電連接器用硅烷改性聚氨酯密封膠的可靠度函數

發布時間 : 2024-8-12 10:58:36
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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.

電連接器用硅烷改性聚氨酯密封膠的可靠度函數

(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 : 2024-8-12 10:58:36
Views:

可靠性統計模型在長期貯存過程中，電連接器硅烷改性聚氨酯密封膠的性能會逐漸退化，其氣體泄漏率值將逐漸增大。當泄漏率達到失效闌值Q，。時電連接器會發生密封失效，此時對應的壽命l的數學表達式如下:由于氣體擴散隨機系數Y和接觸周長1,服從正態分布，故l時刻下硅烷改性聚氨酯密封膠的氣體泄漏率Q，服從正態分布，分布函數為式中，X為隨機變量;FQ，(X)表示Qr毛X的概率，為Q，的均值;6，為Q，的標準差。在貯存時間l時刻下，電連接器用硅烷改性聚氨酯密封膠的可靠度函數為溫濕度綜合應力加速試驗方案的確定試驗應力水平和截尾時間根據聚氨醋膠材質特性，硅烷改性聚氨酯密封膠的最高耐受溫度為85℃，為保證硅烷改性聚氨酯密封膠在加速試驗過程中的失效機理不變，將試驗的最高溫度應力水平設定為75℃，同時為保證試驗具有一定的加速性，其余溫度設置為55℃和65℃。結合試驗設備的可行域，本文將濕度應力設置為960oRH840oRH和720oRH。根據國家標準UB/T2689.1-1981中的有關要求z，為保證試驗評估精度，每個應力水平下投放12個樣品。考慮到統計精度和模型驗證的要求，基于中心復合設計法可以挖掘出因素與響應值之間的關系并且具有延順性的特點za，選取其中5組溫濕度應力水平組合開展試驗。由于硅烷改性聚氨酯密封膠在不同應力水平組合下的退化速率不同，為了獲取盡可能多的試驗數據，確定(55℃,720oRH)(65℃,960oRH)(65℃,840oRH)水平組截尾時間為1500h,(75℃,960oRH)(75℃,720RH)水平組截尾時間為1000h，測試間隔均為336h。具體試驗方案如表1所示。http://www.qiquanonline.com/

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