At the 2025 (17th) Annual Conference of the Automotive Adhesive and Sealant Industry themed "Low-Carbon Leadership, Intelligent Drive, Innovative Development," Ren Shujian, General Manager of Shanghai KLEBER's Adhesives Division, as an invited expert, delivered a special report titled "Application and Challenges of Adhesive Bonding for Automotive Composites." He also participated in a summit interview, sharing strategies for adhesive technology to make breakthroughs amidst the wave of innovation in automotive materials in China.

Innovative Solution for Carbon Fiber Bonding Deformation Tackles Industry Pain Points

Addressing the core challenge of bonding deformation in carbon fiber sheets during the lightweighting process of new energy vehicles, Ren Shujian systematically presented, for the first time in his report, the groundbreaking application results of KLEBER's AA510 two-component acrylic adhesive. This product has become the preferred choice for multi-material bonding due to three major advantages:

lBroad Material Compatibility: Enables strong bonds between metals, CFRP, PC-ABS, and engineering plastics.

lHigh Efficiency & Energy Saving: Features rapid curing at room temperature and accelerated curing at a low temperature of 80°C, reducing baking energy consumption by over 50%.

lExcellent Performance: Offers ultra-high bond strength and low shrinkage characteristics, significantly mitigating the risk of carbon fiber deformation.

"AA510 provides a new pathway for vehicle body weight reduction and cost control, particularly suitable for mass production requirements involving heat-sensitive composites," emphasized Ren Shujian during his speech.

Strategic Layout of Structural Adhesive Technology in the Multi-Material Era: Summit Interview

During the guest dialogue session, Ren Shujian pointed out that the trend towards mixed-material bodies (steel, aluminum, magnesium, composites) in China's automotive industry is firmly established. He offered a forward-looking perspective: "The core philosophy of future body design lies in applying the right adhesive precisely to the right location. Material diversification is not a challenge, but a strategic opportunity for innovation in adhesive technology."

To this end, KLEBER has built a comprehensive technology matrix:

lTwo-Component Acrylic Adhesives (XBOND AA Series): Instant performance, suited for fast production cycles.

lTwo-Component Epoxy Adhesives (EA Series): Ultra-high strength, bearing critical structural loads.

lTwo-Component Polyurethane Adhesives (UA Series): Flexible and weather-resistant, addressing thermal expansion differences between dissimilar materials.

All three product lines support both room temperature curing and low-temperature baking processes, providing key technical support for automakers to reduce carbon emissions and manufacturing costs.

Driving Industry Low-Carbon Transformation with Engineering Capabilities, Innovating the Future

Leveraging the platform of this annual conference, KLEBER also showcased its profound expertise in adhesive application engineering. "We don't just provide materials; we offer comprehensive solutions spanning from design validation to production line adaptation," stated Ren Shujian.

This year's conference was hosted by Guangdong Shilihe. Auto Industry Group Co., Ltd. and gathered leading companies and technical leaders from the industry. KLEBER's cutting-edge technology sharing not only aligned with the conference theme of "Low-Carbon Leadership, Intelligent Drive" but also injected innovative momentum into the high-quality development of China's automotive adhesive industry through quantifiable cost-reduction and efficiency-improvement solutions.