Rubber additives material testing
Products: vulcanizing agent, antioxidant, vulcanization accelerator, processing aid, functional aid, softening plasticizer
Test items: physical properties: apparent density, melting point, softening point, crystallization point, viscosity, acidity, iodine absorption value
Material purity: volatile matter, ash content, heating loss, sieve residue, insoluble matter, sieving rate
Rubber packing test items
Product: Carbon black, white carbon black, titanium dioxide, silicate filler, carbonate filler
Test items:
Physical properties: apparent density, particle size, whiteness, PH value, oil absorption, iodine absorption, specific surface area, dispersibility
Material purity: volatile matter, water soluble matter, residue on sieve, ash content, heating loss, heavy metal particle content
Chemical additives testing project
Physical indicators: PH value, chromaticity, crystallization point, density, whiteness, particle size, oil absorption, determination of activation, pH, boiling range, etc.;
Chemical indicators: purity and impurity content, evaporation residue, acidity, hydroxyl compound, polymerization inhibitor, total aldehyde content, compound content, peroxide, elemental content, moisture, chloride, alcohol content, heavy metal content, burning residue, Insoluble matter content, water soluble matter content, sieve residue content, bulk density, looseness, volatile matter at 105°C, etc.
Common rubber additives
Vulcanization system additives
Vulcanizing agent
1. Sulfur, selenium, tellurium; 2. Sulfur-containing compounds; 3. Organic peroxy compounds; 4. Quinone compounds; 5. Amine compounds; 6. Resins; 7. Metal oxides; 8. Other vulcanizing agents.
accelerator
1. Dithiocarbamates; 2. Xanthates; 3. Thiurams; 4. Thiazoles; 5. Sulfonamides; 6. Condensates of amines and aldehyde amines; 7. Guanidines; 8. Thiourea;
Activator
1. Zinc oxide; 2. Magnesium oxide; 3. Stearic acid; ...
Protection system additives
Anti-aging agent
"Amines": 1. Naphthylamine series; 2. Quinoline series; 3. Diphenylamine series; 4. P-phenylenediamine series.
Phenols: 1. Alkylated mononuclear phenol; 2. Alkylated binuclear phenol; 3. Alkylated polynuclear phenol.
Heterocyclic type, phosphite type
Protective wax: microcrystalline wax, ozokerite, white wax, etc.
Flame retardants: 1. Bromine-based; 2. Chlorine-based; 3. Phosphorus-based; 4. Inorganic.
Operating system additives: plasticizers (softeners), dispersants, homogenizers, tackifiers, mold release agents and anti-scorching agents.
Reinforcing filler system additives: carbon black, white carbon black, inorganic reinforcing agents and fillers and organic reinforcing agents and fillers.
Adhesive system additives: meta-methyl-white system, cobalt salt adhesion promoter, triazine type adhesive, impregnating adhesive and adhesive.
Other additives: foaming agents, defoamers, coloring agents, fragrances, anti-fogging agents, anti-termite agents, lubricants, mold release agents, isolation pad treatment agents, product surface modifiers, mold cleaning agents, etc.