Zoo li muaj ntau qhov kev xav tsis zoo txog qhov sib txawv ntawm polyurethane thiab polyethylene ua npuas ncauj. Nov yog qee qhov tseeb los pab qhia koj kom nkag siab tias cov ntsiab lus ntawm cov foams txawv li cas, thiab lawv cuam tshuam li cas rau cov khoom siv gymnastics ua nrog ib (los yog ob qho tib si) ntawm hom foams.
Puas muaj qhov sib txawv ntawm qhov zoo ntawm cov foams?
Kev ua tau zoo tsis cuam tshuam qhov sib txawv ntawm ob lub npuas no. Lawv muaj cov khoom sib txawv thiab yog li siv hauv kev sib txawv gymnastics lossis martial arts applications. Ib tug tsis zoo los yog phem dua lwm tus; lawv txawv.
Dab tsi yog qhov txawv ntawm polyethylene ua npuas ncauj thiab polyurethane ua npuas ncauj?
Dab tsi yog polyethylene ua npuas ncauj?
Polyethylene yog lub zog kaw-cell ua npuas ncauj. Cov polymer molecules yog cross-linked, muab rigidity ntau dua, yog li hom npuas no feem ntau hu ua "cross-linked" lossis "cross-linked polyethylene" foam. Qhov sib txuas ntawm qhov sib txuas ntawm hom ua npuas dej no ua rau nws ua haujlwm hnyav heev kom rov qab mus rau nws cov qauv qub sai sai, uas muaj cov txiaj ntsig ntawm kev qhia me ntsis "bouncing" ntxiv rau muab kev poob siab. Vim nws rigidity, polyethylene tsis dav faib lub zog poob. Koj tuaj yeem xav tias nws yog "shockproof" ua npuas ncauj.
Cov npuas dej no yog ib txwm siv rau hauv cov khoom ua si uas nyias nyias (1 "mus rau 2"), yog li nws yuav tsum muaj zog tag nrho. Nws muab kev sib xyaw ua ke ntawm lub teeb yuag cushioning thiab kev tiv thaiv lub caij nplooj zeeg thaum tseem muab kev ruaj ntseg taw thaum tsaws. Cov npuas dej no feem ntau yog siv rau hauv cov ntawv thov uas ko taw lossis txhais tes nyob hauv av thiab koj xav kom tsis txhob ua rau koj pob taws lossis dab teg. Nws yog feem ntau pom nyob rau hauv cov qauv folding lev, gymnastics pem teb (xws li cov ntaub pua plag ua npuas ncauj), martial arts floors, thiab portable, slatted, cheering floors (xws li flex rolls). Nws kuj yog qee zaum siv los ua cov txheej saum toj kawg nkaus ntawm softer ua npuas ncauj los muab kev tuav pov hwm zoo dua, nrog cov txheej txheem qis dua ntawm cov npuas dej ntxiv qee qhov kev poob siab.
Polyurethane Foam yog dab tsi?
Polyurethane yog ib qho softer qhib-cell ua npuas ncauj uas tuaj nyob rau hauv sib txawv degrees ntawm durometer. Vim tias cov hlwb qhib thiab tsis sib txuas, huab cua tuaj yeem ntws los ntawm cov npuas dej zoo li dej tuaj yeem ntws los ntawm daim txhuam cev. Cov cuab yeej no ua rau cov npuas dej softer thiab zoo dua tuaj yeem nqus lub zog. Nws tsis rov qab sai li polyethylene thiab faib lub zog ntawm compression ntau dua.
Cov npuas dej no feem ntau yog siv rau hauv cov khoom uas xav tau kev tiv thaiv ntau dua, yog li nws yog tuab (4"-32" tuab) thiab softer. Nws muab cushioning ntau dua thaum koj lub cev nyob hauv av es tsis yog koj txhais taw lossis txhais tes. Cov khoom siv uas siv cov npuas dej no yog pov mats, xyaum mats, tsaws thiab stunt mats, ramp mats, thiab lwm yam khoom siv los tiv thaiv kev ntog thiab raug mob.
Puas yog polyurethane thiab polyethylene puas tau sib xyaw hauv tib yam khoom?
