MS密封膠固化劑組分的制備

發布時間 : 2022-12-7 16:53:46
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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.

MS密封膠固化劑組分的制備

(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 : 2022-12-7 16:53:46
Views:

MS密封膠聚醚多元醇在120℃下抽真空脫水2h，降溫備用。將EP 330NG和ATBC投入到三口燒瓶中升溫至60℃，滴加計量好的TDI，在氮氣條件下反應2h。60 ℃下滴加DL 1000D和0. 02 g DBTDL的混合液，然后升溫至80 0C，反應3h，抽真空除氣泡，即得到預聚體(A組分)，降溫至50℃出料密封保存。投料配比見表t。

將C9石油樹脂、cp52和ATBC按一定比例混合均勻，預配為M液;將A33溶解在去離子水中得到質量分數為2%的Cat液。固化劑組分(B組分)的配方見表20表2固化劑組分(B組分)的投料比固化劑編號M液/Cac液/黑色漿、司盤5,抗或劑1010, CV 531, Ca (01l):和超細:的用量分別為6,0. 5,0. 3,0. 3,40和15a按表2配方將各組分混合均勻，在三輥研磨機上研磨一遍出料。MS密封膠的制備A,B組分按質量比為1 :2混合均勻(配膠時的異氰酸酚指數隨A,B組分的不同而異)}A1,B1組分制備所得MS密封膠命名為A1B1下同)。在溫度為(2312) 0C，相對濕度為(5015)%的條件下固化7d后測試性能。制備啞鈴型拉伸樣條，拉伸模量、定伸粘接性能測試用“工字型”試樣，形狀如圖1所示。(a)啞鈴型樣條(h)“工字型”試樣圖1測試樣品形狀紅外光譜(FT}R)采用Bruke:公司Tensor 27型傅立葉紅外光譜儀測定;表干時間按GB /T16777-2008中第12. 2. 1條B法進行試驗;拉伸強度和斷裂伸長率按GB /T 2567-2008的方法進行試驗，采用WDW3020型微控電子萬能試驗機，啞鈴型拉伸樣條的有效拉伸長度為25 mm，寬度為4 mm厚度為2 mm，拉伸速率為200 mm/min，實驗結果為5次平行測試的平均值;拉伸模量按GB /T13477.8-2017的方法進行試驗，以60%伸長率時的強度表示，無說明時為23℃下的拉伸模量;彈性恢復率、定伸粘結性和質量損失率按GB /T 13477-2017的方法進行試驗;MS密封膠內部形貌:整齊切斷MS密封膠，用60倍放大鏡連接手機對橫截面拍照觀察。www.qiquanonline.com

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