首页>
外国专利>
Improvement in structural material unitario, and process for the production of a structural material unitario
Improvement in structural material unitario, and process for the production of a structural material unitario
展开▼
机译:结构材料统一性的改善以及结构材料统一性的生产方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
1512084 Laminates FORMICA INTERNATIONAL Ltd 17 June 1976 [19 June 1975] 26121/75 Heading B5N A unitary structural material comprises a preformed thermoset plastics laminate sheet secured to a water-set cementitous composition through an intermediate porous fibrous sheet of high wet strength, the intermediate porous fibrous sheet being bonded to the preformed thermoset plastics laminate sheet by an adhesive and being keyed to the cementitious material as a result of having been embedded in the cementitious compositions before watersetting thereof. The thermoset plastics laminate, which may have a decorative appearance, is produced by assembling a stack of a plurality of thermosettable resin impregnated organic fibrous sheets and then applying heat and pressure to effect consolidation. A preferred laminate comprises an alpha cellulose paper overlay and a printed paper decorative layer each impregnated with a thermoset melamine formaldehyde resin and a core layer comprising a plurality of Kraft-paper sheets impregnated with a thermoset phenol-formaldehyde resin. The fibrous sheet which may be made of synthetic polymer, cellulosic, glass or asbestos fibres, has a tensile strength when completely wetted by water which is 20% or more of its dry tensile strngth, and may be woven or non- woven. The adhesive which may be applied either to the laminate and/or to the fibrous sheet may be a phenol-formaldhyde, ureaformaldehyde, epoxy or polyvinyl alcohol resin. The cementitious. composition may comprise plaster, inorganic particle/sodium silicate mixtures, lime or cement mortar or concrete, and may contain reinforcing materials, e.g. chopped glass fibre strands, reticulate or rod reinforcements. The cementitious composition may be foamed and/or include light-weight aggregate, e.g. vermiculite, expanded perlite, powdered fly-ash or expanded synthetic polymer beads, the surface of the laminate bonded to the fibrous sheet may be roughened by mechanical abrasion or sand-blasting prior to bonding. A discontinous primer layer, e.g. of a polymeric latex or epoxy resin, may be provided between the fibrous sheet and cementitious compositions. The fluid cementitious composition may be applied to the surface of the fibrous sheet adhesively bonded to the laminate positioned decorative surface downwards on or in a mould or jig, or the fluid cementitious layer may be poured into a mould and the laminate having bonded thereto the fibrous sheet, positioned thereon. Alternatively two composite boards each comprising a laminate with a fibrous sheet adhesively bonded thereto may be positioned in spaced apart relationship with their fibrous sheet surfaces facing towards each other and fluid cementitious composition introduced between them.
展开▼
机译:1512084层压板FORMICA INTERNATIONAL Ltd 1976年6月17日[1975年6月19日]标题B5N一种整体结构材料,包括一种预成型的热固性塑料层压板,该层压板通过高湿强度的中间多孔纤维板固定在水硬性胶结组合物上,多孔纤维片材通过粘合剂粘结到预成型的热固性塑料层压片材上,并且由于在其水固化之前已经被嵌入水泥组合物中而被键接到水泥材料上。通过组装由多个可热固性树脂浸渍的有机纤维片的堆叠,然后施加热量和压力以实现固结,可以生产可具有装饰性外观的热固性塑料层压板。优选的层压材料包括α纤维素纸覆盖层和印刷纸装饰层,每个印刷纸装饰层都浸渍有热固性三聚氰胺甲醛树脂,并且芯层包括多个浸渍有热固性酚醛树脂的牛皮纸片材。可以由合成聚合物,纤维素,玻璃或石棉纤维制成的纤维片材在被水完全润湿时具有其干拉伸强度的20%或更多的拉伸强度,并且可以是织造的或非织造的。可以施加到层压材料和/或纤维片上的粘合剂可以是苯酚-甲醛,脲醛,环氧或聚乙烯醇树脂。水泥的。该组合物可以包含灰泥,无机颗粒/硅酸钠混合物,石灰或水泥砂浆或混凝土,并且可以包含增强材料,例如水泥。短切玻璃纤维线,网状或棒状增强材料。水泥组合物可以是泡沫的和/或包括轻质的骨料,例如水泥。石,膨胀珍珠岩,粉状粉煤灰或膨胀的合成聚合物珠粒,可以在粘结之前通过机械研磨或喷砂处理使粘结在纤维板上的层压板表面变粗糙。不连续的底漆层,例如可以在纤维片和胶结组合物之间提供一层聚合物胶乳或环氧树脂。可以将流体胶凝组合物施加到在片材或夹具上或其中向下向下粘结定位到装饰层的层压板的纤维片材的表面上,或者可以将流体胶凝层倒入模具中,并且已经将其粘合到纤维上的层压体放置在上面的纸张。或者,可以将两个复合板放置成间隔开的关系,其中每个复合板都包括粘合有纤维片的层压板,它们的纤维片表面彼此面对,并且在它们之间引入了流体胶结组合物。
展开▼