Title:
【発明の名称】実質的にボイドのない繊維強化複合材料製品の製造に使用するのに適する粒状熱可塑性ポリマーを含む改良された予備含浸材料の製造
Document Type and Number:
Japanese Patent JPH01501233
Kind Code:
A
Abstract:
An improved multifilamentary fibrous material is formed having particles of a matrix-forming thermoplastic polymer substantially uniformly dispersed among adjoining filaments in the absence of fusion bonding. The polymer particles initially are dispersed in an aqueous medium containing an effective amount of a dissolved polymeric binding agent and the viscosity of the medium subsequently is substantially increased to at least 50,000 cps. to form a gelled impregnation bath having a plastic flow characteristic with shear-thinning behavior wherein the polymer particles are substantially uniformly suspended. The resulting impregnation bath is caused to flow between the adjoining filaments of the multifilamentary fibrous material with a concomitant viscosity reduction which aids in the incorporation of the polymer particles. The concentration of the aqueous medium in the product is controlled to yield a uniform, handleable, drapable, tacky, and highly stable product. Upon the application of heat and pressure the improved product can be transformed into a fiber-reinforced composite article wherein the solid particles form the matrix phase.
Inventors:
Dike Star House Robert
Dike Star House Joel A
Dike Star House Joel A
Application Number:
JP50064588A
Publication Date:
April 27, 1989
Filing Date:
November 05, 1987
Export Citation:
Assignee:
BASF AKTIENGESELLSCHAFT
International Classes:
B29B15/14; B29B15/12; B29C70/06; B29C70/10; B29C70/54; C08J5/04; C08J5/24; (IPC1-7): C08J5/04; B29C67/14; B29B15/14
Attorney, Agent or Firm:
Minoru Nakamura (4 outside)