Poyerekeza ndi utoto wina wapamsewu (kusungunuka kotentha, utoto wozizira),zigawo ziwiri zolembera misewuali ndi zinthu zotsatirazi:

Nthawi yowumitsa imangokhala yokhudzana ndi kutentha kozungulira, kuchuluka kwa mankhwala ochiritsira, etc., ndipo alibe chochita ndi makulidwe a filimu yophimba.Izi zimathandiza kuti zigawo ziwiri zolembera misewu zipangidwe kukhala filimu yochindikala ndi zizindikiro zina zapamsewu, monga zigawo ziwiri zozungulira mvula zonyezimira usiku, madontho, ndi zina zotero;

Zotsatira zolumikizirana pakupanga filimu yolembera zimathandizira kwambiri mphamvu zamakina za filimu yolembera, kumamatira kumsewu komanso mphamvu yolumikizira zinthu zowunikira;ena mbali ziwiri zotchingira msewu zotchingira zingagwiritsidwe ntchito pa misewu yonyowa Kuchiritsa, kotero kukhoza kuthetsa vuto la msewu cholembera utoto mu mvula.

Mwanjira iyi, zolembera zamagulu awiri zimakhala ndi zabwino zakezake poyerekeza ndi mitundu ina ya zilembo.Kenako, ndikuwonetsani zizindikiro zingapo zodziwika bwino za zigawo ziwiri ndi mawonekedwe ake.

Chizindikiro cha zigawo ziwiri za epoxy

Zolemba za epoxy nthawi zambiri zimagwiritsidwa ntchito pojambula mipanda yamitundu yosatsetsereka.Popeza utomoni wa epoxy umakhala wotsika mtengo, mtengo wa zolemba za epoxy ndi wochepa, koma kutsika kwake kwa kutentha kumakhala kosauka.Utomoni wa epoxy nthawi zambiri umayenera kuchiritsidwa pa kutentha pamwamba pa 10 ° C.Ngati ndi yotsika kwambiri, nthawi yochiritsa idzakhala yayitali kwambiri.Nthawi yochiritsa idzakhala yopitilira maola 8 pa kutentha kochepa pansi pa 10 ℃.Ili ndiye vuto lalikulu lomwe likuletsa kugwiritsa ntchito zokutira zolembera zamsewu za epoxy resin.Kachiwiri, kukalamba kwake kumakhala kocheperako ndipo kumakhala mu mamolekyu.Chomangira chonunkhira cha ether chimasweka mosavuta pansi pa kuwala kwa kuwala kwa ultraviolet, ndipo kukana kwanyengo kwakunja kwa filimu yokutira kumakhala koyipa.

Chizindikiro cha zigawo ziwiri za polyurethane

Zolemba za polyurethane zimagwiritsidwanso ntchito pamiyala yamitundu.Mapangidwe ake amafanana ndi epoxy.Sichidzakutidwa pambuyo pomanga, koma nthawi yochiritsa ndi yayitali kwambiri, nthawi zambiri imakhala yoposa maola 4-8.Zovala za polyurethane zimakhala ndi mphamvu zoyaka komanso kawopsedwe, zomwe zimayambitsa zoopsa zina zobisika ku thanzi ndi chitetezo cha ogwira ntchito yomanga.Pa nthawi yomweyo, olimba zili polyurethane zopangira ndi osiyana kwambiri chifukwa formulations osiyana, ndi ambiri zosungunulira zikuchokera pakati 3% ndi 15%, chifukwa zokutira anamaliza.Kusiyana kwamitengo pa tani ndi kupitilira ma yuan 10,000, ndipo msika ndiwosokonekera.

Chizindikiro cha zigawo ziwiri za polyurea

Chizindikiro cha polyurea ndi chinthu chotanuka chomwe chimapangidwa ndi momwe isocyanate chigawo A ndi cyano chigawo B. Amagwiritsidwa ntchito pamapando amitundu.Filimu yophimba polyurea imachiritsa mwamsanga, ndipo filimuyo ikhoza kupangidwa mu masekondi 50 kwa oyenda pansi, omwe angafupikitse kwambiri nthawi yomanga., Koma liwiro lake limakhala lothamanga kwambiri, zomwe zimapangitsa kuti pakhale zovuta zomanga.Amagwiritsidwa ntchito kwambiri kupopera mbewu mankhwalawa ndipo amafunikira luso lapamwamba la kupopera mbewu mankhwalawa.Choyipa chodziwikiratu ndikuti ndi okwera mtengo komanso okwera mtengo.

Chizindikiro cha zigawo ziwiri za MMA

Kulemba kwa zigawo ziwiri za MMA sikungangojambula misewu yamitundu, komanso mizere yachikasu ndi yoyera.Iwo ali osiyanasiyana ntchito.Ili ndi zabwino izi:

1. Mlingo wowumitsa ndiwofulumira kwambiri.Kawirikawiri nthawi yochiritsa ndi 3 ~ 10min, ndipo msewu udzabwezeretsedwa kwa magalimoto mkati mwa nthawi yochepa yomanga.Ngakhale m'malo otentha kwambiri, kuchuluka kwa mankhwala ochiritsa kumatha kuonjezedwa moyenerera molingana ndi mtundu wa utomoni, ndipo kuchiritsa kumatha kukwaniritsidwa pa 5 ° C kwa 15 ~ 30min.

2. Kuchita bwino kwambiri.

① Kusinthasintha kwabwino.Kusinthasintha kwapadera kwa methyl methacrylate kumatha kupewa kuchitika kwa filimu yolemba chizindikiro.

②Kumamatira kwabwino kwambiri.Ma polima otsika kwambiri omwe amagwira ntchito polima amakhala ndi kuthekera kwabwino kwa ma capillaries otsalira panjira, ndipo amatha kuthana ndi vuto loti utoto wina wolembera siwophatikizana ndi mipanda ya konkire ya simenti.

③Kukana kwambiri abrasion.The polymerization anachita filimu kupanga ndondomeko zimapanga maukonde maselo dongosolo, amene mwamphamvu Chili zigawo zosiyanasiyana mu ❖ kuyanika mu wandiweyani lonse.

④Kukana kwanyengo kwabwino.Kulembako sikutulutsa kutentha kwapang'onopang'ono kapena kufewetsa kwapamwamba kwambiri, ndipo palibe ukalamba pamene ukugwiritsidwa ntchito;zigawo ziwiri kupanga latsopano maukonde molekyulu pambuyo polymerization, amene ndi lalikulu molekyulu kulemera polima, ndi molekyulu latsopano alibe yogwira zomangira maselo.

3. Makhalidwe apamwamba oteteza chilengedwe.

Kusungunuka kwa zosungunulira kudzawononga ozoni wa mumlengalenga ndikuyambitsa mavuto aakulu a chilengedwe.Poyerekeza ndi chigawo chimodzi cha penti yolembera msewu, penti ya acrylic ya zigawo ziwiri imachiritsidwa ndi polymerization yamankhwala, osati kuphulika kwa thupi ndi kuyanika.Pali pafupifupi palibe zosungunulira mu dongosolo, kokha pang'ono kwambiri monomer volatilization kumachitika pomanga (kuyambitsa, ❖ kuyanika), ndi zosungunulira utsi ndi otsika kwambiri kuposa zosungunulira-based cholembera utoto utoto.