Dab tsi yog qhov cuam tshuam ntawm qib sib txawv ntawm cov xov paj zoo?
Qhov kev sib tw ntawm cov xov paj tsis tsuas yog cuam tshuam rau cov tsos zoo xws li txoj kab uas hla thiab luster ntawm cov xov paj, tab sis kuj cuam tshuam rau sab hauv zoo thiab xav zoo li lub zog, elasticity, thiab elongation ntawm cov xov paj. Yog li ntawd, nws yog ib qho tseem ceeb tshwj xeeb los txiav txim siab qib ntawm cov xov paj twist hauv cov txheej txheem textile.
(1) Cov nyhuv ntawm cov xov paj txoj kab uas hla thiab ntom
Twisting ua rau cov fibers nyob rau hauv ib tug tib yarn ua ntom, ua rau ib tug txo nyob rau hauv qhov sib txawv ntawm cov fibers, nce nyob rau hauv qhov ceev ntawm ib tug xov tooj, thiab ib tug txo nyob rau hauv txoj kab uas hla. Thaum lub twist coefficient nce mus rau ib qho nqi, qhov compressibility ntawm fibers nyob rau hauv ib lub xov paj yuav tsawg heev, thiab qhov ceev hloov me ntsis nrog qhov nce ntawm twist coefficient. Ntawm qhov tsis sib xws, vim qhov kev xav ntau dhau ntawm cov fibers, nws tuaj yeem ua rau me ntsis nce lub cheeb ntawm cov xov paj. Txoj kab uas hla thiab qhov ceev ntawm cov xov paj ply kuj muaj feem xyuam rau txoj kev sib tw ntawm cov xov paj ply thiab ib lub xov paj. Thaum txoj kev sib tw ntawm cov xov paj ply zoo ib yam li cov xov paj ib leeg, kev sib raug zoo ntawm cov xov paj sib txawv, qhov ntom ntom, thiab txoj kab uas hla zoo ib yam li cov xov paj ib leeg. Thaum txoj kev sib tw ntawm cov ply yarn yog qhov sib txawv ntawm cov xov paj ib leeg, thaum lub twist coefficient ntawm ply yarn me me, vim qhov tsis sib xws ntawm cov xov paj ib leeg, qhov ntom ntawm cov ply yarn txo qis thiab txoj kab uas hla nce; Thaum lub twist coefficient nce mus txog ib qho nqi, qhov ceev ntawm cov strand nce nrog qhov nce ntawm cov twist coefficient, thaum txoj kab uas hla txo nrog qhov nce ntawm twist coefficient. Raws li qhov twist txuas ntxiv, qhov ceev tsis hloov ntau, tab sis txoj kab uas hla maj mam nce.
(2) Cov nyhuv ntawm cov xov paj muaj zog
Rau staple fiber yarns, lub luag haujlwm ncaj qha tshaj plaws ntawm kev sib tw yog kom tau lub zog, tab sis nws tsis yog tias qhov ntau dua qhov sib tw, qhov ntau dua lub zog ntawm cov xov paj. Yog vim li cas yog tias muaj ob qho laj thawj rau kev txhim kho cov xov paj lub zog thiab cov yam tsis zoo rau cov xov paj lub zog.1. Qhov zoo tshaj plaws(1) yog ib qho kev sib tw twist, uas ua rau kom lub siab centripetal ntawm cov fibers ntawm cov xov paj, ua rau kom muaj kev sib txhuam ntawm cov fibers, thiab txo qhov muaj peev xwm ntawm cov xov paj tawg vim fiber ntau slippage. (2) Twisting txo lub zog tsis sib xws ntawm cov xov paj ntawm qhov ntev. Nyob rau hauv qhov kev txiav txim ntawm tensile sab nraud quab yuam, xov paj tawg ib txwm tshwm sim ntawm qhov chaw uas lub zog ntawm cov xov paj yog qhov tsawg tshaj plaws, thiab lub zog ntawm cov xov paj yog lub zog sab nraud uas lub nplhaib tsis muaj zog tuaj yeem tiv taus. Raws li cov twist coefficient nce, ntau twist yog faib ntawm lub voj tsis muaj zog, uas ua rau kom lub zog ntawm lub voj tsis muaj zog piv rau lwm qhov chaw, yog li ua kom cov xov paj muaj zog.2. Yam tsis zoo(1) Twisting ua rau cov fibers hauv cov xov paj tig, txo cov axial quab yuam los ntawm cov fibers, yog li txo lub zog ntawm cov xov paj. (2) Thaum cov xov paj twisting, fibers yog prestressed, thiab thaum lub xov paj yog stressed, lub peev xwm ntawm cov fibers dais sab nraud quab yuam txo. Kev cuam tshuam ntawm kev sib tw ntawm lub zog ntawm cov xov paj yog kev sib koom ua ke ntawm qhov sib txawv ntawm qhov zoo siab thiab qhov tsis zoo. Thaum cov twist coefficient me me, cov khoom muaj txiaj ntsig ua lub luag haujlwm tseem ceeb, vim tias cov xov paj muaj zog nce nrog qhov nce ntawm qhov sib tw coefficient. Thaum lub twist coefficient nce mus txog ib qho nqi, qhov tsis zoo ntawm cov khoom ua si ua lub luag haujlwm, thiab lub zog ntawm cov xov paj txo qis nrog qhov nce ntawm qhov sib tw coefficient. Lub twist coefficient thaum lub xov paj lub zog mus txog qhov siab tshaj plaws yog hu ua qhov tseem ceeb twist coefficient (ak nyob rau hauv daim duab), thiab cov sib tw twist yog hu ua qhov tseem ceeb twist. Nyob rau hauv tus txheej txheem tsim, ib tug twist tsawg tshaj li qhov tseem ceeb twist feem ntau yog siv los txhim kho cov efficiency ntawm lub spinning thav duab thaum ua kom lub zog ntawm cov xov paj.
