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Sichuan Curious New Materials Co., Ltd.

Sichuan Curious New Materials Co. Ltd ..

"Must Understand" Butyl Gum "Crying"
农业部新闻办公室 | 作者: agriculture-100 | 发布时间: 2014-09-24 | 286 次浏览 Source: Ministry of Agriculture Information Office | Author: agriculture-100 | Published: 2014-09-24 | 286 views 分享到: | Share to:
Butyl sealant, based on isobutylene polymer, is one of the four types of sealants with the largest consumption in the world. Has excellent weather resistance, heat resistance, acid and alkali resistance and excellent air tightness and electrical insulation properties. Can be divided into vulcanized, non-vulcanized and hot melt. Among them, non-vulcanized type can be further divided into solvent volatilization type, pre-shaped rubber strip and butyl sealing paste (putty). Solvent volatilization type is made by mixing, cutting and dissolving; pre-formed rubber strip is made by mixing and extruding; sealing paste can be made by dissolving method or three-roller grinding method. Butyl sealant is widely used in various machinery, pipes, glass installation, cable joints and other seals, buildings, hydraulic engineering and other aspects.


Butyl sealant, based on isobutylene polymer, is one of the four types of sealants with the largest consumption in the world. Has excellent weather resistance, heat resistance, acid and alkali resistance and excellent air tightness and electrical insulation properties. Can be divided into vulcanized, non-vulcanized and hot melt. Among them, non-vulcanized type can be further divided into solvent volatilization type, pre-shaped rubber strip and butyl sealing paste (putty). Solvent volatilization type is made by mixing, cutting and dissolving; pre-formed rubber strip is made by mixing and extruding; sealing paste can be made by dissolving method or three-roller grinding method. Butyl sealant is widely used in various machinery, pipes, glass installation, cable joints and other seals, buildings, hydraulic engineering and other aspects.

As we all know, butyl glue itself is a material that is physically synthesized. Hot melt glue that needs to be melted for more than one hundred degrees does not melt itself without a chemical reaction. Butyl gum is one of the materials that are most afraid of oil. Gasoline, diesel, and everything that is oil can melt butyl gum. And some low-quality two-component contains a low-end mineral oil, also called white oil. Some two-component manufacturers in order to reduce costs and cause white oil to exceed standards, then this two-component white oil exceeds the standard with butyl Hollow glass synthesized by glue can easily melt butyl glue and cause tearing.

The second type that indirectly causes tears in insulating glass is a low-quality single-stranded acidic silicone adhesive. During the installation of insulating glass, if the wrong acidic silicone adhesive is selected, the smell of these acidic silicone adhesives can be passed through the two groups. It is also compatible with butyl gum and causes tears. In addition, poor solvents in the wall paint may also cause tearing of the insulating glass.

White oil is a white mineral oil. It is commonly used as a plasticizer. White oil has a low boiling point and is easy to volatilize. When a white oil-containing silicone sealant is used for the external sealing of insulating glass, over time. The white oil will continue to volatilize inward and outward. When it contacts the first sealant butyl sealant of the insulating glass, it will dissolve, which will cause the insulating glass bumps, flow, failure of the insulating glass seal and in low-emissivity glass. The rainbow phenomenon appears, causing great damage to the insulating glass. The content of mineral oil is large, causing butyl gum to flow in the cavity of the hollow glass, and form an oil band on the inner surface of the hollow glass. When white oil enters Low-E insulating glass, a rainbow phenomenon occurs when the film is not corroded.

Preventive measures: Do compatibility test before use to avoid product quality problems.



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