---Green engine from material innovation to industrial change

1. Technical breakthrough of regenerative PC/ABS: solve the problem of balance between performance and environmental protection

In recent years, the application of recycled PC/ABS alloy materials in the automobile industry has witnessed an explosive growth. Behind this trend are multiple breakthroughs in material modification technology, which not only solve the pain point of the performance decay of recycled plastic, but also meet the dual needs of automobile lightweight and environmental protection.

1. Molecular chain repair and performance improvement

The degradation of traditional recycled PC/ABS materials leads to molecular chain fracture and decreased mechanical properties, which is difficult to meet the high standard of auto parts. Through the synergistic action of epoxy chain extenagent and porous adsorbent, the broken molecular chain can be repaired and adsorbed. For example, the recycled PC/ABS alloy material developed by Jiangsu Shangai New Material adopts macro molecular chain extender (such as styrene-acrylonitrile-methacrylate) combined with small molecule chain extender (such as isocyanate), which improves the tensile strength of the material by 20% and the impact strength is close to the level of the original material. In addition, the low stress PC/ABS alloy of Nanjing Jinshan significantly reduced the internal stress of injection molding by adding modified talc powder and glass beads, and solved the problem of easy cracking of auto parts.

2. Low VOC and antistatic function integration

The car interior is sensitive to the smell and static electricity of the material. Through the liquid injection flavor removal process, methanol/ethanol solution is injected in the extrusion process, combined with porous silicate adsorbent, the VOC emission of regenerated PC/ABS is reduced by 50%, and the odor grade meets the requirements of the main engine plant. By adding sulfonic acid antistatic agent, the surface resistance of the material is reduced to 10 ^ 8Ω·cm to meet the dust prevention demand of on-board electronic equipment.

3. Production process optimization and cost control

The scale application of regenerated PC/ABS relies on efficient processing technology. The microfoam injection molding process developed by Zhenxiong Group, combined with the double screw extruder with a length ratio of 45:1, reduces the material density by 15% and reduces the energy consumption by 20%. Shanghai Qishen's synchronous drive modification equipment improves the processing efficiency by 30% and reduces the production cost by 18% by integrating the crushing, mixing and molding modules.

2. Automotive lightweight: from "plastic for steel" to full scene penetration

The lightweight and high strength characteristics of recycled PC/ABS make it the core material of automobile lightweight, and the application scenarios expand from the interior decoration to the structural parts.

1. Interior decoration parts: the double upgrade of environmental protection and safety

Instrument panel and door panel: Audi A3, BMW i7 and other models use interior parts containing27% recycled PC/ABS, weight reduction of 25%, and through the EU ELV regulation certification.

Seat bracket: Through glass fiber enhanced modification, the bending modulus of the regenerated PC/ABS reaches 4500MPa, and the weight decreases by 40% after replacing the metal bracket.

2. External decoration and structural parts: high strength and weather resistance breakthrough

Battery protective shell: a new energy brand adopts recycled PC/ABS alloy shell, the impact resistance is improved by 30%, the high temperature resistance is up to 120°C, and 100% recyclable design is realized.

Body decoration strip: through the surface plating process, recycled PC/ABS can simulate the metal texture, the cost is 50% lower than aluminum alloy.

3. Lightweight of economic benefits

Take the mid-size sedan as an example, the recycled PC/ABS is used to replace the traditional materials, the weight of the vehicle is reduced by 80-120kg, the range is increased by 5% -8%, and the carbon emission of the whole life cycle is reduced by 15%.

3. Environmental protection-driven: policy, brand and industrial chain coordination

The global plastic ban policy and carbon neutral goal promote the regenerative PC/ABS from "optional" to "must".

1. Policy coercion and market expansion

Eu: In 2030, recycled materials will account for 25%, and the proportion of recycled PET in packaging will increase to 55%.

China: The 14th Five-Year Plan stipulates that the scale of recycled plastics industry will reach 5 trillion yuan by 2025, and a mandatory proportion of 5% of recycled materials will be set in the fields of automobiles and home appliances.

2. Brand strategy and supply chain restructuring

Car company promises: BMW "i cycle" concept car achieves 100% recyclable materials; Volvo EX 30 model center console uses 65% recycled PC/ABS.

Industrial chain cooperation: Jinfa Technology, BAIC and SAIC-GM jointly issued the group standard of "PC/ABS Alloy Special Materials for Vehicles" to promote the standardization of material performance and testing.

3. Closed-loop construction of circular economy

Chemical recovery technology: Wanhua Chemical developed biological enzymatic lysis process, decomposed the mixed waste plastic into monomers, the purity of regenerated PC/ABS reached 99%, and the cost was 30% lower than that of physical recovery.

Zero-carbon park pilot: The EU integrates recycling, modification and application links, forming a regional circulation network, with an annual treatment of 100,000 tons.

4. Challenges and the future: technology deepening and ecological cooperation

Despite the broad prospects, the regenerative PC/ABS industry still faces three core challenges:

1. Technical bottleneck

Complex waste treatment: it is difficult to separate waste plastics containing additives or coatings, so intelligent sorting and efficient cleaning technology need to be developed.

Long-term durability verification: the aging mechanism of materials in hot and humid environment is not fully clear, and the certification cycle of oEMS is 2-3 years.

2. Contradiction between cost and scale

Modification cost: high-performance chain extenders and antistatic agents account for 20% -30% of the total material cost, and the cost needs to be reduced through process optimization.

Short link of recycling system: The recycling rate of waste plastics in China is less than 30%, and it is urgent to establish a digital traceability and incentive mechanism.

3. Future technology direction

Nanoenhancement technology: carbon nanotubes can improve both electrical conductivity and mechanical properties, which is suitable for intelligent automotive parts.

AI-driven formula design: predict material performance through machine learning, shortening the development cycle by more than 50%.

5. Conclusion: Green materials will reshape the future of the automobile industry

The innovation technology breakthrough of regenerative PC/ABS is not only a material revolution, but also the core engine of the transformation of the automobile industry to sustainable development. From molecular chain repair to the coordination of the whole industrial chain, from lightweight carbon reduction to circular economy closed loop, the evolution path of this material reveals the integration of industrial civilization and ecological civilization. In the future, with the deepening of policies, technological innovation and the awakening of consumer awareness, regenerative PC/ABS will promote the automobile industry towards a new era of "zero-carbon manufacturing", and write a strong mark for the global sustainable development.