PVC eco-friendly products aging resistance series issues——Guangyuan Ruifeng New Materials

Category: PVC products

Release Time: 2020-06-09

Summary: We all know that the aging process of materials is very complex and is affected by many factors. For a material to be durable and resistant to aging, in addition to the base material itself being strong (having a good foundation), the added pigments, auxiliaries, etc., must be carefully selected. Otherwise, using unsuitable ones will accelerate the aging of the material.

We all know that the aging process of materials is very complex and is affected by many factors. For a material to be durable and resistant to aging, in addition to the base material itself being strong (having a good foundation), the added pigments, auxiliaries, etc., must be carefully selected. Otherwise, using unsuitable ones will accelerate the aging of the material. (PVC environmentally friendly products, environmentally friendly crosslinking agents, environmentally friendly plasticizers)

I. PVC Product Anti-aging Management Plan "Pigment (Coloring)"

In the rigid PVC outdoor roof tile formula, pigments not only provide the color needed for the product, but also ensure the color's resistance to aging. Although color fading or discoloration does not necessarily mean that the product's physical properties have deteriorated, if the color does not have a certain degree of retention and changes rapidly during use, it loses the decorative function of the initial color choice, and the aesthetic effect is affected.

Color aging is also a manifestation of product aging. It will be affected by various factors (physical, chemical, biological, etc.) during use, and even during processing. Choosing unsuitable pigments will accelerate this process. Therefore, when designing the formula, the characteristics of PVC materials, the processing process, and the usage environment should be considered comprehensively to choose suitable pigments.

II. Introduction to Common Pigment Types

The commonly used colors are red, yellow, blue, white, and black, as well as variations or combinations of these five colors. Pigments used for coloring are generally divided into inorganic pigments and organic pigments. (PVC environmentally friendly products, environmentally friendly crosslinking agents, environmentally friendly plasticizers)

(I) Inorganic Pigments

1. Carbon black: The most commonly used and most effective black pigment. There are many models, and Cabot and Mitsubishi are the main manufacturers for coloring.

2. Titanium white: Titanium dioxide, the most commonly used and most effective white pigment. It is divided into Type A and Type R titanium white.

3. Iron oxide series: Mainly represented by iron red, iron yellow, and iron black.

4. Chromium series: Mainly represented by chromium yellow, chromium green, and chromium red.

5. Ultramarine series: Sulfur-containing silicate compounds, mainly represented by ultramarine blue.

6. Others: Titanium yellow, cobalt blue, aluminum powder, silver powder, and pearlescent types, etc., are less commonly used. (PVC environmentally friendly products, environmentally friendly crosslinking agents, environmentally friendly plasticizers)

(II) Organic Pigments

1. Azo series: Pigments containing an azo group in the molecule, mainly red and yellow colors. Representative products include Pigment Red 48:1 (sun-resistant bright red) and Pigment Yellow 62.

2. Phthalocyanine series: A class of macrocyclic compounds containing metal elements, mainly blue and green colors. A representative product is Pigment Blue 15:3.

3. Heterocyclic series: This type of pigment has good coloring power and light resistance, mainly red and yellow colors. Representative products are Pigment Red 254 and Pigment Yellow 110.

4. Others: Some organic acid metal compounds, condensed ring ketone metal complex pigments, etc.

Generally speaking, inorganic pigments are more resistant to light than organic pigments, and organic pigments are more vibrant than inorganic pigments. However, other influencing factors, such as the base material, heat resistance, and acid resistance, should also be considered when selecting pigments in practice. (PVC environmentally friendly products, environmentally friendly crosslinking agents, environmentally friendly plasticizers)

Keywords: PVC eco-friendly products aging resistance series issues——Guangyuan Ruifeng New Materials

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