Rubber made of ethylene propylene diene monomer, or EPDM, is a versatile polymer that has good thermal stability, chemical compatibility, and weather resistance. The method of grafting EPDM with maleic anhydride modifies it and confers various benefits on its mechanical characteristics. The objective of this article is to present a thorough and in-depth analysis of the benefits that result from grafting maleic anhydride onto EPDM, emphasizing the influence on different mechanical properties.

Improved Tensile Strength and Elongation at Break

When compared to unmodified EPDM, EPDM grafted with maleic anhydride shows better tensile strength and elongation at break. By adding more cross-linking spots between polymer chains, the grafting procedure improves the polymer’s ability to withstand load and deformation.

Enhanced Tear Resistance

EPDM’s tear resistance is increased when maleic anhydride is grafted onto it. By creating a denser network structure, the upgraded EPDM increases its resistance to tearing pressures and hinders the spread of cracks.

Greater Flexibility and Low-Temperature Performance

Maleic anhydride grafted EPDM exhibits better low-temperature performance and flexibility. By adding polar functional groups, the grafting modification reduces the material’s glass transition temperature (Tg) and keeps its flexibility and elastomeric qualities even at lower temperatures.

Enhanced Abrasion Resistance

Maleic anhydride grafted EPDM exhibits enhanced abrasion resistance. By strengthening the intermolecular connections within the polymer matrix, the grafting process produces a more compact structure that is resistant to frictional forces and surface wear.

Impact Resistance and Resilience

Maleic anhydride is grafted onto EPDM to increase its resilience and impact resistance. Because the modified EPDM has a greater capacity to absorb and release energy upon impact, it can be used in applications where impact resistance is necessary, including industrial gaskets and automobile components.

Better Adhesion Properties

Maleic anhydride grafted EPDM has better adhesion characteristics. Better adhesion and less interface failure are the outcomes of the grafting modification, which adds functional groups to improve the interfacial bonding between EPDM and other materials.

Increased Fatigue Resistance

Maleic anhydride grafted EPDM exhibits increased fatigue resistance. By strengthening the material’s resistance to cyclic loading and repetitive stress, the grafting procedure extends its longevity and lowers the chance of fatigue failure.

Retained Weatherability

Maleic anhydride grafted EPDM maintains its superior weather resistance. Because the grafting change doesn’t affect EPDM’s intrinsic qualities, it can continue to withstand UV rays, ozone, and other environmental variables.

Better Processability

During the production process, EPDM that has been grafted with maleic anhydride shows better processability. The grafting alteration facilitates simpler handling and shaping of the material into complex shapes by improving the melt flow behavior and shortening processing time.

環境面でのメリット

Maleic anhydride grafted EPDM has positive effects on the environment. The material’s enhanced mechanical qualities and resilience prolong its service life, which lowers the need for frequent replacements and reduces waste production.

In summary, the mechanical properties of EPDM grafted with maleic anhydride present a number of benefits. The EPDM’s grafting alteration improves its tensile strength, fatigue resistance, adhesive qualities, tear resistance, flexibility, low-temperature performance, and abrasion resistance. Because of these enhancements, EPDM grafted with maleic anhydride is now a highly sought-after material in a variety of industries where improved mechanical performance and durability are crucial, such as the automotive and construction sectors.

コエースは、10年以上にわたってポリマー素材を研究開発してきた有名な企業である。10人以上の科学専門家が在籍し、顧客一人ひとりのニーズに合わせた専門的なプラスチック改質サービスを提供している。8つの反応押出ラインや定評あるドイツメーカーの特別設計の機械など、近代的な生産設備は、コーエースの主な強みのひとつである。これらのリソースを活用することで、コーエースは、最も厳しい要件をも満たす高品質のポリマー素材を、効率的かつ効果的に製造することができるのです。生産最適化、材料選択、製品設計など、お客様が抱えるあらゆる問題に対応できる知識とリソースを、コーエースは有しています。