Well, this would depend on the type of plastic, as plastics are synthetic materials they vary tremendously in their chemical compositions. Most plastics however have quite a low heat capacity and in general plastic insulating materials have volumetric heat capacities of ~0.130x10^6 J/m^3*K (@20deg C) or lower. In addition they have low thermal conductivities of 0.03 W/mK (only 0.005 higher then air!). Hope this helped if you were still looking for your answer.
[Disclaimer: This post is purely for educational purposes and should not be taken as precise scientific measurements. In other words don't use this information to try to build something that might explode if this answer is not completely accurate.]
calorimeters should have a low heat capacity
Water has a high heat capacity, meaning it can absorb and store a large amount of heat before its temperature changes significantly. This property makes water an effective heat sink because it can absorb heat from its surroundings, such as in cooling systems, without experiencing a rapid increase in temperature. Additionally, water's high heat capacity allows it to release heat slowly, making it useful in regulating temperature changes in various processes.
Water has a high heat capacity and a high specific heat capacity 4.184 kJ/kg/K
A substance with a high specific heat capacity is one that needs a lot of heat energy pumped into it in order to raise its temperature. Substances with relatively high specific heat capacities include water, rock, and potatoes.
Pots and pans made from a material with a high specific heat capacity would be better. This is because materials with high specific heat capacity can absorb and retain more heat, leading to more even cooking and temperature control during the cooking process.
Higher Heat
There are many different kinds of plastic, so there would be no "fixed" latent heat of vaporization. Additionally, heating most plastics would not cause them to vaporize. They would burn in the presence of air (oxygen), or pyrolize in an inert atmosphere. Plastics won't generally change from a liquid to a gas like water becomes steam when it is hot enough. The heat will cause chemical changes in the plastic, and it will cease to be what it was in the beginning.
It would have a LOW specific heat capacity because -- the subst heats up quickly which means you would use less heat capacity.
Good conductors such as metals have a high specific heat capacity, meaning they can absorb and release large amounts of heat without a significant change in temperature. Poor conductors, like wood or plastic, have a lower specific heat capacity, meaning they can only absorb and release small amounts of heat before their temperature changes significantly.
An object with low heat capacity heats and cools faster than an object with high heat capacity. Objects with low heat capacity require less energy to raise or lower their temperature compared to objects with high heat capacity, which means they heat up or cool down faster.
Water has a high heat capacity
high heat capacity