(3) Cov nyhuv ntawm cov xov paj tawg elongation
Rau ib cov xov paj, twisting txo qhov muaj peev xwm ntawm fiber ntau slippage nyob rau hauv cov xov paj thiab tsub kom fiber ntau elongation thiab deformation, manifested los ntawm ib tug txo nyob rau hauv xov elongation ntawm tawg. Txawm li cas los xij, nrog kev nce ntawm kev sib tw coefficient, qhov inclination degree ntawm fibers hauv cov xov paj nce, thiab muaj kev nyiam los txo qhov inclination degree ntawm fibers thiab ua rau cov xov paj thinner thaum stretched, yog li ua rau elongation ntawm tawg ntawm cov xov paj. Nyob rau hauv dav dav, nyob rau hauv lub ntau yam ntawm cov feem ntau siv twist coefficients, qhov zoo tshaj plaws tej yam kev mob outweigh unfavorable yam tseem ceeb, yog li ntawd raws li cov twist coefficient nce, lub elongation ntawm tawg ntawm ib tug xov tooj ib zaug nce. Rau ib tug ply yarn twisted nyob rau hauv tib txoj kev, cov nyhuv ntawm twist coefficient ntawm cov xov paj tawg elongation yog tib yam li rau ib tug xov tooj. Thaum lub twist coefficient yog me me rau ib lub xov paj ply nrog opposite twist, twisting lub ply yarn txhais tau hais tias untwisting ib yarn. Qhov nruab nrab twist amplitude ntawm cov ply yarn txo nrog qhov nce ntawm cov twist coefficient, yog li qhov elongation ntawm tawg ntawm ply yarn txo me ntsis. Thaum lub twist coefficient nce mus txog ib qho nqi, qhov nruab nrab twist amplitude nce nrog qhov nce ntawm tus naj npawb ntawm twists, thiab elongation ntawm tawg ntawm ply yarn kuj nce.
(4) Cov nyhuv ntawm cov xov paj elasticity
Lub elasticity ntawm cov xov paj yog nyob ntawm ob qho tib si elasticity ntawm fiber ntau thiab cov qauv ntawm cov xov paj, uas yog tsim los ntawm twisting xov paj. Rau ib leeg thiab co directional strands, twisting tightens lub xov paj qauv, txo fiber ntau slippage, thiab tsub kom lub extensibility ntawm fiber. Nyob rau hauv lub dav dav twist coefficient ntau, raws li cov twist coefficient nce, lub elasticity ntawm cov xov paj nce.
(5) Cov nyhuv ntawm cov xov paj gloss thiab hnov
Ib leeg xov paj thiab co directional twisted plied yarn, raws li qhov tshwm sim ntawm twisting, inclines cov fibers nyob rau saum npoo ntawm cov xov paj, ua rau saum npoo ntawm cov xov paj ntxhib thiab tsis sib xws, uas ua rau cov luster tsis zoo thiab ib qho nyuaj. Thaum qhov sib piv ntawm qhov sib tw coefficient ntawm cov xov paj plied mus rau qhov sib tw coefficient ntawm cov xov paj ib leeg yog sib npaug rau 0.707, sab nrauv twist amplitude yog xoom, thiab cov fibers saum npoo yog sib npaug rau cov xov paj axis. Nyob rau lub sijhawm no, cov xov paj plated muaj qhov zoo tshaj plaws luster thiab muag muag.
