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MQ Rubber

MQ rubber (Methyl Vinyl Silicone Rubber) is a type of synthetic rubber that is characterized by its excellent resistance to high and low temperatures, ozone, weathering, and aging. Some of the key properties of MQ rubber include:

Low-temperature Flexibility
MQ rubber remains flexible at low temperatures, making it ideal for use in low-temperature applications.
Electrical Insulation Properties
MQ rubber has excellent electrical insulation properties, making it useful in electrical and electronic applications.
Weathering And Ozone Resistance
MQ rubber has excellent resistance to weathering and ozone, making it suitable for outdoor applications.
Chemical Resistance
MQ rubber is resistant to a wide range of chemicals, including acids, alkalis, and some solvents.
Temperature Resistance
MQ rubber has excellent high and low-temperature resistance. It can withstand temperatures as low as -60°C and as high as 200°C without significant loss of properties.
Good Compression Set
MQ rubber has a low compression set, meaning it can maintain its shape and properties even after being compressed for a long time.

Pros:

  • Excellent resistance to high and low temperatures
  • Good low-temperature flexibility
  • Excellent electrical insulation properties
  • Resistant to weathering and ozone
  • Good resistance to some chemicals
  • Low compression set, meaning it can maintain its shape and properties over time

Cons:

  • Not suitable for high-temperature applications above 200°C
  • Not as chemically resistant as some other rubbers, such as FKM rubber
  • More expensive than some other types of rubber
  • Can be difficult to process and fabricate, especially compared to some other rubbers
  • Not recommended for use with high-pressure steam applications

MQ (Silicone) vs. SBR

Chemical Resistance
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.

MQ (Silicone) vs. EPDM

Temperature Range
EPDM rubber can withstand a wider range of temperatures than MQ rubber. EPDM rubber can handle temperatures ranging from -50°C to +150°C, while MQ rubber can handle temperatures ranging from -40°C to +125°C.
Chemical Resistance
EPDM rubber has better chemical resistance than MQ rubber, particularly against acids, bases, and ozone. MQ rubber, on the other hand, has better resistance to oils and fuels.
Physical Properties
EPDM rubber has excellent physical properties such as high tensile strength, good tear resistance, and excellent elongation properties, while MQ rubber has good physical properties such as high elasticity, good compression set, and good impact resistance.
Weather Resistance
EPDM rubber has excellent weather resistance, ozone resistance, and UV resistance, while MQ rubber has good weather resistance but is less resistant to ozone and UV radiation.
Electrical Insulation
EPDM rubber has better electrical insulation properties than MQ rubber, making it suitable for electrical applications.

EPDM rubber is more suitable for applications that require good weather resistance, chemical resistance, and higher temperature range, while MQ rubber is more suitable for applications that require high elasticity, and good impact resistance.

MQ (Silicone) vs. NBR (Nitrile)

Chemical Resistance
MQ rubber has better resistance to chemicals, solvents, and water than NBR rubber, while NBR rubber has better resistance to oils, fuels, and hydrocarbons.
Resistance to Environmental Factors
MQ rubber has better resistance to weathering, UV radiation, and ozone than NBR rubber.
Temperature Range
MQ rubber can handle higher temperatures than NBR rubber. MQ rubber can handle temperatures ranging from -60°C to +200°C, while NBR rubber can handle temperatures ranging from -40°C to +120°C.
Physical Properties
MQ rubber has excellent physical properties such as high tensile strength, good tear resistance, and good compression set, while NBR rubber has good mechanical properties such as high tensile strength, good tear resistance, and high resistance to abrasion and wear.

MQ rubber is more suitable for applications that require excellent resistance to high temperatures, chemicals, solvents, and environmental factors such as weathering, UV radiation, and ozone, while NBR rubber is more suitable for applications that require good resistance to oils, fuels, and hydrocarbons.

MQ (Silicone) vs. NR (Natural)

Chemical Structure
NR rubber is a natural polymer made from the sap of rubber trees, while MQ rubber is a synthetic polymer made from silicon, oxygen, carbon, and hydrogen.
Temperature Range
NR rubber has a limited temperature range and can only withstand temperatures up to around 80°C before it starts to degrade, while MQ rubber has a higher temperature range and can withstand temperatures up to around 200°C.
Chemical Resistance
MQ rubber has excellent resistance to water, UV light, and extreme temperatures, while NR rubber is less resistant to chemicals and UV light.
Compression Set Resistance
MQ rubber has better compression set resistance than NR rubber, which means it can maintain its shape and elasticity even after being compressed for extended periods.
Electrical Insulation
MQ rubber has excellent electrical insulation properties, which makes it useful for applications where electrical conductivity is a concern, while NR rubber is a conductor.
Cost
MQ rubber is generally more expensive than NR rubber, which can make it less cost-effective for some applications.

MQ rubber may be preferred for its high-temperature resistance, chemical resistance, and electrical insulation properties, while NR rubber may be preferred for its elasticity and flexibility.

MQ (Silicone) vs. CR (Neoprene)

Chemical Resistance
MQ rubber has excellent resistance to a wide range of chemicals, solvents, and oils, while CR rubber has good resistance to oils, chemicals, and ozone, but is not as resistant to solvents as MQ rubber.
Resistance to Environmental Factors
MQ rubber has better resistance to weathering, UV radiation, and ozone than CR rubber.
Temperature Range
MQ rubber can handle higher temperatures than CR rubber. MQ rubber can handle temperatures ranging from -55°C to +200°C, while CR rubber can handle temperatures ranging from -40°C to +120°C.
Physical Properties
CR rubber has good mechanical properties such as high tensile strength, good tear resistance, and high resistance to compression set, while MQ rubber has excellent mechanical properties such as high tensile strength, good tear resistance, and high elasticity.

MQ rubber is more suitable for applications that require excellent resistance to chemicals, solvents, and high temperatures, and where high elasticity is required, while CR rubber is more suitable for applications that require good resistance to oils, chemicals, and ozone, and where lower temperatures may be encountered.

MQ (Silicone) vs. FKM (Viton)

Chemical Resistance
FKM rubber has better chemical resistance compared to MQ rubber. FKM can resist a wide range of chemicals, including acids, fuels, and oils, while MQ rubber is more limited in its chemical resistance.
Temperature Resistance
FKM rubber has better high-temperature resistance compared to MQ rubber. FKM can withstand temperatures up to 250°C, while MQ rubber can only handle temperatures up to around 200°C.
Compression Set
MQ rubber has better compression set resistance than FKM rubber. This means that MQ rubber retains its shape better after being compressed for an extended period, making it more suitable for sealing applications.
Cost
MQ rubber is generally less expensive than FKM rubber, which can make it a more cost-effective option for some applications.
Processing
MQ rubber is easier to process and handle compared to FKM rubber. MQ rubber can be easily molded and extruded, while FKM rubber requires specialized equipment for processing.

FKM rubber is more suitable for high-temperature and chemical-resistant applications, while MQ rubber is more suitable for sealing applications where compression set resistance is important. Additionally, MQ rubber may be a more cost-effective option for some applications and is easier to process and handle compared to FKM rubber.

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