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      添加硅樹脂微球時攪拌條件對MS密封膠性能的影響

      • 發布時間 : 2024-5-8 18:24:05
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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.

      添加硅樹脂微球時攪拌條件對MS密封膠性能的影響

      (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 : 2024-5-8 18:24:05
      • Views:
      Information

             固定硅樹脂微球用量為0. 5 %,在硅樹脂與脫水的基料混合均勻后將其加人,研究了攪拌條件對MS密封膠性能的影響,結果見表5}由表5可見,轉速加快和攪拌時間延長,可使MS密封膠外觀顆粒感減弱,但也無法有效降低MS密封膠的密度。原因是硅樹脂微球的結構為空心的小球狀物,在一定外力作用下會使其結構破壞,從而失去了使膠體體積膨脹的作用。所以較為合適的轉速范圍為<600 r/min,加人硅樹脂微球后總攪拌時間為30一60 min。

             硅樹脂微球能有效降低MS密封膠的密度且對其性能影響不大。在制膠過程中,添加后需要在一定時間內以較低轉速完成分散。當硅樹脂微球的質量分數為0. 5%時,MS密封膠密度降低了8. 2% ,且力學性能、硫化性能均無明顯變化,貯存穩定性良好。

             采用熱脫附一氣相色譜/質譜聯用儀(TD - GCMS)測定了MS密封膠中二甲基環硅氧烷的含量。通過譜庫對照和特征離子分析,確認了各組分在譜圖中對應的峰;并以十甲基環五硅氧烷(Ds)為標準曲線,建立了用于測定環硅氧烷含量的半定量法;考察了脫附管解析時間、解析溫度和解析流量對吹掃捕集的影響;最后測試了在80, 100和120℃時2種MS密封膠中Ds }Di。的含量。該方法具有操作簡單、分析周期短、經濟適用、覆蓋環硅氧烷范圍廣等優點。

             目前,環硅氧烷的持久性污染問題正在引起人們的關注0 2018年1月歐盟關于化學品注冊、評估、許可和限制的法規(REACH)正式對化妝品中八甲基環四硅氧烷(Da)和十甲基環五硅氧烷(D5)限值做出了規定。而MS密封膠行業使用的基礎原料是107硅橡膠,人們對該行業的關注將是大勢所趨。因此,在MS密封膠行業中建立一種簡單、快速、經濟的方法用于分析有機硅MS密封膠中微量的環硅氧烷非常有必要。http://m.inaodoi.com/

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