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HS-CODE
29-
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Detailed Description
Description:
ACM contains many varieties. Mainly, its copolymerization monomer can be divided into three kinds of monomers, such as, low temperature oil resistance monomer and vulcanization point monomer, respectively.
2.1 Low oil resistance monomer
2.2 The crosslinking reaction of monomer copolymerization is used to solve sulfide problems. Generally, the monomer content of the vulcanization point is less than 5%.
2.3 Mainly monomer：The main monomers of the ACM contain acrylic acid methyl ester, ethyl acrylate and butyl acrylate and acrylic acid -2-ethyl caproic ester, etc.
The ethyl acrylate-based rubber possesses good oil-resistant and heat-resistant performances; However, the cold resistance of the -based rubber are good. Actually, the performances of the materials could be adjusted by the above two monomers.
Applications:
The saturability of structure and the polarity of the ester base side chains of acrylate rubber determine its main application properties. Namely, heat-resisting, oxygen aging-resistance and oil-resistance performances are excellent, but cold resistance, water resistance and solvent resistance performances are poor.
3.1 The polarity ester of the base side chain make it differ from the solubility parameters of the varieties of the oils, especially for mineral oils,
3.2 Heat resisting, oxygen aging resistance and oil resistance performance of the acrylate rubber is good. Its operating tempature is higher by 30 to 60 ℃ than nitrile rubber. Its maximum operating temperature is up to the 180 ℃, even it could reach 200 ℃ or so, under intermittent or short time using. The heat aging behavior of the acrylate rubber is different from thermal degradation and heat curing types, but it falls between thermal degradation and heat curing. During aging process, the rubber tensile strength and elongation declines firstly, and then the tensile strength increases, gradually becomes brittle and aging. Compared with side chains of the macromolecular, the main chain processes more stable thermal instability. Owing to the stability of the main chain, stress relaxation and deformation phenomenon are notable when rubber endures elongation or compression deformation at high temperature.
heavy oil 149C*70H NBR AR
retention tensile strength，% 0 65
elongation retention rate，% 2 71
HD chang +20 +17
V.C Change +1.6 +9.4
180°bend CRACK NO CRACK
AR has similar oil-resistance with FKM below 150 ℃ oil, second only to FKM at the higher temperature of the oil. In addition, it possesses resistances to animal oil, plant oil, synthetic lubricating oil and the hydraulic oil of the silicone rubber esters is excellent.
Specifications:
rubber：100
mold curing：180℃×10min
post curing：170℃×4hours
HAF：50
curing condition：
mold curing：180℃×10min
post curing：170℃×4hours
potassium stearate：0.5
sulfur：0.3
sodium stearate：3
curing condition：
stearate acid：1
antioxidant：2
4 series，formula as follows：（weight）
rubber：100
stearate acid：1
antioxidant：2
HAF：50
diak no.1：1.5
DOTG：2
Tag: ZEON ACM TOPE ACM NOK ACM
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