The present invention relates to a method for thermally activating a functional layer of a coating material, preferably an edge material, wherein the method comprises the following steps: providing the coating material; feeding the coating material to a device for thermally activating a functional layer of the coating material; and thermally activating the functional layer of the coating material, wherein the thermal activation of the functional layer of the coating material occurs by microwaves which are generated by at least one semiconductor wave generator. The present invention also relates to a device for thermally activating a functional layer of a coating material.

The present invention provides an applicator for thermally activating a functional layer of a coating material, comprising: a base body designed to guide the coating material in a running direction, wherein the base body is able to guide electromagnetic waves in the direction of the guided coating material, wherein a dielectric is arranged inside the base body and the dielectric is formed of granular material. The present invention also provides a device for thermally activating a coating material, a use of a dielectric, and a method for thermally activating a functional layer of a coating material.

The present invention relates to a method for thermally activating a functional layer of a coating material, preferably an edge material, wherein the method comprises the following steps: providing the coating material; feeding the coating material to a device for thermally activating a functional layer of the coating material; and thermally activating the functional layer of the coating material, wherein the thermal activation of the functional layer of the coating material occurs by microwaves which are generated by at least one semiconductor wave generator. The present invention also relates to a device for thermally activating a functional layer of a coating material.

A high temperature carbonization furnace has a cavity, at least two microwave units and a control unit. Each microwave unit is disposed along a processing path of the cavity. The control circuit receives signals of temperature sensors distributed on the processing path of the cavity. The control unit generates controls signals to control magnetrons of the different microwave units to be turned on/off, or to control powers of the magnetrons of the different microwave units, such that a location of the processing path, on which the microwave unit disposed, can attain an expected temperature condition. Further, the temperatures in the cavity can be adjusted precisely, such that the temperature distribution in the cavity is uniform, the uniformity for heating the processing object can be increased, and the temperature gradient of different temperature control regions can be controlled and adjusted, so as to achieve the advantage of adjusting and controlling the temperature condition of the processing path according to the requirement of the processing object.

A fiber pre-oxidization device of the present disclosure basically has a transmitting unit and a microwave processing unit. The microwave processing unit is installed with at least one magnetron and a gas supplying unit, wherein the magnetron is disposed at an oven body of the transmitting unit, and the gas supplying unit is connected to the oven body. By focusing the microwave, an ultra-fast pre-oxidization process is applied on a fiber yarn bunch which continuously passes the oven body, and thus the fiber yarn bunch is processed to form an oxidation fiber yarn bunch. Thus, not only an oxidization time of an oxidation fiber can be reduced, but also the shell-core structure of the oxidation fiber can be reduced. Even, the oxidation fiber has no obvious shell-core. Accordingly, relatively positive and reliable means for increasing the performance of carbon fiber are provided.

Microwave irradiator 12 is attached to a furnace main body of a heating furnace 11 having microwave permeability. A running passage for passing a fiber member F which is the object to be heated is formed inside the heating furnace 11. A first tubular member 13 made of a first microwave heat-generating material absorbing microwave energy and generating heat is rotatably disposed around the running passage. A second tubular member made of a second microwave heat-generating material absorbing microwave energy and generating heat is disposed in the first tubular member 13. The fiber member F is heated and calcined while running the fiber member F containing carbon in the running passage of the second tubular member 14.

A device for heat-treating products using microwaves includes an enclosure (2), a drum (3) having at least one portion mounted inside the enclosure (2), a spacing (4) defined between the enclosure (2) and the drum (3), a support (5) positioned at least partially in the spacing (4) and designed to receive and transport products to be treated, and at least one module (6) for applying microwaves to the products, designed to introduce microwaves into the spacing (4). The drum (3) has a prism shape, extending according to the axis (30) of the drum (3), and including a plurality of sides (31; 31; 31) extending parallel to the axis (30). The enclosure (2) includes, internally, several planar surfaces (20; 20; 20) each oriented towards one (31; 31; 31) of the sides of the drum (3) and extending parallel to the side of the drum.

Systems and methods are provided for chokes for microwave radiation. One embodiment is an apparatus that includes a choke assembly. The assembly includes a first choke plate, and a second choke plate. The assembly also includes a first layer disposed at a surface of the first choke plate. The first layer includes a material that attenuates microwave radiation via dielectric heating by converting the microwave radiation into heat, and a substance, disposed between the material of the first layer and the gap, that is transparent to the microwave radiation. The assembly further includes a second layer disposed at a surface of the second choke plate that faces the first layer. The second layer comprises the material that attenuates the microwave radiation via dielectric heating by converting the microwave radiation into heat, and the substance, disposed between the material of the second layer and the gap.

Systems and methods are provided for chokes for microwave radiation. One embodiment is an apparatus that includes a choke assembly. The assembly includes a first choke plate, and a second choke plate. The assembly also includes a first layer disposed at a surface of the first choke plate. The first layer includes a material that attenuates microwave radiation via dielectric heating by converting the microwave radiation into heat, and a substance, disposed between the material of the first layer and the gap, that is transparent to the microwave radiation. The assembly further includes a second layer disposed at a surface of the second choke plate that faces the first layer. The second layer comprises the material that attenuates the microwave radiation via dielectric heating by converting the microwave radiation into heat, and the substance, disposed between the material of the second layer and the gap.

Microwave irradiator 12 is attached to a furnace main body of a heating furnace 11 having microwave permeability. A running passage for passing a fiber member F which is the object to be heated is formed inside the heating furnace 11. A first tubular member 13 made of a first microwave heat-generating material absorbing microwave energy and generating heat is rotatably disposed around the running passage. A second tubular member made of a second microwave heat-generating material absorbing microwave energy and generating heat is disposed in the first tubular member 13. The fiber member F is heated and calcined while running the fiber member F containing carbon in the running passage of the second tubular member 14.