配制单组分聚氨酯密封胶由经预处理后的氧化铜粉

发布时间 : 2025-1-25 20:22:18
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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.

配制单组分聚氨酯密封胶由经预处理后的氧化铜粉

(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 : 2025-1-25 20:22:18
Views:

与磷破一纽化铜单组分聚氨酯密封胶的配制单组分聚氨酯密封胶由经预处理后的氧化铜粉(商称，甲)和经预处理后的磷酸溶液(简称乙)按一定比例配制而成。配比R实验证明:比值R愈大，粘接强度愈高，但大到一定限度时，粘接强度提高的趋势减缨，固化加快。为了兼顾粘接强度和固化速度，R值选在2.5-3.0为宜。先将称好的氧化铜粉(甲)置于光滑的铜板或玻璃板上，中部留一个小凹坑，用量筒量取磷酸溶倒入凹狐用竹片和玻璃棒将甲和乙搅拌调匀，至能接成长1cm以上的细丝即可使用。注意事项氧化铜与磷酸的反应是放热反应，如果放出的热量来不及散发，则反应速度加快温度骤增，从而使单组分聚氨酯密封胶液迅速凝固，这种现象称作为爆聚现象。为防止爆聚的发生，应注意以下事项。

要严格做好氧化铜粉和磷酸溶液的预处理。夏季气温高，必要时应在导热性良好的铜锅里配单组分聚氨酯密封胶，以便于散热。必要时可将锅底浸在冷水中配单组分聚氨酯密封胶，以加快散热速度，防止出现爆聚。大，每次配单组分聚氨酯密封胶量不宜过多，如用单组分聚氨酯密封胶量可同时分成若干分调单组分聚氨酯密封胶，再集中一次用因预处理后的氧化铜和磷酸的温度比较高，故必须冷却至室温后方可使用，否则也有可能发生爆聚。冬季气温低时，宜在玻璃板上调单组分聚氨酯密封胶，以防止单组分聚氨酯密封胶液冻熟否则要将磷酸溶液和被粘接的工件进行预热。磷酸中的氢氧化铝在气提.较低的冬季结晶，因此须置于热水中浸泡至完全融化后使用。氧化铜粉吸湿牲佬，每次用完后及时加盖密封在干燥器中保存。如果氧化铜粉受潮，可放在10=200℃烘箱中烘干，然后再密封保存。http://www.sdyuantai.com/

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