Mastic BPM-3 da BPM-4. Abubuwan haɗaka
Abubuwa
Properties da kuma tabbatacce fasali na roba-bitumen mastics
Mastic, wanda aka shirya bisa tushen roba da bitumen, shafi ne mai kashi ɗaya, wanda ke da shingen da ba zai iya jurewa ba. Yana samar da ci gaba da Layer wanda, duk da canjin yanayin zafi na waje, ana kiyaye tsarin tsarin thermal barga, wanda ke rage saurin tafiyar matakai na lalata da lalata kayan ƙarfe.
Rubber-bitumen mastics suna cikin rukuni na abin da ake kira "sanyi" mastics, wanda aka yi amfani da su a cikin sassan mota bayan preheating, amma a yanayin zafi (dumi yana nufin kawai rage danko na abun da ke ciki, don sauƙi). yin aiki da shi). Bugu da kari, kowane kayan aikin yana aiwatar da takamaiman ayyuka. Roba yana ƙara elasticity na mastic da juriya ga lanƙwasa yayin daɗaɗaɗɗen bugu ko girgiza, kuma bitumen yana ba da gudummawar hydrophobicity na mastic da juriya ga mahalli masu haɗari (acids da alkalis).
Tun da duk wani tushe na bituminous ya wuce tsawon lokaci kuma ya rasa ƙarfinsa, ana ƙara mahadi na polymeric zuwa mastic, wanda ke ƙara yawan laushi. Wannan ya zama dole don amfani da jerin BPM roba-bitumen mastics duk shekara zagaye.
Halayen aiki na abubuwan da ake la'akari:
| Alamar mastic | Zazzabi mai laushi, ° C | Tsawancin filastik, mm | Dangantaka tsawo a farkon fashe, % | zafin jiki na aikace-aikace, °C |
| BPM-3 | 50 | 3 ... 5 | 60 | 10 ... 30 |
| BPM-4 | 60 | 4 ... 8 | 100 | 5 ... 30 |
Mastic BPM-3
Mastic BPM-3Lokacin da aka yi amfani da shi a saman ƙarfe na mota, abun da ke ciki yana yin ayyuka masu zuwa:
- Yana kare karfe daga lalata.
- Yana rage amo a cikin gidan.
- Yana yin kariyar injiniya na kasa daga nau'in gishiri daban-daban, dutsen da aka rushe, tsakuwa.
- Yana taimakawa rage girgiza.
Kasancewar roba mai kyau a cikin abun da ke ciki yana tabbatar da isasshen elasticity na sutura, wanda aka kiyaye har ma a ƙananan yanayin zafi (har zuwa -15 ... -20).0C).
An gabatar da abubuwan haɗin Aluminosilicate a cikin mastic BPM-3, kasancewar kasancewarsa yana kare sassan jikin waje daga nauyi mai ƙarfi. A lokaci guda, ana inganta juriya na lalacewa na inji. Sashin bituminous yana ba da gudummawa ga ci gaban da ake buƙata na sutura kuma yana rage girman yanki na wuraren kyauta.
Mastic yana da ƙonewa, don haka ana ba da shawarar yin aiki tare da shi a wuraren da ke da iska mai kyau, daga tushen bude wuta. Kafin yin amfani da mastic yana mai zafi a cikin wanka na ruwa ko a cikin dakin dumi. Abun da ke ciki yana shirye don amfani lokacin da ya kasance mai kama da ɗanko mai ɗanko na launin baki.
Mastic BPM-4
BPM-4 shine ingantacciyar dabarar mastic BPM-3. Musamman ma, akwai abubuwan da ke ƙara haɓakar elasticity na kayan aiki, wanda ke da tasiri mai kyau akan dorewa na sutura.
Bugu da ƙari, BPM-4 rubber-bitumen mastic yana da alaƙa da:
- Kasancewar man fetur mai dauke da amine, wanda ke ba da ƙarin tasirin lalatawa wanda ke daɗe na dogon lokaci.
- Ƙara elasticity na saman da aka bi da shi, wanda ke da mahimmanci ga motocin da ke aiki a kan hanyoyi marasa kyau.
- Haɓaka abokantaka na muhalli yayin amfani, tun da ba ya ƙunshi abubuwan da ke cutar da tsarin numfashi.
Sauran sigogin aiki sun dace da damar mastic BPM-3.
Samar da nau'ikan mastics na roba-bitumen BPM-3 da BPM-4 ana aiwatar da su daidai da buƙatun fasaha na GOST 30693-2000.
Mai Bita mai amfani
Yawancin sake dubawa suna nuna fa'idodi masu zuwa na amfani da waɗannan nau'ikan mastics:
- Shawarwari na yin amfani da thinners, tun a farkon yanayin (ko da bayan thermal softening) yana da wuya a yi amfani da mastics, musamman a kan saman tare da hadaddun tsari. Fetur Kalosh, kerosene, toluene ana bada shawarar a matsayin mahadi diluting. Koyaya, jimillar adadin siriri bai kamata ya wuce 15% na ainihin mastic girma ba.
- Wasu sake dubawa sun lura da gaskiyar tsufa na jiki na suturar da aka bi da su tare da BPM-3, wanda masu motoci ke fama da su ta hanyar gabatar da masu yin filastik a cikin mastic. A cikin wannan ƙarfin, zaku iya amfani da man inji mai tacewa.
- Idan aka kwatanta da BPM-3, za a iya amfani da mastic BPM-4 a cikin Layer ɗaya, amma kafin haka ana ba da shawarar a tsaftace shi sosai da kuma rage ƙasa, da kuma amfani da kayan shafa mai dauke da phosphate.
- Ba kamar wasu samfurori masu kama ba - alal misali, Kordon anticorrosive - Nizhny Novgorod mastics ba ya fashe a ƙananan yanayin yanayi.
Masu amfani kuma suna la'akari da "abokan abokantaka" na duka abubuwan haɗin gwiwar su zama sifa mai kyau, wanda ke ba da damar yin amfani da wasu nau'ikan samfuran iri ɗaya.
