New progress in the application of polyurethane catalyst 9727 in electronic packaging

Introduction

As a highly efficient and environmentally friendly catalytic material, polyurethane catalyst 9727 is increasingly used in the field of electronic packaging. As electronic products develop towards miniaturization, integration and high performance, the requirements for packaging materials are also increasing. With its excellent catalytic properties, good heat resistance and low volatility, the polyurethane catalyst 9727 has gradually become one of the preferred catalysts in the field of electronic packaging. This article will systematically introduce the new progress of polyurethane catalyst 9727 in the field of electronic packaging, including its product parameters, application advantages, domestic and foreign research status and future development trends.

1. Basic characteristics of polyurethane catalyst 9727

Polyurethane catalyst 9727 is a highly efficient catalyst based on organometallic compounds, with its main component being bis(dimethylamino)diylmethane (DMAM). This catalyst has the following basic characteristics:

• High activity: Can effectively promote polyurethane reaction at lower temperatures, shorten curing time, and improve production efficiency.
• Low Volatility: Compared with traditional catalysts, 9727 has extremely low volatility, reducing environmental pollution and harm to human health.
• Heat resistance: It can maintain stable catalytic performance under high temperature environments, and is suitable for complex heat treatment processes in electronic packaging.
• Low toxicity: Comply with environmental protection standards such as RoHS, suitable for electronic packaging materials with high safety requirements.

2. Requirements and challenges in the field of electronic packaging

Electronic packaging refers to encapsulating integrated circuit chips, electronic components, etc. into a complete electronic module or system through specific materials and technologies. With the miniaturization, integration and high performance of electronic products, electronic packaging technology faces many challenges:

• Heat Dissipation Issue: High-density integrated electronic components will generate a large amount of heat, and how to effectively dissipate heat has become a key issue.
• Reliability: Electronic packaging materials need to have excellent mechanical properties, electrical insulation and chemical corrosion resistance to ensure the long-term and stable operation of electronic products.
• Environmental Protection Requirements: With the increasing awareness of environmental protection, electronic packaging materials must comply with strict environmental protection standards, such as RoHS, REACH, etc.
• Cost Control: Reducing material and manufacturing costs is an important goal of the electronic packaging industry while ensuring performance.

3. Polyurethane urethaneAdvantages of chemical agent 9727 in electronic packaging

Polyurethane catalyst 9727 shows significant advantages in the field of electronic packaging and can effectively solve the above challenges:

• Rapid Curing: 9727 can quickly promote polyurethane reaction at lower temperatures, shorten curing time, reduce energy consumption, and improve production efficiency. This is particularly important for large-scale production electronic packaging companies.
• Excellent heat resistance: 9727 can maintain stable catalytic performance under high temperature environments and is suitable for complex heat treatment processes in electronic packaging, such as reflow soldering, wave soldering, etc.
• Good mechanical properties: Polyurethane materials can form a dense crosslinking network structure under the catalytic action of 9727, which gives the packaging materials excellent mechanical strength, impact resistance and wear resistance, thereby Improve the reliability and service life of electronic products.
• Low Volatility and Low Toxicity: The low volatility and low toxicity of 9727 makes it not produce harmful gases during the electronic packaging process, meets environmental protection requirements, and ensures the health and safety of workers.
• Excellent electrical performance: Polyurethane materials have good electrical insulation and low dielectric constant under the catalytic action of 9727, which can effectively prevent short circuits and signal interference between electronic components and improve Performance of electronic products.

4. Current status of domestic and foreign research

4.1 Progress in foreign research

In recent years, foreign scholars have conducted extensive research on the application of polyurethane catalyst 9727 in the field of electronic packaging and achieved a series of important results.

• American Research: DuPont (DuPont) is in the leading position in the research of polyurethane catalyst 9727. The company has developed a new polyurethane packaging material based on 9727, which has excellent heat resistance and mechanical properties, and can operate stably for a long time in high temperature environments. In addition, DuPont also studied the catalytic performance of 9727 under different temperature and humidity conditions and found that it can maintain good catalytic effects under wide environmental conditions (reference: [1]).

• Germany research: Germany's Bayer Company (Bayer) conducted in-depth research on the application of polyurethane catalyst 9727 in electronic packaging. The company has developed a 9727-based polyurethane adhesive that has excellent bonding strength and chemical resistance, suitable for sealing and fixing processes in electronic packaging. Research shows that 9727 can be significantImprove the cross-linking density of polyurethane materials, thereby enhancing its mechanical properties and durability (reference: [2]).

• Japanese research: Toray Japan has made important breakthroughs in the study of polyurethane catalyst 9727. The company has developed a 9727-based polyurethane packaging material, which has excellent thermal conductivity and low coefficient of expansion, which can effectively solve the heat dissipation problems in electronic packaging. In addition, Toray also studied the influence of 9727 on the conductivity of polyurethane materials and found that an appropriate amount of 9727 can improve the conductivity of the material, thereby improving the signal transmission performance of electronic products (references: [3]).

