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GLOBALPRENE, a styrene-based polymer also known as styrenic block copolymer (SBC), is a type of thermoplastic elastomers (TPE) produced by LCY, the world’s leading TPE material supplier. Crafted from styrene-butadiene or styrene-isoprene, SBC products have a wide range of applications.
Hot-melt pressure-sensitive adhesives can form a coating in the molten state and bond rapidly under light pressure after cooling. It can be easily removed without contaminating the surface of the adhered substrate. Hot-melt pressure-sensitive adhesives consist mainly of a thermoplastic elastomers (TPE, e.g. SEBS, SBS, SIS), tackifier, antioxidant, and filler. Incorporating saturated TPEs such as SEBS and SEPS, derived from the hydrogenation of SBS or SIS, into hot-melt pressure-sensitive adhesives enhances their resistance to oxidation, UV radiation, and heat, improving overall weather resistance. Thermoplastic elastomers can also be used to produce solvent-based adhesives with lower viscosity,good tack ,holding power and balanced adhesion performance
The use of thermoplastic elastomers(TPE) to modify conventional asphalt can extend its service temperature, improve its mechanical properties, increase the cold temperature flexibility of the asphalt, and improve its aging performance. When used in asphalt modification, in combination with the proper asphalt mix, can improve road safety by increasing the road's load-bearing capacity. When used in roofing and waterproofing applications, TPE-modified asphalt bonds better to the structure durable and better heat resistance to help reduce the high cost of maintenance and repair.
TPE is commonly used to toughen engineering plastics. TPE-modified plastics have improved impact strength and low-temperature resistance.TPE can be applied in film application, has increased impact strength, improved gas barrier properties and is widely used in food and beverage packages. Adding a compatibilizer and polar plastic to TPE improves the compatibility of TPE with dissimilar materials. For example, the addition of maleic anhydride (MAH) grafted SEBS and TPU, can use in over-molding ,nylon modifciation and plastics compounding.
SEBS has good compatibility with PP and PE,good for PP/PE modifciation. Grafted SEBS is mainly used in the modification of engineering plastics such as polyamide (PA), ABS, polycarbonate (PC) and PET to increase the toughness of the material. It is also used as a compatibilizer in the modification of engineering plastics to improve the miscibility between materials. The addition of even a small amount of grafted SEBS significantly improves the toughness of engineering plastics and increases their impact strength. The combination of grafted SEBS with other SEBS polymers results in stable copolymers with excellent oxidation and UV resistance.
SBS is widely utilized in TPR shoe soles, offering a versatile alternative to vulcanized rubber and polyvinyl chloride shoe materials. Known for its outstanding elasticity, vibrant color options, effective anti-slip properties, and durability against wear, SBS shoe soles also boast excellent flexing endurance and low-temperature resistance. Compared to other materials, SBS shoe soles exhibit significantly higher friction coefficients on both asphalt and wet surfaces. Additionally, SBS is environmentally friendly, as waste shoe soles can be recycled and reprocessed. Available at moderate prices, SBS shoe soles come in various styles, including original color designs, colorful dual-color options.
How should LCY SIS grades be selected based on Styrene Content?
The styrene content in LCY SIS determines the material’s hardness and adhesive cohesive strength. Lower styrene content is suitable for soft, high-tack applications, while higher styrene content improves cohesion and heat resistance, influencing the processing and end‑use performance. When an application requires adhesives to maintain holding power (shear resistance) under elevated temperatures, SIS grades with higher styrene content are recommended to enhance the stability of physical crosslinking points and prevent adhesive failure or bleeding.
What are the processing differences between the Linear and Radial structures of LCY SBS‑NOE?
LCY SBS‑NOE linear and radial structures differ in melt viscosity, dissolution rate, and material support. Linear grades, with lower viscosity and faster dissolution, are suitable for equipment with limited shear capability or processes requiring rapid mixing. Radial grades provide stronger structural support and heat resistance, making them more suitable for high‑filler formulations or industrial applications requiring enhanced mechanical strength.
What are the main applications and characteristics of LCY GLOBALPRENE™ SEP 8501U?
SEP 8501U, with its unique diblock structure and higher styrene content, can function as a thickening agent for various base oils or solvents. It is widely used in optical‑fiber filling gels, cosmetic oil gels, automotive lubricants, and as a processing aid in plastic modification formulations. In fluid applications, the polystyrene blocks form reversible aggregates that provide excellent shear‑thinning properties—ensuring easy coating and filling under high‑shear processing, while maintaining high viscosity and anti‑drip stability under low‑shear or static conditions.
At the same time, when used as a processing aid in plastic modification formulations, this structure enhances melt flowability while also improving toughness. In engineering plastics with higher polarity, such as PPE/PPO, PPS, and PBT, SEP 8501U exhibits favorable compatibility, effectively balancing the material’s rigidity and impact strength and reducing the risk of significant performance degradation.
What technical advantages does LCY SEBS offer for personal hygiene and medical applications?
LCY SEBS provides biocompatibility suited for these application scenarios and delivers excellent elastic soft‑touch performance without allergenic substances, making it suitable for personal hygiene and medical‑related products. It is widely used in elastic waistbands of adult diapers and sanitary napkins, as well as medical‑grade tubing. Its ability to be processed without vulcanization helps improve production efficiency and ensures product cleanliness while meeting relevant hygiene and medical regulatory requirements.
Do LCY SIS (Styrene–Isoprene–Styrene) products comply with regulations for food packaging or medical devices?
LCY offers specific grades of SIS products that comply with multiple international standards, including FDA CFR 21 §177.1810, REACH, and RoHS, and are suitable for applications such as pressure‑sensitive adhesives and food‑contact materials. These specifications are strictly controlled during production to ensure low impurity levels and high purity, minimizing the risk of potential contamination or odor in end products. Antioxidants, stabilizers, or functional additives with no hazardous properties or compliant with regulatory concentration limits are selected based on product design requirements.
For applications involving precision medical devices or infant products, regulatory definitions and testing requirements may vary depending on the intended use. It is recommended to consult with the technical team to confirm the specific test reports, regulatory compliance, and use conditions for each grade.
Why is LCY SEBS suitable for children’s toys and infant products?
LCY SEBS features high purity and low migration, and complies with international safety standards such as EN71‑3 and FDA CFR 21 §177.1810. The molecular structure of SEBS contains no phthalates (plasticizers) or heavy metals, allowing the material to achieve the desired softness without the need for harmful chemical additives during production. This structural stability ensures that products will not release harmful substances when chewed by children or in contact with skin. Combined with its excellent hypoallergenic properties, SEBS is considered an ideal environmentally friendly alternative to traditional soft PVC.
LCY SEBS offers high purity and low migration and complies with international safety standards including EN71‑3 and FDA CFR 21 §177.1810, making it suitable for children's toys and infant‑related applications. The molecular structure of SEBS contains no phthalates (plasticizers) or heavy metals, and requires no additional harmful additives during processing to provide the required soft‑touch feel. Its material stability helps reduce the risk of substance migration, making it suitable for applications involving chewing or prolonged skin contact. Together with its hypoallergenic characteristics, SEBS is often regarded as one of the preferred alternatives to traditional soft PVC.
