Kudzivirira furo respray ipurasitiki inochinjika uye inoshanda zvakanyanya inogadzirwa kubva mumakemikari anoshandiswa muzvikamu zviviri zvikuru (polyol resin neisocyanate). Kana zvabatanidzwa, zvinhu zviviri izvi zvinopindirana kuti zvigadzire furo repolyurethane rakakura rinovhara uye rinodzivirira nzvimbo. Kudiwa kuri kukura kwekudzivirira furo repamusoro-soro kwekushandisa mudzimba, mumabhizinesi nemaindasitiri kwakaita kuti pave nekuwedzera kwekushandiswa kwekudzivirira furo respray rine insulation yepamusoro, kudzivirira hunyoro uye rutsigiro rwechivakwa.
Magadzirirwo Anoitwa Kudzivirira Foam neSpray
Kugadzirwa kwefoam inopfapfaidzwa kunoenderana zvakanyanya nekudyidzana kuripo pakati pemapolyol nemaisocyanates, ayo anokura kuti azadze nzvimbo yacho uye ooma kuita foam inopfapfaidzwa mushure mekupfapfaidza. Zvisinei, maitiro aya anoda kudzorwa kwakanyatsojeka kuti ave nechokwadi chekuti foam iri kuzara, chimiro uye kufanana kwakakodzera. Pano,polyurethane catalystinoita basa guru mukutungamira nekudzora maitiro.
Basa reCatalysts mukugadzirwa kwePolyurethane Foam
MaCatalyst akakosha mukugadzirwa kwepolyurethanes nekuti anowedzera zvakanyanya reaction rate uye anodzora nguva yegel, izvo zvakakosha kuti furo riwedzere zvakanaka. Catalyst inogonawo kudzora reaction dzechipiri, dzakadai sewater reaction, iyo inoburitsa gasi rinodiwa kuti bubble ritange. Kuenzana pakati pema reaction aya kwakakosha pakugadzirwa kwemaumbirwo efuro akafanana ane chimiro chemasero uye hunhu hwakafanana. Mukugadzirwa kwepolyurethane, macatalyst anowanzo kamurwa muzvikamu zviviri:zvinokonzeresa amineuyezvinokonzeresa zve organometallic(zvakadai se organotin, bismuth, uye zinc).
MXC-TMA neMXC-BDMA: Zvinokonzera Kudzivirira Foam Yekupfapfaidza
ZvinokonzeraMXC-TMAuyeMXC-BDMAzvine zvakanakira zviri pachena mukugadzirwa kwe spray foam insulation.MXC-TMAimvura isina ruvara kusvika yero yakajeka inokurudzira trimerization ye polyisocyanurate kuti igadzire curve yakafanana uye inodzorwa yekukwira. Catalyst inoshandiswa zvakanyanya mumafuro akaomarara anoda kunatsiridzwa kwakawedzerwa uye kugara achigadziriswa, uye isarudzo yakanaka yekushandisa insulation inoda kusimba kwechimiro.
Pane rimwe divi,MXC-BDMA(N, N-dimethylbenzylamine, CAS nhamba 103-83-3) chinhu chinowanzo shandiswa mukushandisa furo rakaoma. Chinowedzera kuyerera kwefuro pakutanga, chinoita maburi akafanana uye chinoita kuti pave nechisungo chakasimba kune substrate. Izvi zvinoita kuti MXC-BDMA ive yakakodzera kushandiswa kwekudzivirira kupisa kwakanyanya mukushandisa furo rinopfapfaidzwa, uko chimiro chefuro chakasimba, chinogara kwenguva refu uye chinonamira chakakosha.
Mhedziso
Zvishandiso zvePolyurethane zvakaita seMXC-TMA neMXC-BDMA zvakakosha pakuwana mhando yezvinhu zvekudzivirira furo rekupfapfaidza. Hunhu hwazvo hwakasiyana hunobvumira kudzora kwakaringana kwekuumbwa kwefuro, zvichiita kuti kuputira kushande zvakanaka mumhando dzakasiyana siyana. Sezvo kudiwa kwemhinduro dzekudzivirira dzinoshandisa simba shoma kuri kuramba kuchikura, zvishandiso zve polyurethane zvemhando yepamusoro zviri kuramba zvichitamba basa rakakosha mukupa kuputira furo rekupfapfaidza remhando yepamusoro uye rinogara kwenguva refu.
Nguva yekutumira: Mbudzi-06-2024