Silicone defoamer (Momentive)

Momentive's "TSE382" is a one-component, oxime-based condensation RTV (Room Temperature Vulcanizing) silicone that reacts with moisture in the air to promote crosslinking reactions. In its uncured state, it is a low-viscosity paste, and after curing, it becomes an elastic rubber that forms a highly crosslinked siloxane network structure. Since it employs an oxime-based condensation reaction, it is a "neutral curing type" that does not release corrosive by-products such as acetic acid during the curing process. It exhibits high adhesion strength to aluminum, stainless steel, zinc die-cast, and various engineering plastics (such as ABS, PC, PBT, epoxy, etc.) without the need for surface treatment. In particular, due to the flexibility of the siloxane chains and their low surface energy, it spreads and wets the fine irregularities of the substrate surface, demonstrating a cohesive failure type of adhesion mode with high interfacial adhesion. For more details, please visit our website.

The Momentive product "TSE398" is a one-component, fast-curing, non-corrosive silicone adhesive sealant that cures with moisture in the air. After curing, it forms an elastic silicone rubber and exhibits excellent adhesion to copper, various metals, plastics, ceramics, glass, and more without the need for a primer. It has high fluidity and is designed for easy injection, making it widely applicable from waterproof sealing of electrical and electronic devices to general adhesive applications. - Non-corrosive: Complies with MIL-A-46146B corrosion testing. - Safe to use on highly corrosive metals such as copper and brass. - Fast curing: Tack-free time is only 10 minutes (at 23°C). - Low odor: Releases alcohol vapors during curing (significantly less odor compared to acetate-based products). - Primerless adhesion: Direct adhesion to a wide variety of substrates is possible. - Wide temperature range: Suitable for high and low temperature environments from -55°C to +200°C. - Excellent weather resistance, ozone resistance, and chemical resistance. - Outstanding electrical insulation properties: Ideal for sealing high-voltage components. - One-component formulation for easy handling. For more information, please visit our website.

Momentive's "TSE3925" is a one-component, moisture-curing, low-volatility silicone adhesive. It cures at room temperature by reacting with moisture in the air, forming a silicone rubber that combines flexibility and elasticity. The product has a non-flowing paste-like consistency, making it resistant to dripping after application. It ensures minimal displacement during application on vertical surfaces, inclined surfaces, and uneven areas, providing stable workability. The tack-free time is approximately 5 minutes at 23°C, demonstrating excellent fast-curing properties that contribute to shortening processes in manufacturing lines and on-site work. In terms of adhesion performance, it exhibits excellent adhesion to a wide range of substrates, including metals, various plastics, glass, and ceramics, without the need for a primer. Additionally, the content of low molecular weight siloxanes is extremely low (0.028 wt%), making it safe for use in sensitive electronic components and sensor areas where siloxane gas may cause contact failure or contamination. For more details, please check our website.

Silicone adhesives and potting compounds are excellent in heat resistance, electrical insulation, and flexibility, making them widely adopted in various fields such as electronics, automotive, and medical devices. However, there are many types, including "condensation type (moisture curing)," "addition type (thermosetting, UV curing)," and "UV curing type," each with significantly different curing mechanisms and characteristics. For the purchasing department, the common challenge is "what criteria to use for selection," while for the technical department, it is "whether it fits the company's processes." We will systematically organize the main types of silicone, explaining their characteristics, advantages, and points to note. 1: Basic structure and characteristics of silicone materials 2: Condensation type (moisture curing) silicone 3: Addition type silicone (thermosetting, UV curing) 4: Selection points and comparisons by type Summary For more details, please visit the website of Adachi New Industry Co., Ltd.