Temperature-resistant EVA hot melt adhesive and copolymerization reaction device thereof

Abstract

The invention discloses a temperature-resistant EVA hot melt adhesive and a copolymerization reaction device thereof, and belongs to geotechnical engineering investigation equipment. The EVA hot meltadhesive comprises the following components in parts by weight: 80 to 100 parts of basic resin, 20 to 30 parts of a tackifier, 10 to 22 parts of a viscosity regulator, 5 to 10 parts of an antioxidant,0.5 to 5 parts of a silane coupling agent, 10 to 15 parts of a reinforcing agent, 1 to 8 parts of high-tear-resistance silicone rubber, 5 to 17 parts of high-temperature-resistance silicone rubber and 0.01 to 0.3 part of an inhibitor. In the present invention, through mutual cooperation of the high-tear-resistance silicone rubber, the high-temperature-resistance silicone rubber, the inhibitor, the reinforcing agent, the silane coupling agent, a motor, a cylinder rod, an air pump, a flow dividing pipe, a flow dividing cover, a first one-way valve, a second one-way valve, a hydraulic cylinder and a piston which are added or designed, EVA hot melt adhesive ingredients in the polymerization reaction kettle can be stirred and mixed in all directions in the horizontal direction and the verticaldirection, deposition of the EVA hot melt adhesive ingredients at the bottom of the inner side of the polymerization reaction kettle is avoided, the mixing efficiency and the mixing effect are improved, and EVA hot melt adhesive ingredient reaction is more sufficient.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering investigation equipment, and in particular relates to a temperature-resistant EVA hot melt adhesive and a copolymerization reaction device thereof. Background technique [0002] EVA hot-melt adhesive is a solvent-free, moisture-free, 100% solid-melt polymer. It is solid at room temperature, and when heated to a certain extent, it becomes a liquid adhesive that can flow and has a certain viscosity. It is a light brown translucent body or off-white after melting. The main component of hot melt adhesive, that is, the basic resin is made of ethylene and vinyl acetate copolymerized under high pressure, and then mixed with tackifier, viscosity modifier, antioxidant, etc. to make hot melt adhesive [0003] Copolymerization, also known as copolymerization (reaction), is a polymerization reaction in which several unsaturated or cyclic monomer molecules participate. For example, butadiene ...

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Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the poor heat resistance and tear resistance of common EVA hot melt adhesive, in the environment of relatively high temperature, EVA hot melt adhesive just begins to melt, and glue thread breaks, and causes product stickiness cracks, and the EVA hot melt adhesive ingredients are in the process of polymerization reaction in the polymerization reactor, the ingredients are easy to deposit on the bottom of the inner side of the reactor, resulting in a relatively low efficiency and effect between the EVA hot melt adhesive ingredients, which seriously affects The problem of the quality of EVA hot melt adhesive products, and a kind of temperature-resistant EVA hot melt adhesive and its copolymerization reaction device proposed

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