摘要:
The invention relates to a device and a method for welding two polymer parts via fusion using a heater mat knitted from a resistive wire coated with an insulating varnish, the heater mat being given a final shape. The heater mat is resistive wire having a diameter ranging from 0.2 mm to 0.3 mm, and has approximately parallelepiped meshes, the dimensions of which range from 1.5×3 mm2 to 2.5×4.5 mm2.
摘要:
The conductance between conductive fibers utilized in a composite panel and the surface of the panel is improved by the use of conductive inserts which are pressed into the surface of the panel sufficiently to contact the fibers facilitating electrically connecting the conductive fibers with a ground on the conductive fibers in another panel.
摘要:
In order to achieve an object of stably joining two or more composite materials containing carbon fibers and a thermoplastic resin at a target joining position, joining surfaces of two or more composite materials (11a, 11b) containing carbon fibers and a thermoplastic resin are brought into contact, and an electric current for joining the two or more composite materials (11a, 11b) by Joule heat is fed to the target joining position in a state in which vibration is applied by a vibration generating device (17) to the two or more composite materials (11a, 11b) which are being pressed by a pressing device (13) so as to join the two or more composite materials (11a, 11b).
摘要:
An electrofusion coupling member made of a thermoplastic substance having metallic particles incorporated therein and further comprising an electric resistance heating element disposed therein, an electrofusion coupler device which includes the same, and a method for welding the device to other thermoplastic objects are provided herein.
摘要:
The using of carbon nanotubes to produce a thin film or buckypaper, hereafter referred to as carbon nanotube membrane, which is soaked with epoxy resin or a carbon nanotube-epoxy resin composite adhesive, and then placed between the joining edges of components, where after an electric current is passed through to heat up the carbon nanotube membrane. This leads to the curing temperature of the epoxy resin or carbon nanotube-epoxy resin composite adhesive, thereby hardening the epoxy resin or carbon nanotube-epoxy resin composite adhesive to achieve bonding. This invention utilizes simple equipment, and the method of an electric current passing through for heating, which can rapidly and uniformly heat the epoxy resin or carbon nanotube-epoxy resin composite adhesive, resulting in hardening and bonding. This method is not affected by the environment, and greatly reduces the time and resources required to harden the epoxy resin, and achieves a stronger effect additionally.
摘要:
An electrofusion coupling member made of a thermoplastic substance having aluminum particles incorporated therein and further comprising an electric resistance heating element disposed therein, an electrofusion coupler device which includes the same, and a method for welding the device to other thermoplastic objects are provided herein.
摘要:
Articles containing thermoplastic material are welded together by placing a heating element between an overlapping side edges of the articles to define a weld area between the overlapping side edges with the heating element extending outwardly therebeyond, effecting relative movement between electrodes in contact with the exposed sides of the heating element and the articles while applying current to the electrodes to create a moving localized melt zone, and applying pressure to the melt zone immediately following creation of the zone to fuse the articles to each other and to the heating element.
摘要:
A method for bonding thermoplastic substrates is provided. A thin, porous, resistive heater is provided between layers of thermoplastic substrates to be bonded in the absence of an adhesive. The fabric heater is in intimate contact with the substrates at the joint by application of pressure. When the heater is energized, the thermoplastic material at the joint is melted or softened, and becomes uniformly distributed in the weld. After cooling, the fabric heater remains within the weld area and provides increased reinforcement to the weld bond.
摘要:
Methods of facilitating the adhesive bonding of various components with variable frequency microwave energy are disclosed. The time required to cure a polymeric adhesive is decreased by placing components to be bonded via the adhesive in a microwave heating apparatus having a multimode cavity and irradiated with microwaves of varying frequencies. Methods of uniformly heating various articles having conductive fibers disposed therein are provided. Microwave energy may be selectively oriented to enter an edge portion of an article having conductive fibers therein. An edge portion of an article having conductive fibers therein may be selectively shielded from microwave energy.