磷酸亚锡玻璃-聚四氟乙烯复合材料的制备与表征

Pub Date : 2024-04-26 DOI:10.1515/ijmr-2023-0237

J. Shyu, Pei-Chun Tsai

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引用次数: 0

摘要

通过烧结工艺将低T g SnO-MgO-P2O5（SMP）玻璃与聚四氟乙烯（PTFE）混合形成复合材料。研究了 SMP:PTFE 比例和烧结温度（350 ℃-430 ℃）对微观结构以及与低热膨胀玻璃基底的结合能力的影响。SMP 和 PTFE 的软化起始温度接近（328 ℃ 和 313 ℃），远低于 PTFE 的失重起始温度（381 ℃）。这对 SMP-PTFE 复合材料的烧结非常重要。烧结后，纯 SMP 玻璃无法与低热膨胀的 1737® 玻璃基底粘合。然而，SMP-PTFE 复合材料在适当温度下烧结后却能与 1737® 粘合。本文讨论了添加 PTFE 增强粘合力的可能机制。

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Preparation and characterization of stannous phosphate glass – polytetrafluoroethylene composites

A low-T g SnO–MgO–P2O5 (SMP) glass was mixed with polytetrafluoroethylene (PTFE) to form composites by a sintering route. Effects of SMP:PTFE ratio and sintering temperature (350 °C–430 °C) on the microstructure and the bonding ability to a low thermal-expansion glass substrate were investigated. The onset softening temperatures of SMP and PTFE are close (328 °C and 313 °C), which are much lower than the onset temperature of weight loss of PTFE (381 °C). This is important for the sintering of SMP–PTFE composites. After sintering, pure SMP glass was not able to bond to the low thermal-expansion 1737® glass substrates. However, SMP–PTFE composites were able to bond to 1737® after sintering at appropriate temperatures. A possible mechanism for the enhancement of bonding by adding PTFE is discussed.

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