- AS
1. AS magwiridwe
AS ndi propylene-styrene copolymer, yotchedwanso SAN, yokhala ndi kachulukidwe pafupifupi 1.07g/cm3. Si sachedwa kupsinjika maganizo akulimbana. Ili ndi kuwonekera kwapamwamba, kutentha kofewa kwambiri komanso mphamvu yamphamvu kuposa PS, komanso kukana kutopa kwambiri.
2. Kugwiritsa ntchito AS
Mathireyi, makapu, zida zapa tebulo, zipinda zamafiriji, ziboda, zida zowunikira, zodzikongoletsera, magalasi a zida, mabokosi oyikamo, zolembera, zoyatsira gasi, zogwirizira mswawawachi, ndi zina zambiri.
3. AS zinthu processing
The processing kutentha kwa AS zambiri 210 ~ 250 ℃. Izi ndizosavuta kuyamwa chinyezi ndipo zimafunika kuumitsa kwa ola limodzi musanakonze. Fluidity yake ndi yoyipa pang'ono kuposa PS, kotero kuthamanga kwa jekeseni kumakweranso pang'ono, ndipo kutentha kwa nkhungu kumayendetsedwa pa 45 ~ 75 ℃ bwino.
- ABS
1. Kuchita kwa ABS
ABS ndi acrylonitrile-butadiene-styrene terpolymer. Ndi polima amorphous ndi kachulukidwe pafupifupi 1.05g/cm3. Ili ndi mphamvu zamakina apamwamba komanso zinthu zabwino zonse za "okhazikika, olimba ndi chitsulo". ABS ndi pulasitiki yaumisiri yomwe imagwiritsidwa ntchito kwambiri ndi mitundu yosiyanasiyana komanso ntchito zambiri. Imatchedwanso "general engineering plastic" (MBS imatchedwa transparent ABS). Ndiosavuta kuumba ndi kukonza, imakhala ndi kukana kwa mankhwala, ndipo zinthu zake ndizosavuta kupangidwa ndi electroplated.
2. Kugwiritsa ntchito ABS
Zopopera, zonyamula, zogwirira, mapaipi, zotengera zamagetsi, zida zamagetsi, zoseweretsa, mawotchi owonera, zida za zida, ma tanki amadzi, kusungirako kuzizira ndi zotsekera zamkati zafiriji.
3. Makhalidwe a ndondomeko ya ABS
(1) ABS ili ndi hygroscopicity yayikulu komanso kukana kutentha. Iyenera kuumitsa kwathunthu ndikutenthedwa musanawumbe ndi kukonza kuti muchepetse chinyezi pansi pa 0.03%.
(2) The kusungunuka mamasukidwe akayendedwe a ABS utomoni samva kutentha (kusiyana ndi utomoni ena amorphous). Ngakhale kutentha kwa jakisoni wa ABS ndikokwera pang'ono kuposa kwa PS, kulibe kutentha kocheperako ngati PS, ndipo kutentha kwakhungu sikungagwiritsidwe ntchito. Kuti muchepetse kukhuthala kwake, mutha kuwonjezera liwiro la wononga kapena kukulitsa kuthamanga kwa jakisoni / liwiro kuti musinthe madzi ake. Ambiri processing kutentha ndi 190 ~ 235 ℃.
(3) The viscosity yosungunuka ya ABS ndi yapakatikati, yapamwamba kuposa ya PS, HIPS, ndi AS, ndipo madzi ake ndi osauka, kotero kuthamanga kwa jekeseni kumafunika.
(4) ABS imakhala ndi mphamvu yothamanga yapakatikati mpaka yapakatikati (pokhapokha ngati mawonekedwe ovuta ndi ziwalo zoonda zimafuna kuthamanga kwambiri kwa jekeseni), mphuno ya mankhwalawa imakhala yosavuta kutulutsa mpweya.
