MS密封膠的硬度拉斷伸長(zhǎng)率剝離強(qiáng)度和力學(xué)性能測(cè)試

發(fā)布時(shí)間 : 2026-7-15 12:04:05
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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.

MS密封膠的硬度拉斷伸長(zhǎng)率剝離強(qiáng)度和力學(xué)性能測(cè)試

發(fā)布時(shí)間 : 2026-7-15 12:04:05
Views:

Information

常溫力學(xué)性能測(cè)試依據(jù)GB/T 531.1-2008((硫化橡膠或熱塑性橡膠壓人硬度試驗(yàn)方法》，GB/T528-2009《硫化橡膠或熱塑性橡膠拉伸應(yīng)力應(yīng)變性能的測(cè)定》，HB5249-1993《室溫硫化MS密封膠180。剝離強(qiáng)度試驗(yàn)方法》，分別取用120號(hào)汽油與壬烷作為溶劑，按照相同組分配比，制備兩組HM301刷涂型MS密封膠MS密封膠:MS密封膠①刷涂型HM301(120號(hào)汽油溶劑)、MS密封膠②刷涂型HM301(壬烷溶劑)。對(duì)兩組MS密封膠的硬度、拉斷伸長(zhǎng)率、剝離強(qiáng)度和拉伸強(qiáng)度[4]進(jìn)行對(duì)比測(cè)試，測(cè)試結(jié)果見(jiàn)表。其中，硬度、拉(扯)斷伸長(zhǎng)率與拉伸強(qiáng)度兩組MS密封膠幾乎完全一致，且滿足Q/6S 1688-2013 ((HM301室溫硫化耐高溫有機(jī)硅MS密封膠規(guī)范》。而MS密封膠①的剝離強(qiáng)度為4.SkN/m，MS密封膠②的剝離強(qiáng)度為3.6kN/m，均大于企標(biāo)規(guī)范的1.SkN/m，符合工藝要求。結(jié)合宏觀形貌分析，MS密封膠②(壬烷溶劑)剝離強(qiáng)度較低，原因?yàn)槿赏榈膿]發(fā)速率對(duì)比120號(hào)汽油較慢，HM301MS密封膠硫化過(guò)程中，在MS密封膠內(nèi)部形成微量間隙，從而降低了剝離強(qiáng)度。這與“脂肪烴分子碳原子上升，閃點(diǎn)相應(yīng)上升，但揮發(fā)性相應(yīng)下降”的原理是相適應(yīng)的。熱空氣老化性能測(cè)試按HB 5247-1993《室溫硫化密封劑熱空氣加速老化試驗(yàn)方法》，分別取用120號(hào)汽油與壬烷作為溶劑，按照相同組分配比，制備兩組HM301刷涂型MS密封膠MS密封膠:①刷涂型HM301(120"汽油溶劑)、②刷涂型HM301(壬烷溶劑)。經(jīng)(250士5)℃/100h老化對(duì)兩組MS密封膠的剝離強(qiáng)度進(jìn)行對(duì)比測(cè)試，測(cè)試結(jié)果見(jiàn)表。http://www.mychangxin.com/

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