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硅烷改性聚氨酯密封膠注膠環(huán)境的原因及解決方案
- 發(fā)布時(shí)間 : 2025-5-13 10:38:15
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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注膠環(huán)境的原因及解決方案
(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(shí)間 : 2025-5-13 10:38:15
- Views:
材料的原因及解決方案
由于實(shí)際施工過程中使用的材料(鋁材、玻璃、硅烷改性聚氨酯密封膠、清洗劑、底涂液等)批次很多,需要注意不同批次間可能存在差異。同時(shí),施工現(xiàn)場(chǎng)的環(huán)境與進(jìn)行粘接性試驗(yàn)的實(shí)驗(yàn)室環(huán)境也不盡相同。因此,在施工過程中,需要對(duì)每批次進(jìn)廠的材料進(jìn)行現(xiàn)場(chǎng)粘接性試驗(yàn)。
另外,也需要注意與硅烷改性聚氨酯密封膠接觸的輔材,例如橡膠條、雙面膠貼、橡膠墊片等可能對(duì)粘接產(chǎn)生的影響。某些輔材可能含有過量的或者與硅烷改性聚氨酯密封膠不相容的增塑劑,可能滲入硅烷改性聚氨酯密封膠并導(dǎo)致硅烷改性聚氨酯密封膠變色、軟化以及脫粘等。因此,輔材也需要提前與硅烷改性聚氨酯密封膠進(jìn)行粘接性和相容性測(cè)試。
硅烷改性聚氨酯密封膠注膠環(huán)境、養(yǎng)護(hù)環(huán)境的原因及解決方案
根據(jù)《玻璃幕墻工程技術(shù)規(guī)范》中第9章的規(guī)定,硅烷改性聚氨酯密封膠的硅烷改性聚氨酯密封膠注膠環(huán)境溫度、濕度條件應(yīng)符合結(jié)構(gòu)硅烷改性聚氨酯密封膠產(chǎn)品的規(guī)定。一般硅烷改性聚氨酯密封膠產(chǎn)品使用的環(huán)境要求為:溫度10 ℃-40 ℃,相對(duì)濕度40%-80%的清潔環(huán)境,下雨、下雪時(shí)不能施工。
如不在硅烷改性聚氨酯密封膠產(chǎn)品規(guī)定的施工環(huán)境下施工,則可能發(fā)生粘接問題。例如溫度過低時(shí),硅烷改性聚氨酯密封膠與基材表面潤(rùn)濕性降低,影響硅烷改性聚氨酯密封膠與基材的粘結(jié)性,如圖所示。
因此在實(shí)際施工時(shí),應(yīng)確保施工環(huán)境滿足硅烷改性聚氨酯密封膠品牌的要求。北方的冬季應(yīng)有采暖,南方的夏季應(yīng)有降溫措施,保證施工溫度在硅烷改性聚氨酯密封膠廠家要求的范圍之內(nèi)。如用戶有特殊情況,需要在較低溫度環(huán)境下施工(如環(huán)境溫度稍低于10 ℃),建議在使用前先進(jìn)行小面積打膠試驗(yàn),并進(jìn)行剝離粘結(jié)性試驗(yàn),確認(rèn)硅烷改性聚氨酯密封膠固化、粘結(jié)良好,并視情況適當(dāng)延長(zhǎng)養(yǎng)護(hù)時(shí)間。http://www.www.sunsage.net/
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