(5) Kutentha kwa ABS ndikokwera kwambiri, ndipo kutentha kwa nkhungu nthawi zambiri kumasinthidwa pakati pa 45 ndi 80 ° C. Popanga zinthu zazikulu, kutentha kwa nkhungu yokhazikika (chikombole chakutsogolo) nthawi zambiri chimakhala cha 5 ° C kuposa cha nkhungu yosunthika (kumbuyo yakumbuyo).
(6) ABS sayenera kukhala mu mbiya yotentha kwambiri (iyenera kukhala yosachepera mphindi 30), apo ayi idzawola mosavuta ndikutembenukira chikasu.
- Mtengo PMMA
1. Kuchita kwa PMMA
PMMA ndi polima amorphous, omwe amadziwika kuti plexiglass (sub-acrylic), yokhala ndi kachulukidwe pafupifupi 1.18g/cm3. Ili ndi kuwonekera bwino kwambiri komanso kuwala kwa 92%. Ndi zinthu zabwino kuwala; imakhala ndi kutentha kwabwino (kukana kutentha). Kutentha kwa deformation ndi 98 ° C). mankhwala ake ali sing'anga mphamvu makina ndi otsika pamwamba kuuma. Imakanda mosavuta ndi zinthu zolimba ndipo imasiya zizindikiro. Poyerekeza ndi PS, sikophweka kukhala wosasunthika.
2. Kugwiritsa ntchito PMMA
Magalasi a zida, zinthu zowoneka bwino, zida zamagetsi, zida zamankhwala, zitsanzo zowonekera, zokongoletsera, magalasi adzuwa, mano a mano, zikwangwani, mawotchi, zowunikira zam'mbuyo zamagalimoto, zowonera kutsogolo, ndi zina zambiri.
3. Makhalidwe a ndondomeko ya PMMA
Zofunikira pakukonza PMMA ndizokhazikika. Zimakhudzidwa kwambiri ndi chinyezi ndi kutentha. Izo ziyenera zouma mokwanira pamaso processing. Kukhuthala kwake kusungunuka ndikwambiri, kotero kumafunika kuumbidwa pa kutentha kwakukulu (219 ~ 240 ℃) ndi kupanikizika. Kutentha kwa nkhungu ndi pakati pa 65 ~ 80 ℃ ndi bwino. Kukhazikika kwa kutentha kwa PMMA sikwabwino kwambiri. Idzawonongeka chifukwa cha kutentha kwakukulu kapena kukhala pa kutentha kwakukulu kwa nthawi yayitali. Kuthamanga kwa wononga sikuyenera kukhala kokwera kwambiri (pafupifupi 60rpm), chifukwa ndikosavuta kuchitika m'magawo okhuthala a PMMA. Chochitika cha "chopanda kanthu" chimafuna zipata zazikulu ndi "kutentha kwa zinthu zambiri, kutentha kwa nkhungu, kuthamanga kwapang'onopang'ono" jekeseni.
4. Kodi acrylic (PMMA) ndi chiyani?
Acrylic (PMMA) ndi pulasitiki yowoneka bwino, yolimba yomwe nthawi zambiri imagwiritsidwa ntchito m'malo mwa magalasi muzinthu monga mazenera osasunthika, zikwangwani zowunikira, ma skylights ndi ma canopies a ndege. PMMA ndi ya banja lofunika la acrylic resins. Dzina lamankhwala la acrylic ndi polymethyl methacrylate (PMMA), lomwe ndi utomoni wopangidwa ndi polymerized kuchokera ku methyl methacrylate.
Polymethylmethacrylate (PMMA) imadziwikanso kuti acrylic, acrylic glass, ndipo imapezeka pansi pa mayina amalonda ndi malonda monga Crylux, Plexiglas, Acrylite, Perclax, Astariglas, Lucite, ndi Perspex, pakati pa ena. Polymethylmethacrylate (PMMA) nthawi zambiri amagwiritsidwa ntchito ngati pepala ngati njira yopepuka kapena yosasunthika m'malo mwa galasi. PMMA imagwiritsidwanso ntchito ngati utomoni woponyera, inki, ndi zokutira. PMMA ndi gawo la gulu la engineering pulasitiki.
