Dexco Vector 4411 Equivalent Thermoplastic Elastomer SIS Rubber

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SIS Rubber, Styrene Isoprene Rubber, Styrene Isoprene Styrene

Exploring the Versatility of SIS (Styrene-Isoprene-Styrene) Block Copolymer

Introduction: SIS, or Styrene-Isoprene-Styrene, block copolymer stands as a high-performance thermoplastic elastomer renowned for its unique combination of attributes. With a balance of high strength, low hardness, and low viscosity, SIS polymers offer exceptional versatility in various applications. Derived from styrene and isoprene, these polymers exhibit superior performance and eco-friendly properties, making them indispensable in industries ranging from adhesive manufacturing to asphalt modification.

Features:

SIS polymers emulate the properties of vulcanized rubber without the need for vulcanization, providing manufacturers with enhanced flexibility and efficiency in processing. Their superior thermal stability and adhesion further contribute to their appeal in diverse applications. Notably, SIS is environmentally friendly, non-toxic, and recyclable, aligning with modern sustainability goals. Additionally, the use of solvents is generally unnecessary, streamlining production processes and minimizing environmental impact.

Item	Grade and Typical Value
Item	HC-9151	HC-9152	HC-9153	HC-9161	HC-9162	HC-9163	HC-9220	HC-9291	HC-9325	HC-9360	HC-9600
Structure	Line	Line	Line	Line	Line	Line	Line	Line	Line	Hybrid	Line
Polystyrene Content, wt%	15	16	15	16	16	15	25	29	25	14	42
Diblock Content, wt%	<1	16.5	20	50	50	40	25	18	25	12	<1
Melt Flow Rate g/10min（200℃/5kg）	10	10	15	12	20	25	27	10	14	10	40
25%Toluene Solution Viscosity mPa.s	1500	1100	1000	880	700	800	260	350	300	1500	120
Ash %	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.1	0.05
Volatile Matter, wt%	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.4
Density	0.93	0.925	0.92	0.92	0.92	0.92	0.93	0.94	0.93	0.93	0.95
Tensile Strength ,ASTM D412, Mpa	25	20	18	12	8	8	10	29	8	21	20
Elongation At Break, %	≥1100	1250	1500	1400	1380	1300	1050	1000	1150	1150	820
Shore Hardness, ASTM D2240, Shore A	40	35	32	25	20	25	35	62	36	36	75

Applications:

The versatility of SIS polymers finds expression across a wide spectrum of industries and applications. They are particularly well-suited for formulating pressure-sensitive adhesives, including packaging tape, labels, and medical adhesives. Furthermore, SIS polymers play a pivotal role in hot-melt adhesive formulations, offering excellent bonding properties and thermal resistance.

In the realm of plastics and asphalt modification, SIS polymers contribute to enhancing material properties such as flexibility, durability, and weather resistance. Their compatibility with various substrates makes them valuable additives in the production of hygiene products, packaging materials, and elastic films.

A notable application of SIS polymers is in the development of hot melt Polyisobutene-SIS copolymer pressure-sensitive adhesives for skin contact applications. Leveraging the inherent properties of polyisobutylenes and styrene-isoprene rubbers, these adhesives offer exceptional adhesion to skin and substrates, along with good water resistance. Despite their staining potential and relatively poor recovery from extension, these adhesives provide a reliable solution for medical tapes, transdermal systems, and other skin-contact applications.

Conclusion:

In conclusion, SIS (Styrene-Isoprene-Styrene) block copolymers represent a versatile and environmentally friendly solution for a wide range of applications. With their unique combination of properties, including high strength, low hardness, and superior adhesion, SIS polymers continue to drive innovation across industries such as adhesive manufacturing, plastics modification, and hygiene product development. As sustainability and performance become increasingly important considerations, SIS polymers stand poised to meet the evolving needs of modern manufacturing and consumer demands.

Wide Application of Our Masterbatches

Our masterbatches find a multitude of applications across diverse industries. Whether in plastics, textiles, or various manufacturing processes, our masterbatches play a pivotal role in enhancing product quality and performance. With customizable formulations, they offer color consistency, UV protection, flame resistance, and more, making them the go-to solution for countless applications. From automotive parts to packaging materials, our masterbatches are the trusted choice for achieving superior results across a wide spectrum of industries.

Textile

Automative

Cosmetics & Toiletries

Medical

Consumer Electronics

Food and Drink

Household

Pet Care

Cosmetics & Toiletries

High Compatibility oF Our Masterbatch

Our custom masterbatches are designed to match specific polymers, ensuring optimal performance when incorporated into your selected material. We have the capability to produce masterbatches suitable for a variety of polymers mentioned below, and many more. If you’re working with a material that isn’t listed here, please don’t hesitate to reach out to our knowledgeable technical team to explore the possibility of meeting your specific needs.

