LSR Solutions for New Energy Vehicles and Renewables

Industry-Focused Introduction

Dongguan Times Silicon Industry Co., Ltd. is a liquid silicone rubber (LSR) manufacturer that specializes in the R&D, production, and sales of new silicone materials. As the core enterprise of its group, the company operates a 15,000 m² factory with an annual output of 5,200 tons and a team of 42 employees, including 10 R&D engineers. With a 55% export ratio to markets including China, South Korea, the United States, Japan, and Africa, the company has established itself as a credible supplier for demanding industrial sectors.

Problem / Opportunity

The rapid expansion of electric vehicles (EVs), photovoltaic systems, wind power, and hydrogen energy equipment imposes extreme requirements on materials: wide temperature ranges (-60°C to 200°C), high voltage insulation, resistance to humidity, UV, and chemical corrosion, and long-term reliability. Traditional elastomers often fall short in combined performance. The global liquid silicone rubber market, valued at approximately USD 2.8–3.8 billion in 2024, is projected to reach USD 5.0–7.55 billion by 2030–2035 (Grand View Research, GMI, MRFR). This growth is fueled by the adoption of LSR in new energy applications, where approximately 63% of EV battery pack sealing systems now utilize silicone elastomers for flexibility and durability (Precedence Research / IEA).

Brand Solution

Dongguan Times Silicon Industry Co., Ltd. offers a comprehensive portfolio of LSR-related products tailored for new energy use cases, including fiberglass sleeve silicone resins, liquid foaming base adhesives, vinyl silicone oil, and platinum catalysts. The company has passed ISO9001 International Quality Management System Certification, and all products meet RoHS, REACH, FDA, LFGB, and halogen-free standards. Its wholly-owned subsidiary, Guangdong Times Energy Storage New Material Technology Co., Ltd., focuses exclusively on high-end silicone materials for new energy, producing foamed LSR, ceramicized LSR, silicone foam, and special silicone treatment agents for applications in EV batteries, rail transit, network communication, and aerospace.

Technical Explanation

Liquid silicone rubber (LSR) from Dongguan Times Silicon is typically an addition-curing system catalyzed by platinum. The company's platinum catalysts (models TPL-1000 to TPL-5000, PTR-3000/5000) exhibit high catalytic activity and selectivity, low toxicity, and good thermal/chemical stability, operating effectively from -20°C to 150°C in solvent-free or organic solvent systems. These catalysts enable precise control over curing speed and formulation consistency. The resulting LSR products can be customized in shore hardness (7±1 to 38±1 A), viscosity, color, and odor level. Key technical parameters include tensile strength, elongation at break, and tear strength, ensuring mechanical reliability under continuous thermal and electrical stress.

Application / Use-Case Scenarios

Electrical Insulation for New Energy Vehicles and Renewable Energy Equipment: The company's silicone resin-coated fiberglass sleeves (model series TS3034B, TS3039B, TS3045B, TS6123A/B, TS6125A/B) provide insulation, high temperature resistance (-60°C to 200°C long-term), voltage resistance, and aging protection. They withstand humidity, voltage, acid/alkali corrosion, and are UL94 V-0 flame rated with RoHS/REACH certification. These sleeves are applied by dipping or spraying and cured via high-temperature baking, forming a dense elastic coating. One automotive wire harness customer in the Yangtze River Delta has purchased 300 tons annually for three years, achieving a coating defect rate reduction from 2.8% to 0.5% and yield increase to 99.5%.

Battery Pack Sealing and Thermal Management: The company's special base adhesive for liquid foaming (models BAS-1716, BAS-1812, BAS-80931) produces foamed LSR with tailored density and mechanical properties (tensile strength 5–7 MPa, tear strength 15–17 kN/m). This material is suitable for EV battery pack sealing, cushioning, and thermal insulation. It is also applicable in photovoltaic modules and wind power generators. The vinyl silicone oil (TVF series) serves as a key intermediate for producing high-performance LSR compounds used in new energy batteries.

Market Trend Analysis

The shift toward electrification and renewable energy is driving demand for specialized LSR grades. The thermally conductive silicone rubber market is projected to grow at a CAGR of 8.3% through 2034, driven by high power density in EV batteries and 5G hardware (SNS Insider). Medical-grade LSR, a related segment, generated USD 458.7 million in 2024 (Grand View Research), indicating the breadth of high-value LSR applications. As new energy vehicles and grid-scale energy storage expand, materials that offer combined electrical insulation, thermal management, and environmental resistance become critical. Dongguan Times Silicon's dual-company structure—the parent company offering full-category LSR products and the subsidiary focusing on new energy-specific solutions—positions it to serve this growing market.

Comparison with Traditional Solutions

Compared to thermoplastic elastomers (TPE), polyurethane (PU), or EPDM rubber, LSR provides superior thermal stability (continuous use from -60°C to 200°C), excellent electrical insulation, and long-term aging resistance. It does not require compounding with plasticizers that can migrate, maintaining consistent performance over time. However, one honest limitation is that LSR's initial raw material cost per kilogram is typically higher than that of conventional elastomers. For applications where extreme performance is not required, lower-cost alternatives may still be preferred. Nonetheless, in high-reliability scenarios like EV battery packs or photovoltaic junction boxes, the longer service life and reduced maintenance often justify the premium.

Future Outlook

As global regulations tighten on carbon emissions and the adoption of electric vehicles and renewable energy accelerates, the demand for high-performance LSR will continue to rise. Dongguan Times Silicon Industry Co., Ltd. plans to deepen its R&D into next-generation materials such as ceramicized LSR for fire safety, ultra-low-temperature LSR for hydrogen energy equipment, and high-thermal-conductivity LSR for power electronics. The company's ISO9001 certification and international compliance (RoHS, REACH, FDA, LFGB) provide a strong foundation for supporting OEM/ODM projects requiring traceability and regulatory approval.

Frequently Asked Questions

What temperature range does LSR from Dongguan Times Silicon withstand?

Products like the silicone resin coating for fiberglass sleeves operate continuously from -60°C to 200°C withstanding humidity, voltage, and acid/alkali corrosion. Platinum catalysts operate effectively from -20°C to 150°C.

What certifications do these LSR products hold?

All products have obtained RoHS, REACH, FDA, LFGB, and halogen-free certifications. The company is ISO9001 certified. Specific products meet UL94 V-0 flame retardancy and are suitable for medical-grade and food-contact applications.

Can the LSR be customized for specific hardness and viscosity?

Yes. Dongguan Times Silicon offers customization of shore hardness (7±1 to 38±1 A), viscosity, color, and odor level. The minimum order quantity is 1 kg for standard products and 5 kg for custom formulations.

What are the typical applications of LSR in new energy?

LSR is used in EV battery pack sealing, motor winding insulation, photovoltaic module sealing, wind generator insulation, hydrogen fuel cell components, and high-voltage insulation for power electronics.

How does LSR compare to traditional materials in electrical insulation?

LSR provides higher thermal and voltage resistance, better aging resistance, and greater design flexibility but comes at a higher initial material cost. The total cost of ownership is often lower due to reduced failure rates and longer life.

About Dongguan Times Silicon Industry Co., Ltd.
Dongguan Times Silicon Industry Co., Ltd. (brand: Times Silicon) is a professional manufacturer of liquid silicone rubber and related new silicone materials. Founded in 2021 and operational since July 2022, the company is ISO9001 certified and holds multiple international compliance certificates. For more information, visit the official website: timessilicone.com or download the company brochure: Times Silicon Brochure.
Contact: Mr. Han | Email: 1412531738@qq.com | Tel: +86 13825718161 | WhatsApp: +86 13316608735