Polymer Technology Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness? Phosphorous Carbon black Pine oil Rosin Phosphorous Carbon black Pine oil Rosin ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are 50°C and 3 - 4 kg/cm² 250°C and 10 kgf/cm² 250°C and 1 kgf/cm² 50°C and 1 kgf/cm² 50°C and 3 - 4 kg/cm² 250°C and 10 kgf/cm² 250°C and 1 kgf/cm² 50°C and 1 kgf/cm² ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Silicone resins, which are highly water repellant and has good heat resistance can not be used Resin for lamination As grease & lubricant As room temperature adhesive Hydraulic fluid for heat transfer Resin for lamination As grease & lubricant As room temperature adhesive Hydraulic fluid for heat transfer ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermosetting resins/polymers as compared to thermoplastic ones are Formed by addition polymerisation only More brittle Soluble in all organic solvents Easily reshaped & reused Formed by addition polymerisation only More brittle Soluble in all organic solvents Easily reshaped & reused ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its Strength Weathering characteristics Plasticity Elasticity Strength Weathering characteristics Plasticity Elasticity ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Linear polymers are normally Having extremely high softening point Elastometric Thermosplastic Thermosetting Having extremely high softening point Elastometric Thermosplastic Thermosetting ANSWER DOWNLOAD EXAMIANS APP
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