Ingredients of moulding components, Other Engineering

Assignment Help:

Q. What are the ingredients of moulding components?

Ans. Polymer Additives: One or more of the following materials are added to the polymers, either before or during polymerization, to make them processable plastics.

            1. Catalysts or Accelerators: They are also known as hardeners. They are the catalysts which are added to accelerate the chemical reactions during polymerization of plastics.

            2. Fillers: These are the materials added to synthetic resins to dilute them in order to reduce their consumption. They also increase their bulk and thus, reduce the material cost. Many of them, specially when they are finally distributed help in increasing strength, stiffness and thermal resistance of the plastics. Materials added for this purpose include clay, tale, wood flour, mica, quartz, alumina, carbon black, calcium carbonate, asbestos or glass fibers etc.

            3. Modifiers: These are the chemicals added to plastics for changing the properties of the base resin. Some of them help in providing mechanical properties as well.

            4. Plasticisers: They are the chemicals added for either softening the resin of forming temperature or to improve their toughness of the finished stage and to impart flexibility to their finished products. A plasticiser is normally a fluid of high molecular weight.

            5. Stabilisers: Their addition to plastics help in preventing deterioration due to the action of heat and light.

            6. Initiators: They help in initiation starting the reaction i.e. polymerization. H2O2 is commonly used for this purpose.

            7. Dyes and pigments: They are the colouring agents, added to impart different colours and shades to plastics.


Related Discussions:- Ingredients of moulding components

Difference between income & expenditure statement, Difference between incom...

Difference between income & expenditure statement P&L is to be ready by the Company or Dealing Origination which evolved in Dealing of any commodity or manufacturing of completed e

Continuous casting, Continuous Casting : In essential, the process consist...

Continuous Casting : In essential, the process consists of pouring molten metal into a short vertical metal die or mould (at a controlled rate), which is open at both ends, coolin

Survey, What''s the principles of surveying?

What''s the principles of surveying?

. CFD, HOW TO MAKE ROTATING FRAME

HOW TO MAKE ROTATING FRAME

Efficient market hypothesis, the nature and importance of the efficient mar...

the nature and importance of the efficient market hypothesis and comment on the implications for managers and investors?

Hot and cold working, the amount of cold working metal can withstand is dir...

the amount of cold working metal can withstand is directly related to which properties? name two and also discuss the effect that cold working has upon these properties?

engneering mechanics, the speed of an object at the end of 4 succesive sec...

the speed of an object at the end of 4 succesive seconds is 2o,25,3o and 35 m/sec respectvly, what is the acceleration of this object?

Siliconizing, 1.defination 2.explain the mechanisms of each process. 3. exp...

1.defination 2.explain the mechanisms of each process. 3. explain in detail how many types of each process 4. advantages 5. disadvantages

Opration research, a note on tracing a closed loop. What are the characteri...

a note on tracing a closed loop. What are the characteristic features of a closed loop?(

Priority scheduling- operating system, Operating System Assignment# Priorit...

Operating System Assignment# Priority Scheduling leads to the risk of starvation: a process is ready, but never is given the processor. Some preemptive priority schedulers therefor

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd