Technology and Applications of SBS-based Adhesives

SBS refers to styrene-butadiene-styrene triblock copolymer. It is a type of thermoplastic elastomer, generally called “thermoplastic styrene-butadiene rubber” and well-known as “the third generation of synthetic rubber”. SBS has both plastic and rubbery properties, showing plasticity at high temperature and elasticity at room temperature. It exhibits properties of thermoplastics without plasticating and properties of vulcanized rubber without vulcanization.

SBS has many advantages such as excellent solubility, the ability to melt at high temperature, low melt viscosity, ease of modification, and good compatibility with a lot of polymers. Thus, it is widely applied in the building decoration, printing and laminating, pressure-sensitive adhesives, woodwork, bags and suitcases, footwear, and other industries.

Currently, the type of building decorative adhesives mainly includes neoprene adhesives and SBS-based adhesives. Due to structural characteristics, SBS-based adhesives are inferior to neoprene adhesives in initial adhesion, bond strength (especially when bonding to polar materials), tack time, heat and weather resistance, and other aspects. This greatly restricts the use of SBS-based adhesives in the building decoration application.

The lack of polar groups in SBS macromolecules results in the failure of SBS-based adhesives to perfectly bond to polar substrates such as aluminum-plastic panels, fireproof boards, PVC panels. There are a lot of researches globally conducted on grafting modification, epoxidation and other aspects of SBS-based adhesives, to improve their bonding properties. However, this will undoubtedly require the increasing investment and industrial costs of adhesive manufacturers, and is difficult to put into operation because of the complicated technique.

 

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SEBS Polymer 501T – Styrene Ethylene Butylene Styrene Block Copolymer

DESCRIPTION

Thermoplastic elastomer SEBS polymer 501T is a low-molecular weight, linar Styrene Ethylene Butylene Styrene Block Copolymer . It can be applied to hot melt adhesive (pressure-sensitive adhesive), plastic modification and so on due to its good fluidity and low melt viscosity.

SEBS polumer 506

 

APPLICATION

Adhesive / Coating / Plastic modification

 SEBS 501T

 

CHEMICAL PROPERTIES

Structure: L

Styrene Content (%): 30

Solution Viscosity  (20%,25℃,mPa.s) : 400-800

Volatility  (%): ≤1

Shore A  (/): ≥68

Tensile Strength  (Mpa) : ≥16

Elongatin  (%): ≥450

Stress at 300%  (Mpa) :  ≥3

 

FORMULA

Sealant (Parts by mass)

SEBS polymer(YH-501T): 100

C5 Resin : 100 – 180

Maleic Anhydride Modified Poly Butylene : 50 – 100

Naphthenic Oil : 100 – 300

Toluene:Ethyl Acetate (1:1) : 60 – 150

 

ALTERNATIVE GRADES

Kraton 1652

Taipol 6152

 

MANUFACTURE

Sinopec

 

Any feedback: BEC@becmaterials.com

 

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BECmaterials

Global Automotive Adhesives Market to Reach $6.05 Billion by 2021

Global Automotive Adhesives Market to Reach $6.05 Billion by 2021

The global automotive adhesives market is expected to reach $6.05 billion by 2021, witnessing a CAGR of 8.5% from 2016 to 2021, according to a recent report from Research and Markets titled “Automotive Adhesives Market by Resin Type (Polyurethane, Epoxy, Acrylic, Silicone, SMP, Polyamide), Application (Body-in-White, Paint Shop, Powertrain, Assembly), Vehicle Type (Buses, Trucks, LCV), and Region – Global Forecast to 2021”.

The trend of making lightweight and fuel-efficient vehicles is now encouraging the use of aluminum and other materials to reduce the weight of vehicles, which is driving the use of adhesives in automobiles. Moreover, the rising average adhesive volume use per vehicle across the Asia-Pacific, South American, and Middle East and African markets is anticipated to propel the overall demand for automotive adhesives during the forecast period. However, volatility in raw material prices and regulations restricting the use of hazardous chemicals are the major restraints to the growth of the market.

Automotive adhesives are used in various applications. Body in white application accounted for the largest volume share of the global automotive adhesives market in 2015. Better toughness, enhanced strength and reduced weight are all achieved using automotive adhesives in body in white. The assembly application segment is expected to grow at the highest CAGR from 2016 to 2021 in all applications considered. The growth in assembly application mainly results from the need for weight reduction and joining different substrates.

Passenger cars segment is the dominant segment among all vehicle types in the global automotive adhesives market, and is projected to grow at the fastest CAGR by 2021. The increasing sales of passenger cars is propelled by the improved spending ability in countries such as India, China and Brazil. The per capita income in these countries has shown significant growth and it is expected to follow the same trend during the forecast period.

Asia-Pacific is the fastest growing market for automotive adhesives, in terms of both value and volume. High economic growth rate, growing purchasing power, developing infrastructure, growing demand from end-use industries, and global shift in production capacity from developed markets to emerging markets are the major drivers for the growth of the automotive adhesives market in this region. China has led the automotive adhesives demand in this region owing to the increased production of vehicles in recent years. China is also the largest consumer of automotive adhesive around the globe.

 

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