The properties of DAI-ELLT-302 elastomer, a disadvantage of the previous ammonia containing elastomer, have been improved. It provides excellent mechanical properties, bending and acid resistance. In particular, the TR10 material is - 31 ℃, providing excellent low-temperature sealing performance.
1. Properties of raw rubber
Item Description Data Test Method
Visual inspection of translucent or light yellow appearance
Fluorine concentration 64.5 mass%
Specific gravity in accordance with (23 ℃) 1.80 JIS K6268
Mooney viscosity (ML 1+10-100 ℃) about 68 JIS K6300-1
Solubility Easily soluble in low molecular weight ketones and esters
2. Physical properties (curing)
Test method and conditions of project unit data
Conform to 100% tensile stress MPa 2.4 JISK 6251
Side arm extension and MPa_ 1.9 0O.
It meets the growth rate of 290 JISK6251
Compression permanent deformation% 25 200 ℃ X70h, 25% compression
Hardness (Shore peak) 65 acc. to JS K 6253
*The above values are representative and cannot be guaranteed.
(Compound preparation)
DAI-EL LT302 100 copies
MT carbon black * 1 20 copies * 1 Temax N990Cancarb Co., Ltd
Ureate * 2, 3 parts * 2 TAIC Kasei Co., Ltd
PERHEXA 25R * 7 1 piece 43 PERHEXA 25RNEO
(curing conditions)
Pressurized vulcanization 160 ℃ x 10 minutes Oven vulcanization 180 ℃ x 4 hours
5 Precautions for using DII-EL
When vulcanizing DAI-EL and using vulcanized rubber under high temperature, a small amount of gas harmful to human body will be produced, so indoor ventilation must be fully paid attention to. Because toxic gas will be generated, it is not allowed to dispose of the scraps by burning. If it needs to be discarded, please handle it safely according to relevant national laws. If this product is attached to cigarettes, you will inhale toxic gas when smoking. Therefore, you should wash your hands and face after work. Please be careful not to attach the product to cigarettes. If metal particles such as amine powder are used as ingredients, they will decompose violently at high temperatures, so do not use metal particles as ingredients.
Fe-271-u is fluorosilica gel produced by shinyue chemical, Japan. It is gray white, vulcanizing agent c-8a, hardness 73, elongation 300%, tensile strength 9.0MPa, tear strength 16, linear shrinkage 3.5%, rebound 34%, compression set 9%, and has good physical properties. As fluorosilica gel, it has excellent heat resistance, cold resistance, processability and solvent resistance. The standard oil irm903 shows swelling below 5% (150 ℃ / 70 hours). In addition, it also has good resistance to silicone oil
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