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硅烷改性聚氨酯密封膠熱加速養(yǎng)護(hù)試件的各項性能指標(biāo)
- 發(fā)布時間 : 2026-8-10 16:00:37
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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.
硅烷改性聚氨酯密封膠熱加速養(yǎng)護(hù)試件的各項性能指標(biāo)
(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 : 2026-8-10 16:00:37
- Views:
Information
本研究以硅烷改性聚氨酯密封膠與硅烷改性聚氨酯密封膠熱加速養(yǎng)護(hù)試件的各項性能指標(biāo)作為模型輸人特征，以標(biāo)準(zhǔn)養(yǎng)護(hù)條件下測得的力學(xué)性能數(shù)據(jù)作為輸出特征，構(gòu)建了多種機(jī)器學(xué)習(xí)預(yù)測模型。通過系統(tǒng)對比預(yù)測值與實際檢測值，并結(jié)合誤差分析，對所建模型的可靠性與準(zhǔn)確性進(jìn)行了綜合驗證。
用異丙醇清潔玻璃基材、鋁片基材，并干燥，按照GB 16776-2025《建筑用硅烷改性聚氨酯密封膠》的方法制得H型試片，且在1d后將隔離墊塊與硅烷改性聚氨酯密封膠分離。硅烷改性聚氨酯密封膠和硅烷改性聚氨酯密封膠各制作2組試片，3個試片為一組，以備后續(xù)測試。
(1)熱老化加速養(yǎng)護(hù)性能:取一組硅烷改性聚氨酯密封膠試樣，置于溫度為(55士2) 0C的鼓風(fēng)干燥箱中進(jìn)行熱老化加速養(yǎng)護(hù)，養(yǎng)護(hù)周期為3 d(以下簡稱“加速養(yǎng)護(hù)”)。
(2)力學(xué)性能:另一組置于標(biāo)準(zhǔn)條件下(以下簡稱“常溫養(yǎng)護(hù)”)，硅烷改性聚氨酯密封膠養(yǎng)護(hù)21產(chǎn)，硅烷改性聚氨酯密封膠養(yǎng)護(hù)28d。按照GB/T 13477.8-2017《建筑密封材料試驗方法第8部分:拉伸粘接性的測定》的方法測試力學(xué)性能。養(yǎng)護(hù)結(jié)束后，將試片安裝于材料試驗機(jī)上，設(shè)定加載方向為拉伸，變形傳感模式為位移控制，試樣類型選取板材，以5.5 mm/min的拉伸速率將試片拉伸至破壞，記錄硅烷改性聚氨酯密封膠的拉伸強(qiáng)度、最大強(qiáng)度伸長率、斷裂伸長率及拉伸100%模量(以下簡稱“模量”)。
本文將加速養(yǎng)護(hù)后硅烷改性聚氨酯密封膠的拉伸強(qiáng)度、最大強(qiáng)度伸長率、斷裂伸長率和模量作為輸人特征，將常溫養(yǎng)護(hù)得到的耐候膠模量、結(jié)構(gòu)膠拉伸強(qiáng)度和結(jié)構(gòu)膠最大強(qiáng)度伸長率分別作為輸出特征。數(shù)據(jù)集采用的是2024年度日常生產(chǎn)的耐候膠252批次，以及結(jié)構(gòu)膠1 521批次的力學(xué)性能數(shù)據(jù)進(jìn)行分析，能反映出日常生產(chǎn)的平均水平。采用算法包括線性回歸(LR、支持向量回歸(SoR}、隨機(jī)森林(RF)以及極限梯度提升(XGBoost)模型，使用決定系數(shù)(尸)以及均方誤差(MSE對模型的預(yù)測精度作為判斷。http://www.mychangxin.com/
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