Yog lawm. Muaj qee cov khoom siv uas siv ob hom ua npuas ncauj ua ke. Softer polyurethane yuav siv rau lub cev, hauv qab thiab cov tub ntxhais ntawm cov khoom, thaum lub thinner, muaj zog txheej ntawm polyethylene tsuas yog ntxiv rau saum npoo. Qhov kev sib xyaw ua ke no ua rau nyias, ruaj khov sab saum toj thiab siab, mos hauv qab. Thaum qhov kev sib xyaw ua ke no muaj kev cuam tshuam xws li kev tsaws ko taw, nws muab kev nruj txaus kom lub pob taws ntawm dov. Txawm li cas los xij, tag nrho softer puag txheej compresses tib lub sijhawm, tsim kom muaj cov nyhuv cushioning. Qhov no yog qhov tshwj xeeb tshaj yog thaum koj ib txwm tsaws lossis sawv ntsug ntawm lub lev, tab sis xav kom muaj peev xwm "mos lub tshuab" thaum koj ntaus lub lev.
Puas muaj polyurethanes nrog cov ntsiab lus ILD sib txawv tau sib xyaw hauv tib cov khoom?
Yog lawm. Ntau lub mats tuab (txog mats, xyaum mats, qhov mats, tsoo / stunt mats) yuav siv kev sib xyaw ua ke ntawm siab dua thiab qis dua ILD ua npuas ncauj sib txawv. Tsis tas li ntawd, feem ntau ntau dua ILD ua npuas ncauj (nyuaj) yuav ua rau sab saum toj txheej, thaum qis ILD (softer) ua npuas ncauj yuav ua raws li hauv qab txheej. Cov txheej saum toj kawg nkaus tsis muaj zog li polyethylene ua npuas ncauj, tab sis yuav muab lub hauv paus ntau dua li yog tias tag nrho cov ntaub qhwv tau ua los ntawm cov npuas dej hauv qab.
Piv txwv li, tej zaum koj yuav pom tias hauv qab 50 feem pua ntawm koj cov lev xyaum yog 36 ILD, thaum sab saum toj 50 feem pua yog 75 ILD. Los ntawm lub vault, qhov no yuav pab kom koj ob txhais taw ruaj khov rau hauv av, tab sis yog tias koj tsaws ntawm koj nraub qaum lossis pob txha, nws yuav ua rau koj lub caij nplooj zeeg thiab tiv thaiv koj. Ntawm qhov tod tes, thaum stuntmen raug pov tawm ntawm lub qhov rais bar, lawv tsis txawm sim tsaws ntawm lawv ko taw. Lub tswv yim ntawm no yog cushion ntog thaum tag nrho lub cev tsoo lub ncoo. Yog li 24 "ntev stunt lev yuav ua tau tag nrho ntawm cov mos mos 24 ILD ua npuas ncauj ntxiv nrog cov pa cua ntxiv, thiab vim nws yog mos heev koj xav tau ntau cov tuab kom nqus tau qhov cuam tshuam.
Yuav ua li cas peb ntsuas polyurethane hardness?
Thawj qhov peb yuav tsum tau saib yog hardness, tsis yog ntom. Ob qho tib si feem ntau yuam kev xav tias yog tib yam, thiab lawv tuaj yeem cuam tshuam, thaum qhov tseeb lawv yog cov yam ntxwv sib txawv. Qhov ceev qhia peb ntau npaum li cas ib yam khoom hnyav rau ib chav tsev ntim, tab sis nws tsis tas yuav qhia tias nws khov npaum li cas. Thaum peb saib ntawm gymnastics ua npuas ncauj, peb txaus siab rau qhov hardness, uas qhia peb tias cov npuas dej zoo li cas thaum peb nqis los yog poob rau ntawm nws. Ua npuas ncauj hardness yog ntsuas los ntawm kev ntsuas qhov ntsuas hu ua Indentation Load Deformation (feem ntau hu ua ILD). Hauv kev siv gymnastics, feem ntau koj yuav pom cov polyurethanes nrog ILD tus lej ntawm 24 thiab 75. Tus lej siab dua, qhov firmer ua npuas ncauj. Tus lej qis dua, qhov softer ua npuas ncauj. Yog li ntawd, 36 ILD ua npuas ncauj yog mos heev,