Sinochem International Showcases Multiple Innovative Achievements at the 2025 China International Composites Exhibition

Sinochem International adheres to the concept of innovation-driven and sustainable development, continuously focusing on the pain points of industry development needs, concentrating on developing comprehensive integrated material solutions, and leading new development trends in the industry.

In response to the safety upgrade requirements of the new national standards for power batteries, Sinochem International showcased its flame-retardant series of epoxy prepreg resin, Sinapara, for the first time at this exhibition.^®Aramid NCF warp-knitted fabric and StarAir^®The integrated material solution for power battery boxes composed of three core materials of foamed PPE can meet the performance requirements of power battery systems for "high safety, lightweight, and long range."

● Flame-retardant series epoxy prepreg resin: applied to the upper box cover plate of the power battery pack.

● sinapara^®Aramid NCF warp-knitted fabric: Applied to the bottom protective plate of the power battery pack lower case.

● StarAir^®Foamed PPE: Applied to the liquid cooling plate of the lower housing of power battery packs

At this exhibition, Sinochem International showcased for the first time the application of high-toughness epoxy prepreg resin in lightweight bicycles, such as high-end carbon fiber road bikes and mountain bikes.

The prepreg resin significantly improves the impact resistance and fatigue performance of carbon fiber components with its exceptional toughness, effectively resisting cracking and delamination. It transforms the previous brittle fracture into a more resilient energy absorption mode, addressing the reliability issues of traditional epoxy carbon fiber frames that are prone to sharp impacts and have weak impact resistance. This achieves a balance of "lightweight," "high rigidity," and "high toughness," effectively solving the key pain points of traditional carbon fiber composite materials and providing riders with enhanced safety and riding experience.

At this exhibition, Sinochem International focused on promoting a series of epoxy resins and high-performance material products in the fields of transportation, clean energy, and low-altitude economy composite applications. The company showcased the environmental friendliness and green sustainability of its products, highlighting the future development direction of their application. It demonstrated its determination and confidence in driving industry upgrades in terms of products and processes.

The poly(dicyclopentadiene) (PDCPD) resin independently developed by Sinochem International is a high-performance engineering plastic. Its application in the exterior parts of engineering machinery effectively solves multiple application challenges of traditional materials.

PDCPD material possesses exceptionally high impact strength and toughness, effectively resisting stone impacts and minor collisions in harsh working conditions of construction machinery, addressing the durability issue of components that are prone to cracking and damage. Additionally, its reaction molding process is almost unrestricted by product size and shape, allowing for the integrated molding of large, complex surface appearance parts with exquisite textures, avoiding the seam issues of metal materials. Moreover, the excellent corrosion resistance of PDCPD material itself enables it to withstand the erosion of oil stains, chemicals, and humid environments, solving potential leakage problems inherent in traditional materials. From a production standpoint, its low-pressure reaction injection molding (RIM) cycle is extremely short, significantly enhancing production efficiency and cost-effectiveness, addressing the pain points of long production cycles and high costs for large non-metallic parts.

Sinochem International actively responds to the demands of the new energy market by developing a low-viscosity, long-pot-life, tough, and heat-resistant epoxy resin formulation 9824A/B for Phoenix fiber winding, addressing the material technical requirements for hydrogen fuel cell vehicle storage tanks. This product is suitable for Type III and Type IV hydrogen storage tanks. It features low viscosity and good wettability with carbon fiber and glass fiber, easily penetrating fiber gaps to reduce the difficulty of process molding. The low viscosity also facilitates the expulsion of air bubbles from the resin, preventing the formation of surface bubbles or internal voids in the composite material post-curing, which could result in product defects.

As a global leading supplier of epoxy resin, Sinochem International has been deeply engaged in the clean energy industry. It has independently developed the "high-purity epoxy resin purification and separation process" and the "segmented reaction and closed-loop process for epoxy resin." Through process integration, it can meet the needs of wind turbine blade manufacturers for resins with different properties.

The epoxy resin vacuum infusion system solution exhibited this time consists of a two-component system of epoxy resin YN8138A and curing agent YN8138B. It features moderate viscosity, long operating cycle, and low exotherm. The fully cured resin system has high mechanical strength, excellent heat resistance, and superior fiber impregnation and adhesion properties. This system fully meets all the performance requirements of DNV-GL (Det Norske Veritas - Germanischer Lloyd) for infusion systems used in wind power.

During the exhibition, Sinochem International's booth attracted numerous domestic and international customers and buyers to discuss business and explore industry development trends. Technical personnel provided detailed explanations to customers and visitors about the main features, advantages, and applications of various showcased products and solutions, actively understanding customer needs to better meet market demands.

During the technical exchange session, Sinochem International shared a thematic presentation titled "Application of Para-aramid in Composites," providing a systematic introduction to sinapara.^®Para-aramid, as a key reinforcement in high-end composite materials, offers performance advantages such as high strength, high modulus, impact resistance, and lightweight characteristics. Natural para-aramid fibers can provide core protection and lightweight load-bearing for high-pressure vessels and civil aviation structural components. The colored fibers, achieved through solution-dyeing technology, have stable color and can be directly applied to end products such as sports equipment and consumer electronics casings. They combine aesthetic value with the advantage of no need for painting, expanding the possibilities of composites in consumer fields, and have garnered significant attention and recognition from professional audiences on-site.