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兩種不同配方的汽車油箱用點焊丁基防水嵌縫膠
- 發布時間 : 2024-8-17 10:40:36
- Views:
(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
兩種不同配方的汽車油箱用點焊丁基防水嵌縫膠
(Summary description)Customized SILICONE STRUCTURAL SEALANT from China manufacturer refers to the adhesive with high strength, can bear large load, aging resistance, fatigue resistance and corrosion resistance, and has stable performance within the expected life. It is suitable for bearing the bonding of strong structural parts. Non structural adhesive has low strength and poor durability. It can only be used for bonding, sealing and fixing of ordinary and temporary properties, and cannot be used for structural adhesive bonding. NEUTRAL SILICONE WETHERPROOF SEALANT from China manufacturer is a structural adhesive with waterproof function. Silicone glue refers to the adhesive based on silicone rubber. According to different functions, it can be divided into structural adhesive, potting adhesive, sealant, thermal conductive adhesive, flame retardant adhesive and so on.
- 發布時間 : 2024-8-17 10:40:36
- Views:
Information
從油箱噴塑固化工藝條件出發，以環氧樹脂(EP)和小分子聚酸胺為主要原料，制備了兩種不同配方的汽車油箱用點焊丁基防水嵌縫膠。測試了點焊膠在9�！捌秃�0#柴油中的耐油性和粘接強度，并對三種不同連接接頭(膠接、點焊、膠焊)的粘接強度進行了對比和分析。結果表明:點焊膠的固化工藝與汽車鍍鋅板類油箱表面漆層的固化工藝相同，故不必增加點焊膠的固化設備和工序;兩種點焊膠具有較好的粘接能，其T型剝離強度分別為89.0 kN/m和92.0 kN/m，拉伸剪切強度分別為13.3 MPa和12.9 MPa ;兩種點焊膠在90"汽油和0#柴油中浸泡360 d后，試樣的粘接強度降幅不明顯，說明其具有一定程度的耐油性;將兩種點焊膠用于汽車油箱的密封中，既具有良好的粘接密封性能，又解決了鍍鋅板類油箱滲漏油等問題。
在汽車工業中，丁基防水嵌縫膠被廣泛用于汽車擋風玻璃、汽車油箱以及汽車的整體密封等場合，起到了良好的防塵、減震和密封等作用。材料的連接方式主要有鉚接、膠接和焊接三種，采用合連接(如鉚接/膠接、焊接/膠接等)法可賦予材料更好的綜合性能。因此，在使用環境較苛刻的情況下，通常會采取組合連接法對材料進行連接。隨著汽車油箱用材料的更新換代(由鍍鋅鋼板替代鍍錫鋼板)，傳統的單一點焊工藝具有諸多弊病(如焊接工藝不佳、長期使用后會出現油箱滲漏油等現象)，故采用膠焊(焊接/膠接組合連接)法有望解決此類問題。通常，油箱鍍鋅板經焊接后，其外表面采用噴塑法涂敷塑料涂層;該塑料涂層屬于高溫固化型樹脂，其固化溫度為170180 0C。目前，國內的點焊膠基本屬于中低溫固化型，在高溫條件下兩次固化會導致點焊膠變脆或老化，致使油箱密封失效(即出現滲漏油現象)。http://www.inaodoi.com/
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