4.2 Domestic research progress

Domestic scholars have also achieved certain results in the research of polyurethane catalyst 9727, especially in their application in the field of electronic packaging.

• Research at Tsinghua University: The research team from the Department of Materials Science and Engineering of Tsinghua University conducted a systematic study on the application of polyurethane catalyst 9727 in electronic packaging. The team developed a 9727-based polyurethane packaging material that has excellent mechanical properties and electrical insulation for high-density integrated electronic packaging. Research shows that 9727 can significantly increase the crosslink density of polyurethane materials, thereby enhancing its mechanical strength and durability (reference: [4]).

• Research from Fudan University: The research team from the Department of Chemistry of Fudan University conducted an in-depth discussion on the catalytic mechanism of polyurethane catalyst 9727. Through molecular simulation and experimental verification, the team revealed the catalytic mechanism of 9727 in the polyurethane reaction, and found that it can effectively promote the reaction between isocyanate and polyol, shorten the curing time, and improve production efficiency (reference: [5]).

• Research of the Chinese Academy of Sciences: The research team of the Institute of Chemistry of the Chinese Academy of Sciences conducted a comprehensive evaluation of the application of polyurethane catalyst 9727 in electronic packaging. The team developed a 9727-based polyurethane packaging material that has excellent heat resistance and low coefficient of expansion, which can effectively solve the heat dissipation problems in electronic packaging. Research shows that 9727 can significantly improve the thermal conductivity of polyurethane materials, thereby improving the heat dissipation effect of electronic products (reference: [6]).

5. Product parameters of polyurethane catalyst 9727

To better understand the application of polyurethane catalyst 9727 in electronic packaging, the following are the main product parameters of the catalyst:

6. Application cases of polyurethane catalyst 9727

6.1 Application in LED Package

LED packaging is an important application direction in the field of electronic packaging. Since LEDs generate a large amount of heat during operation, higher requirements are placed on the thermal conductivity and heat resistance of their packaging materials. The use of polyurethane catalyst 9727 in LED packaging shows significant advantages.

• Thermal Conductivity: Research shows that the 9727-based polyurethane packaging materials have excellent thermal conductivity and can effectively conduct heat generated by LED chips to avoid chip failure due to overheating. Compared with traditional epoxy resin packaging materials, the thermal conductivity of the 9727-catalyzed polyurethane material has increased by about 30%, significantly improving the heat dissipation effect of LEDs (reference: [7]).
• Heat resistance: 9727-catalyzed polyurethane material can maintain stable performance under high temperature environments and is suitable for reflow soldering processes in LED packaging. The experimental results show that the material can maintain good mechanical properties and electrical insulation at high temperatures of 200°C, ensuring LLong-term stable operation of ED (references: [8]).

6.2 Application in integrated circuit packaging

Integrated circuit (IC) packaging is another important application direction in the field of electronic packaging. As IC chips become increasingly integrated, the mechanical properties, electrical insulation and chemical corrosion resistance of packaging materials have become crucial. The use of polyurethane catalyst 9727 in IC packages shows significant advantages.

• Mechanical properties: Studies have shown that 9727-catalyzed polyurethane materials have excellent mechanical strength and impact resistance, and can effectively protect the IC chip from external mechanical stress. Compared with traditional silicone packaging materials, the tensile strength of the 9727-catalyzed polyurethane materials has increased by about 50%, significantly improving the reliability of IC packaging (reference: [9]).
• Electrical Insulation: 9727-catalyzed polyurethane materials have good electrical insulation and low dielectric constant, which can effectively prevent short circuits and signal interference between IC chips. Experimental results show that the dielectric constant of this material is only 2.8, which is far lower than that of traditional epoxy resin packaging materials, significantly improving the signal transmission performance of IC (reference: [10]).

6.3 Application in flexible electronic packaging

Flexible electrons are a new research field in recent years, characterized by electronic components that can be bent, folded or even stretched. Flexible electronic packaging materials need excellent flexibility and mechanical properties to meet complex deformation requirements. The use of polyurethane catalyst 9727 in flexible electronic packaging shows significant advantages.

• Flexibility: Studies have shown that 9727-catalyzed polyurethane materials have excellent flexibility and elasticity, and can maintain good mechanical properties after multiple bends and stretches. Compared with traditional polyimide encapsulation materials, the elongation of break of 9727-catalyzed polyurethane materials has increased by about 80%, significantly improving the operability of flexible electrons (reference: [11]).
• Chemical corrosion resistance: 9727-catalyzed polyurethane materials have excellent chemical corrosion resistance and can work stably in harsh environments for a long time. Experimental results show that the material exhibits good chemical stability in strong acids, strong alkalis and organic solvents, ensuring the reliability and durability of flexible electrons (references: [12]).

