硅烷改性聚氨酯密封膠的密封技術研究
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MA的協同阻燃效應對于丁基防水嵌縫膠阻燃性能和力學性能的影響
- 發布時間 : 2024-8-19 11:56:09
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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.
MA的協同阻燃效應對于丁基防水嵌縫膠阻燃性能和力學性能的影響
(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 : 2024-8-19 11:56:09
- Views:
Information
采用溶液改性法對AI(OH)3粒子進行表面修飾，將改性劑化學包覆在粒子表面，從而改善AI舊日)3粒子的分散性;然后與三聚氰胺(MA)復配，降低總阻燃劑添加量，探索兩種阻燃劑在丁基防水嵌縫膠中的協同阻燃作用。研究了表面改性對AI(OH)3結構性能的影響，以及AI舊日)3與MA的協同阻燃效應對于丁基防水嵌縫膠阻燃性能和力學性能的影響。結果表明，進行表面改性以后，AI舊日)3粒子與丁基防水嵌縫膠的相容性有一定程度改善;與MA復配以后具備協同阻燃作用，在丁基防水嵌縫膠中總添加量小幅下降仍然能夠維持V- 0的阻燃級別，同時伸長率有較大提升。
氫氧化鋁[[AI)3]作為一種安全又環保的新型阻燃劑，添加一定量時方能發揮阻燃作用，但因其表面含有較高親水性和極性，在聚合物材料基體中的分散度和相容性不佳(易產生聚集)，從而導致制品的原有功能下降甚至失效，嚴重限制了其作為阻燃劑的應用范圍。為了改善氫氧化鋁粒子在聚合物基體材料中的親和性，需要對其進行超細化或表面改性，常用的有3種方法:共混/物理涂覆法，表面改性法和微膠囊化法。本文選用表面改性的方法，直接采用硅烷偶聯劑與氫氧化鋁粒子表面的輕基反應，改善氫氧化鋁粒子在丁基防水嵌縫膠體系中的分散性。
當前，協同阻燃技術應用正日益廣泛。協同阻燃是指由兩種或兩種以上阻燃劑構成的阻燃體系，其阻燃作用優于各組分阻燃劑阻燃作用之和。具體來說，是將具有不同阻燃機理的阻燃劑，如磷系阻燃劑(固相阻燃機理)和氮系阻燃劑(氣相阻燃機理)，亦或具有同一阻燃機理的不同阻燃劑，如同為固相阻燃機理的層狀納米無機粒子和磷系阻燃劑，復配使用，不僅能夠提高阻燃體系的阻燃效率，還能降低阻燃體系中某一組分的含量，使得復合材料在一些要求嚴苛的特殊領域仍能滿足使用要求。截至目前，典型的協同阻燃體系包括鹵一磷協同、鹵一氮協同、磷-氮協同、磷一磷協同、鹵一硼協同等。鹵系阻燃劑燃燒時會釋放有毒煙氣，對人身財產安全和生態環境都會構成威脅，因而采用鹵素阻燃劑的協同阻燃劑體正慢慢退出市場。由于氮系阻燃劑和納米阻燃劑本身具有無毒環保、阻燃效率高等特點，將氮系阻燃劑與納米阻燃劑復配協同使用正逐步取代含鹵協同體系，成為阻燃領域的研究熱點之一。http://www.inaodoi.com/
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