what are plastcizers give an example
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For gypsum wallboards : Sugars and aldonic acids are mainly used as plasticizers hereFor energetic materials: Hydroxyl-terminated polybutadiene (HTPB) are used for this. The solid rocket propellant used to fuel the space shuttle solid rocket booster employs HTPB, a synthetic rubber, as a non-energetic plasticizer/binder/secondary fuel.
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As the name implies, plasticizers are kind of dispersant materials which can make the blended material more flexible, stronger and elastic. Well known example is phthalate esters which are widely blended with PVC (poly vinyl chloride) based plastics. More examples here
For PVC plastics : Based on esters of polycarboxylic acids with linear or branched aliphatic alcohols of moderate chain length (Refer : Plasticizer)For concretes: Pozzolana, also known as pozzolanic ash (pulvis puteolanus in Latin), is a siliceous or siliceous and aluminousmaterial which reacts with calcium hydroxide in the presence of water at room temperature (source: Pozzolana )For gypsum wallboards : Sugars and aldonic acids are mainly used as plasticizers hereFor energetic materials: Hydroxyl-terminated polybutadiene (HTPB) are used for this. The solid rocket propellant used to fuel the space shuttle solid rocket booster employs HTPB, a synthetic rubber, as a non-energetic plasticizer/binder/secondary fuel.
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raosabh1:
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Early examples of plasticisers include water to soften clay and oils to plasticise pitch for waterproofing ancient boats. There are more than 300 different types of plasticisers of which about 50-100 are in commercial use. The most commonly used are phthalates and adipates....
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