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.