Uruhu rwa PU ni iki?

Uruhu rwa PU rwitwa uruhu rwa polyurethane, ari rwo ruhu rw’ubukorikori rukozwe mu bikoresho bya polyurethane. Uruhu rwa Pu ni uruhu rusanzwe, rukoreshwa cyane mu bicuruzwa bitandukanye by’inganda, nk’imyenda, inkweto, ibikoresho byo mu nzu, ibikoresho byo mu modoka, ibipfunyika n’izindi nganda.

Bityo rero, uruhu rwa pu rufite umwanya ukomeye cyane ku isoko ry'uruhu.

Uhereye ku buryo bwo gukora no kurengera ibidukikije, uruhu rwa pu rugabanyijemo ubwoko bubiri bw'uruhu rwa pu rusubiwemo n'uruhu rwa pu rusanzwe.

Ni irihe tandukaniro riri hagati y'ubwoko bubiri bw'uruhu?

Reka tubanze turebe itandukaniro riri mu mikorere yabyo.

Uburyo gakondo bwo gukora uruhu rwa pu:

1. Intambwe ya mbere mu gukora uruhu rwa pu ni ugukora polyurethane, maze isocyanate (cyangwa polyol) na polyether, polyester n'ibindi bikoresho fatizo bikorerwamo polyurethane resin binyuze mu buryo bwa chemical reaction.

2. Gusiga irangi ku gice cyo hasi, ukoresheje polyurethane resin, nk'ubuso bw'uruhu rwa pu, igice cyo hasi gishobora gutoranywamo imyenda itandukanye, nk'ipamba, umwenda wa polyester, nibindi, cyangwa ibindi bikoresho by'ubukorikori.

3. Gutunganya no gutunganya, substrate ipfundikiye iratunganywa kandi igatunganywa, nko gushushanya, gucapa, gusiga irangi n'izindi nzira, kugira ngo haboneke imiterere, ibara n'ingaruka z'ubuso bikenewe. Izi ntambwe zo gutunganya zishobora gutuma uruhu rwa PU rusa n'uruhu nyarwo, cyangwa rugagira ingaruka ku gishushanyo cyihariye.

4. Nyuma yo gutunganya: Nyuma yo kurangiza gutunganya, uruhu rwa PU rushobora gukenera kunyura mu ntambwe zimwe na zimwe nyuma yo gutunganya, nko kurinda irangi, gutunganya amazi, nibindi, kugira ngo rwongere kuramba no imiterere yarwo.

5. Kugenzura no gupima ubuziranenge: Mu byiciro byose byo gukora, hazakorwa igenzura n'igenzura ry'ubuziranenge kugira ngo harebwe ko uruhu rwa PU rwujuje ibisabwa mu miterere n'ibisabwa.

Uburyo bwo gukora uruhu rwa pu rusubiwemo:

1. Gukusanya no kongera gukoresha imyanda ya polyurethane, nk'ibikomoka ku ruhu rwa pu, imyanda ikomoka ku musaruro, nyuma yo gutondekanya no gusukura imyanda n'umwanda ku buso, hanyuma ugakora uburyo bwo kumisha;

2. Shyira ibikoresho bya polyurethane bisukuye mo uduce duto cyangwa ifu;

3. Koresha icyuma kivanga uduce twa polyurethane cyangwa ifu hamwe na polyurethane prepolymers, fillers, plasticizers, antioxydants, nibindi, hanyuma ubishyire mu bikoresho bishyushya kugira ngo bikore polyurethane matrix nshya. Hanyuma polyurethane matrix ikorwamo filime cyangwa imiterere runaka binyuze mu gushushanya, gusiga cyangwa gushushanya.

4. Ibikoresho byakozwe birashyuha, bigakonjeshwa kandi bigakira kugira ngo habeho imiterere ifatika n'ubudahangarwa bw'imiti.

5. Uruhu rwa pu rwasubiwemo, rwasizweho irangi, rwasizweho irangi, rwasizwe irangi n'ubundi buryo bwo gutunganya ubuso kugira ngo rubone isura n'imiterere byifuzwa;

6. Gukora igenzura ry’ubuziranenge kugira ngo byuzuze ibisabwa n’ibisabwa. Hanyuma ukurikije ibyo abakiriya bakeneye, katamo ingano n’imiterere bitandukanye by’uruhu rwarangiye;

Binyuze mu gikorwa cyo gukora, birumvikana ko ugereranyije n'uruhu gakondo rwa pu, uruhu rwa pu rusubiwemo rwita cyane ku kurengera ibidukikije no kongera gukoresha umutungo, bigagabanya ihumana ry'ibidukikije. Dufite ibyangombwa bya GRS ku ruhu rwa pu na pvc, byubahiriza igitekerezo cy'iterambere rirambye no kurengera ibidukikije, ndetse n'ibikorwa byo gukora uruhu.