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有良好工艺的丁基防水嵌缝胶

  • 发布时间 : 2023-2-25 19:27:16
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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.

有良好工艺的丁基防水嵌缝胶

(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.

  • 发布时间 : 2023-2-25 19:27:16
  • Views:
Information

       耐温性能是丁基防水嵌缝胶的关键。在TRT的发展中,为了不白白浪费掉高炉煤气的热能,湿式除尘技术改为干式除尘技术,去除了用水降温除煤气中尘土杂质步骤,节省了大量水资源,但使TRT的工作温度大幅度提高,平均温度为200 ℃。所以丁基防水嵌缝胶能满足长期在200 ℃下适用。以免发生高温老化失效影响设备平稳运行。

       流动性。由于丁基防水嵌缝胶的应用场合为桦槽内部,丁基防水嵌缝胶先涂抹于桦槽与叶根处然后把叶片推进桦槽。要想达到密封保护基体的作用,就必须保证丁基防水嵌缝胶的流动性较好,以免在推入叶片的过程中部分丁基防水嵌缝胶被刮蹭,桦槽处产生缝隙。

       硬度叶片在工作时会产生震动,为了使密封材料起到减振阻尼的作用,丁基防水嵌缝胶必须有一定的弹性。要求固化后的丁基防水嵌缝胶的硬度为Shore A35左右。

       耐腐蚀性要求丁基防水嵌缝胶在酸性腐蚀环境下仍能保持其性能不改变或下降较少,且与基体有良好的粘结性。

    综上所述的基本性能要求条件,对在市销售的有良好工艺的丁基防水嵌缝胶进行调查,并且筛选出以下产品进行了初步基本性能测试试验。结合原用丁基防水嵌缝胶的失效分析结果、对耐温性丁基防水嵌缝胶应用的分析和相关的文献资料,我们拟采用环氧树脂类和有机硅类的市场现有的产品作为叶根和桦槽之间的密封材料。根据实际工况需求,首先我们对市场上生产工艺成熟的环氧树脂进行调研,拟筛选出一种能够达到可操作时间0.5一2 h,固化时间大于4h,耐200 ℃高温,耐饱和NH4C1溶液腐蚀(100 ℃)的环氧树脂作为密封材料。

       根据图4-1的筛选流程,在众多高性能涂料中筛选,通过试验的反馈,找出满足需要的密封材料。丁基防水嵌缝胶的评价指标如表4-1所示。www.sdyuantai.com

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