The key role of polyurethane catalysts in the production of spray foam insulation materials

Ka'idar samar da kayan feshi na kumfa

Rufin Feshi na Kumfa (SPF) wani kayan kariya ne na zafi wanda aka ƙera ta hanyar haɗa muhimman abubuwa guda biyu - resin polyol da isocyanate. Lokacin da aka haɗa waɗannan abubuwan ruwa guda biyu a cikin na'urar feshi ta musamman, saurin amsawar sinadarai yana faruwa a ƙarƙashin aikin mai kara kuzari, kuma iskar carbon dioxide tana fitowa a lokaci guda, wanda ke sa cakuda ya faɗaɗa sau 30-60 cikin daƙiƙa 10-15, daga ƙarshe ya samar da kumfa polyurethane mai kyawawan kaddarorin kariya na zafi.
Wannan tsari na sinadarai ya ƙunshi manyan halayen guda biyu:
1. Maganin Gel: isocyanate yana amsawa da polyol don samar da kwarangwal na polymer polyurethane
2. Maganin kumfa: isocyanate yana amsawa da ruwa don samar da iskar carbon dioxide

Kyakkyawan aiki naMXC-BDMAmai kara kuzari

MXC-BDMA (N,N-dimethylbenzylamine, CAS 103-83-3) wani sinadari ne mai inganci wanda aka inganta don feshi mai tauri, tare da manyan fa'idodi masu zuwa:

1. Daidaiton sarrafa martani

- Yana samar da daidaiton amsawar kumfa/gelling mai kyau (rabo na amsawa na iya zama daidai zuwa ±3%)
- Yana tabbatar da cewa akwai tsayayyen lanƙwasa mai tasowa (ɓacewa tsayin faɗaɗa ƙasa da 5%)
- Yana daidaita da yanayin zafi da danshi daban-daban (aiki mai karko a cikin kewayon 5-35℃)

2. Kyakkyawan ingancin kumfa

- Yana samar da tsarin ƙwayoyin halitta masu rufewa iri ɗaya (rabobin ƙwayoyin halitta masu rufewa> 90%)
- Ana sarrafa diamita na tantanin halitta a cikin mafi kyawun kewayon 100-300μm
- Yana ƙara ƙarfin haɗin gwiwa tare da substrate da kashi 40% (gwajin ASTM D1623)

3. Fa'idodin tsari

- Yana ƙara yawan ruwa na farko da kashi 25%, yana tabbatar da cike gibin gine-gine masu rikitarwa gaba ɗaya
- Lokacin tsaftacewa yana raguwa da kashi 15-20%, wanda hakan ke inganta ingancin ginin.
- Tsarin wari mara ƙamshi (VOC <50μg/m³) yana inganta yanayin aiki.

Muhimmin aikin damasu kara kuzaria cikin samar da SPF.

A matsayin "mai sarrafa martani" na samar da polyurethane, tsarin mai kara kuzari yana tabbatar da samuwar kumfa mai inganci ta hanyoyi uku:
1. Tsarin motsa jiki:
- Daidaita lokacin fara amsawa (yawanci daƙiƙa 15-30)
- Daidaita matsakaicin zafin jiki na waje (gabaɗaya ana sarrafa shi a 140-160℃)
- Daidaita samar da iskar gas da ƙimar warkar da polymer
2. Inganta tsarin gini:
- Masu haɓaka sinadarin Amine (kamar MXC-BDMA) suna mamaye samuwar iskar gas
- Masu haɓaka ƙarfe (kamar octoate mai ƙarfi) suna daidaita haɗin haɗin polymer
- Amfani da haɗin gwiwa zai iya samun tsarin rami mai kyau
3. Inganta aiki:
- Inganta daidaiton girma (yawan canjin girma <1%)
- Inganta ƙarfin lantarki na zafi (har zuwa 0.020-0.028W/m·K)
- Ƙarfin injina mai ƙarfi (ƙarfin matsi> 150kPa)

Mafita aikace-aikacen masana'antu

MXC-BDMA ya dace musamman don samar da kumfa mai feshi a waɗannan fannoni:

Rufin gini

- Tsarin rufin bango na waje
- Rufin rufin ruwa mai hana ruwa
- Aikin rufewa a cikin sanyi

Kayan aikin masana'antu

- Jaket ɗin rufe bututun
- Kariyar rufin tanki
- Rufin kayan aiki na tsari

Muhalli na musamman

- Tsarin yanayin zafi mai ƙarancin zafi (ƙasa da 5℃)
- A yi amfani da shi a wuraren da ke da zafi sosai (RH> 80%)
- Feshin saman tsaye da rufi

Tallafin fasaha na ƙwararru

Muna samar wa masana'antun feshi kumfa da:
- Sabis na inganta tsari: Daidaita tsarin catalytic bisa ga sigogin kayan aikin ku
- Gano Tsarin Aiki: Magance Matsalolin da Aka Saba Kamar Rage Kumfa da Tsagewa
- Gwajin Samfura: Samar da fakitin gwaji 50-100g don ƙananan gwaje-gwaje
- Horar da fasaha: A riƙa gudanar da tarukan fasaha na samar da SPF akai-akai