What does a nucleating agent do?

What does a nucleating agent do?

Nucleating agents are used with polymers that can crystallize in order to speed cycle times. After melting, it is solidification rate of the plastic into a useful shape that controls processing and cycle time.

What are nucleating agents give examples?

Nucleating agents are usually used in polymers which have slow nucleation and crystallization rates. The examples are polyethylene terephthalate and mainly polypropylene.

What effect does the nucleating agent have on the grain structure?

Nucleating agent showed a heterogeneous nucleation effect. The results showed that at the level of the aggregation structure, crystallinity increases and spherulite size tends to decline with increasing nucleating agent.

What is the meaning of nucleating?

1 : to form into a nucleus : cluster. 2 : to act as a nucleus for. 3 : to supply nuclei to.

Which of the following is used as a nucleating agent in glass system?

Therefore, ZrO2 is the most efficient nucleating agent to generate fluorophlogopite mica in these glass–ceramics useable for SOFC applications.

Is nucleation a chemical reaction?

One notable oversight in CNT is that nucleation is modeled as a phase transition with no consideration of concomitant chemical reactions.

What conditions are important for nucleation?

To start the nucleation process, the supercooled phase is needed where the liquids need to be cooled down to below the melting temperature which is the maximum temperature of homogeneous nucleation but in the same time, the liquid need to make sure that it above the freezing temperature (homogeneous nucleation …

What do we mean by nucleation?

Nucleation is simply defined as the first random formation of a distinct thermodynamic new phase (daughter phase or nucleus (an ensemble of atoms)) that have the ability to irreversibly grow into larger sized nucleus within the body of a metastable parent phase.