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China Styrene-Ethylene/Butylene Block Copolymer Suppliers | Reliable Factory Production for Quality Materials
| Styrene-Ethylene/Butylene block copolymer | |||
| CATEGORIES | GRADE | APPLICATION | OPERATIONS |
|---|---|---|---|
| SEBS | LCY 7550 | Adhesives Asphalt modification Compounding |
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| SEBS | LCY 7551 | Adhesives Asphalt modification Compounding |
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| SEBS | LCY 7554 | Adhesives Asphalt modification Compounding |
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| SEBS | CH510 | Compounding | Inquiry |
| SEBS | CH520 | Compounding | Inquiry |
| SEBS | CH540 | Compounding | Inquiry |
| SEBS | YH-501T | Adhesives Coating Compounding |
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| SEBS | YH-502T | Adhesives Coating Compounding |
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| SEBS | YH-503T | Adhesives Coating Compounding |
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| SEBS | YH-504T | Adhesives Coating Compounding |
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| SEBS | YH-602T | Compounding | Inquiry |
| SEBS | YH-604T | Compounding | Inquiry |
Material Characteristics
This product is a linear, transparent block copolymer of the Styrene-Ethylene/Butylene-Styrene (SEBS) type. Its molecular structure is engineered to deliver a high-performance profile, characterized by the following key properties:
(1) Excellent Weathering and Heat Resistance
The saturated mid-block (ethylene/butylene) provides outstanding resistance to degradation from ozone, oxygen, and UV radiation, ensuring long-term stability in outdoor applications. It also maintains its properties at elevated temperatures, offering good heat resistance.
(2) High Mechanical Strength
The material exhibits remarkable tensile strength, tear resistance, and abrasion resistance, resulting in durable and long-lasting end-products.
(3) Good Compatibility with Plastics
It demonstrates excellent compatibility with a wide range of engineering thermoplastics, such as polypropylene (PP) and polystyrene (PS), facilitating easy blending for the creation of polymer alloys with enhanced characteristics.
(4) Clarity and Flexibility
The linear structure contributes to its transparency, while simultaneously providing high elasticity and excellent low-temperature flexibility.
Material Application
Owing to its robust set of properties, this SEBS copolymer serves as a versatile modifier and base polymer across diverse industries. Its primary applications include:
(1) Plastic Modification
Used as an impact modifier and flexibilizer for rigid plastics, significantly improving toughness and soft-touch feel without sacrificing processability.
(2) Adhesives
Serves as a key component in formulating high-performance, permanent hot-melt adhesives (HMAs) and sealants, providing strong cohesion and UV-stable bonding.
(3) Compounding for Modification
Acts as a foundational material for producing customized thermoplastic elastomer (TPE) compounds tailored to specific hardness, color, and performance requirements.
(4) Toys and Consumer Goods
Ideal for manufacturing safe, durable, and soft-touch items such as toys, grips, and handles.
(5) Asphalt Modification
Enhances the flexibility, elasticity, and durability of asphalt binders used in roofing and paving applications.
Frequently Asked Questions (FAQ)
What is Styrene-Ethylene/Butylene Block Copolymer (SEBS)?
SEBS is a linear, transparent thermoplastic elastomer block copolymer produced by hydrogenating Styrene-Butadiene-Styrene (SBS). This hydrogenation process eliminates double bonds, providing the polymer with exceptional thermal stability, UV resistance, and mechanical strength.
What are the primary differences between LCY and YH SEBS grades?
LCY and YH grades represent different manufacturers and specific formulations tailored for target applications. For instance, LCY grades (like LCY 7550/7551) are highly optimized for adhesives and asphalt modification, while YH grades (such as YH-501T/502T) are often preferred for high-clarity coatings and precision compounding.
Why does SEBS have superior weathering resistance compared to SBS?
Unlike SBS, which contains unsaturated carbon-carbon double bonds in its butadiene mid-block, the ethylene/butylene mid-block in SEBS is completely saturated. This molecular structure prevents ozone, oxygen, and UV radiation from degrading the polymer chain, ensuring long-term outdoor durability.
Can SEBS be recycled and blended with other plastics?
Yes, SEBS is 100% recyclable as a thermoplastic elastomer. It exhibits excellent compatibility with polyolefins like polypropylene (PP) and polystyrene (PS), making it a highly effective impact modifier and compatibilizer for custom polymer blends.
Are these SEBS grades suitable for medical or food-contact consumer goods?
Many SEBS grades are non-toxic, skin-friendly, and free of plasticizers like phthalates, making them ideal for toys, consumer goods handles, and medical devices. However, you should check the technical data sheet of the specific grade (such as CH510 or YH-602T) to confirm regulatory compliance for sensitive applications.
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