What is thermotropic liquid crystalline polymer?
Thermotropic liquid crystalline polymers (TLCPs) represent a class of high-performance polymers that have excellent thermo-mechanical properties combined with a low density, resulting in excellent specific properties [5,6].
What is liquid crystal polymer used for?
Uses. Because of their various properties, LCPs are useful for electrical and mechanical parts, food containers, and any other applications requiring chemical inertness and high strength.
What is liquid crystal polymer made from?
Liquid crystalline polymers (LCPs) are a relatively unique class of partially crystalline aromatic polyesters based on 4-hydroxybenzoic acid and related monomers shown in Fig. 6.72. They are capable of forming regions of highly ordered structure while in the liquid phase.
Which is type of thermotropic liquid crystal?
Most of the thermotropic liquid crystals are composed of rod-like molecules and classified into three types, nematic, smectic and cholesteric (Figure 2). They are formed on heating the crystalline solid or cooling the isotropic liquid.
Is liquid crystal polymer toxic?
LCP Fluids are a new class of polymers that are: non-toxic; physiologically inert; not attacked or biodegraded by bacteria or fungi; have a boiling point greater than 550F; are stable in the presence of oxidizing agents; are un-reactive with acids and alkaline solutions; are transparent; immiscible with water and …
Is liquid crystal polymer flexible?
LCP’s inherent properties such as multi-layer capabilities, excellent electrical properties, flexibility, and near hermetic nature suit it to a wide range of applications such as passive devices, packages, and RF cables.
Is LCP A plastic?
Liquid Crystal Polymer (LCP) plastic exhibits high temperature, excellent mechanical strength and dimensional stability, high dielectric strength and low coefficient of thermal expansion.
What is the meaning of thermotropic?
thermotropism. / (ˌθɜːməʊˈtrəʊpɪzəm) / noun. the directional growth of a plant in response to the stimulus of heat.
What are thermotropic and lyotropic liquid crystals?
Thermotropic liquid-crystals exhibit a phase transition into the liquid-crystalline state as temperature is raised [7]. Lyotropic liquid-crystals exhibit phase transitions as a function of both temperature and concentration of the liquid-crystal molecules in a solvent, which is typically water for biological molecules.
Are thermotropic liquid crystals toxic?
This paper reports the results of a study that aimed to identify thermotropic liquid crystals that are not toxic to mammalian cells. Mesogenic compounds were mixed to create eight liquid crystalline phases, each with a unique set of functional groups.
Is there any science behind mood rings?
As Dr. Emrani puts it: “Cognition can affect bodily sensations, and vice versa. So yes, mood rings are undoubtedly reflecting real-life changes in your body temperature, which can occur in response to your emotions, but they’re never going to tell you something about your emotions that you don’t already know.