Pigments are used to color everything from paints to plastics, but some colors work better than others, depending on the desired effect. Plastic pigments are often used in plastic manufacturing as well as other industries, so knowing which pigments are best for each project can be extremely useful. This article will go over what some of the popular types of plastic pigments are, as well as how they impact your final product’s color and appearance.
High Molecular Weight Pigments.
Pigment Green 7 is a high molecular weight pigment that has been used for many years in plastics. Also known as PGA or pigment manufacturers in gujarat, it is technically classified as a triaryl carbonium salt. In its pure form, Pigment Green 7 has excellent light and weather resistance. This stability also makes it highly suitable for use with other colors or clear resins. When added to base resin, pigments like PGA will greatly enhance heat and chemical resistance properties, increasing impact strength and improving transparency properties. The most common uses for Pigment Green 7 include traffic signs, toys, electronics casings and automotive applications.
Thermosetting Plastic Pigments.
Thermosetting plastics have very low molecular weight and can be dissolved in organic solvents. As such, they tend to be used with paints rather than plastics. Popular examples include Benzoin Resin (used in lacquers) and Dicyandiamide (dye for textile printing). They usually come as powders or waxes. The most common Thermosetting pigment is Pigment Green 7, which is used widely as a cheap pigment in lacquers and also has some use as a food coloring. It’s toxic, though not quite as much so as other pigments. It’s banned from cosmetics due to its toxicity. Another example is Sudan Red G, which was once widely used in oil paints but has been phased out due to health concerns—it’s still found in artists’ oil paint substitutes though it should never be ingested by anyone under any circumstances.
Sheet Form Pigments.
The most common form that plastic pigment is offered in is sheet form. It’s typically available in white or off-white and it can be custom mixed to create any color you need. Sheet pigment is easy to apply and can be used on a variety of surfaces including PET, ABS, PP, PVC and PMMA plastics. It’s often used for applications such as water bottles and blister packaging. As a bonus, sheet pigment is more affordable than other forms of plastic pigments. If you’re looking for something simple and cost-effective, then sheet pigment might be right for your project.
Liquid Form Pigments.
If you don’t want your new sneakers to end up looking like granny’s couch, avoid liquid pigment dyes. Liquid pigments can change the chemical composition of a material which can affect its longevity and strength. Pigment manufacturers claim that their products mix easily with other substances and will not harm leather or rubber; however, there is very little independent research on these claims.
The biggest problem with liquid pigment dyes is that they often require a large amount of water to be mixed properly. The water can weaken certain materials, especially if it contains any impurities from previous use in another product. As for safety concerns, most studies have shown that direct contact with liquid dye does not cause any lasting damage. However, breathing in particles from dyed materials could lead to long-term health problems such as asthma or cancer if inhaled over time. Also, read What Are The Five Stages Of The Diamond Making Process?
Dispersions Or Concentrates.
A pigment or dye can come in either a concentrated form (called a dispersion) or an already diluted and ready-to-use form (called a concentrate). Dispersions and concentrates both offer their advantages. Concentrates tend to offer more variety in color selection, but also require that you carefully prepare your mixture for use. As such, they’re better suited for individuals who want to experiment with mixing their paint colors from scratch. On the other hand, if you prefer not to mix up paints yourself, dispersions may be your better choice. The downside is that most dispersions only come in a white base; therefore, if you want a vivid color it may be easier to find it as a concentrate instead.
Pearlescent Pigment Powders.
The appearance of pearlescent Pigment Green 7powders will vary depending on their chemical composition. Specifically, they can range from opaque and white to translucent or clear. In terms of color, they’re most commonly found in silver and gold, but due to the nature of light interference with metal nanoparticles, it is possible to get other colors as well. The relatively small size makes them ideal for things like paints and household goods where a shimmery effect is desired. Because metallic-hued pigments use real metal powders that can scratch or flake over time (especially if exposed to high temperatures), pearlescent powders tend to be more durable than other options—even after undergoing extreme conditions such as heat treatment at 400 degrees Celsius in a rotary oven.
