Rosin - ka mea, 'o loa hana hoihoi mea

Rosin - Ua amorphous, brittle waiwai me ka glassy 'ole a me ke kala mai i ka malamalama melemele i kaʻula. Ua Ua loaa ma hope i puhi ia aku i ka yiaeaiiacaaeneiie ke keʻena o ke kēpau o conifers. Nine waiwai o ka rosin (90% kēpau nāʻakika, a me walaʻauʻana - abietic) e ia insoluble i loko o ka wai, akā, wailana i loko o Etera, ka waiʻona, chloroform a me ka benzene. I ka enaena i 50-120 C. (no kekahi mauʻano likeʻole) rosin kī i hoopalupaluia.

Where i ka hua'ōlelo "rosin"? Keia ua loa paha ka nānaina inoa o ke kahiko Helene kulanakauhale o Colophon, a puni i ulu ka laau e haawi aku ia i ka waiwai. I ka wā kahiko (oi aku mamua o ekolu tausani makahiki aku nei) mai ka hua pisetakia kēpau makaukau ma ka paio hahana maoli nō i ke koena maloo o kaʻoi loa primitive rosin waiwai.

Rosin - he mea kalaima, me ka i ia mea hiki ole i ka pāʻani, e like me ka violin, viola, papalua nui uila, cello. I ka anaanai kakaka'āpana o keia waiwai produces noa nā lātoma a haawi aku i kekahi mea pīlali i ke kaula, ai extracting kani. Oia rosin pinepine paka 'ole-hanalima ano, kēpau ohi wale haule me ka hou o ka "malu" nā mea hoʻohui i i kēlā me kēia kā lākou mau momoku ahi (hiki ke huiia mea hiki ke hooheheeia, i ke kala a me ke gula, lepo, etc.). Eia hou, i ka rosin mua hamoʻia i nā kapuwaʻi o nā haʻuki ma mua, no ka laʻana, wrestlers a me jockeys ho'ēʻe aku ma mua o ka Jump.

Rosin - he waiwai i i lohe nui ia, a noi i loko o ka hana. I ka wā ma mua, ka mea i koi ia ma ke kopa-ana,? Iecaianoaaiiie o adhesives, hoailona iho la i mahuahua. I kēia lā Loko me ka rosin hoʻohana no ka hoʻopunipuni ke aniani paipu, e hoolilo i ka chap no ka hana ana o varnishes, pai ana i ka hana ma ka brazing na hana, e like me ka pono me ia ma ka pepa oihana puolo. A me kela wahi keia wahi, ka mea pili i ka papa kuhikuhiE hiʻona - ka hiki e ho okumu Padfolio i huiʻia ka wā enaena.

rosin? iecaianoaaiiuo i mau i ole ma o ka millennia hoʻololi. E hoʻomaka ana i nā puke (tarred iʻa wale ohi kēpau - oleoresin) ua waihoia ma ka polū, ma ka mea, ua malamaia lakou nei, me ka mahu a wela i ke ahi. Mai quintal oleoresin loaa ma kahi o 12 kg o ka hua pisetakia (i puhi ia) a 70 kg o ka rosin, i ua hoolapalapaia i ka wehe loli, a waiho i ipu. Inā i ka waiwai a ua loko mai o ke kumu, ka mea i mālama '-paopaoʻia, a laila, i ka läÿau, o? Inoaia, a ua hoolilo i ka wai, e pōʻalo kaʻina. Hookahi cubic mika o ka laau ke loaa ka tarred e pili ana i kilograms kanaha o ka rosin.

He aha nō i ka papa kuhikuhiE hoʻokonukonu mea i hoʻohanaʻia e hana i paka rosin? № GOST 19113 - 84, ma ka 'ana, ke kumu o ke koi no ka nui o nā huahana a? Iecaianoaaiiuo kiko'î. Mai ka mea, ua hiki ke aʻo mea e ia i ka nānā aku, mai rosin, ka mea i kaʻoluʻolu nuʻa, wai maʻiʻo, i ka i hoopalupaluia, wahi,ʻakika helu, etc. ka palapala i kuhikuhi mai la lakou i ka mālama pono o ka? Iecaianoaaiiie kaʻina (rosin -. He moderately mea pepehi waiwai, mai kona aerosol hiki i mea ukiuki loa), ae o na rula, ki ina hana like o ka Ikepili o ka hoʻopau 'ana i huina hoonui, pūnaewele a me ka palapala hoʻokō rula.