Hydroxypropyl acrylate
Tirohanga Whānui o te Hua
Ko te Hydroxyethyl Acrylate (HEA) he monomer mahi kotahi e taea te whakamahi, ā, he poraka hanga matua hoki i roto i te matū polymer. Kei roto ko te here takirua kiriaku ka taea te polymerize me te rōpū hydroxyl tauhohe i roto i te ngota kotahi. Mā tēnei hanganga ka taea e ia te uru ki te copolymerization me te whānuitanga o ngā monomer me te whai wāhi atu ki ngā tauhohenga hononga whakawhiti. He wai mārama, kore tae ki te kōwhai mārama, ā, e mōhiotia ana mō te whakarei ake i ngā āhuatanga mahi o ngā hua polymeric whakamutunga, ahakoa he iti noa te whakamahinga.
Whakatakotoranga
| Ingoa Hua | Hydroxypropyl acrylate |
| Tātai Matū | CH₃CHCOO(CH₂)₃OH |
| Tau CAS | 25584-83-2 |
| Tau EINECS | 247-113-0 |
| Āhua o te Hua | Wai mārama |
Pepa Whakahaere Kounga
| Āhua | Wai mārama, kore tae, tae noa ki te kōwhai mārama, kāore he poke ā-mīhini. |
| Monoester, wt% | ≥ 93.0 |
| Te Parakore (Ester Katoa), w% | ≥ 97.0 |
| Tae, Hazen | ≤ 30 |
| Te nui o te wai, w% | ≤ 0.30 |
| Te waikawa (hei waikawa kiriaku), w% | ≤ 0.30 |
| Ārai (MEHQ), mg/kg | 300±50 |
Ngā Whakatakotoranga Matua o te Hydroxypropyl Acrylate
| Āhua | He wai mārama, kore tae ki te kōwhai mārama |
| Parakore (%) | ≥ 96.0 (te tikanga > 99.0) |
| Te Ihirangi Wai (%) | ≤ 0.5 |
| Ārai (MEHQ) | 200 ± 20 ppm |
| Uara Waikawa (mg KOH/g) | ≤ 1.0 |
| Tae (APHA) | ≤ 30 |
| Te mātotoru (20°C) | ~ 1.05 karamu/cm³ |
| Te Pūtake Kohua | ~ 77 °C (i te 5 mmHg) |
Ngā Whakamahinga Matua o te Hydroxypropyl Acrylate
Nā ngā mahi takirua a te HPA ka taea te whakamahi puta noa i ngā ahumahi kanorau. Ko tana mahi matua he mahi hei waimeha tauhohe me te kaiwhakarato pae honohono.
Ngā paninga me ngā waituhi:
Ngā Paninga Whakamahana: He rite ki te co-monomer i roto i ngā paninga motuka, ahumahi, me ngā paninga koiri. Ka honoa ki ngā kapia melamine, isocyanate, epoxy rānei, ka hua ake he kiriata tino pakari, he ātete matū, he ātete ki ngā paru, me te kanapa teitei.
Ngā Pūnaha Whakaora-Irahiko: Whakamahia i roto i ngā paninga whakaora-UV/EB, ngā waituhi, me ngā piripiri. Mā te rōpū hydroxyl ka taea te hanga i ngā urethane acrylates me ngā āhuatanga whakarei ake.
Ngā Kapia Ātete-Whakaahua: He wāhanga matua i roto i ngā kapia tairongo-whakaahua mō te hanga haurua-ira me te whakaaturanga.
Ngā Piripiri me ngā Hiri:
Ka whakapai ake i te piri ki ngā papa uaua ki te hono pērā i ngā konganuku me ngā kirihou kua tukatukahia.
Ka whakarei ake i te mātotoru hononga whakawhiti, ka hua ake he ātete wera, he ātete matū, me te kaha piri i roto i ngā piripiri tairongo-pēhanga (PSA) me ngā piripiri hanganga.
Ngā Kakahu me ngā Muka:
Whakamahia hei kaihoko maimoatanga muka hei whakarerekē i ngā muka hangai, hei whakapai ake i te āheinga tae, ngā āhuatanga ārai-patū, me te mimiti makuku.
Ngā Resin Hanga me ngā Kirihou:
Hei whakarerekētanga mō te kiriaku me ētahi atu kapia hangai, ka whakawhiwhia e te Hydroxypropyl acrylate te ātete pai rawa atu ki te huarere, te ātete ki ngā pānga, me te ngāwari.
Ngā Whakamahinga kē atu o te Hydroxypropyl Acrylate:
Te Tukatuka Pepa: Hei wāhanga kapia kaha me te paninga.
Ngā Matū Maimoatanga Wai: Whakamahia hei hanga i ngā aukati unahi me te aukati waikura.
Ngā Tāpiri Hinu: Hei matū mua mō ngā whakapai ake i te taupū matotoru me ngā mea whakamarara.
Ngā Āhuatanga Matua me ngā Painga o te Hydroxypropyl Acrylate
Te Tauhohenga Tino Pai: Ka tere te whakakotahi o te rōpū acrylate me te whānuitanga o ngā monomers vinyl me te acrylic (hei tauira, te methyl methacrylate, te butyl acrylate, te styrene, te acrylonitrile).
Te Kaha ki te Hononga-Whaia: Ka tere te tauhohe o te rōpū hydroxyl piri ki ngā diisocyanates, ngā anhydrides, me ngā amino resins (hei tauira, te melamine), ka taea ai te hanga i ngā whatunga polymer pakari, toru-ahu.
Te Piringa Whakapai Ake: Ka whakatairanga i te hononga kaha ki ngā momo papa.
Whakapai Ake i te Pakari: Ka whai wāhi ki te ātete tino pai ki ngā matū, ngā whakarewa, te huarere, me te mārama UV.
Ngā Mahi Whānui: Ka taea te whakamahi i roto i te tini o ngā tukanga whakapūhui, tae atu ki te otinga, te whakaemulsion, te whakatārewatanga, me te whakapūhui papatipu.
Te Whai Hua o te Mahi: Ka puta he whakapainga nui ki ngā āhuatanga o te hua whakamutunga ahakoa he iti te whakamahinga (1-10% te nuinga).
Te Whakahaere me te Rokiroki
Rokiroki: Rokirokihia ki tētahi wāhi hauhautanga, pōuri, ā, he pai te hauhautanga. Kia mau te katia o ngā ipu. Ko te pāmahana rokiroki e taunakitia ana kei waenga i te 15°C me te 25°C (59°F me te 77°F).
Ārai: Kei roto ko te MEHQ (Methoxyphenol) hei ārai i te whakapūhuitanga hei ārai i te whakapūhuitanga-ake i te wā e rongoa ana, e kawe ana hoki. He mea nui kia mau tonu tēnei ārai kia pumau ai.
Te whakahaere: Āraia te pā ki te wera, ki ngā mura ahi, ki ngā mura tuwhera, me ngā matū whakapūngao kaha. Whakamahia me te hauhautanga tika, ā, mauria ngā taputapu tiaki whaiaro (PPE) e tika ana, tae atu ki ngā karapu ātete matū, ngā mōhiti haumaru, me ngā kākahu tiaki.
Te Roa o te Paunga: Ko te tikanga he 12 marama mai i te rā i hangaia ai mēnā ka rongoatia i raro i ngā tikanga kua tūtohutia.