Kupanga zinthu za rabara

Pakukonzekera zinthu zopangira, zosakaniza ziyenera kuyezedwa molondola motsatira njira yopangira. Kuti mphira wosaphika ndi chinthu chopangira zinthu zisakanikirane mofanana, zinthu zina ziyenera kukonzedwa:

Rabala yosaphika iyenera kufewetsedwa m'chipinda choumitsira cha 60-70 ℃ isanadulidwe ndikusweka m'zidutswa zazing'ono;

Zowonjezera monga parafini, stearic acid, rosin, ndi zina zotero ziyenera kuphwanyidwa;

Ngati ufawo uli ndi zinthu zosafunika kapena tinthu tating'onoting'ono, uyenera kufufuzidwa ndi kuchotsedwa;

Zowonjezera zamadzimadzi (pine tar, coumarone) zimafuna kutentha, kusungunuka, kusungunuka kwa madzi, ndi kusefa zinyalala;

Chosakanizacho chiyenera kuumitsidwa, apo ayi chimakhala chovuta kusonkhana ndipo sichingafalitsidwe mofanana panthawi yosakaniza, zomwe zimapangitsa kuti thovu lizituluka panthawi yovunda ndipo zimakhudza ubwino wa chinthucho;

3. Kuyeretsa

Rabala yosaphika ndi yotanuka ndipo ilibe mphamvu zofunikira (pulasitiki) zogwirira ntchito, zomwe zimapangitsa kuti zikhale zovuta kuikonza. Kuti iwonjezere kukhuthala kwake, ndikofunikira kuyeretsa rabala yosaphika; Mwanjira imeneyi, chosakaniza chimafalikira mosavuta mu rabala yosaphika panthawi yosakaniza; Nthawi yomweyo, panthawi yozungulira ndi kupanga, imathandizanso kukonza kutseguka kwa zinthu za rabala (zolowera mu nsalu ya ulusi) komanso kusinthasintha kwa kupanga. Njira yowononga mamolekyu a unyolo wautali wa rabala yosaphika kuti apange pulasitiki imatchedwa plasticization. Pali njira ziwiri zoyeretsera rabala yosaphika: kuyeretsa kwa makina ndi kuyeretsa kutentha. Kuyeretsa kwa makina ndi njira yochepetsera kuwonongeka kwa mamolekyu a rabala osaphika ndikuwasintha kuchoka ku mkhalidwe wotanuka kwambiri kupita ku mkhalidwe wa pulasitiki kudzera mu extrusion ya makina ndi kukangana kwa makina opangira pulasitiki pa kutentha kochepa. Kuyeretsa kwa thermoplastic ndi njira yolowetsa mpweya wotentha wopanikizika kukhala rabala yosaphika, yomwe, ikagwiritsidwa ntchito ndi kutentha ndi mpweya, imawononga ndikufupikitsa mamolekyu a unyolo wautali, motero imapanga pulasitiki.

4. Kusakaniza

Kuti muzolowere kugwiritsa ntchito zinthu zosiyanasiyana, kukwaniritsa magwiridwe antchito osiyanasiyana, ndikukweza magwiridwe antchito a zinthu za rabara ndikuchepetsa ndalama, ndikofunikira kuwonjezera zowonjezera zosiyanasiyana ku rabara yosaphika. Kusakaniza ndi njira yosakaniza rabara yosaphika yopangidwa ndi pulasitiki ndi chinthu chophatikiza ndikuyiyika mu chosakaniza cha rabara. Kudzera mu kusakaniza kwamakina, chinthu chophatikiza chimafalikira kwathunthu komanso mofanana mu rabara yosaphika. Kusakaniza ndi njira yofunika kwambiri popanga zinthu za rabara. Ngati kusakaniza sikuli kofanana, ntchito ya rabara ndi zowonjezera sizingagwiritsidwe ntchito mokwanira, zomwe zimakhudza magwiridwe antchito a chinthucho. Zipangizo za rabara zomwe zimapezeka pambuyo posakaniza, zomwe zimadziwika kuti rabara yosakanizidwa, ndi chinthu chomalizidwa pang'ono chomwe chimagwiritsidwa ntchito popanga zinthu zosiyanasiyana za rabara, zomwe zimadziwika kuti zinthu za rabara. Nthawi zambiri zimagulitsidwa ngati katundu, ndipo ogula amatha kukonza ndikusakaniza mwachindunji zinthu za rabara kuti apange zinthu zofunika za rabara. Malinga ndi njira zosiyanasiyana, rabara yosakanizidwa ili ndi mitundu yosiyanasiyana ndi mitundu yosiyanasiyana yokhala ndi mawonekedwe osiyanasiyana, zomwe zimapatsa zosankha.