5. Kodi acrylic amapangidwa bwanji?
Polymethyl methacrylate imapangidwa kudzera mu polymerization chifukwa ndi imodzi mwa ma polima opangira. Choyamba, methyl methacrylate imayikidwa mu nkhungu ndipo chothandizira chimawonjezeredwa kuti izi zifulumire. Chifukwa cha njira iyi ya polymerization, PMMA imatha kupangidwa m'njira zosiyanasiyana monga mapepala, ma resin, midadada, ndi mikanda. Guluu wa Acrylic angathandizenso kufewetsa zidutswa za PMMA ndikuziphatikiza pamodzi.
PMMA ndiyosavuta kuwongolera m'njira zosiyanasiyana. Itha kulumikizidwa ndi zida zina kuti zithandizire kukulitsa mawonekedwe ake. Ndi thermoforming, imakhala yosinthika ikatenthedwa ndikukhazikika ikakhazikika. Ikhoza kukula moyenera pogwiritsa ntchito macheka kapena laser kudula. Ngati opukutidwa, mukhoza kuchotsa zokopa pamwamba ndi kuthandiza kusunga umphumphu wake.
6. Kodi mitundu yosiyanasiyana ya acrylic ndi yotani?
Mitundu iwiri ikuluikulu ya pulasitiki ya acrylic ndi acrylic ndi extruded acrylic. Cast acrylic ndi okwera mtengo kupanga koma ali ndi mphamvu zabwinoko, kulimba, kumveka bwino, mtundu wa thermoforming komanso kukhazikika kuposa acrylic wotuluka. Cast acrylic imapereka kukana kwamphamvu kwamankhwala komanso kulimba, ndipo ndikosavuta kukongoletsa ndi mawonekedwe panthawi yopanga. Cast acrylic amapezekanso mu makulidwe osiyanasiyana. Extruded acrylic ndi yotsika mtengo kuposa acrylic cast ndipo imapereka acrylic wokhazikika, wogwira ntchito kuposa acrylic acrylic (popanda mphamvu yocheperako). Extruded acrylic ndiyosavuta kukonza komanso makina, ndikupangitsa kuti ikhale njira yabwino kwambiri yosinthira ma sheet agalasi pamagwiritsidwe ntchito.
7. Chifukwa chiyani acrylic amagwiritsidwa ntchito kwambiri?
Acrylic imagwiritsidwa ntchito nthawi zambiri chifukwa imakhala ndi mikhalidwe yopindulitsa ngati galasi, koma popanda zovuta za brittleness. Magalasi a Acrylic ali ndi mawonekedwe owoneka bwino kwambiri ndipo ali ndi index yofananira yofananira ngati galasi lolimba. Chifukwa cha mphamvu zake zosasunthika, okonza amatha kugwiritsa ntchito acrylics m'malo omwe magalasi angakhale oopsa kwambiri kapena angalephereke (monga periscopes zapansi pamadzi, mawindo a ndege, ndi zina zotero). Mwachitsanzo, magalasi odziwika bwino a galasi loletsa zipolopolo ndi chidutswa cha 1/4-inch-thick of acrylic, chotchedwa solid acrylic. Acrylic imagwiranso ntchito bwino pakuumba jekeseni ndipo imatha kupangidwa pafupifupi mawonekedwe aliwonse omwe wopanga nkhungu amatha kupanga. Mphamvu ya magalasi a acrylic kuphatikizidwa ndi kuphweka kwake kwa kukonza ndi kupanga makina kumapangitsa kukhala chinthu chabwino kwambiri, chomwe chimafotokoza chifukwa chake chimagwiritsidwa ntchito kwambiri m'mafakitale ogula ndi malonda.
Nthawi yotumiza: Dec-13-2023