reaktsiya Injection

RIM nima

RIM tez katta hajmi va katta miqdor mahsulot ishlab chiqarish uchun yangi jarayon yo'lidir. RIM jarayoni, monomer yoki qolipga boshini aralashtirish bilan o'lchov nasosi bilan aralashtirish orqali o'lchanadi, ma'lum bir mutanosib bilan suyuq holatda oldindan polimer (PU materiallari) hisoblanadi. aralashmasi past bosim / xona harorati atrof-muhit ostida qolipga AOK so'ng, tez javob va kursini xoch bog`lash bo'ladi. o'n daqiqadan so'ng, u qotib bo'ladi, keyin qolipga uni ozod, deb bir qismi RIM mahsuloti hisoblanadi. saqlash, o'lchash, devqomat, mog'or to'ldirish va aniqlashtirish, demould va post-qayta ishlash: Bu jarayon sifatida soddalashtirilgan mumkin.

Reaksiyani qarshi to'qimalarining jarayoni

1) saqlash
RIM jarayonida ishlatiladigan ikki xom suyuq moddiy ma'lum haroratda ikki ombori saqlangan edi, suv havzasi, ko'pincha, bosimli idish emas. Quyish yilda ombori odatda 0,2 ~ 0,3 MPa past bosim stoste va ombori, issiqlik değiştiriciler, doimiy aylanma va boshini aralashtirish. Poliüretandan kelsak, stoste o'rtacha harorati 20 ~ 40 ℃, harorat nazorat aniqligi ± 1 ℃ hisoblanadi.
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 . 

RIM uchun moddiy

General umumiy qizil rangli: poliüretan qatronlar, vinil Ester, Sherzod, Ester qatronlar, to'yinmagan qizil rangli, epoksi qatronlar va an'anaviy kompozit materiallar, va hokazo 
Odatda moddiy: HD-PU4210, DCP-RIM, AXSON-RIM 875, va boshqalar.

PS: RIM jarayonining Amal qilish muddati to'qimalarining moddasi shakllanishi va mahsulot hajmi qarori bilan asosan hisoblanadi. Bundan tashqari, RIM mahsulotlari mog'or ozod keyin ikkinchi qur davom kerak. RIM jarayoni (15-30 daqiqa / parcha) va yuqori aniqlikdagi tez bo'lib, bu katta miqdorda va katta hajmi mahsulotlar ishlab chiqarish uchun mos, va eng katta tashlash qismini hajmi 10kg uchun 2000mmX1200mmX1000mm hisoblanadi.

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