CAS 461-58-5 dicyandiamide te paura tioata ma dicyandiamide
Dicyandiamide,Ko te ingoa poto ko DICY, ko DCD ranei.Ko te tikanga matū, ko te C2H4N4.Ko te dimer o te cyanamide,Ko te cyano derivative hoki o te guanidine.Ko tana tikanga matū ko C2H4N4.He paura karaihe ma.Soluble i roto i te wai, te waipiro, te ethylene glycol me te dimethylformamide, tata kore e rewa i roto i te etera me te benzene.Stable ina maroke.
Raraunga hangarau
| Tūemi | Tauwhāiti | ||
| Koeke teitei | Kua whai tohu | Koeke hiko | |
| Te ahua | Kiriata ma | Kiriata ma | Kiriata ma |
| Te rerenga o nga poke | Paahi | Paahi | Paahi |
| Ihirangi % | 99.7 | 99.5 | 99.8 |
| makuku % | 0.30 | 0.30 | 0.2 |
| pungarehu % | 0.05 | 0.10 | 0.02 |
| Ira whakarewa ℃ | 209–212 | 208–212 | 209–212 |
| Te konupora ppm | ≤ 150 | ≤ 200 | 25 |
| ppm ihirangi rino | 10 | 15 | 2 |
| Melamine ppm | ≤ 350 | ≤ 500 | – |
| Turbidity NTU | ≤ 20 | ≤ 20 | 5 |
| Chroma | ≤ 10 | ≤ 10 | – |
Ngā āhuatanga matū
Ko te whakamahi me te rokiroki i runga i te mea kua tohua kaore e taea te whakakore me te karo i te pa ki te waikura.Ko te whakarewatanga i roto i te waihā tino i te 13 °C he 1.26%, i roto i te wai he 2.26%.He ngawari te whakarewa i roto i te wai wera, ka ata pirau te wairewa wai ki te whakaputa hau haukinia. i te wa i runga ake te pāmahana i te 80 ° C. Ka werahia te karaihe o te dicyandiamide ki te waahi whakarewa, ka kaha te wera i muri tonu i te rewa ki te whakaputa melamine, melamine, me etahi atu.
Taupānga:
Ka whakatau i te cobalt, nickel, copper me te palladium.Organic Synthesis.Nitrocellulose stabilizer.Hardener.Detergent.Vulcanization accelerator.Resin synthesis.
Ka whakamahia hei kaikawe rongoa huna mo nga adhesives kapia epoxy.Ko te hanga i tetahi waahanga epoxy adhesives.Ko te rahi o te matūriki o te dicyandiamide he iti iho i te rite ranei ki te 5μm (2500 mesh), ka taea e ia te hanga i te whakatārewatanga i roto i te kapia epoxy kaore he rerenga. Ko te inenga tohutoro ko te 4-12 nga waahanga, a ko te oranga o te 100g epoxy resin hanganga he 6-12 marama. I te wa ko te waahanga o te dicyandiamide he 17 nga waahanga, ko te wa rokiroki he iti iho i te 2 marama. Ina ko te waahanga he 8 nga waahanga, ko te rokiroki. Ka taea te roa ki te haurua o te tau.Curing conditions170℃/lh or 180℃/20min.Heat distortion temperature 125℃.Also used as curing agent for one-compone waterborne epoxy adhesives.The reference dosage is 7 servings.The pūnaha pūhui o te dicyandiamide (5-6 nga waahanga) me te hydrazide (3-4 nga waahanga), Ka taea e ia te rongoa i te kapia epoxy i te 120 ℃ / 45min.
Mōkī:20 kg/50 kg/100 kg ia pp peeke raranga;
25 kg/pepa-kirihou putea hiato mo te tohu hiko.
Tikanga rokiroki
- Te rokiroki hiri i te 2 ℃ ~ 8 ℃, te rokiroki i roto i te waahi hau me te maroke, te karo i te pa ki etahi atu waikura.I te wa e kawe ana me te utaina, me tiaki mai i te makuku me te whakahaere ma te tupato.
- Kiia i roto i te peeke raranga me te peeke kirihou o roto, e 5 nga paparanga peeke pepa kraft kikii.Me hiri te waha o te peeke kia kaua e turuturu.Ko te taumaha kupenga 25±0.2kg mo ia peeke.
Whakaaturanga wheketere
