| 斷橋鋁門窗的中樞紐部件是在兩部份鋁合金型材間起到連接作用的“隔熱條”，隔熱條的這種使用性質(zhì)決定了其必需同時(shí)具備較高的力學(xué)性能，否則在長(zhǎng)期使用過程中因?yàn)槠渥陨淼睦匣自斐砷T窗、幕墻斷裂脫落，存在重大質(zhì)量安全隱患，所以隔熱條的材質(zhì)選擇顯得至關(guān)重要。 The core part in insulating window is the two thermal insulating bars that connect two parts of the aluminum frame. The usage of insulating bar has required that it shall possess high mechanical performance; otherwise, its aging may result in falling off of window, door or curtain wall after long tern service, bringing remarkable quality and safety risks. Therefore, the selection of insulating bar is extremely important. 
雜質(zhì)的存在會(huì)給隔熱條力學(xué)性能帶來一定的影響，對(duì)此部分廠家通過加入某些增強(qiáng)劑，可以使隔熱條初期力學(xué)機(jī)能得到改善，但因?yàn)檫@些材料是經(jīng)由多次反復(fù)加工使用，樹脂基體內(nèi)存在大量可致降解的自由基，經(jīng)由一段時(shí)間的使用，部份樹脂將發(fā)生分子鏈的斷裂，如尼龍6相鄰分子間的氫鍵結(jié)合比擬尼龍66弱，耐熱機(jī)能相對(duì)較差，在加工成型及后期使用中都易發(fā)生降解，從而影響隔熱條整體性能。 The impurities inside insulating bars will bring negative influence to its mechanic performance. Some manufacturers add some reinforcing agent to the insulating bar material to improve its initial mechanic performance. However, since this kind of material has been processed and used for many times, there are a large among of degradable free radicals inside resin. After using for a while, some resin may encounter molecular chain fracture. For example, the combination between hydrogen bonds of neighboring nylon 6 modules is much weaker than that of nylon 66; as result, its thermal-resistance is relatively poor. After being produced into finished products, they may degrade easily and affect the overall thermal insulating performance. 
斷橋鋁門窗具有重量輕、強(qiáng)度高、剛性好、耐腐無毒、防火機(jī)能優(yōu)異、采光面積大、裝飾效果好、使用壽命長(zhǎng)等特點(diǎn)，因此廣泛為社會(huì)所接受。但是，因?yàn)榱淤|(zhì)原材料成份復(fù)雜，其在性能方面存在根本缺陷，經(jīng)由一段時(shí)間的使用后，隔熱條非常容易老化，力學(xué)性能下降，給產(chǎn)品帶來很大的質(zhì)量隱患和安全隱患。然而目前因?yàn)樵�、生產(chǎn)成本大幅上漲，國(guó)內(nèi)隔熱條市場(chǎng)極為混亂，各種劣質(zhì)隔熱條渾水摸魚，瞞天過海，原材料檔次也相差甚遠(yuǎn)，有正牌料、水口料和回收垃圾料之別，質(zhì)量和性能都相差很大。 Since the thermal insulating aluminum window and door have the advantages of light weight, high strength, excellent rigidity, good corruption-resistance, non-hazardous, brilliant flame-resistance, large day lighting area, effective decoration and long service life, they are widely accepted by the society. However, due to application of unqualified material, the product may suffer poor mechanic performance and easy aging after using for a while, resulting in significant quality issues and safety issues. Meanwhile, rapid increase in raw material price drives rapid growth of product cost. Nowadays, the insulating bar market in China is complicated, as a lot of manufacturers adopt unqualified materials. Finally, the difference in quality and performance among branded material, drainage opening material and recycled material is significant. 
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