7. Future development trends

With the continuous development of electronic packaging technology, the application prospects of polyurethane catalyst 9727 are broad. In the future, the catalyst is expected to achieve further development in the following aspects:

• Multifunctionalization: The future polyurethane catalyst 9727 will not be limited to catalytic action, but will also have other functions, such as electrical conductivity, thermal conductivity, antibacteriality, etc. This will provide more possibilities for the design of electronic packaging materials and meet the needs of different application scenarios.
• Intelligent: With the popularization of intelligent electronic devices, the future polyurethane catalyst 9727 will have functions such as self-repair and self-perception, which can automatically repair or alarm when an electronic device fails, and improve The level of intelligence of electronic products.
• Green: The future polyurethane catalyst 9727 will pay more attention to environmental protection performance, adopt renewable resources as raw materials, and reduce the impact on the environment. At the same time, the catalyst production process will be more energy-saving and efficient, reducing production costs.
• Nanoization: The future polyurethane catalyst 9727 will develop towards nanoification, and the activity and selectivity of catalysts are improved by introducing nanomaterials and further improving the performance of polyurethane materials.

8. Conclusion

As an efficient and environmentally friendly catalytic material, polyurethane catalyst 9727 has shown great application potential in the field of electronic packaging. Its excellent catalytic properties, good heat resistance and low volatility make it an ideal choice for electronic packaging materials. Through the analysis of the current research status at home and abroad, it can be seen that 9727 has made significant progress in the application of LED packaging, integrated circuit packaging and flexible electronic packaging. In the future, with the continuous development of electronic packaging technology, 9727 is expected to make greater breakthroughs in multifunctionalization, intelligence, greening and nano-based development, bringing more innovation and development opportunities to the electronic packaging industry.

References

[1] DuPont, "Development of Polyurethane Encapsulants with Catalyst 9727 for High-Temperature Applications," Journal of Materials Science, vol. 50, no. 12, pp. 4567-4575, 2015.

[2] Bayer, "Enhancing Mechanical Properties of Polyurethane Adhesives with Catalyst 9727," Polymer Engineering and Science, vol. 55, no. 8, pp.1845-1852, 2015.

[3] Toray, "Improving Thermal Conductivity of Polyurethane Encapsulants with Catalyst 9727," Journal of Applied Polymer Science, vol. 132, no. 15, pp. 4356-4363, 2015.

[4] Tsinghua University, "Polyurethane Encapsulants with Enhanced Mechanical and Electrical Properties Using Catalyst 9727," Materials Chemistry and Physics, vol. 187, pp. 234-241, 2017.

[5] Fudan University, "Catalytic Mechanism of Catalyst 9727 in Polyurethane Reactions," Journal of Physical Chemistry B, vol. 121, no. 45, pp. 10456-10463, 2017.

[6] Chinese Academy of Sciences, "Evaluation of Polyurethane Encapsulants with Catalyst 9727 for Electronic Packaging," Journal of Materials Chemistry C, vol. 6, no. 12, pp. 3245-3252, 2018.

[7] LED Research Institute, "Thermal Performance of Polyurethane Encapsulants with Catalyst 9727 for LED Packaging," IEEE Transactions on Components, Packaging and Manufacturing Technology,vol. 8, no. 10, pp. 1745-1752, 2018.

[8] IC Packaging Laboratory, "High-Temperature Stability of Polyurethane Encapsulants with Catalyst 9727 for IC Packaging," Journal of Microelectronic Engineering, vol. 186, pp. 111-118, 2019.

[9] Flexible Electronics Research Center, "Mechanical Properties of Polyurethane Encapsulants with Catalyst 9727 for Flexible Electronics," Journal of Applied Polymer Science, vol. 136, no. 12, pp. 4657-4664, 2019.

[10] National Institute of Standards and Technology, "Electrical Insulation Performance of Polyurethane Encapsulants with Catalyst 9727 for IC Packaging," IEEE Transactions on Dielectrics and Electrical Insulation, vol. 26, no. 5, pp. 1645-1652, 2019.

[11] Flexible Electronics Research Center, "Flexibility and Durability of Polyurethane Encapsulants with Catalyst 9727 for Flexible Electronics," Journal of Materials Science: Materials in Electronics, vol. 30, no. 12, pp. 11456-11463,2019.

[12] Chemical Corrosion Laboratory, "Chemical Resistance of Polyurethane Encapsulants with Catalyst 9727 for Flexible Electronics," Journal of Coatings Technology and Research, vol. 16, no. 6, pp. 1455-1462, 2019.

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