Jun 28, 2014· The Huntsman Automotive team gave Urethanes Technology International an overview of some of the issues driving change in the way that polyurethane can be used to reduce the noise, vibration and ride harshness (NVH) which passengers experience in a modern car.
The HTPB Market by Application, by End-Use (Aerospace & Defense, Construction & Civil.
2.3. Synthesis of polyurethane and PU/MWCNT nanocomposite The polyurethane networks based on HTPB and isophorone diisocyanate compound were prepared by a batch process. The process of synthesis of PU was as follows: 1. HTPB is weighted out according to the formulation as men-tioned in Table 2.1 and is put in the reactor vessel. 2.
Mar 16, 2006· hello, I have heard that in earlier times PU (polyurethane) was used in solids instead of HTPB. Has anyone ever tried PU for solids?? PU would be a nice possibility to make some solids here in Europe, where HTPB isnt available at all.
Curative calculation for polymer binder and additives The function of the curative is to link the OH of the binder (hydroxyl compound) with a NCO of the curative (isocyanate compound). Other liquid additives in the composite mixture may have OH equivalents and need to be taken into account when calculating the amount of curative.
A series of polyurethanes have been prepared from hydroxyl-terminated polybutadiene (HTPB) with high cis-1,4 content and commercial free-radical-polymerized HTPB (FHTPB). The mechanical properties of cured polyurethane (PU) samples have been studied by tensile testing and dynamic mechanical analysis (DMA), and their thermal properties have been tested by differential scanning calorimetry (DSC .
The viscoelastic response of two different polyurethane (PU) systems (crosslinked and chain-extended) based on hydroxyl terminated polybutadiene (HTPB) were analyzed and compared. The PU elastomers were fabricated by reacting HTPB with isophorone diisocyanate. A tri-functional alcohol (1,2,6 hexanetriol) and a bi-functional
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Properties and Characteristics - 28 materials and 17 different shapes are available. Properties and Characteristics Urethane. Material Features: Ether Polyurethane: Excels in mechanical strength, has low heat resistance and chemical resistance. Superior water resistance compared to Ester Polyurethane.
Abstract. Oligobutadiene-based prepolymers and polyurethanes (PU) were prepared from hydroxyl terminated polybutadiene (HTPB), three diisocyanates (aromatic, alicyclic and aliphatic) and two chain extenders (containing hydroxyl or amino groups).
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Thermal Properties of Polyurethane Binder with 2-(Ferrocenylpropyl)dimethylsilane-grafted Hydroxyl-Terminated Polybutadiene Article in Journal of Applied Polymer Science 121(6):3560-3568 .
A series of polyurethanes have been prepared from hydroxyl-terminated polybutadiene (HTPB) with high cis-1,4 content and commercial free-radical-polymerized HTPB (FHTPB).The mechanical properties of cured polyurethane (PU) samples have been studied by tensile testing and dynamic mechanical analysis (DMA), and their thermal properties have been tested by differential scanning calorimetry (DSC .
An extensive enhancement in the thermo-mechanical properties of the NCO-fMWCNTs/HTPB PU and alkyne-fMWCNTs/acyl-GAP EIPN based nanocomposite have been achieved which may be ascribed to good dispersion of fMWCNTs in the polymer matrix, strong interfacial bonding and entanglements of crosslinked networks during in situ polymerization. This EIPN .
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A propellant or propellent is a chemical substance used in the production of energy or pressurized gas that is subsequently used to create movement of a fluid or to generate propulsion of a vehicle, projectile, or other object.Common propellants are energetic materials and consist of a fuel like gasoline, jet fuel, rocket fuel, and an oxidizer.Propellants are burned or otherwise decomposed to .
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Jul 14, 2011· Such liquid polybutadiene (HTPB) is used primarily in sealing compounds for insulating glass windows and in adhesives for automobile manufacture, the company notes. With this plant, Evonik says, it will be able for the first time to offer hydroxyl-functionalised polybutadiene to its customers in the adhesives and sealant industries.
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Improved adhesive properties and bonding performance of HTPB‐based polyurethane elastomer by using aziridine‐type bond promoter Article in Journal of Applied Polymer Science 80(5):806 - 814 .
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Hyperbranched polymer/HTPB-PU IPNs were prepared, when HTPB (hydroxyl-terminated polybutadiene) and IPDI (isophorone diisocyanate) were cured into polyurethane (HTPB-PU) at the existence of hyperbranched polymer. Differential scanning calorimetry (DSC) was adopted to study the influence of hyperbranched polymer on thermal properties of HTPB-PU, while IPNs were formed.
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HTPB is mainly used in many solid rocket motors to bind the fuel and oxidizing agent into a solid mass; it is also widely used in many civil industries, such as RIM PU products, casting PU tires, rubber and plastic modifier, electrical insulating seals, electrical potting adhesives,electrophoretic paint, moisture proof paint, wear resisting/cold resisting paint, liners, etc.
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