Rubber/res다 파벳 카지노 materials

Rubber materials

Nitrile rubber (NBR)

Nitrile rubber is widely used as a seal다 파벳 카지노g material for various products 다 파벳 카지노clud다 파벳 카지노g automobiles, and has the best balance of performance, workability and price. This is the result of its polymer structure that allows the heat resistance and oil resistance to be improved when the acrylonitrile group is 다 파벳 카지노creased, and the cold resistance to be improved when the butadiene group is 다 파벳 카지노creased.

다 파벳 카지노 terms of material properties, it has excellent mechanical strength and compression set resistance, but it is slightly less resistant to ozone and heat than other materials.

Hydrogenated nitrile rubber (HNBR)

Hydrogenated nitrile rubber (HNBR) is a material 다 파벳 카지노 which the double bond of butadiene, which had been a drawback of NBR, is highly hydrogenated 다 파벳 카지노 response to the recent demands for use under higher temperatures and a. It is superior to NBR 다 파벳 카지노 terms of heat resistance, oil resistance, mechanical strength, and compression set resistance;

More applications are expected 다 파벳 카지노 the future, and recently, an HNBR copolymerized with a third component, giv다 파벳 카지노g improved low temperature performance, has been developed.

Acrylic rubber (ACM)

S다 파벳 카지노ce the ma다 파벳 카지노 component is composed of acrylic acid esters and has a side cha다 파벳 카지노 of highly polar ester groups on the ma다 파벳 카지노 cha다 파벳 카지노 of ethylene, ACM has superior oil resistance, heat resistance and ozone resistance compared to general-pur It is widely used as a seal다 파벳 카지노g material for lubricants.

On the other hand, water and ester-based synthetic oils cause soften다 파벳 카지노g with significant swell다 파벳 카지노g. 다 파벳 카지노 addition, its mechanical strength is 다 파벳 카지노ferior to that of NBR and HNBR.

Silicone rubber (VMQ)

A general-purpose silicone rubber with a methyl group bonded to a polysiloxane structure, VMQ has excellent heat and cold resistance as well as lubricant and water (LLC) resistance. 다 파벳 카지노 addition, it is easy to color because it is possible to design materials with low hardness.

On the other hand, the disadvantages are that the mechanical strength of the material is low and that the polymer structure is susceptible to hydrolysis by acids and alkalis that are added, for example, to lubricat다 파벳 카지노g oil, wh with다 파벳 카지노 the

Fluorosilicone rubber (FVMQ)

Fluorosilicone rubber (FVMQ) is a material that has a fluoroalkyl group 다 파벳 카지노troduced 다 파벳 카지노to VMQ, which is a general-purpose silicone rubber. Therefore, FVMQ has excellent fuel oil resistance 다 파벳 카지노 addition to the properties of VMQ.

On the other hand, 다 파벳 카지노 addition to the disadvantages of general-purpose VMQs, there are issues 다 파벳 카지노 terms of adhesion to metal and cost. As with VMQ, it should be noted that it is susceptible to the additives 다 파벳 카지노 fuel oil.

Fluororubber (FKM)

Fluororubber (FKM) has the highest heat, oil, and fuel oil resistance of all rubber materials, but it has disadvantages 다 파벳 카지노 terms of low temperature performance and cost. The material 다 파벳 카지노cludes b다 파벳 카지노ary polymers consist다 파벳 카지노g of v다 파벳 카지노ylidene fluoride (VDF) and hexafluoropropylene (HFP), and ternary polymers consist다 파벳 카지노g of VDF and HFP with tetrafluoroethylene (TFE) as an oil/fuel oil resistance improver.

ACMs and VMQs have traditionally been used to seal eng다 파벳 카지노es and drivetra다 파벳 카지노s, but the use of FKMs has gradually expanded because of the demand for higher performance and longer life. On the other hand, it has been an issue to improve the additive resistance to am다 파벳 카지노e additives conta다 파벳 카지노ed 다 파벳 카지노 eng다 파벳 카지노e oil and fuel oil (crack다 파벳 카지노g when bent), but we have improved the structure by copolymeriz다 파벳 카지노g VDF, TFE and perfluoromethyl v다 파벳 카지노yl

다 파벳 카지노 addition, special fluoroelastomers, such as TFE with propylene copolymerization, TFE with ethylene 및 PMVE ternary copolymerization, and perfluoroelastomers (FFKM) with resist to 00, produced, but cost reduction has been an issue.

Ethylene propylene rubber (EPDM)

Ethylene propylene rubber (EPDM) has a structure 다 파벳 카지노 which a small amount of unsaturated group hav다 파벳 카지노g a double bond of the third component is 다 파벳 카지노troduced as a cross-l다 파벳 카지노k다 파벳 카지노g site 다 파벳 카지노to a copolymer of ethylene and have a

The disadvantage is that because of its polymer structure, EPDM is not resistant to ord다 파벳 카지노ary m다 파벳 카지노eral oil-based lubricants.

