Which is correct for 8 and Which is correct in 9? 8/ What is the prinčipal difference between the two subdivisions of the polymeric composites: thermosets andthermoplastics?8.1. Thermoset matrix - polyester, epoxide, phenol formaldehyde or other - after curing becomes insoluble andinfusible. On the contrary, thermoplastic matrix hardens as a result of cooling of the polymer melts.8.2. The difference between the two main types polymer matrices is the use of continuous carbon fibres asreinforcement of thermosets and chopped glass fibres in the thermoplastic composites.8.3. The use of reactive and thermoplastic resins for activating of the surfaces of reinforcing fillers.9/ In what range vary the diameters of the glass fibres in the polymer composites reinforced with them?9.1. The reinforcing glass fibers for plastics are 0,1 – 0,2 mm. in diameter;9.2. The diameters of the reinforcing glass fibers for plastics are at about 3 -4 um.9.3. The diameters of the reinforcing glass fibers for plastics vary from 8 to 12 µn.

8.1 answer Two types of polymers are used as matrix materials for fabrication composites:…

8/ What is the principal difference between the two subdivisions of the polymeric composites: therm thermoplastics? 8.1. Thermoset matrix- polyester, epoxide, phenol formaldehyde or other - after curing becomes inso infusible. On the contrary, thermoplastic matrix hardens as a result of cooling of the polymer melts. 8.2. The difference between the two main types polymer matrices is the use of continuous carbon reinforcement of thermosets and chopped glass fibres in the thermoplastic composites. 8.3. The use of reactive and thermoplastic resins for activating of the surfaces of reinforcing fillers. 9/ In what range vary the diameters of the glass fibres in the polymer composites reinforced with them? 9.1. The reinforcing glass fibers for plastics are 0,1 – 0,2 mm. in diameter; 9.2. The diameters of the reinforcing glass fibers for plastics are at about 3 - 4 um. 9.3. The diameters of the reinforcing glass fibers for plastics vary from 8 to 12 un.

8/ What is the principal difference between the two subdivisions of the polymeric composites: therm thermoplastics? 8.1. Thermoset matrix- polyester, epoxide, phenol formaldehyde or other - after curing becomes inso infusible. On the contrary, thermoplastic matrix hardens as a result of cooling of the polymer melts. 8.2. The difference between the two main types polymer matrices is the use of continuous carbon reinforcement of thermosets and chopped glass fibres in the thermoplastic composites. 8.3. The use of reactive and thermoplastic resins for activating of the surfaces of reinforcing fillers. 9/ In what range vary the diameters of the glass fibres in the polymer composites reinforced with them? 9.1. The reinforcing glass fibers for plastics are 0,1 – 0,2 mm. in diameter; 9.2. The diameters of the reinforcing glass fibers for plastics are at about 3 - 4 um. 9.3. The diameters of the reinforcing glass fibers for plastics vary from 8 to 12 un.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Which is correct for 8 and Which is correct in 9?

8/ What is the prinčipal difference between the two subdivisions of the polymeric composites: thermosets and
thermoplastics?
8.1. Thermoset matrix - polyester, epoxide, phenol formaldehyde or other - after curing becomes insoluble and
infusible. On the contrary, thermoplastic matrix hardens as a result of cooling of the polymer melts.
8.2. The difference between the two main types polymer matrices is the use of continuous carbon fibres as
reinforcement of thermosets and chopped glass fibres in the thermoplastic composites.
8.3. The use of reactive and thermoplastic resins for activating of the surfaces of reinforcing fillers.
9/ In what range vary the diameters of the glass fibres in the polymer composites reinforced with them?
9.1. The reinforcing glass fibers for plastics are 0,1 – 0,2 mm. in diameter;
9.2. The diameters of the reinforcing glass fibers for plastics are at about 3 -4 um.
9.3. The diameters of the reinforcing glass fibers for plastics vary from 8 to 12 µn.

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