duritaanka Reaction

Waa maxay qar

Qar waa habka nidaamka cusub ee soo saara size waaweyn iyo alaabta tiro wayn oo degdeg ah. nidaamka qar waa monomer ama pre-polymer (qalabka PU) ee gobolka dareere la tiro gaar ah oo lagu qiyaasay qodan dhanka Electricity-bamka ee la isku qasin oo madax ka ah caaryada ah. Ka dib markii ey in lagu duraa caaryada hoos deegaanka hooseeyo cadaadiska / qolka heerkulka, waxaa jawaab deg deg ah iyo cross-xiriirinaya Daaweynta. Toban daqiiqo ka dib, waxaa la bedesheen doonaa, ka dibna u sii daayo ka caaryada, qayb waa wax soo saarka qar. Marxaladani waxay la fududeeyey karaa sida: kaydinta, cabbirka, hybrid, buux caaryada iyo Daaweynta, demould iyo post-processing.

Geedi socodka ah ee Reaction wax taaj oo kale duritaanka

1) Kaydinta
Laba wax dareere ah ceeriin loo isticmaalaa in geedi socodka qar ayaa lagu kaydiyaa laba kaydka at heerkulka gaar ah, kaydka caadi yahay weel cadaadis. In wax taaj oo kale, sida caadiga ah ee 0.2 ~ 0.3 MPA cadaadis hoose stoste ee kaydka, iyo wareegayay si joogto ah ee kaydka, exchangers kulaylka iyo isku qasin madaxa. Sida polyurethane, heerkulka celceliska stoste waa 20 ~ 40 ℃, sax gacanta ku heerkulka uu yahay ± 1 ℃.
2)Measurement
Measurement will be finished by the metering pump , and requirements for measuring accuracy is at least be ± 1.5%, and the best control should at ± 1%.
3) Hybrid
In RIM process , product quality is largely depend on the quality of mixture in the mixing head , so does the production capacity . The normal pressure is about 10 Mpa in order to get the better effect .
4) Mold falling
The characteristic of RIM process is the material flow rate is very high .Then stoste’s viscosity can not be very high .Such as the viscosity of polyurethane mixture is about 0.1 Pa s.and flow rate control at 600 g/s in mold falling .
5) Curing.
Polyurethane two-component mixture have very high reactivity after injected in the mold ,so it complete curing in ten more minutes .But plastic’s conductivity is not good , so most heat can not release from a large chemical reaction condition , so that the outside temperature are higher than inside, so the curing development is from inside to outside .
6) Demold 
Demold also means we need release the cured part from the mold , and that part is the RIM product . And more quantity can be produced as the above process .
7) Post-Process 
It is according to customers’requirements . 

Waxyaabaha for qar

Cusbi General caadi ah, cusbi polyurethane, Ester vinylalkohol, amide cusbi Ester, cusbi roodhida, cusbi epoxy iyo wax kooban dhaqameed, iwm 
wax Caadi: HD-PU4210, DCP-qar, AXSON-qar 875, iwm.

PS: Markii ugu Daaweynta of nidaamka qar inta badan waa by go'aanka wax taaj oo dejinta iyo size wax soo saarka. Intaa waxaa dheer, waxyaabaha qar baahan socday Daaweynta labaad ka dib markii laga sii daayay caaryada. Iyo sida nidaamka qar waa si degdeg ah (15-30 daqiiqo / piece) iyo-sax sare, waxaa haboon in ay soo saaraan tiro waaweyn iyo waxyaabaha size weyn, iyo size of shubay qayb weyn waa 2000mmX1200mmX1000mm, waayo, 10kg.

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