Danyen kayan robobi shi ne resin roba, wanda ake hakowa da kuma hada shi daga man fetur, iskar gas ko fashewar kwal.Man fetur, iskar gas, da dai sauransu suna lalacewa zuwa ƙananan ƙwayoyin kwayoyin halitta (irin su ethylene, propylene, styrene, ethylene, vinyl barasa, da dai sauransu), kuma ƙananan kwayoyin halitta suna polymerized zuwa manyan kwayoyin kwayoyin halitta a karkashin wasu yanayi. , sa'an nan kuma robobi, man shafawa, fillers, da dai sauransu, za a iya sanya su cikin nau'i na roba albarkatun kasa.Gabaɗaya, ana sarrafa resins zuwa cikin granules don sauƙin amfani.Yawancin lokaci ana ƙera su zuwa na'urori masu wasu siffofi a ƙarƙashin yanayin dumama da matsa lamba.
Kaddarorin jiki na robobi.Akwai nau'ikan kaddarorin jiki da yawa na robobi, waɗannan kaɗan ne kawai waɗanda ke buƙatar fahimta don koyon fasahar toning:
1. Dangantaka mai yawa: Ƙirar dangi shine rabon nauyin samfurin zuwa nauyin nauyin ruwa guda ɗaya a wani yanayin zafi, kuma hanya ce mai mahimmanci don gano albarkatun kasa.
2. Ruwan shayar da ruwa: Ana yin kayan albarkatun filastik a cikin samfurin ƙayyadaddun girman da aka ƙayyade, an nutsar da shi a cikin ruwa mai tsabta tare da zafin jiki na (25 ± 2) ℃, da kuma rabon adadin ruwan da samfurin ya ɗauka zuwa ga albarkatun kasa. bayan 24 hours.Girman shayar da ruwa yana ƙayyade ko kayan albarkatun filastik yana buƙatar gasa da tsawon lokacin yin burodi.
3. Zazzabi na gyare-gyare: Zazzabi na gyare-gyare yana nufin zafin narkewar albarkatun guduro
4. Bazuwar zafin jiki: Yanayin bazuwar yana nufin yanayin zafin da sarƙar macromolecular na filastik ke karyewa lokacin da aka yi zafi, kuma yana ɗaya daga cikin abubuwan da ke nuna juriyar zafin filastik.Lokacin da zafin jiki na narkewa ya wuce zafin bazuwar, yawancin albarkatun ƙasa za su juya rawaya, har ma da wuta da baƙi, kuma ƙarfin samfurin zai ragu sosai.
Lokacin aikawa: Juni-13-2022