LDPE

Low Density Polyethylene – Somewhat more translucent than HDPE and considerably more pliable, primarily employed in flexible packaging, tote bags, pliable tubing, film applications, and similar uses. Like HDPE, it has limited transparency characteristics. It exhibits outstanding chemical resistance to alcohols, acids, and alkalis but has restricted resistance to hydrocarbon solvents and mineral oils. Prolonged exposure to UV radiation can initiate degradation.

HDPE

High-Density Polyethylene – Featuring a somewhat milky-white appearance, this material finds wide application in rigid bottle packaging, injection-molded caps and closures, crates, and more. Its natural opacity can limit the degree of transparency attainable. HDPE exhibits superior chemical and solvent resistance when compared to LDPE.

PPHO / PPCO

PPCO Random & PPHO – A polymer with moderate clarity, employed in the production of caps and closures. It is also utilized for crafting household items, buckets, toys, and storage containers. Polypropylene offers flexibility without significant limitations on color or special effects. Random copolymer boasts greater clarity compared to homopolymer and is better suited for creating translucent shades.

PPCO Block – Similar to PPCO but enhanced for increased impact resistance. An additive renders the polymer white, resulting in high opacity. This characteristic may limit the achievable transparency.

PET

Polyethylene Terephthalate (PET) – Polyester materials exhibit robust mechanical strength along with excellent chemical resistance and barrier properties. PET is frequently chosen for the production of carbonated beverage containers. Moreover, polyester can be spun and employed in textile manufacturing for clothing. PET is highly transparent, making it an excellent choice for translucent packaging, although a subtle hint of “yellowing” may impact extremely light tints.

PBT

Polybutylene Terephthalate – A crystalline thermoplastic engineering polymer frequently employed as an insulating material within the electronics sector. This substance belongs to the polyester category, showcasing a remarkable equilibrium of attributes and processing qualities.

GPPS

General Purpose Polystyrene – Exhibiting a glass-clear appearance but possessing minimal impact resistance, this material finds its primary application in CD cases. Its notable clarity renders it suitable for creating translucent hues, although an occasional violet tint may be discernible.

HIPS

High Impact Polystyrene – Derived from GPPS by incorporating an impact-enhancing agent to boost its resistance to impacts. This added component results in the polymer becoming white, and different formulations provide varying degrees of opacity. Typically employed in the fabrication of game pieces, toys, and similar items. Its pronounced whiteness can pose challenges when aiming for translucent coloration. Specialized alternatives like K-Resin and Styrolux are accessible in the market to attain the same level of translucency as GPPS.

ABS

Acrylonitrile Butadiene Styrene (ABS) – A more robust iteration of High Impact Polystyrene (HIPS) employed in high-value components. ABS exhibits greater durability compared to HIPS-made components, although it encounters similar challenges when attempting to achieve translucent colorations. Just like HIPS, ABS offers specialized translucent variants. Owing to its durability, ABS is commonly used in crafting casings for power tools.

PA66 / PA6

Polyamide (6, 66) – Nylon represents a versatile grade extensively employed in mechanical construction and maintenance. Its popularity stems from its excellent blend of mechanical strength, rigidity, mechanical damping characteristics, and effective electrical insulation capabilities. Consequently, nylon is a preferred material for manufacturing electrical enclosures. PA66 serves as a common alternative to metal across diverse applications, with its chemical and physical attributes closely resembling those of PA6. PA6 exhibits superior impact resistance and resistance to solvents, albeit with a heightened susceptibility to moisture absorption.

SAN

Styrene Acrylonitrile Copolymer – Possessing transparency and outstanding chemical and heat resistance, SAN also boasts good rigidity, tensile strength, and flexural strength. Thanks to its high-gloss finish, SAN is commonly chosen for cosmetic packaging purposes. However, achieving light tint colors with SAN can be challenging due to the violet dyestuffs inherent in the material, which are utilized to enhance its visual appearance during manufacturing.

PETG

Polyethylene Terephthalate Glycol – PET with the incorporation of glycol. This glycol addition enhances flow properties but diminishes strength. PETG can be extruded to create bottles and can be formed into sheets for producing ‘blister’ style packaging.

TPE / TPU

Thermoplastic Elastomer (TPE) or Thermoplastic Polyurethane (TPU) – TPU finds diverse uses in applications such as automotive instrument panels, caster wheels, power tools, medical devices, as well as various extruded film, sheet, and profile applications. TPEs are employed across a wide range of applications in industries spanning automotive, medical, construction, electrical, appliances, packaging, and industrial sectors.