Hot melt butyl adhesive with high cohesion strength and preparation method of hot melt butyl adhesive

Abstract

The invention discloses a hot melt butyl adhesive with high cohesion strength and a preparation method of the hot melt butyl adhesive. The hot melt butyl adhesive comprises raw materials in parts by weight as follows: 20-60 parts of butyl rubber, 10-30 parts of a hot melting enhancer, 1-10 parts of flux, 10-45 parts of a tackifier, 10-60 parts of a plasticizer, 10-60 parts of filler, 10-40 parts of a reinforcing agent, 0.5-5 parts of a coupling agent, 0.1-3 parts of a crosslinking agent, 0.1-3 parts of an assistant crosslinker, 1-5 parts of an antioxidant and 1-5 parts of a light stabilizer. The hot melt butyl adhesive has quite high cohesion strength and good hot melting processability, can be prepared in a manner of melting box-pressure pump-die head casting and has low material requirement, low equipment investment and high production efficiency, and stripping strength between a self-adhesion surface and an adhered surface is high.

Description

technical field [0001] The invention relates to the field of waterproof materials, in particular to a hot-melt butyl rubber with high cohesive strength and a preparation method thereof. Background technique [0002] Building waterproofing is a measure taken from building materials or structures to prevent rainwater from penetrating certain parts of a building. It is mostly used in roofs, underground buildings, underground parts of buildings, and inner rooms that need waterproofing and water storage. buildings etc. According to the measures and means adopted, it is divided into two categories: material waterproofing and structural waterproofing. Material waterproofing relies on building materials to block the passage of water to achieve waterproofing or increase the ability to resist leakage, such as coiled material waterproofing, coating film Waterproof, rigid waterproofing of concrete and cement mortar, etc.; structural waterproofing is to adopt a suitable structural form ...

AI Technical Summary

Problems solved by technology

However, the cohesive strength of butyl pressure-sensitive adhesive is low, which leads to the low peel strength between the self-adhesive surface and the adhered surface of the waterproof membranes currently on the market that use butyl pressure-sensitive adhesive as self-adhesive adhesive, which makes the overlapping parts exist. The risk of being destroyed; in addition, non-asphalt-based hot-melt pressure-sensitive adhesives account for the main market, which can be produced by melt tank-pressurized pump-die casting, with low production equipment costs and mature technology, but butyl Pressure-sensitive adhesives can only be produced by twin-screw feeding extrusion-booster pump-die extrusion. Not only the secondary investment cost of equipment is high, but also the requirements for material technical indicators are high. These factors greatly limit the production of butyl pressure. Promoting the use of sensitive glue

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