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自制高強度MS密封膠性能的影響因素
- 發(fā)布時間 : 2025-1-19 13:03:22
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(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.
自制高強度MS密封膠性能的影響因素
(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(fā)布時間 : 2025-1-19 13:03:22
- Views:
混合,溫度升高到12090,并進行真空除水4h,降低溫度到4090,然后按照順序添加功能性助0.31%,除濕劑1.21%,催化劑0.81 %,粘接劑1.21%,均勻混合,然后進行真空脫泡,獲得高強度MS密封膠。剪切強度,利用萬能電子拉力試驗機檢測;拉伸強度與斷裂伸長率利用萬能電子拉力試驗機檢測;
硬度利用邵爾A硬度計檢測;貯存穩(wěn)定性檢測,把密封包裝產(chǎn)品放置到7090恒溫箱內(nèi),存放7d,然后轉(zhuǎn)換到室溫狀態(tài),測試性能變化;壓流赫度利用壓流豁度計檢測;粘接性檢測,間隔1d詳細觀察粘接情況,利用900拉扯膠片,直到膠層內(nèi)部出現(xiàn)100%內(nèi)聚破壞,詳細記錄粘接形成耗費的具體時間。
預(yù)MS密封膠性能的影響在MS密封膠中,預(yù)聚物屬于主體成分,利用結(jié)構(gòu)不同的預(yù)聚物制備的產(chǎn)品,其力學(xué)性能存在顯著偏差。利用3種不同聚合物獲得相應(yīng)密封膠,其中MS2的勃度最低,MS3的豁度最高。具體力學(xué)性能如表1所示。
由表可以看出,赫度增加,斷裂伸長率也會隨之增加,這是由于勃度大的預(yù)聚物,其分子質(zhì)量也較大,相同質(zhì)量預(yù)聚物可供交聯(lián)的官能團相對偏少,交聯(lián)度比較低,柔韌性良好,這樣一來,斷裂伸長率就會越高。而隨著拉伸強度增加,剪切強度也逐漸增加,這代表MS密封膠的粘接性受界面附著力與聚合物本體強度的雙重影響。其中,預(yù)聚物的側(cè)鏈結(jié)構(gòu)也與膠的強度密切相關(guān),分子間作用力越大,內(nèi)聚力越大,強度越高,所以,MS3的強度與伸長率相對較高,將其作為基料并配合助劑,能夠獲得性能更好的高強度MS密封膠氣。http://www.m.n5224.cn/
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