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1. 发明申请

WO2011092546A3 USE OF A GLASS COMPOSITION FOR MAKING A SOLAR COLLECTOR WITH A GLASS-METAL JOINT 审中-公开
标题翻译：使用玻璃组合物制造具有玻璃 - 金属接头的太阳能收集器
公开(公告)号：WO2011092546A3
公开(公告)日：2011-12-01
申请号：PCT/IB2010003348
申请日：2010-12-24
申请人： GERRESHEIMER PISA S P A , FIORENTINI LORENZO PAOLO DANTE , SOLDANI MARCO , BELLINA OLIVER
发明人： FIORENTINI LORENZO PAOLO DANTE , SOLDANI MARCO , BELLINA OLIVER
IPC分类号： C03C3/091 , C03C27/02 , F24J2/46
CPC分类号： C03C3/091 , C03C8/24 , C03C27/02 , C03C27/044 , F24J2/055 , F24J2/465 , F24J2002/4681 , Y02E10/44 , Y10T428/131
摘要： Use of a glass composition to make a tubular glass body that is adapted to form a glass-metal joint in a tubular solar collector. The composition is a borosilicate glass having a dilatometric chart with a hard segment and a soft- segment hysteresis where the soft segment glass transition temperature is less than the hard-segment glass transition temperature for a temperature difference (??) higher than 20°C, in particular higher than 30°C, preferably higher than 40°C. In particular, the composition comprises: - 5% to 8% Na2O, - 0, 1% to 3% K2O, - 0, 1% to 1, 5% CaO, - 5% to 7,5% Al2O3, - 70% to 75% SiO2, - 11,6% to 13,7% ?2O3, and owing to the choice of the B2O3 in the range indicated, in combination with the other components, there is a glass transition temperature lower than other borosilicate glasses, and the remarkable difference between the soft and hard segments glass transition temperatures make it possible to obtain a tubular glass body for a solar collector with minimum thermal stress in the working temperature ranges. To the above described composition an oxide can be added selected from the group consisting of: from 0,01% to 1,0% MgO; from 0,01 % to 1% Li2O; from 0,01% to 2% BaO; or a combination thereof.
摘要翻译：使用玻璃组合物制造管状玻璃体，其适于在管状太阳能收集器中形成玻璃 - 金属接头。该组合物是硼硅酸盐玻璃，其具有具有硬链段和软链段滞后的膨胀计图，其中软链段玻璃化转变温度小于硬链段玻璃化转变温度，对于高于20℃的温差（Δε）特别是高于30℃，优选高于40℃。特别地，该组合物包含： - 5％至8％的Na 2 O，-0.1％至3％的K 2 O，-0.1％至1.5％的CaO，-5％至7.5％的Al 2 O 3， - 70％至75％的SiO2， - 11.6％至13.7％的Al2O3，并且由于选择所示范围内的B2O3，与其它组分相结合，玻璃化转变温度低于其它硼硅酸盐玻璃，并且软段和硬段玻璃化转变温度之间的显着差异使得可以在工作温度范围内获得用于太阳能收集器的具有最小热应力的管状玻璃体。对于上述组合物，可以添加选自以下的氧化物：0.01％至1.0％的MgO; 从0.01％至1％Li 2 O; 从0.01％至2％BaO; 或其组合。

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