Room-temperature curing efficient adhesive and preparation method thereof

Abstract

The invention relates to a room-temperature curing efficient adhesive and a preparation method thereof. The room-temperature curing efficient adhesive is composed of a metal primer and a chloroprene rubber adhesive, wherein a base formula of the metal primer comprises the following raw materials by weight: 1200-1500g of chlorinated rubber CR20, 100-200g of general chloroprene rubber CR2321, 1-3g of an anti-aging agent BHT, 200-300g of light magnesium oxide and 3,000-4,000g of industrial methylbenzene; and the chloroprene rubber adhesive comprises the following raw materials by weight: 50-70g of chloroprene rubber A-90, 30-50g of chloroprene rubber M-40, 1-3g of an anti-aging agent WSL, 0.1-0.6g of a red iron oxide pigment, 10-30g of chlorinated rubber R20, 10-50g of fumed silica, 6-8g of light magnesium oxide, 10-40g of terpene-phenolic resin, and 500-800g of a mixed solvent which is composed of methylbenzene and butanone according to the mass ratio of 3 to 2. The room-temperature curing efficient adhesive provided by the invention is high in adhesive strength, stable in quality and good in heat resistance, has good adaptability on metal materials and non-metal materials, and is suitable for large-scale bonding work.

Description

technical field [0001] The invention relates to a high-efficiency adhesive cured at room temperature and a preparation method thereof, belonging to the field of chemistry. Background technique [0002] Many chemical, mining and other equipment are subjected to strong chemical corrosion and solid particle wear during use, which greatly affects the service life, equipment maintenance costs are high, and normal production activities are affected; while rubber has a recognized Good anti-corrosion and wear-resistant effects have been widely used in these fields. It is the most common practice to use a metal skeleton to line a layer of rubber to resist corrosion and wear, and the effect is relatively ideal. For some metal parts with small specifications but complex structures, a layer of rubber can be lined by hot vulcanization by opening molds; but for some large-scale equipment (such as tanks, tanks), it is unrealistic to open molds, and The cost of large-scale flat vulcanizing...

AI Technical Summary

Problems solved by technology

For some metal parts with small specifications but complex structures, a layer of rubber can be lined by hot vulcanization by opening molds; but for some large-scale equipment (such as tanks, tanks), it is unrealistic to open molds, and The cost of large-scale flat vulcanizing machines and vulcanizing tanks is huge, and this method cannot be used for equipment that is not fixed in size. Therefore, it is an inevitable trend for equipment to be lined with rubber at room temperature. At present, there are neoprene adhesives on the market. Nitrile rubber adhesives, polyurethane adhesives and other varieties, but many have problems such as low bonding strength, easy delamination, unstable bonding, and poor heat resistance.

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