Phenol-formaldehyde kēpau. Ka makaukau a me ka ana. waiwai

Phenol formaldehyde kēpau - he kemikala kēpau ka waiwai o thermosets a thermosets. Oia kēpau i oligomeric a wai 'ona, loaa ma ka polycondensation o formaldehyde me phenol i loko o kaʻakika a'ākilikai meakino (resol, novolac kēpau a bakelite). Kēia no hoi e loli ai ka hope loa huahana waiwai.

Nā waiwai o ka phenol-formaldehyde kēpau

Phenol formaldehyde kēpau (haʻilula [-C6H3 (OH) -CH2-] N) i ke kiʻekiʻe uila'īpale, maikai ka popopo, a me mechanical kumupaʻa. Pono wailana ma onaona a me ka aliphatic hydrocarbons, ketones a me chlorinated nā'uheheʻe. Ua mea i wailana ma Polar pāʻoihana a me koʻana koko mekala 'åkilikai pāʻoihana. Ma hope iho, hoola iho phenol-formaldehyde kēpau i hoohuliia mai i loko o gustosshitye microheterogeneous polymers o amorphous 'ole.

Where ka phenol formaldehyde kēpau ua noi ia?

- i loko o ka? Iecaianoaaiiie o Ka lula ea Ke: hoopaakikiia kēpau kapa resite, solidified ka aila ma ka alo o sulphonic nāʻakika - karbolit, ma ke alo o lacticʻakika - neoleykoritami;

- i loko o ka? Iecaianoaaiiie o varnishes, adhesives, kemikala, nā mea pilihao, wawahi iho nā pale poʻohiwi, waihoʻoluʻu no billiards;

- mai karbolit (hoola phenol-formaldehyde kēpau) ua hanaʻia hale multimers kekahi Soviet Ke Ana Hoʻohālike;

- no hoi ka waiwai hoʻohana like me ka mea hoʻopaʻa i ka? Iecaianoaaiiie o ua piha mōlina mele me kekahi mau fillers (lāʻau palaoa, aniani puluniu, kelulose), chipboard a me ka fibreboard, ninini a impregnating mele (no ka piha puluniu, a lole mea no plywood) adhesives.

Phenol formaldehyde kēpau: loaa a me ka kālaikaiaola

A me ka formaldehyde a me phenol hoʻohana ma o ka hana o ka phenol-formaldehyde kēpau, uaʻawahia a me ka flammable waiwai. Formaldehyde kēpau i ka hopena maikaʻi 'ole ma ke kanaka kino: kumu o ka eczema a me ka dermatitis. A, formaldehyde kekahi mea carcinogenic waiwai.  

Bakelite - hoopaakiki iho huahana o ka phenol-formaldehyde kēpau ma ke alo o ka hōʻeleu. Kēia mea o ka nui i loko o kekahi mau spheres o ke kanaka ola. Bakelite mea he alakaʻi meleʻilihune o ka wela, akā, hōʻike maikai ia'ku i ÿole mechanical pōʻino: kŰia, kŰia, kū'ē 'ole puʻe. Oluolu i ka hana ma luna o ke kupaianaha lathe. He He insulator maikai. Na nāu kekahi mekala 'åkilikai,ʻakika a me ka wai ka mea, aole i pili, koe wale no ka i kia sulfuric a nitric nāʻakika. Hoʻopale i +300 degere, ia lŘlŘ ma kahi maikai ae'ā ana wela.

Ua Ua mua ke hoʻololi i ia i pani no ka shellac - he kupaianaha kēpau hua mai la i ke ano maoli Tropical lacquer unahiʻole, i nā mea kolo.

Phenolics. palapala noi

Phenoplast - he ea a ua loaa ia ma ka solidification formaldehyde kēpau ma ke kiekie mahana ma ka hui pu ana me kekahi filler. Currently, ua lako mea unsurpassed i loko o kona waiwai. E ho ohana i phenoplasts i i:

- waiwai manaoia no i paiia kaapuni papa - getinaks;

- he waiwai no e pili ana i ka mall mea - PCB;

- nike nā kumumea no ka papa lealea - nā lātike, dominoes, Mū Kākela;

- kekahi kumu o ka lumi kuke accessories: e paʻa ai no ka kinoea stoves, ipu lepo a me nā pahi, a me nā ipu ipu;

- Bakelite phenolic glue;

- pou huahana - kumu, kuʻina koʻo, uila mika, mea hoʻololi, kuapo kanaka, uila Hawaii neo? Aaiiai?, Hookui ana poho, ʻume mākenēki actuators, a pela aku.;

- eiiiiiaiou no ka hana 'enekinia, e laʻa me, a me ke kapuai no escalators, kela maʻi a me knobs;

- lole jewelery, souvenirs, kālana, kekahi lāliʻi o ka hola.