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Resin and coating crosslinker mixture
2017-7-11 19:49:01
Resin and coating crosslinker mixture
Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
Apply a thick epoxy to the bonded surface. The resin / crosslinker mixture is improved with a suitable filler and the material is thickened by vigorous stirring until it is applied to the interface between the surfaces so that it can cross any gap and prevent "resin buildup" A sufficiently strong material is applied to one of the bonding surfaces, and the surface is applied with a certain force to bond it to the other bonding surface, and a small amount of material is pressed to the outside.
Before the wetting surface reaches its final cross-linking, the thickened epoxy can be quickly used on the surface of the wetting surface or anything. For the minimum bonding operation, the filler is added to the remainder of the remaining resin / crosslinker mixture to be used. Mix the enough resin / crosslinker for the second step. After the external surface wetting, the rapid increase in the use of filler will reduce the working hours of the mix.
Clamp parts. Clamp the parts with the clamps. The use of a sufficiently large clamp pressure compresses a small amount of the epoxy resin mixture at the junction, indicating that the epoxy has good contact with the coupling. Avoid using clamps that are too tight to avoid pushing the epoxy mixture from the junction too much.
Remove the excess adhesive that is extruded at the junction to prevent it from sticking to the clamp. With a wooden stick made of the ideal tool such as chisel, the blade will be the edge of the excess mortar removed.
Single-step bonding is the direct use of concentrated epoxy resin for the two bonding surfaces, without the need to use pure resin / crosslinking agent wet the bonded surface. We recommend that you use a concentrated epoxy resin only for the needs of a general junction (thinner mix, it can penetrate more surfaces), and you can not use this method at high load junctions or fine junctions or other porous surfaces.
A & quot; laminating & quot; refers to a process term that binds a substantial amount of thin layer, such as a plywood, trim panel, fabric, or sandwich material. A component may consist of the same material or a different material of any layer. The epoxy application and the clamping method vary depending on the laminating method you are using.
Chinese name: Diethyl toluene diamine(DETDA)Diethyltoluenediamine Raw material ：
TDA industrial, Sichuan production
Ethylene (Et) polymer grade, Shanghai production
TEA industrial imports
A reagent grade additives
Because of the large surface area of ??the moisturizing time limit, the application of roller coated epoxy is the most common method. A simple rapid coating method for larger surfaces is to spread the resin / crosslinker mixture on the surface evenly with a plastic scraper. Use a 809 notch scraper when using a thick mixture.
The use of staples or screws is necessary for clamping methods. When you laminate the solid material into a sheet-like solid level, an evenly distributed weight will be the basis for your laminating operation. For those foam or honeycomb sandwich materials you can not use staples or screws to secure it.
Vacuum bags are the most ideal clamping method for pressing large amounts of material into sheets. Through the use of vacuum pumps and plastic sheets, the air is used to perfectly maintain the size, shape or number of layers. In any case the pressure on all areas is very uniform.
Note: First time / re-bonding. The primary bond is related to the chemical chain position of the adhesive layer, such as placing a dampened glass fiber on a mold to press it into a sheet. All of the partially crosslinked epoxy adhesive layers are put together for crosslinking, so that the epoxy resin is chemically linked into a whole. When the epoxy resin cross-linking after the chemical chain capacity reduction, can be a second adhesive.
The second bond is made on the surface of the crosslinked epoxy resin, which is related to the chemical chain of the binder. The adhesive must enter the pores of the surface or grasp the "key" - a concept associated with the surface structure at the bond. The appropriate surface preparation will provide a good texture for the crosslinked epoxy resin.
Any method of clamping can be used, as long as the part of the grip does not move on the line. Common methods include simple clamping, "C" type clamps and adjustable tool clamps, heavy rubber inner tubes, reinforced nylon packaging tapes, suitable for large weight, and are vacuum bag method clamping.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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