Introduction to analysis the classification of the rubber kraal pad
Rubber kraal cushion rubber as the main material (
Can contain fabric, metal sheet and other reinforcing material)
, made by vulcanization with a certain thickness and relatively large area of sheet products, the following introduce everyone to common general rubber kraal cushion some of the different classification.
Natural rubber kraal pad (
: with rubber hydrocarbon (
Give priority to, containing a small amount of protein, moisture, resin acid, inorganic salt and sugar.
Elasticity, high tensile modulus, tear resistance and excellent electrical insulation, good abrasion resistance and drought resistance, good processability, easy to other materials bonding, in terms of comprehensive performance is better than that of most of the synthetic rubber byre pad.
Defect is poor resistance to oxygen and ozone resistance, easy aging metamorphism;
Oil resistant and solvent resistance is bad, the corrosion of acid and alkali resistance is low;
Thermal stability is not high.
Temperature range of use: about 60 ℃ ~ + 80 ℃.
Natural rubber kraal styrene-butadiene rubber kraal MATS (
: a copolymer of butadiene and styrene.
Performance is close to natural rubber kraal mat, is currently the biggest general synthetic rubber production stall mat, is characterized by wear resistance, ageing resistance and heat resistance than natural rubber kraal mat, quality of a material is natural rubber kraal pad evenly.
Defect is: low elasticity, flexible, resistance to tear resistance is poorer;
Poor processing performance is poor, especially since the viscosity and adhesive strength is low.
Temperature range of use: - 50 ℃ ~ + 100 ℃.
Mainly used to replace natural rubber tyre making, kraal mat, rubber hose, rubber shoes and other common products.
Neoprene kraal pad (
: it is done by chloroprene monomer emulsion polymerization of polymers.
The rubber molecules containing chlorine atom, so compared with other general rubber kraal pad: it has excellent resistance to oxygen, ozone resistance, non-flammable, fire after self-extinguishing, oil resistance, solvent resistance, acid and alkali resistance and aging resistance, good air tightness, etc;
Its physical and mechanical properties are better than natural rubber kraal pad, so it can be used as a general-purpose rubber kraal mat, also can be used as a special rubber kraal pad.
Main drawback is the cold resistance is poorer, the large proportion, relatively high cost, electrical insulation is not good, when processing easy sticky roller, easy to scorch and easy to die.
In addition, raw rubber poor stability, not easy to save.
Temperature range of use: - 45 ℃ ~ + 100 ℃.
Butyl rubber kraal pad (
: is the isobutylene and a small amount of isoprene and butadiene copolymer.
The biggest characteristic is good air tightness, ozone resistance, aging resistance performance is good, high heat resistance, long-term working temperature is under 130 ℃;
Ability of inorganic acid (
Such as sulfuric acid, nitric acid, etc. )
And general organic solvent, good vibration absorbing and damping properties, electrical insulation is also very good.
Defect is the difference in elasticity, processing performance is poor, curing speed slow, viscosity and poor oil resistance.
Temperature range of use: about 40 ℃ ~ + 120 ℃.
Nitrile butadiene rubber kraal pad (
: butadiene and propylene acrylic copolymer.
Features are resistant to gasoline hydrocarbon oil and fat performance is very good, after polysulfide rubber, acrylate and fluorine rubber kraal pad, and is superior to other common rubber kraal pad.
NBR kraal mat has good heat resistance, air tightness, wear resistance and good resistance to water, etc. , strong cohesive force.
Defect is hardy and ozone resistance is poorer, low strength and elasticity, acid resistance is poor, electrical insulation is bad, polar solvent resistance is poor.
Temperature range of use: - 30 ℃ ~ + 100 ℃.
Mainly used in the manufacture of various oil products, such as rubber hose, sealing products, etc.
Epdm kraal pad (
: ethylene and propylene copolymer, epdm kraal pad is characterized by ozone resistance, uv resistance, excellent weather resistance and aging resistance, among the top of the general rubber kraal pad.
Electrical insulation, good chemical resistance, impact elasticity, resistance to acid and alkali, the proportion of small, high filling can be fit.
Heat resistant up to 150 ℃, polar solvent resistant - ketone, esters, etc. , but no fatty hydrocarbon and aromatic hydrocarbon, other physical and mechanical properties is slightly inferior to natural rubber kraal pad and stall is better than that of styrene butadiene rubber pad.
Defect is self-adhesive and mutual viscosity is very poor, not easy to glue.
Temperature range of use: - 50 ℃ ~ + 150 ℃.
Silicone rubber kraal pad (
: as the main chain containing silicon and oxygen atoms of special rubber kraal pad, which plays a main role is silicon.
Its main characteristic is high temperature resistant,
Up to 300 ℃)
And low temperature resistant,
Minimum - 100 ℃)
, is currently the best 扥 YiHan, high temperature resistant rubber kraal mat;
At the same time, good electrical insulation, high, to the stability of the thermal oxidation and ozone chemical inertness.
Defect is low mechanical strength, oil resistance, solvent resistance and acid-proof alkaline poor, difficult to sulfide, the price is more expensive.
Temperature: - 60 ℃ ~ + 200 ℃.
Fluorine rubber kraal pad (
: it is composed of fluoride monomer copolymerization organic elastomer.
Its characteristics and heat-resistant up to 300 ℃, acid and alkali resistance, oil resistance is one of the best in the oil resistant rubber kraal pad, radiation resistance, good resistance to high vacuum performance;
Electrical insulation, mechanical properties, resistance to chemical corrosion resistance, ozone resistance, weathering resistance are good.
Defect is poor processability, expensive cold resistance is poor, the elastic air permeability is low.
Temperature range of use: - 20 ℃ ~ + 200 ℃.
Is mainly used in the defense industry manufacturing aircraft, rockets on the vacuum, high temperature resistant, resistant to chemical corrosion resistance of sealing materials, rubber hose, or other parts and automobile industrial rubber stall MATS products.