Low Melting Point Glass Powder: The Key Innovative Material Breaking Traditional Limitations
Release time：2025-06-19
This article focuses on the detailed performance parameters and application scenarios of Low Melting Point Glass Powder.
What is Low Melting Point Glass Powder?
Low Melting Point Glass Powder is a specially formulated and finely processed glass material, characterized by its ability to soften and flow at temperatures far lower than traditional glass, enabling tight sealing between materials. Unlike conventional glass that requires extremely high temperatures to melt, the formula of low melting point glass powder (low-temperature sealing glass) is designed to have a significantly lower sintering temperature, making it ideal for sensitive components and materials that cannot withstand high temperatures, avoiding damage to assemblies from high-temperature processes.
This material exhibits excellent fluidity, capable of uniformly filling molds to form a dense structure. It has outstanding bonding ability with various materials (such as glass, ceramics, metals, and semiconductors), forming highly reliable and airtight sealing layers. In practical applications, the key to ensuring sealing quality lies not only in its low-temperature characteristics but also in the precise matching of the coefficient of thermal expansion (CTE) between the glass powder and the materials being sealed. If the CTE is mismatched,uneven stress during cooling can cause cracking or breaking, affecting the long-term reliability of the seal. Therefore, the development and application of low melting point glass powder require suppliers to possess profound materials science knowledge and precise formula control capabilities.
Sinopride(www.spcera.net)'s Low-Temperature Glass Powder: Analysis of LC-1 Model
1. LC-1 Parameters
|
Model |
Thermal Expansion Coefficient ×10⁻⁷/K |
Sintering Temperature (°C) |
Sintering Density (g/cm³) |
Color |
Glass System/Remarks |
|
LC-1 |
11.0±0.5 |
500-530 |
6.7 |
Dark green |
Bismuthate |
The bismuth-based system of LC-1 is crucial for achieving low-temperature sealing. This glass system is renowned for its low melting point and good chemical stability, making it particularly suitable for specific applications with high sealing requirements, such as vacuum thermal insulation.
LC-1's lead-free property not only aligns with global environmental trends but also supports green certifications for end products. Its application in low-temperature sealing of vacuum insulated cups can significantly enhance the product's vacuum degree and thermal insulation effect. For scenarios where high-temperature sealing is impossible due to special materials or sintering conditions, LC-1 provides an ideal solution, demonstrating excellent airtightness and bonding strength.
2. Sinopride's Supply of Low-Temperature Glass Powder LC-1
• Customization Capability: Provides customized formulas for specific thermal expansion, chemical resistance, and color requirements (e.g., white, green, blue glass to meet aesthetic or functional needs).
• Quality Certifications: Certified by ISO 9001, ISO 14001, and IATF 16949, ensuring performance consistency across batches.
• Production Scale: 3 granulated powder production lines with a monthly capacity of 100 tons, supporting large orders from global customers.
• Technical Support: Application-specific solutions provided by a team of overseas returnee doctors with 30 years of industry experience.
3. Competitive Advantages of Sinopride's Low Melting Point Glass
Compared with traditional sealing materials (such as epoxy resins or metal gaskets), low melting point glass powder offers:
• Excellent Temperature Resistance: Maintains integrity at 500°C, outperforming organic seals that degrade at high temperatures.
• High Airtightness: Gas leakage rate as low as 1×10⁻⁹ Pa・m³/s, critical for aerospace and medical equipment.
• Chemical Stability: Resists corrosion from lithium battery electrolytes, acids, and salts.
• Independent R&D of Core Formulas (e.g., SH604 replaces imported materials like U.S. #13 glass).
Vertical integration from powder synthesis to finished seals, ensuring cost-effectiveness.
Diverse Application Scenarios of Low Temperature Glass Powder
Innovation in Industrial Sealing
Low Melting Point Glass Powder is driving innovation in sealing technologies across multiple industrial sectors. Its low-temperature sintering property makes it ideal for protecting heat-sensitive or precision components, effectively solving material damage issues caused by traditional high-temperature sealing.
In the electronics industry, low-temperature glass powder is widely used for sealing and packaging sensors, integrated circuits, and vacuum packages, protecting these sensitive components from moisture, dust, and contaminants to ensure long-term stable operation. For example, in the automotive sector, it provides durable and airtight seals for sensors and critical components in electric vehicles and advanced driver assistance systems (ADAS), ensuring reliability in harsh environments. The medical equipment field also benefits from its biocompatibility and airtightness, used for precise and stable sealing of implants or diagnostic tools. Additionally, in the vacuum thermal insulation sector, low-temperature glass powder is a key material for high-performance vacuum insulated panels or special containers, significantly enhancing product energy efficiency and thermal insulation through highly sealed vacuum layers.
Notably, Sinopride's LC-1 low-temperature glass powder demonstrates excellent performance in low-temperature sealing of vacuum insulated cups, significantly improving product vacuum degree and thermal insulation. It is also widely used in low-temperature sealing applications such as pastes, providing ideal solutions for scenarios where high-temperature sealing is impossible due to special materials or sintering conditions, with good airtightness and excellent bonding.
The wide application of low-temperature glass powder indicates that it is not just a niche material but a key driver for product miniaturization and performance enhancement. Its ability to seal at lower temperatures means it can integrate with a broader range of materials, including heat-sensitive ones, which is crucial for miniaturized electronics and advanced sensor development. The flexibility of this material allows designers to select materials based on optimal performance rather than being limited by processing temperature compatibility, expanding product design possibilities.
Conclusion
As a disruptive material, Low Melting Point Glass Powder is profoundly transforming the sealing landscape of modern industry. It not only offers excellent sealing performance and material compatibility but also demonstrates significant advantages in environmental protection and cost-effectiveness. With its deep professional accumulation, leading R&D strength, strict quality control, and large-scale production capacity, Sinopride has become a leader in this field.
Sinopride's LC-1 low-temperature glass powder, with its lead-free environmental friendliness, excellent performance, and broad application potential, provides reliable solutions for multiple industries such as electronics, automotive, medical, and vacuum thermal insulation. Choosing Sinopride means partnering with a reliable provider of high-quality products, customized services, and professional technical support. Sinopride is committed to being a Chinese pride in the field of special glass and new ceramics, contributing to the innovation and development of materials science.
We sincerely invite you to visit Sinopride's official website to learn more about our product range or contact our expert team directly to explore how advanced Low Melting Point Glass Powder solutions can help your projects succeed.
