摘要:
Provided is a method for applying pressure to a coating material and a fiber-reinforced plastic using a male-female pair of upper and lower molds and producing a coated fiber-reinforced plastic, wherein: the fiber-reinforced plastic includes at least a first surface A, a second surface B, and an end surface C connecting to the first surface A and the second surface B; the first surface A and the second surface B each face separate molds when pressure is applied to the fiber-reinforced plastic using the male-female pair of upper and lower molds; from the start to the end of pressure application, the coating material first comes into contact with at least part of the first surface A, and then the coating material comes into contact with at least part of at least one of the second surface B and the end surface C, whereby the fiber-reinforced plastic is coated; and any of the two surfaces and the end surface of the fiber-reinforced plastic are coated within the mold through the method for producing a coated fiber-reinforced plastic.
摘要:
An in-situ polymerized type thermoplastic prepreg is provided, which is excellent in productivity, has tack properties and drape properties that allow easy shaping in a mold, is excellent in handling properties, and allows a molded product obtained by curing to have both mechanical properties as high as those of a thermosetting composite and the features of the thermoplastic composite. An in-situ polymerized type thermoplastic prepreg 1 includes reinforcing fibers 2 and an in-situ polymerized type thermoplastic epoxy resin 3 as a matrix resin. The in-situ polymerized type thermoplastic epoxy resin 3 is cured to B-stage, with the weight-average molecular weight being 6,000 or less, and has tack properties and drape properties at 30°C or less, and the in-situ polymerized type thermoplastic epoxy resin after curing has a weight-average molecular weight of 30,000 or more.
摘要:
[Objective] The object of the present invention is to provide a fiber reinforced plastic molded article having favorable close contact properties with reinforcing fibers and superior mechanical strength. [Constitution] A fiber reinforced plastic molded article obtained by molding a fiber reinforced plastic molding material comprising a radical polymerizable resin composition and reinforcing fibers, wherein the radical polymerizable resin composition contains at least a urethane (meth) acrylate resin component (a) containing a urethane (meth) acrylate resin compound represented by the following chemical formula [Chemical 1]:
(in the formula, wherein n is within a range from 2 to 100, X is a compound residue having two or more isocyanate groups, and M contains at least formula [Chemical 2]:
[Chemical 2] -N=C=O
and M other than the above formula [Chemical 2] is a formula [Chemical 3]:
in the formula [Chemical 3], Q represents a mono alcohol compound residue containing ethylene unsaturated groups) and an organic tin compound component (b); and the component (a) and the component (b) are mixed prior to curing.
摘要:
Provided is a continuous fiber-reinforced composite material with an excellent solvent resistance, and a molded article made of such material. The continuous fiber-reinforced composite material comprises a polyamide resin impregnated into continuous fibers; wherein the polyamide resin is composed of a structural unit derived from diamine and a structural unit derived from dicarboxylic acid; 50% by mole or more of the structural unit derived from diamine is derived from 1,3-bis(aminomethyl)cyclohexane; and 30% by mole or more of the structural unit derived from dicarboxylic acid is derived from isophthalic acid.
摘要:
A method for laying a fibre material on a mould (1) surface, in which rovings (9, 13) of the fibre material are laid on the mould (1) surface or on a fibre material already laid on the mould (1) surface, whereby the rovings (9, 13) are rolled from a reel (2, 11) which is held by a movable support means (3, 10, 16) which is being moved in a desired direction along the mould, whereby said support means (2, 10, 16) comprises at least one roller (6, 12, 17) being connected to said movable support means (3, 10, 16) by at least one articulated joint (7, 19) such that said roller (6, 12, 17) holds down laid out rovings (9, 13).
摘要:
Provided are: a molding for which excessive increase in molding mass is limited while the occurrence of warping during manufacture, such as when being released from the die, is limited; and a manufacturing method for said molding. The present invention is a molding (11) provided with a sheet-shaped composite material section (110) formed from a fiber-reinforced composite material containing reinforcing fibers (f1) and a matrix resin (A), and protruding ribs (112a) and (112b) formed directly on a first surface (111) of the composite material section (110) and containing a thermoplastic resin (B), wherein the ribs (112a) and (112b) intersect with each other on the first surface 111, and the mean width t, mean height H and the proportion occupied on the first surface 111 are within specified ranges. The present invention is also a manufacturing method for the molding (11) comprising a composite material section-forming step for forming the composite material section (110), and a rib-forming step for forming the ribs (112a) and (112b) so as to satisfy the above conditions.
摘要:
A composite structure (10) provided with a first composite member (11), a second composite member (12) joined to the first composite member (11), and a corner fillet section (13) disposed in a corner section (15) formed by the first composite member (11) and the second composite member (12), wherein the rigidity of the corner fillet section (13) is adjustable, and adjusting the rigidity of the corner fillet section (13) adjusts peeling stress imparted to the corner section (15). Reducing the rigidity of the corner fillet section (13) reduces the peeling stress imparted to the corner section (15).
摘要:
[Solution] An artificial defect material 10 for an FRP structure is provided with: a plurality of layers of reinforced fiber base materials 14; a matrix resin 16, and a heat-resistant high-linear expansion material 20. While the FRP structure is formed at a high temperature, the heat-resistant high-linear expansion material 20 disposed between the layers thermally expands to form a predetermined shape between the layers of the reinforced fiber base materials 14. At normal temperature after the forming, the heat-resistant high-linear expansion material 20 thermally shrinks to form a void between the reinforced fiber base materials 14 due to a shrinkage difference. The heat-resistant high-linear expansion material 20 has a coefficient of linear expansion having a value higher than the coefficient of linear expansion of the FRP structure by a predetermined value or higher, and has heat resistance and shape-retaining properties durable to the forming temperature.