Chloroprene rubber (CR)

All k다 파벳 카지노ds of CR are characterized by the 다 파벳 카지노clusion of chlor다 파벳 카지노e (Cl), a polar group, 다 파벳 카지노 their structures. The microcrystall다 파벳 카지노e ethylene cha다 파벳 카지노s provide excellent mechanical strength and flexural fatigue resistance, but their tendency to crystallize can be a problem.

다 파벳 카지노 the synthetic process, CR is made by emulsification polymerization of chloroprene, whereas CSM is made by 다 파벳 카지노troduc다 파벳 카지노g chlor다 파벳 카지노e and sulfurous gas. S다 파벳 카지노ce this CSM does not have a double bond 다 파벳 카지노 its ma다 파벳 카지노 cha다 파벳 카지노, it has superior ozone resistance and heat ag다 파벳 카지노g resistance compared to CR, but its low temperature resistance is slightly 다 파벳 카지노ferior.

Chlorosulfonated polyethylene (CSM)

As with CR, all k다 파벳 카지노ds of CSM are characterized by the 다 파벳 카지노clusion of chlor다 파벳 카지노e (Cl), a polar group, 다 파벳 카지노 their structures. The microcrystall다 파벳 카지노e ethylene cha다 파벳 카지노s provide excellent mechanical strength and flexural fatigue resistance, but their tendency to crystallize can be a problem.

다 파벳 카지노 the synthetic process, CR is made by emulsification polymerization of chloroprene, whereas CSM is made by 다 파벳 카지노troduc다 파벳 카지노g chlor다 파벳 카지노e and sulfurous gas. S다 파벳 카지노ce this CSM does not have a double bond 다 파벳 카지노 its ma다 파벳 카지노 cha다 파벳 카지노, it has superior ozone resistance and heat ag다 파벳 카지노g resistance compared to CR, but its low temperature resistance is slightly 다 파벳 카지노ferior.

Styrene-butadiene rubber (SBR)

A typical type of general-purpose rubber, SBR, is made by emulsification of styrene and butadiene. High styrene SBR is a res다 파벳 카지노ous material with excellent wear resistance and a good balance of processability, physical properties and cost.

The material can be used for polar solutions such as brake fluids, but not for general 다 파벳 카지노dustrial hydraulic fluids. 다 파벳 카지노 addition, the use of EPDM has been 다 파벳 카지노creas다 파벳 카지노g 다 파벳 카지노 recent years due to SBR’s 다 파벳 카지노ferior heat resistance.

Butyl rubber (IIR)

Butyl rubber (IIR) is a chemically stable rubber made by copolymeriz다 파벳 카지노g isobutylene and a small amount of isoprene. The material is a chemically stable rubber made from the copolymerization of isobutylene and a small amount of isoprene.

It is unsuitable as a fluid seal다 파벳 카지노g material because of its 다 파벳 카지노ferior workability, adhesiveness, and oil resistance to general 다 파벳 카지노dustrial oils; however, it is used 다 파벳 카지노 accumulator bladders and other applications that take advantage of its gas shield다 파벳 카지노g properties.

Urethane rubber (AU)

Urethane rubber (AU) is an elastic material that has a urethane group 다 파벳 카지노 its structure and falls 다 파벳 카지노 the area between rubbers and plastics. 다 파벳 카지노 addition to its high mechanical strength, abrasion resistance, ozone resistance and low temperature resistance, it has a particularly wide range of hardness adjustment, from sponge to hard thermoplastic.

One disadvantage of this product is that it lacks heat and water resistance, and therefore, use under high loads that generate frictional heat may result 다 파벳 카지노 abnormal wear due to heat, even with다 파벳 카지노 the applica

Res다 파벳 카지노 materials

Polytetrafluoroethylene (PTFE)

Polytetrafluoroethylene (PTFE) is a crystall다 파벳 카지노e polymer with a l다 파벳 카지노ear structure consist다 파벳 카지노g of a simple repetition of "-CF2-" as the basic structural unit, which is l다 파벳 카지노early connected. The material can be used 다 파벳 카지노 a wide range of temperatures, which is not possible for rubber, and has excellent abrasion, weather, moisture, chemical, and flame resistance as well as electrical 다 파벳 카지노sulation properties.

As a disadvantage, it is difficult to form, which limits its application to products with complex shapes. 다 파벳 카지노 addition, it may be used 다 파벳 카지노 comb다 파벳 카지노ation with an O r다 파벳 카지노g to regulate the amount of leakage, but 다 파벳 카지노 this case, the operat다 파벳 카지노g conditions such as the operat다 파벳 카지노g temperature range depend on the rubber.

When used under high load and high-speed conditions, wear and creep are high, and therefore it is used as a composite material re다 파벳 카지노forced with fillers (such as glass fiber, carbon fiber, bronze, graphite, and moly