Fillers
Polymer Articles
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3y ago
Types of fillers Carbon black Calcium carbonate Clay Silica Carbon black: Lampblack process is the oldest process to produce carbon black. Highly aromatic oil is burned in cast iron open pans to produce relatively larger particle diameter carbon black. Channel black is made by burning natural gas with air insufficient for complete combusion. Carbon black is collected on cool metal surface in contact with flame. Today, most carbon black is produced by oil furnace process. Natural gas is burnt completely which produces huge heat in furnace. Aromatic oil is fed into the hot zone as mist ..read more
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Accelerators
Polymer Articles
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3y ago
Types of vulcanizing accelerators Sulphenamides: They offer high scorch safety and cure rate. The more basic is attached amine, more is scorch safety and higher cure rate.Perhaps the most widely used sulphenamide is N-Cyclohexyl-2-Benzothiazole Sulphenamide (CBS) due to balance between scorch safety and cure rate. TBBS is another one which is used for more scorch safety. It produces vulcanizte of high modulus. Figure 01: TBBS  Thiazoles: The most common accelerator related to this group is MBT. Later came MBTS. MBT provides medium vulcanization rate and vulcanizate of relativel ..read more
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Silicon Rubber
Polymer Articles
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3y ago
Advantages of Silicon Rubber 1.    Introduction: Silicon rubber is usually classed as speciality elastomer due to its unique properties and higher price as compared to other common elastomers. There are two types of silicon elastomers. There are thermosetting rubbers that are vulcanized with heat and Room Temperature Vulcanizing (RTV) rubbers. 2.    Advantages: ·        Silicon rubber is resistant to; Ø Ozone, oxygen, heat (up to 315oC) Ø UV light Ø Moisture and general weathering effects. ·        High degre ..read more
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