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SBR Rubber

Styrene-butadiene rubber, also known as SBR rubber, is a type of synthetic rubber made from styrene and butadiene. SBR is a good choice for a general purpose rubber.

Properties of SBR

Abrasion Resistance
SBR rubber is highly resistant to abrasion, making it ideal for use in tire treads, conveyor belts, and other applications that require high durability.
Good Aging Stability
SBR rubber can withstand exposure to sunlight, heat, and other environmental factors without deteriorating quickly, making it suitable for outdoor applications.
Low Cost
SBR rubber is less expensive compared to other synthetic rubbers, making it a popular choice for applications where cost is a significant consideration.
Good Tear Resistance
SBR rubber has good tear resistance, which makes it suitable for applications that require high strength and durability.
High Elasticity
SBR rubber has high elasticity, which means it can return to its original shape after being stretched or deformed.
Good Electrical Insulation Properties
SBR rubber has good electrical insulation properties, making it suitable for use in electrical applications such as wire and cable insulation.
Resistance To Water And Chemicals
SBR rubber is resistant to water, acids, and other chemicals, making it suitable for use in applications that involve exposure to these substances.

Pros:

  • Good abrasion resistance
  • Good tensile strength
  • Good flexibility
  • Good resistance to water and air
  • Low cost compared to other synthetic rubbers
  • Good adhesion to metals and other substrates

Cons:

  • Poor resistance to heat and chemicals
  • Limited temperature range (-40°C to 100°C)
  • Low resistance to oils and solvents
  • Limited ozone resistance
  • Inferior weathering resistance compared to other rubbers

SBR rubber is a versatile and cost-effective material. Its good abrasion resistance, tensile strength, and flexibility make it a popular choice for applications such as tires, conveyor belts, and hoses. However, its poor resistance to heat and chemicals, limited temperature range, low resistance to oils and solvents, and limited ozone and weathering resistance make it less suitable for certain applications.

SBR vs. EPDM

Chemical Resistance
EPDM rubber has better chemical resistance than SBR rubber. EPDM is resistant to acids, alkalis, and polar solvents, while SBR has limited resistance to chemicals and is not recommended for use with oils and solvents.
Weather Resistance
EPDM rubber has superior weather resistance than SBR rubber. EPDM can withstand exposure to UV radiation, ozone, and extreme temperatures better than SBR.
Cost
SBR rubber is less expensive than EPDM rubber, making it a popular choice for applications where cost is a significant factor.
Mechanical Properties
SBR rubber has better abrasion resistance and tensile strength than EPDM rubber, making it a popular choice for applications that require good mechanical properties.
Electrical Properties
EPDM rubber has better electrical insulation properties than SBR rubber, making it suitable for electrical and electronic applications.

EPDM rubber is a better choice for applications that require good chemical and weather resistance, while SBR rubber is a better choice for applications that require good mechanical properties at a lower cost.

SBR vs. NBR (Nitrile)

Chemical Resistance
NBR rubber has better resistance to oils, fuels, and other chemicals than SBR rubber. SBR rubber is not recommended for use with oils and solvents.
Temperature Range
NBR rubber has better heat resistance than SBR rubber. NBR can withstand temperatures up to 120°C, while SBR has a limited temperature range of -40°C to 100°C.
Compression Set
NBR rubber has better compression set resistance than SBR rubber, meaning it can better retain its shape after being compressed.
Abrasion Resistance
SBR rubber generally has slightly better abrasion resistance than NBR rubber, but both rubbers have excellent abrasion resistance.
Cost
SBR rubber is less expensive than NBR rubber, making it a popular choice for applications where cost is a significant factor.

NBR rubber is a better choice for applications that require good abrasion resistance, as well as resistance to oils, fuels, and other chemicals, and higher temperature resistance. SBR rubber is a better choice for applications that require good abrasion resistance and mechanical properties at a lower cost.

SBR vs. NR (Natural)

Origin
NR is a natural rubber obtained from the latex of rubber trees, while SBR is a synthetic rubber made from petroleum-based raw materials.
Tensile Strength
NR has higher tensile strength than SBR rubber, making it a popular choice for applications that require good mechanical properties.
Abrasion Resistance
SBR rubber has better abrasion resistance than NR rubber, although NR has better tear resistance.
Chemical Resistance
NR has better chemical resistance than SBR rubber, making it more suitable for applications that require good resistance to acids, alkalis, and other chemicals.
Weather Resistance
NR has better weathering resistance than SBR rubber, making it more suitable for outdoor applications that require good resistance to UV radiation, ozone, and other environmental factors.
Cost
SBR rubber is less expensive than NR rubber, making it a popular choice for applications where cost is a significant factor.

NR rubber is a better choice for applications that require good tensile strength, chemical resistance, and weathering resistance. SBR rubber is a better choice for applications that require good abrasion resistance and mechanical properties at a lower cost.

SBR vs. CR (Neoprene)

Chemical Resistance
CR rubber has better resistance to oils, fuels, and other chemicals than SBR rubber. SBR rubber is not recommended for use with oils and solvents.
Temperature Range
CR rubber has better temperature resistance than SBR rubber. CR can withstand temperatures up to 120°C, while SBR has a limited temperature range of -40°C to 100°C.
Weather Resistance
CR rubber has better weathering resistance than SBR rubber, making it more suitable for outdoor applications that require good resistance to UV radiation, ozone, and other environmental factors.
Flame Retardancy
CR rubber is inherently flame-retardant, while SBR rubber is not.
Cost
SBR rubber is less expensive than CR rubber, making it a popular choice for applications where cost is a significant factor.

CR rubber is a better choice for applications that require good resistance to oils, fuels, chemicals, and weathering, as well as flame retardancy. SBR rubber is a better choice for applications that require good mechanical properties at a lower cost.

SBR vs FKM (Viton)

Chemical Resistance
FKM rubber has excellent chemical resistance, particularly to acids, alkalis, and oils. SBR rubber is not recommended for use with oils and solvents.
Temperature Range
FKM rubber has a higher temperature range than SBR rubber. FKM can withstand temperatures up to 250°C, while SBR has a limited temperature range of -40°C to 100°C.
Weather Resistance
FKM rubber has better weathering resistance than SBR rubber, making it more suitable for outdoor applications that require good resistance to UV radiation, ozone, and other environmental factors.
Compression Set
FKM rubber has lower compression set than SBR rubber, which means it can maintain its shape better over time and under pressure.
Cost
FKM rubber is more expensive than SBR rubber, making it a less cost-effective choice for some applications.

FKM rubber is a better choice for applications that require excellent chemical resistance, temperature resistance, and weathering resistance, as well as low compression set. SBR rubber is a better choice for applications that require good mechanical properties at a lower cost.

SBR vs MQ (Silicone)

Chemical Structure
MQ rubber has excellent chemical resistance, particularly to oils, fuels, and chemicals. SBR rubber is not recommended for use with oils and solvents.
Temperature Range
MQ rubber has a higher temperature range than SBR rubber. MQ can withstand temperatures up to 200°C, while SBR has a limited temperature range of -40°C to 100°C.
Compression Set
MQ rubber has lower compression set than SBR rubber, which means it can maintain its shape better over time and under pressure.
Weather Resistance
MQ rubber has good weathering resistance, but it may not be as effective as SBR rubber in outdoor applications that require good resistance to UV radiation, ozone, and other environmental factors.
Cost
SBR rubber is less expensive than MQ rubber, making it a more cost-effective choice for some applications.

MQ rubber is a better choice for applications that require excellent chemical resistance, temperature resistance, and low compression set. SBR rubber is a better choice for applications that require good mechanical properties at a lower cost.

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