Types and introduction of topcoats for color steel plates

Color coated steel plates are classified into the following categories according to their coating finishes:

    Ordinary polyester PE color steel plate,

    Fluorocarbon PVDF color steel plate,

High weather resistance polyester HDP color steel plate (also called high durability polyester color steel plate),

  Silicon modified polyester SMP color steel plate.

Below we have a specific understanding of the performance characteristics, service life, and application areas of the coated color plate.

1. Ordinary polyester PE

Product Introduction

The ordinary polyester color steel plate is a metal paint color plate that is painted on a metal plate with PE polyester coating, and then baked at a high temperature.

Features

PE coating has good adhesion to the material, the color-coated steel plate is easy to process and shape, the price is low, the product is large, and the choice of color and gloss is large. Polyester coatings are not ideal for UV resistance and chalking resistance of the coating film. Therefore, the use of PE coatings is still subject to several restrictions.

Service life

Anti-corrosion years can reach 7-8 years

Application field

Generally used in areas where air pollution is not serious or products that require multiple molding processes.

2. Silicon modified polyester SMP

Product Introduction

The silicon modified polyester color steel plate is a metal baking paint color plate made by using SMP silicon modified resin ester coating to coat the metal plate and then baking it at a high temperature.

Features

The coating film has good hardness, abrasion resistance and heat resistance, as well as good external durability and non-chalking properties, but the gloss retention and flexibility are limited.

Service life

Its anti-corrosion period can be as long as 10-12 years.

Application field

SMP color-coated steel plates are not suitable for occasions that require multiple forming and processing. Most of them are used for roofs and exterior walls of buildings.

3. High weather resistance polyester HDP

Product Introduction

High weather resistance polyester color steel plate is also called high weather resistance color steel plate. It is a metal baking color plate made by using HDP high weather resistance polyester coating to coat the metal plate and then baking it at a high temperature.

Features

Regarding the shortcomings of PE and SMP, British HYDRO company (now acquired by BASF), Sweden's BECKER, etc. in the early 2000s developed HDP polyester coatings that can achieve 60-80% weather resistance of PVDF coatings, which are better than ordinary silicon modified coatings. Polyester coating.

Service life

Its anti-corrosion period can reach 10-15 years.

Application field

It is suitable for light steel structure buildings and flat sloped roofs that require high anti-ultraviolet rays.

4. Fluorocarbon PVDF

Product Introduction

The fluorocarbon color steel plate is a metal baking paint color steel plate made by using PVDF polyvinylidene fluoride coating to coat the metal plate and then baking it at a high temperature.

Features

Due to the strong bond energy between the chemical bond and the chemical bond of PVDF, the coating has very good corrosion resistance and color retention. It is the most advanced product among the color-coated steel plate coatings for the construction industry, and the molecular weight is large and straight. Bond structure, so in addition to chemical resistance, mechanical properties, UV resistance and heat resistance are also outstanding.

Service life

Its anti-corrosion period can reach more than 20 years.

Application field

It is suitable for chemical plants, power plants, steel plants, high-speed railway stations, etc., which require high UV resistance and weather resistance.