Rosin - na ọ bụ nnọọ na-akpali stof

Rosin - bụ amorphous, kenkuwa umi-enwe a yiri enyo Ọdịdị na agba site ìhè edo edo ka ọchịchịrị red. Ọ na-nwetara mgbe distilling kwụsịrị obodo akụrụngwa nke resin nke conifers. Chemical Njirimara nke rosin (90% resin asịd, gụnyere isi - abietic)-eme ka ọ unyi anaghị agbasa na mmiri ma soluble na ether, na mmanya, chloroform na benzene. Mgbe ewe iwe ka 50-120 C. (n'ihi na iche iche iche) rosin Ogwe na-ịrọ arọ.

Olee ebe okwu "rosin"? Nke a na-yikarịrị na-ekpu aha nke Gris oge ochie obodo nke Colophon, gburugburu nke toro osisi ndị na-enye ndị dị otú ahụ a umi. N'oge ochie (karịa puku afọ atọ gara aga) si turpentine resins kwadebere site kpo oku a akọrọ fọduru bụ kpọmkwem oge ochie rosin umi.

Rosin - ihe ngwa, na-enweghị nke na ọ gaghị ekwe omume na-egwu, dị ka violin, Viola, abụọ bass, cello. Mgbe rubbing ụta mpempe a umi na-arụpụta free ụmụ irighiri nke na-enye a na-adhesion ka eriri, si otú adịrị ụda. Dị otú ahụ rosin mgbe emepụta abụghị-ulo oru ha n'ụzọ, resin anakọtara naanị ada na mgbakwunye na nke "ihe nzuzo" Efrata nke nwere onye ọ bụla ha ika (nwere ike kwukwara metal, ọlaọcha ma ọ bụ ọbụna gold ájá, wdg). Ke adianade do, rosin tupu ụlọ akwụkwọ ji agwụ ọbụ sports tupu, n'ihi na ihe atụ, mgba na jockeys sadulu n'ihu na-awụlikwa elu.

Rosin - a umi na e n'ọtụtụ ebe na etinyere na ụlọ ọrụ. Na mbụ, ọ na-ekwu na ncha na-eme, na mmepụta nke adhesives, akara wax. Taa ụgbọ oloko na rosin eji maka gwara iko akpa mee okpu maka imewe nke varnishes, bipụtara na-arụ ọrụ na brazing ọrụ, nakwa dị ka na akwụkwọ ụlọ ọrụ. Na n'ebe nile, ọ na-emetụta ndị isi mma - ike ike nnyapade ogige mgbe ewe iwe.

rosin mmepụta n'ozuzu agbanwebeghị n'elu millennia. Malite ihe onwunwe (tarred stumps anakọtara resin - oleoresin) na-enịm ke cubes, ebe ọ na-emeso ya na uzuoku ma ọ bụ kpụ ọkụ n'ọnụ na ọkụ. Site quintal oleoresin nwetara banyere 12 n'arọ nke turpentine (distilled) na 70 n'arọ nke a rosin, nke na-sie wepụ ọmụmụ na enịm n'ime containers. Ọ bụrụ na umi na-amịpụtara si ogwe, ha tupu anuahade na mgbe a ngwakọta nke ibe na mmiri na-doro mmịpụta usoro. Otu cubic mita nke osisi nwere ike ina tarred banyere iri anọ kilogram nke rosin.

Gịnị bụ isi usoro iwu ngwá na-eji ụlọ ọrụ na-emepụta rosin? № GOST 19113 - 84, akpan akpan, bụ isi a chọrọ maka a ọnụ ọgụgụ nke ngwaahịa na mmepụta kwa. Site na ya na anyị nwere ike ịmụta ihe ga-ọdịdị si rosin, ihe na-anabata ndị njupụta, mmiri ọdịnaya, ndị softening ebe, acid nọmba, wdg The akwụkwọ kwukwara na nche chọrọ nke mmepụta usoro (rosin -. Ọ bụ moderately ize ndụ umi, ebe ya aerosol nwere ike ime ka iyatesịt), nabata iwu, ụzọ nke analysis nke okokụre ngwaahịa, nchekwa na akwụkwọ ikike iwu.