Selection of cold-resistant rubber sheet, a variety of rubber use temperature and purpose

Cold-resistant rubber sheet selection reference

1、Use temperature -60 ~ +250 ℃ in the ozone and electric field work in the selection of methyl vinyl silica gel

2、Using temperature -60 ~ +140 ℃ cold air system, in the medium of phosphoric acid fat oil to work in the selection of EPDM rubber

3、Using temperature -60 ~ +100 ℃ cold air system, in the instrumentation oil and 10 # hydraulic oil to work in the choice of nitrile rubber 1704

4、Use temperature -60 ~ +80 ℃ in the air, ethanol-glycerin mixture, and with 6 # polyethylsiloxane oil for lubricants, the choice of styrene-butadiene rubber -10

5, using temperature -60 ~ +130 ℃ in the instrument oil, 10 # hydraulic oil, kerosene, gasoline and transformer oil, light and ozone-resistant selection of neoprene CR-120

6、Use temperature -70 ~ +80 ℃ wear-resistant, elasticity, physical properties of the medium selection of cis-butadiene rubber and use examples

1、Nitrile rubber and natural rubber to improve the cold resistance and mechanical properties. 2、Chloroprene rubber and smooth butyl rubber to improve cold resistance, abrasion resistance and processability.

Comprehensive consideration: dienophthalic rubber S dosage is slightly larger, accelerator with TT, CBS is good.

1 # vulcanizing agent: CR vulcanized with metal oxides, magnesium oxide dosage can be higher than 4 parts, EPDM rubber vulcanized with DCP, VMQ with double 25

2#Plasticizer: principle: use plasticizer can improve the cold resistance

1, NR, SBR, BR choose petroleum oil, three lines of oil, aromatic oil (butter) 2, EPDM with naphthenic oil, paraffin oil, asphalt 3, IIR with paraffin oil, petroleum jelly

4, NBR with DOP / DBP / DOS / Trimethylolphenyl Phosphate 5, neoprene with butyl oleate, sebacate dibutyl 3 # Reinforcement filler: principle: the more you add the more it will reduce the cold resistance 1, NBR with N330, N774

2、CR half-furnace black is good, have high cold resistance.

3、EPDM with general-purpose carbon black, high wear-resistant or super wear-resistant carbon black to adjust the performance 4、VMQ with precipitated silica and gas phase silica

Generally speaking: gaskets, O-rings, oil seals, anti-vibration systems require low-temperature compression and permanent deformation Example of formula: Formula 1.

Material Content Methyl vinyl silica 100 Fumed white CB 60 Diphenylsilanediol 5

Iron Red 5 Bis 25 0.5-1 Strength: 8 Elongation: 247 Hardness: 55”