Halogen Free Flame Retardant Manufacturer

▼ Formulation for Fire Suppressant Coatings
Source: | Author:presafer | Publish time: 2016-03-02 | 2940 Views | Share:
The key ingredients of fire suppressant coatings vary depending on the type of coating. In addition to the resin or binder, ablative coatings, or sacrificial coatings designed to reduce the rate of burn, usually contain fire retardant chemicals such as aluminum trihydrate or antimony oxide. Intumescent coatings contain the resin and approximately 15 other ingredients. The three key active components are the promoter or catalyst (typically a phosphate salt such as ammonium polyphosphate), a char former (often pentaerythritol) and a blowing agent (usually a melamine derivative).

Fire retardant coatings contain only a fraction of the amount of some of the ingredients found in fire resistant coatings. “It is difficult to maintain traditional paint characteristics when adding larger quantities of flame retardant chemicals into a formulation,” notes Ganguly. “In particular, if too much retardant, generally a phosphate, is used, blending and spraying equipment can become clogged.” The use of activated carbon particles is being investigated, but this material is a challenge to keep in suspension.

In general, intumescent coatings differ in how the fire retardant chemical is formulated to create char growth. “All of the ingredients are important because they interact with one another to achieve the desired overall performance.

For fire resistant coatings, selecting the appropriate resin for a given formulation and application is critical. The resin is directly related to adhesion ability and therefore to durability. Different resins react at different temperatures, and the right resin must be chosen so that the right char is produced at the right time.”

There are two main types of resins used in these intumescent coatings – vinyl acrylics and epoxies. Waterborne (latex) vinyl acrylic formulations are typically used for interior applications. Because the ingredients have some water solubility, the water resistance and general exterior durability of these formulations is affected. Solvent based vinyl resins and 100% solids epoxies find use in external applications where weathering can occur. Epoxies in particular are finding use in offshore oil platforms and petrochemical facilities where there is a potential for hydrocarbon fires and weathering can be a significant issue.

Formulations of each type of coating may also vary according to the substrate on which they are intended to be used. Changing of formulations for different substrates may or may not be required and is determined by performance, Some coatings are able to work on multiple substrates, while others may require changes.

The challenge today is to create higher performing flame retardant and resistant coatings that behave more and more like traditional paint with regard to appearance and application. There are three characteristics need to be optimized. Fire suppressant coatings must be cost effective and provide the expected level of performance with regard to fire protection and durability, and last, easy to apply.

You may like to know

In homes, office and public buildings, if there is the building material without protection, once breaking out of fire, the building material such as steel structures, metal sheets, wood, plaster and concrete will gradually lose intensity and become easy to collapse. However, if these building material are coated with special coating, then the heat would be blocked, which will lengthen the survival time.>>>

Flame retardant for texile.

According to the research on the fire causes, improper textile will help fire spread. Now in the world, there have been the fire protection requirements regulated indomestic and foreign standard. Different end use of textile complies with different flame retardant requirements. For example, in USA, the textiles used in the automotive component must pass FMVSS 302. In Europe, the textile used in building must satisfy ISO 13501. Therefore, it will be wise to choose the flame retardant based on the textile’s end uses.>>>

Flame retardant for potting material.

Fireproof sealing and potting material are widely used in construction, electric and electronics, Flame retardant can extend the ignited time of the material and maximum inhibit the flame spreading speed.

Flame retardants for plastics.

Nowadays, plastic has been to the indispensable part in our life, and due to the potential risk of fires, there is the wide needs on flame retardancy .Generally speaking, flame retardants used in these applications may obviously reduce the heat deflection temperature of the plastic and take effect on other properties like mechanical properties and electrical properties. Presafer flame retardants not only has high efficiency but also take other properties into consideration.>>>