News Details
The epoxy coating USES crosslinking agents
2017-7-12 23:11:40
The epoxy coating USES crosslinking agents
Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
The epoxy resin coating is used before using crosslinking agent, with a hot gun to soft epoxy resin (200 F), heating a small area and removing the residue left on the surface of the material. Ventilation should be provided when heating epoxy resins.
Special preparation for a variety of materials. Epoxy resin coated with crosslinking agent in the crosslinking epoxy resin surface amine can produce a kind of wax-like film. It is a by-product of crosslinking and is more pronounced in cold, wet conditions. The amines can interfere with sand paper, and the effects are then adhered to, but it can be easily removed.
Suppose that the surface of any cross-linked epoxy resin forms an amine red change, a good idea is to remove it. To remove the amines, use a clean wash surface (not a solvent) and use rough grinding chips such as the scotch-brite (TM) 7447 versatile manual grinding machine.
Dry the surface with a paper towel before drying it, removing the dissolved amine red. Polish the sand and sand paper into a smooth area. The wet sand can also remove the amines. If use in fresh epoxy resin on the surface of a loose structure, when this kind of loose structure from crosslinked epoxy resin and there is no sand surface, stripped, will make amine red to be removed.
Epoxy resin can be adhered to or coated with epoxy resin without washing or sand. Outside on the epoxy coating with epoxy resin (at the bottom of the paint, paint, varnish, lac, etc.) before use, should wait until the surface of the epoxy resin crosslinking fully, then wash and play sand.
Hard wood for sand with 80 pieces of gravel paper. Rub the teak/oily wood for 15 minutes before applying. The solvent removes the oil on the surface and allows the epoxy to penetrate. The solvent evaporated before applying the epoxy resin.
Chinese name: Diethyl toluene diamine(DETDA)Chinese alias: aryl, aryl diethyl - aryl - methyl-p-phenylenediamine
English name: Benzenediamine, ar, ar-diethyl-ar-methyl-English aliases:Diethyltoluenediamine; ar, ar-Diethyl-ar-methylbenzenediamine;Diethylmethylbenzenediamine;
CAS No. :68479-98-1
EINECS No. :270 -877-4
Molecular formula: C11H18N2
Molecular Weight: 178.28
Boiling point: 310 ℃
Refractive index: 1.581
Flash Point: > 140 ℃
Inchi: InChI = 1/C11H18N2/c1-4-8-6-7 (3) 10 (12) 11 (13) 9 (8) 5-2/h6H ,4-5,12-13H2 ,1-3H3 density : 1.022
Risk Codes: R10; R35
RIDADR: UN 3082
Safety instructions: S2; S26; S39; S61
Packing Group: III
Hazard Class: 6.1
Porous wood - preparation without special needs. If the surface is to be polished, you can use a dull planer or saw blade, 80 mesh grit paper to polish the pores. Remove dust.
Steel, lead - removal of pollution, sand or friction to a bright metallic color, and fresh epoxy resin coated on the surface of the sand. Wait until the first gelation is coated or glued. Aluminum - sand and ready to use the 860 aluminum etch tool kit.
Polyester (fiberglass) - cleaning contaminants with silicone and wax, such as DuPont (TM) 3919S. Play sand can be used to blunt the 80 mesh grit paper.
Plastic - all kinds of bonding. If a plastic is not permeable to solvents such as acetone, epoxy resin will not be able to adhere to it. Such as polyethylene, polypropylene, nylon, organic glass and polycarbonate, flexible plastics belong to this category.
For example, the hard, rigid plastic of PVC, ABS and styrene can provide good adhesion surface treatment and sufficient binding area. In the case of sand, flame oxidation (a rapid movement of the propane torch on the surface, but without melting the plastic), it can improve the adhesion of these plastics. When you don't know if a piece of plastic can be bonded, a good idea is to stick it to it.
Two types of bonding. The second phase is the preferred method for most cases, because it supports the largest epoxy resin seeping into the binding surface and stopping the resin from assembling at the join. When the connection has a minimum load and an overabsorption of the porous surface, it is not a problem to use the single phase bonding. In both cases, epoxy resins have the best binding ability when coated with a roller or brush.
In front of the mixed epoxy resin, check all be bonding parts, to prepare for suitable match and surface, clamp and necessary tools ready for operation, and the need to prevent from any area of material liquid leakage. The terminology used here, the terminology of adhesion and other documents in the WEST SYSTEM are about the adhesion or assembly of the structure, not the adhesion of the appliance.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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