Izici zekhwalithi ephezulu yerabha yegwebu kusofa, izinhlobo zayo nemikhiqizo

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Imboni yefenisha yesimanje isebenzisa izinhlobo eziningi zezinto zokusetshenziswa, ezemvelo nezokufakelwa, njengokugcwalisa osofa. Kepha kaningi kusetshenziswa igwebu le-polyurethane, elaziwa kangcono kubathengi abahlukahlukene njenge-raber foam. Le nto ibilokhu ithandwa kusukela endulo, eminyakeni eyedlule ikhona izinguquko ezinkulu futhi yathuthukiswa ngokuphelele. Kwesinye isikhathi abakhiqizi bahlanganisa i-foam yerabha kusofa nezinye izinto ezifana nayo - i-padding polyester, i-latex, izwakala, kepha kaningi basebenzisa inhlanganisela yokugcwalisa okukodwa kwamazinga ahlukahlukene wobuningi. Yiziphi izinzuzo nezinkinga i-PPU enazo, ukuthi zithinta kanjani ukusebenza kwefenisha, kufanele kuqondwe yiwo wonke umsebenzisi ofuna usofa ophelele.

Izici zekhwalithi ephezulu

Ukuze ifenisha ephakanyisiwe ingalahli izakhiwo zayo zokuqala ngokuhamba kwesikhathi, kufanele unake izici zokugcwalisa lapho uthenga. Okokuqala ubukhulu benjoloba yokufaka usofa kufanele ibe nenkomba yama-22 kg / m3. Kulokhu, impilo yokusebenza kosofa izoba yinde, ifenisha izokwazi ukumelana nemithwalo eyengeziwe. Inkomba yesibili ebalulekile yekhwalithi ukushuba kwenjoloba yegwebu yokunamathisela usofa, kufanele okungenani ibe ngu-4 cm.

Abenzi abangawanaki amazinga, ikhwalithi yefenisha isezingeni eliphansi, ngakho-ke impilo yenkonzo yayo incishisiwe kakhulu.

Ifenisha ebizayo ebunjiwe yenziwa ngokugcwalisa amagwebu okunwebeka kakhulu. Lolu hlobo lwephoyinti le-polyurethane lunesakhiwo se-multistage "puff pastry". Enguqulweni yakudala, iqukethe ishidi eliphezulu elincanyana lobuningi obuphansi noqweqwe olungezansi, okunwebeka kakhulu. Ideski ephezulu inikeza izinga eliphakeme lokunethezeka, kanti idokodo elingezansi linikeza ukusekelwa okuphephile. Yize iqiniso lokuthi impahla enjalo ibiza kakhulu, iyadingeka ekukhiqizeni ifenisha, ngoba iqinisekisa imikhiqizo esezingeni eliphakeme.

Khonamanjalo, ukunethezeka kombhede akuxhomekile ngaso sonke isikhathi ebunzimeni baso noma ekuthambekeni kwaso. Umphumela omuhle kakhulu wamathambo unikezwa lapho amashidi amagwebu eqiniswa ngokulingene futhi enwebeka. Ngakho-ke, lapho uthenga ifenisha ephakanyisiwe, kufanele unake inkomba yenduduzo. Kukhona ukuthambekela kwamamaki ajwayelekile okuqina okuphezulu okufanele kushintshwe ngama-analogs anezici ezithuthukisiwe. Izakhiwo ze-Orthopedic zine-foam yerabha yosofa egumbini lokuphumula elinabantu okungenani abangama-30 kg / m3. Ngemuva, ukugcwaliswa okungama-25-30 kg / m3 kusetshenziswa kakhulu. Lokhu kuminyana kunomkhawulo wokulayisha ongu-60-80 kg. Ngamanani aphezulu, ayikho imikhawulo kwingcindezi eyenziwe.

Ukuze uthole induduzo eyengeziwe, okokusebenza kuhlanganiswe namashidi we-HS athambile futhi athambile.

Izinhlobonhlobo

Ishidi lerabha le-foam kanye ne-roll kuyahluka ngobumnene nokuqina. Imikhiqizo yile:

I-soft - lolu hlobo lokugcwalisa lungasetshenziswa kufenisha kuphela ngokuhlanganiswa nesisekelo se-foam esinyene. Yigwebu eliguquguqukayo kakhulu le-polyurethane (PPU), elinikeza induduzo eyengeziwe emikhiqizweni eqediwe. Kepha kufanele kukhunjulwe ukuthi ngokusetshenziswa okuzimele kwento, umthwalo owenziwe awukwazi ukweqa ama-60 kg.
Okuqinile - okuqinile, okwazi ukumelana nemithwalo esindayo efinyelela ku-100 kg.
Ubulukhuni obukhulisiwe - ukuqina okuphezulu kwe-polyurethane foam kungamelana nesisindo esingaphezu kwe-100 kg.
Ukunwebeka ngokunethezeka okwandayo - injoloba yegwebu ilungele kangcono ifenisha ephakanyisiwe eyenzelwe ukulala. Ungaphumula kahle kakhulu endaweni enjalo.
Ukunwebeka ngomphumela wamathambo - imikhiqizo ibonakaliswa ngezici zokuphulukisa, njengoba zinciphisa umthwalo kuzo zonke izingxenye zomzimba.

