摘要:
The instant application discloses, among other things, ways to manufacture reduced density thermoplastics. A rapid foaming process which may create a polymer product by saturating thermoplastic sheet or preforms, heating, and then forming into final shape, is described. The polymer product may include an integral solid skin. This method may be utilized with any thermoplastic. The material handling, saturation methods, and end products are also described.
摘要:
The instant application discloses, among other things, ways to manufacture reduced density thermoplastics. A rapid foaming process which may create a polymer product by saturating thermoplastic sheet or preforms, heating, and then forming into final shape, is described. The polymer product may include an integral solid skin. This method may be utilized with any thermoplastic. The material handling, saturation methods, and end products are also described.
摘要:
Procedimiento de fabricación de materiales celulares de matriz termoplástica no reticulada con densidades relativas menores a 0.2 con índices de anisotropía superiores a 1.5 tanto en celda abierta como parcialmente interconectada y con un módulo elástico relativo en compresión superior a 0,6 MPa/(kg/m3) un módulo de cizalla relativo superior a 0,18 MPa/(kg/m3) y un esfuerzo de colapso superior a 0,010 MPa/(kg/m3),), que comprende las etapas de: mezcla y granceo de al menos un polímero termoplástico con agente espumante químico y al menos un tipo de nanopartícula formando un material precursor (5) (A) introducir el material precursor (5) obtenido, en un molde de expansión unidireccional con sistema de retención de la expansión (B) - elevar la temperatura del molde y aplicar presión al molde (C1 ) liberar la presión (C2) para lograr la expansión (C3) del material, - enfriar el molde (D), y - desmoldear la lámina obtenida (E).
摘要翻译:本发明涉及一种制备具有相对密度小于0.2的非交联热塑性基体的多孔材料的方法,在开孔和部分互连的电池中各向异性指数大于1.5,并且具有相对弹性模量 压力大于0.6MPa /(kg / m 3),相对剪切模量大于0.18MPa /(kg / m 3),塌陷应力大于0.010MPa /(kg / m 3)),包括以下步骤: :将至少一种热塑性聚合物与化学发泡剂和形成前体材料(5)的至少一种类型的纳米颗粒混合并切割(A); 将获得的前体材料(5)引入具有膨胀保持系统(B)的单向膨胀模具中; 提高模具的温度并向模具(C1)施加压力; 释放压力(C2)以实现材料的膨胀(C3); 冷却模具(D); 并脱模获得的片(E)。
摘要:
A method of producing a laminated body of structural thermoplastic foam, the method comprising the step of successively extruding a plurality of foam layers from an extrusion die, each next layer being extruded onto a previously extruded layer, to form a stack of mutually bonded layers.
摘要:
An improved energy absorbing member comprising, an thermoplastic cellular polymer in contact with a structural element such as a metal guard rail or automotive door, wherein the cellular polymer has an average cell size of at least about 0.75 mm and at least one of C E /C T , C V /C T and C H /C T is about 0.25 to about 0.4 said one of C E /C T , C v /C τ and C H /C T having a compressive efficiency of at least 70% at a 60% strain, C E , C v and C H being the compressive strength of the cellular polymer in each of three orthogonal directions E, V and H where one of these directions is the direction of maximum compressive strength in the foam and C x equals the sum of C E , C v and C H .
摘要:
Multilayer foam-film composite structures in which the cells of at least one foam layer have an anisotropic orientation exhibit at least one enhanced property of toughness, tear resistance and puncture resistance in comparison with a foam-film composite structure alike in all aspects except for the anisotropic orientation of the cells of at least one foam layer.
摘要:
A laminated sheet comprising a thermoplastic resin foamed sheet and a reinforcing sheet which is laminated in one piece on one side of the foamed sheet, characterized in that the reinforcing sheet comprises a non-woven fabric comprised of non-melting fibers entangled with one another and a thermoplastic resin bonding the fibers to one another, and that the thermoplastic resin foamed sheet has an aspect ratio Dz/Dxy of a foam thereof of 1.2 or more and has an expansion ratio of 5 to 50 cc/g. The laminated sheet is advantageous in its being lightweight and also is excellent in flexural strength, compression strength, thermal formability and dimensional stability, and thus can be suitably used for an interior material, an insulating material, a cushioning material and the like for a vehicle.