| 摘要 |
<p>Disclosed herein is a composition for imparting superior fire retardancy and shape-retaining properties to polyester. The composition comprises (i) 55 to 75% by weight of a sodium silicate solution, (ii) 0.5 to 7% by weight of carboxyl methyl cellulose, (iii) 0.7 to 10% by weight of a urethane resin, (iv) 0.7 to 10% by weight of an acrylic resin mixture and (v) the remaining weight percent of water, based on 100% by weight of the composition, wherein (i) the sodium silicate solution consists of Na2? and S1O2 in a molar ratio of 1 : 2.1 to 1 : 2.9, (iii) the urethane resin consists of 70 to 80% by weight of methylene diphenyl isocyanate and 20 to 30% by weight of methylpolyglycol, and (iv) the acrylic resin mixture consists of 36 to 40% by weight of a butyl acrylate monomer, 10 to 13% by weight of methyl methacrylate, 1 to 2% by weight of an emulsifier, 3 to 5% by weight of acrylic acid and the remaining weight percent of water. Disclosed herein are further a method for preparing the composition and a method for applying the composition to a polyester resin. The composition-applied polyester resin is suitable for use as an automobile NVH component, in particular, a sound-absorbing heat -insulation component of an engine room.</p> |
