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PC strand is classified according to the number of steel wires in a strand: 2 wire strand, 3 wire strand, 7 wire steel strand [1] and 19 wire steel strand. It can be classified according to the surface morphology and can be divided into: smooth steel strand, scoring strand, mold pulling strand (compact), coated epoxy resin steel strand.
Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed. Because of these properties, polycarbonates find many applications.
Conversely, when the novolac epoxy resin content exceeds 45 weight percent, the viscosity of the epoxy resin composition escalates, thereby diminishing its workability. [ 7 ] DGEBA exhibits bifunctionality in its epoxy groups, resulting in relatively low thermomechanical properties and a high linear thermal expansion coefficient, attributable ...
Coating material (after curing) should have a thickness of 30–130 μm (0.0012–0.0051 in) when using acrylic resin, epoxy resin, or urethane resin. For silicone resin, the coating thickness recommended by the IPC standards is 50–210 μm (0.0020–0.0083 in).
Epoxy is the family of basic components or cured end products of epoxy resins. Epoxy resins, also known as polyepoxides, are a class of reactive prepolymers and polymers which contain epoxide groups. The epoxide functional group is also collectively called epoxy. [1] The IUPAC name for an epoxide group is an oxirane.
Difunctional versions tend to give flexibility and thus toughness to epoxy resin systems. [4] [5] [6] Studies have been done on the cured properties of epoxy systems using different functionality polyetheramines. [7] As epoxy curatives, they may then be further formulated into CASE applications: coatings, adhesives, sealants, and elastomers.