摘要:
A twin screw extruder (10) according to the present invention is a twin screw extruder (10), in which a reinforcing fiber is fed through an input port (18) into a molten thermoplastic resin having been formed in a resin feed part (13) and the reinforcing fiber and the molten thermoplastic resin pass through a kneading part (15) so that a fiber-reinforced resin composition is manufactured, wherein the kneading part (14) is provided at the discharge-side end part of the extruder (10); a conveying part (14) is provided between the input port (18) and the kneading part (15), and tip clearance (Sc) of a screw element (12b) configuring the conveying part (14) is larger than screw clearance (Ss).
摘要:
Foamed polyester extrusion equipment has two co-rotating screws defining with an internal walls of an insulated frame, first degassing zone between a feeding zone at a feeding inlet for polyester and a first tight zone, a second degassing zone downstream of the first degassing zone, foaming agent inlet zone downstream of the second degassing zone and a pumping end zone for melted material downstream of the foaming agent zone. The first degassing zone carries out forced atmospheric degassing at lower temperature and has a first vent stack adjacent the first tight zone. The second degassing zone carries out vacuum degassing at a temperature equal to or greater than the melting point of the treated polyester material. The first degassing zone has, upstream of the first vent stack, a nozzle for inlet of preheated nitrogen gas to entrain vapours.
摘要:
The invention relates to a method for manufacturing a composite product comprising organic natural fiber material and matrix material, wherein the method comprises mixing the organic natural fiber material with the matrix material in a primary mixing stage to form a mixture. The primary mixing stage comprises a contacting step in which the organic natural fiber material comes in contact with the matrix material that is at least partly in a form of melt, and compression ratio of the organic natural fiber material is less than 8. The method further comprises forming a composite product comprising the mixture. Further, the invention relates to a composite product, a use of the composite product, and a system for manufacturing a composite product.
摘要:
This kneading rotor (1) is rotatably disposed about a horizontally oriented shaft center, the kneading rotor including at least two or more of kneading flights (7) that are disposed about the shaft center and knead a material. In a cross-section perpendicular to the shaft center of the kneading rotor (1), the kneading flights (7) are provided with working faces (9) that face the material when the kneading rotor (1) is rotated. Recesses (10) where a part of the working faces (9) are partially recessed radially inward are formed on the working faces (9) of the kneading flights (7).
摘要:
A composite molding material formed by kneading at least glass wool into a thermoplastic resin has such a feature that the glass wool in the composite molding material has a fiber diameter of 1 to 7 μm, an average fiber length of 30 to 300 μm, and an aspect ratio of not less than 10.
摘要:
A resin composition comprising a polymer obtained by reacting polyethylene terephthalate with polycarbodiimide, wherein the decomposition rate of polycarbodiimide is from 1% to 40%, has a low decomposition rate of carbodiimide. The resin composition is capable of producing a film having excellent hydrolysis resistance.
摘要:
The invention relates to a method for direct, continuous modification of polymer melts with additives in the side stream and is distinguished by a very high degree of flexibility in product change-overs.
摘要:
The present invention relates to a process for the preparation of a composite material from a particulate material comprising at least two thermoplastic polymers and a fibrous material having a density of from 150 to 550 kg/m3, comprising the steps of: a) blending the particulate binder material and the fibrous material, and b) heating the blended material obtained in a) to a temperature at or above the glass transition temperature (Tg) of at least one of the thermoplastic polymers, and c) shaping the heated material under pressure, to obtain a composite material. The invention further relates to the composite material thus obtained, and to its use as building material, structural or decorative sheet material, furniture material, and/or concrete sheeting material, and/or sound deadening material.
摘要翻译:本发明涉及一种从包含至少两种热塑性聚合物和密度为150至550kg / m 3的纤维材料的颗粒材料制备复合材料的方法,包括以下步骤:a)将颗粒 粘合剂材料和纤维材料,以及b)将在a)中获得的共混材料加热到至少一种热塑性聚合物的玻璃化转变温度(Tg)以上的温度,和c)在加压下成形加热的材料, 以获得复合材料。 本发明还涉及由此获得的复合材料及其作为建筑材料,结构或装饰片材,家具材料和/或混凝土片材材料和/或消音材料的用途。
摘要:
An extruded composite adapted for use as a building material includes a core having a base polymer and a filler material in a substantially homogeneous mixture and a polymeric capstock modified with an elastomer and/or a plastomer. To improve adherence of the polymeric capstock to the base polymer, the capstock can include a capstock polymer that is similar or substantially similar the base polymer. Additionally, various additives may be mixed with the capstock material to improve visual aesthetics of the product and performance of the building material, especially over time.