Phenol-formaldehyde teriuma. Te faaineineraa, me te whakamahi. āhuatanga

Phenol kapia formaldehyde - he kapia waihanga he āhuatanga o thermosets thermosets ranei. Taua resins he matū oligomeric wai ranei, i whiwhi i te polycondensation o formaldehyde ki phenol i roto i te reo waikawa kawakore ranei (resol, novolac kapia bakelite ranei). Tenei atu pā te āhuatanga hua whakamutunga.

Ko te āhuatanga o resins phenol-formaldehyde

Phenol formaldehyde kāpia (tātai [-C6H3 (OH) -CH2-] n) he kaupare mātao hiko tiketike, te waikura pai, me te pūmautanga aunoa. Tino wairewa i roto i waiwaro kakara, me te memeka, ketones me whakarewa chlorinated. he wairewa i roto i rongoā neke, me te waiwai rongoā alkali hoki reira. I muri te whakaora resins phenol-formaldehyde e tahuri ki gustosshitye waerau microheterogeneous o hanganga amorphous.

Hea tono te teriuma phenol formaldehyde te?

- i roto i te hanga o kirihou: teriuma whakapakeke i huaina resite, ua haapuai te hinu i roto i te aroaro o te waikawa sulphonic - karbolit, i roto i te aroaro o te waikawa lactic - neoleykoritami;

- i roto i te hanga o varnishes, adhesives, waihanga, ahunga, Pads whawhati, pōro mō piriote;

- i te karbolit (whakaorangia phenol-formaldehyde kapia) hangaia multimers whare etahi tauira Soviet;

- hoki te taonga e whakamahia ana hei ruruku mo te hanga o tito ka ki niao ki taima rerekē (te rakau paraoa, muka karaihe, cellulose), papa maramara me te fibreboard, ringihia me impregnating tito (hoki te muka ki tonu me ngā rauemi whatu mo te kahupapa) adhesives.

Phenol formaldehyde teriuma: tangohanga me te mātauranga rauropi

Na formaldehyde me phenol whakamahia i roto i te hanga o resins phenol-formaldehyde, he matū paitini, me te he pūkākā. Formaldehyde kāpia he pānga tōraro i runga i te tinana tangata: take o te katoatia me dermatitis. Ano, formaldehyde hoki he āhuatanga carcinogenic.  

Bakelite - whakapakeketia hua o te kapia phenol-formaldehyde i te aroaro o te whakakōkī. Ko tenei mea o te faufaa rahi i roto i ngā ao o te ora tangata. Bakelite Ko te pēne rawakore o te wera, engari whakaaturia ātete pai ki te kino mīhini: ru, ru, te waku pēhanga ranei. Easy ki te mahi i runga i te tarai motuhake. Ko reira he insulator pai. E kore e te alkali diluted, waikawa me te wai te tono i te reira, ki te kahore hoki pungatara kukū waikawa nitric ranei. Ātete ki +300 nekehanga, puta i teitei pāmahana parariraa.

I hangaia tuatahi reira ki te waiho i te whakakapinga mō te shellac - he kapia motuhake whakaputaina i roto i te āhua ngārara unahi kararehe pārūrū.

Phenolics. tono

Phenoplast - he kirihou i whiwhi nei e resins formaldehyde solidification i pāmahana piki i roto i ngā ki tetahi filler. I tēnei wā, he kē i roto i ona āhuatanga i tēnei rauemi. E hanga Mā te phenoplasts:

- taonga tikanga mō papa iahiko tāngia - getinaks;

- he taonga mo te hanga i te rauemi hanganga - PCB;

- ngā āhuatanga cheap mō te kēmu poari - veimau, domino, chess;

- te tahi mau āhuatanga o oko kīhini: kakau hoki stoves hau, hopane me maripi, pata, me hopane;

- kāpia phenolic Bakelite;

- ngā hua hiko - turanga, kōhao, mita hiko, whakakā, tānga, kuhunga pūkaha hiko, pouaka komititanga, actuators autō, aha noa.;

- wāhanga mō te engineering, hei tauira, takahanga hoki escalators, ngā terminals me puku;

- kahu rei, taonga, pānga, etahi kōrero o haora.