukhala chochepera 0,5 * t (pomwe T ndi kukula kwa pulasitiki). Ngati wothamanga wowotchera amagwiritsidwa ntchito, kukula pachipata kuyenera kukhala kocheperako kuposa momwe alili othamanga chifukwa wothamanga wotentha kwambiri angathandize kupewa zolimba za zinthuzo. Ngati chipata cham'mimba chikugwiritsidwa ntchito, m'mimba mwake chipata chiyenera kukhala 0,75 mm.


5. ntchito

Mapulasitiki a usiketi ali ndi mphamvu yayikulu, kukana kwamphamvu, kusokoneza bwino, kuvala bwino, kukana kwa mankhwala komanso zolimba. Amatha kusinthidwa ndi fiber galasi, kusintha kwa mchere ndi moto woyaka. Zimapangitsa kuti zikhale zokwanira, makamaka zomwe zimagwiritsidwa ntchito m'makampani agalimoto ndi zida zamagetsi.

PA66 Sheet

Pa66 ili ndi ntchito yokwanira, mphamvu yayikulu, kuumitsa kwabwino, kutsutsana kwamphamvu, mafuta ndi kukana kwa mankhwala, makamaka kuvuta, kukhazikika kwa kutentha ndi kuwononga kutentha. Pa66 imagwiritsidwa ntchito popanga ulusi wa mafakitale monga zingwe chifukwa cha mphamvu zake zapamwamba kuposa pa6.


PA66 Sheet

Pa6 ndi Pa66 Kupitilira mumitundu yambiri, koma komwe Pa6 itha kugwiritsidwa ntchito, pa66 sikugwiritsidwa ntchito.


Pulasitiki ya AHD

Zithunzi zapamwamba za pa 20:

Mapepala: 1 - 100 x 1000 x 2000mm (chizolowezi chimatha kuperekedwa)

Mitundu: yoyera, yakuda, yabuluu, mitundu ina imatha kulamulidwa.

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PA6 Sheet

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