Irabha eligwebu elinomphumela wamathambo "lungisa" kumuntu ngamunye ngamunye, into esemqoka ukukhetha okokusebenza kwesigaba sesisindo somthengi.

Kunzima

Ithambile

Imikhiqizo yamafenisha efenisha

Ukukhiqizwa kwesimanje kusebenzisa amabanga we-PPU alandelayo:

I-ST yinto ejwayelekile eluhlaza engaqukethe i-polymer efana ne-polyol (ama-polyesters). Ukuqina kwemikhiqizo kutholakala ngokukhetha isilinganiso sezingxenye zokwakheka okuyinhloko. Umphumela uba amashidi ahlukile ngezici. Ngokuyisisekelo, okungenani izinhlobo ezimbili zama-polyols ziyasetshenziswa.
EL - ukuqina okwandisiwe.
I-HL - kanzima, eyakhiwe izinhlobo ezahlukene zama-polyols.
HS - ithambile futhi ithambile kakhulu. Ukukhiqizwa kufaka i-polyester ekhethekile esikhundleni se-ST noma ngaphezu kwayo.
HR - kuyaqina okuphezulu. Ukwakheka kuqukethe kuphela ama-polyols ezinhlanganisweni ezi-2 noma ezi-3.
Okukhethekile - hhayi ngaphansi komlilo, yi-viscoelastic.

Ukwakhiwa komkhiqizo wokuqala kufaka i-melamine powder ekhethekile, ama-PHD polyols avela eBayer, ama-retardants alangabi ngendlela yesithasiselo. Ukumelana nomlilo kunikezwa yi-melamine, ngesikhathi esifanayo kuthinta kabi izakhiwo zefenisha yefenisha. Amabanga we-Viscoelastic aqukethe ama-polyesters nama-isocyanate.

Izinhlobo ezivame kakhulu zokugcwalisa ifenisha yilezi:

I-HS2520 - ukuqiniswa kwe-monolithic kusetshenziswa ngemuva kosofa ngomthwalo wama-80 kg;
HS3030 - isisindo esiphezulu se-100 kg;
I-HS3530 iyirabha yegwebu engcono kakhulu yefenisha ephakanyisiwe, izihlalo zangemuva ezinomthwalo wamakhilogremu ayi-100 zenziwe ngayo, nezihlalo - ama-80 kg.

Igwebu le-foam limakwa ngokuya ngezinkomba ezi-3: uhlobo, ukuminyana nokuqina... Isibonelo, ibanga le-EL2540 lishidi eliqinile, ubukhulu balo obungu-25 kg / m3, ukuqina kuze kufike ku-3.2 kPa.

U-EL

Okukhethekile

HS3030

HS3530

HS2520

Izindlela zokuzikhethela

Ukukhetha irabha yegwebu yekhwalithi ephezulu, kubalulekile ukunaka amapharamitha alandelayo:

Ubuningi. Ithinta ngqo ubude besikhathi sokusebenza. Isikhombi sathola elinye igama - "ukuqina okubonakalayo", ngoba ukwakheka kwamangqamuzana eshidi kuhlinzeka ngobukhona bezinhlayiya zomoya. Phakathi kwezinye izinto, ukuminyana kwegwebu lefenisha kunomthelela oqondile ekucindezelekeni okucindezelayo. Isibonelo, uma ingu-25 kg / m3, khona-ke le nkomba kufanele ibe ngu-4 kPa.
Ukuqina, okuthinta amandla okulingana kahle kusofa. Ipharamitha inqunywa kusetshenziswa ibhola elikhethekile eliwa ngokukhululeka ukusuka ebangeni. Ngokuqhubeka ikhipha isampula lokugcwalisa amagwebu, ukuqina kwesisekelo kunakho.
Ukucindezelwa kokucindezelwa - inani likhombisa izinga lokuqina kwamashidi amagwebu. Ngokusho kwe-ISO 3386 DIN 5377, leli nani lisiza ukunquma amandla (kPa) asetshenzisiwe ukucindezela ishidi ngo-40%.
Ukusonteka unomphela (ukuhlanekezelwa) - kukhombisa ikhono lokuthile kokuhlala kumapharamitha alo wangempela nokwakheka kuso sonke isikhathi sokusebenza. Isidingo esiyinhloko sefenisha yegwebu yefenisha ukuthi kumele ibe nezinga eliphansi lokuhlanekezela.
Ukuqina kunika amandla wokuqina nokuqina okuphansi.
Isici sokududuza sinquma ukuthi kumnandi kanjani ukuthinta ingaphezulu.
Isilinganiso sokusekelwa sikhombisa ikhono lokugcwalisa ukubamba ukwakheka kwalo nokusabalalisa imithwalo ekhiqiziwe.

Inkomba yobuningi benjoloba ye-foam ingahluka kungakhathalekile ukuthi yimuphi umenzi. Isibonelo, lapho amashidi esonteke kakhulu isikhathi eside ngesikhathi sokuhamba, ukucindezela okucindezelayo kuyehla kube yi-3.4-3.5 kPa.

Ukushintsha irabha legwebu kusofa kuyisevisi ebiza kakhulu, ngakho-ke kungcono ukukhokhela kuqala ifenisha esezingeni eliphakeme futhi eliqinile, ngoba, njengoba wazi, awukwazi ukonga ngokunethezeka.