Acrylic jakisoni akamaumba ndondomeko

Dzina la mankhwala a acrylic ndi polymethylmethacrylate (PMMA mu Chingerezi). Chifukwa cha zolakwika za PMMA monga kuuma kwapansi, kupukuta kosavuta, kukana kutsika, ndi kusayenda bwino kwa kayendetsedwe ka kayendetsedwe kake, kusintha kwa PMMA kwawonekera motsatira. Monga copolymerization ya methyl methacrylate ndi styrene ndi butadiene, kusakanikirana kwa PMMA ndi PC, ndi zina zotero.

Khalidwe loyenda laPMMAndizoipa kuposa za PS ndi ABS, ndipo kusungunuka kwamphamvu kumakhudzidwa kwambiri ndi kusintha kwa kutentha. Pa akamaumba ndondomeko, ndi Sungunulani mamasukidwe akayendedwe makamaka anasintha kutengera kutentha jekeseni. PMMA ndi polima amorphous ndi kutentha kusungunuka kuposa 160°C ndi kutentha kwa kutentha kwa 270°C.

1. Kutaya mapulasitiki

PMMA ili ndi mlingo wina wa kuyamwa kwa madzi, ndi madzi otsekemera a 0.3-0.4%. Kupanga jekeseni kumafuna chinyezi chochepera 0.1%, nthawi zambiri 0.04%. Kukhalapo kwa chinyezi kumayambitsa thovu, mikwingwirima ya mpweya, komanso kuchepa kwa kuwonekera pakusungunuka. Choncho iyenera kuumitsidwa. Kutentha kwa kutentha ndi 80-90℃ndi kuyanika nthawi yoposa 3 hours. Zida zobwezerezedwanso zitha kugwiritsidwa ntchito 100% nthawi zina. Ndalama zenizeni zimadalira zofunikira za khalidwe, nthawi zambiri kuposa 30%. Zida zobwezerezedwanso ziyenera kupewedwa kuti zisaipitsidwe, apo ayi zingakhudze kuwonekera ndi katundu wa chinthu chomalizidwa.

2. Kusankha makina opangira jekeseni

PMMA ilibe zofunikira zapadera zamakina opangira jekeseni. Chifukwa cha kusungunuka kwake kwakukulu, pamafunika poyambira mozama komanso dzenje lalikulu la nozzle. Ngati mphamvu ya chinthucho ndi yapamwamba, wononga ndi chiŵerengero chokulirapo chiyenera kugwiritsidwa ntchito popanga pulasitiki yotsika kutentha. Kuphatikiza apo, PMMA iyenera kusungidwa mu hopper youma.

3. Mapangidwe a nkhungu ndi zipata

Kutentha kwa nkhungu kumatha kukhala 60℃-80℃. Kutalika kwa njira yayikulu kuyenera kufanana ndi taper yamkati. Ngodya yabwino kwambiri ndi 5° ku 7°. Ngati mukufuna jekeseni nkhungu 4mm kapena pamwamba mankhwala, ngodya ayenera kukhala 7° ndipo m'mimba mwake mwa njira yayikulu iyenera kukhala 8 mpaka 8°. 10mm, kutalika kwa chipata sikuyenera kupitirira 50mm. Pazinthu zokhala ndi khoma lochepera 4mm, m'mimba mwake kuyenera kukhala 6-8mm

Kwa mankhwala okhala ndi makulidwe a khoma kuposa 4mm, m'mimba mwake wa wothamanga ayenera kukhala 8-12mm. Kuzama kwa zipata zozungulira, zowoneka ngati fan komanso zoyima ziyenera kukhala 0.7 mpaka 0.9t (t ndiye makulidwe a khoma la chinthucho). Kutalika kwa chipata cha singano kuyenera kukhala 0.8 mpaka 2mm; ang'onoang'ono kukula ayenera kusankhidwa otsika mamasukidwe akayendedwe.

Mabowo wamba ali mkati mwa 0.05 kuya, 6 mm m'lifupi, ndipo ngodya yolowera ili pakati pa 30.'-1° ndipo gawo lapakati lili pakati pa 35'-1°30°.

4. Sungunulani kutentha

Itha kuyezedwa ndi njira yojambulira mumlengalenga: kuyambira 210℃ku 270℃, malingana ndi chidziwitso choperekedwa ndi wogulitsa.

Tulukani kumpando wakumbuyo, pangani jekeseni wa makina opangira jekeseni kuti achoke panjira yayikulu, kenako pangani jekeseni wa pulasitiki, womwe ndi jekeseni wa mpweya.

5. Kutentha kwa jekeseni

Jakisoni wofulumira angagwiritsidwe ntchito, koma kuti mupewe kupsinjika kwakukulu kwamkati, ndi bwino kugwiritsa ntchito jekeseni wamitundu yambiri, monga pang'onopang'ono-wochedwa, ndi zina zotero.

6. Nthawi yokhalamo

Ngati kutentha ndi 260°C, nthawi yokhalamo sungapitirire mphindi 10. Ngati kutentha ndi 270°C, nthawi yokhalamo sungapitirire mphindi 8.

ZAOGE Film Crusherndi oyenera kuphwanya zinthu zofewa ndi zolimba m'mphepete mwa zidutswa ndi makulidwe a 0.02 ~ 5MM, monga PP/PE/PVC/PS/GPPS/PMMA mafilimu, mapepala, ndi mbale ntchito zolembera, ma CD, ndi mafakitale ena.

Itha kugwiritsidwa ntchito kusonkhanitsa, kuphwanya ndi kuwonetsa zida zam'mphepete zomwe zimapangidwa ndi ma extruder, laminators, makina amapepala, ndi makina a mbale. Mwachitsanzo, zinthu zophwanyidwazo zimanyamulidwa ndi chifaniziro chodutsa papaipi kupita ku cholekanitsa champhepo yamkuntho, kenako ndikukankhira pa doko la extruder screw feed port kuti asakanizike ndi zida zatsopano, motero amapeza chitetezo pompopompo ndikugwiritsa ntchito.