Chloe Zhang
There are several ways to colour transparent plastic, such as that found on mobile phones. One method involves using a plastic casting resin mix, which typically comes in two parts: a resin and a hardener. These can be mixed and coloured with suitable dyes, creating a hard, rigid, and transparent plastic. Alternatively, a soft, translucent plastic can be made using starch, such as corn or potato starch, coloured with food dyes. Another approach is to use Rit dye, a solvent, and boiling water to help the dye penetrate quickly. Additionally, Tamiya offers a transparent paint that can be used, although it is not truly clear. For a darker tint, Night Shades tint spray can be used, but it requires a dust-free environment as the plastic stays tacky for a while.
Characteristics and Values Table for Coloring Transparent Plastic of Mobile:
| Characteristics | Values |
|---|---|
| Materials | Plastic casting resin mix, starch (corn or potato), food coloring, Rit dye, boiling water, solvent, Tamiya "transparent" paint, glycerin, white vinegar, Future floor polish |
| Tools | Non-stick pan, stove, pot, rubber gloves, mold (silicone or latex), aluminum foil |
| Process | Mix resin and hardener, add food coloring or dye, stir, heat mixture on stove, pour into mold or aluminum foil, model plastic as desired |
| Tips | Ensure work area is well-ventilated, wear gloves, avoid excessive heat to prevent melting plastic, test on a small area first, use a dust-free environment |
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What You'll Learn
Using food colouring
Dyeing clear plastic with food colouring is a quick and easy DIY project. It is important to note that any colouring will diminish transparency to some extent. This method works best for small objects made of clear acrylic plastic, especially those that are shaped like cubes or are round.
To begin, protect your work area with newspapers and a garbage bag. Wear clothes that can get stained in case of spills. Clean your object with a microfiber cloth and warm soapy water, removing any stickers. Ensure the object is completely dry.
The next step is to create your dye mixture. This is more of an art than a science, so feel free to experiment. Start by squeezing school glue into the bottom of a plastic cup—about half an inch should be enough. Add a few drops of food colouring and mix with a toothpick or small paintbrush. Add more food colouring one drop at a time until you achieve your desired colour. If the mixture becomes too thick, add a few drops of water to thin it out.
Now, pour the mixture into your object. Use a funnel if the object has a small opening. Swirl the mixture around, rotating the object at a slight downward angle to ensure full coverage. You can also dip the object in cool water every 7-10 minutes to achieve an even colour. Repeat this process for up to an hour, depending on the size of your object.
Finally, place the object on a protected, waterproof surface to dry overnight. Make sure the area is secure and nothing will bump into the object. If you plan to use your dyed object with water, such as a vase, seal it with a sealant to prevent the glue from dissolving.
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Rit dye, boiling water, and a solvent
Rit dye can be used to colour clear plastic, but it may remove the clear effect of the plastic. It is recommended that you test a small piece of plastic first.
To colour your plastic with Rit dye, you will need to submerge it in a dye bath. First, fill a stainless steel pot with enough water for your plastic to move freely. The general guideline is to use 3 gallons (11.5 litres) of water for every pound (half a kilogram) of fabric. If you are using powder dye, dissolve it thoroughly in 2 cups (470ml) of very hot water. Bring the water to a rolling boil, then reduce to a simmer. Add your liquid or powder dye to the water and mix well.
Next, submerge your plastic in the dye bath. Use tongs to slowly place the object in the dye and move it around with tongs to cover it completely. Make sure the plastic is not touching the bottom of the container to prevent smudges. Keep the plastic in the dye bath for at least 10 minutes and up to one hour, stirring constantly and removing the plastic regularly to check on its coloration. The longer you leave the plastic in the dye, the darker the colour will be.
When you are happy with the colour, remove the plastic from the dye bath and rinse it under cold water. Allow the plastic to air dry.
You can also add a solvent to the dye bath to help the dye penetrate the plastic more quickly. A solvent is a substance that can dissolve another substance. In this case, you can use isopropyl alcohol or acetone as a solvent, but be aware that both of these substances are flammable, so good ventilation is essential. Add the solvent to the dye bath in a quantity that is 25 to 30% of the volume of the dye and water mixture. Heat the dye bath to 185 degrees Fahrenheit (85 degrees Celsius) and immerse your plastic, keeping it agitated. When you have achieved the desired colour intensity, remove the plastic from the bath and rinse it in cool water.
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$12.99
Plastic casting resin mix
When it comes to colouring transparent plastic for mobile phones, there are a few methods you can try. One option is to use the RAL colour system, which has been designed to make it easier to match colours across different suppliers. Pantone is another colour system, but it has been noted that Pantone colours are expensive and suppliers may try to mimic them with their own resin.
To colour transparent plastic, you can work with a compounder to get the colour right, or you can order samples from plastic manufacturers who have their own colour systems, such as Acrylite and Sabic. There are also masterbatch companies that specialise in colourants for plastics, like Omnicolor and Toyo-Color.
Now, let's talk about the plastic casting resin mix process. Here's a step-by-step guide:
Step 1: Prepare Your Workspace and Materials
Before you begin, make sure you have all the necessary materials, including plastic cups or containers, mixing sticks (clean, wooden lollipop sticks are ideal), nitrile gloves, and your chosen resin and hardener. Always work in a well-ventilated area when mixing resin and hardener.
Step 2: Calculate the Correct Ratio
The key to successfully mixing resin is to calculate the correct ratio of resin to hardener. Follow the instructions provided with your specific resin product to determine the exact ratio required.
Step 3: Mix Thoroughly
Start by combining the resin and hardener in your plastic cup. Stir the mixture thoroughly, ensuring you scrape the sides of the cup to incorporate all the hardener. Be careful not to rush this step, as rushing can introduce bubbles into your mixture. A thorough mix can take up to two minutes, depending on the cure time of your hardener.
Step 4: Pour Slowly
Once you have a well-mixed resin, slowly and steadily pour it into your chosen mould. Pouring slowly will help prevent spillage and reduce the formation of bubbles.
Step 5: Remove Bubbles
If bubbles do appear, use a toothpick or pin to pop them as soon as they form. This will give your final product a more professional finish. Alternatively, you can gently heat the resin with a heat gun to eliminate bubbles.
Step 6: Allow It to Cure
Finally, allow your resin to cure completely according to the manufacturer's instructions. The cure time will vary depending on the type of resin and hardener you are using.
Remember to always follow safety precautions when working with resins, and make sure to dispose of any unused resin mixture properly. With practice, you'll be able to create beautifully coloured transparent plastic pieces for your mobile phone or other projects.
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Tamiya transparent paint
Tamiya transparent spray paints are specially designed for decorating transparent polycarbonate bodies used in R/C car modelling. Each can contains 100ml of paint, which is typically enough to finish one complete model.
When painting with Tamiya transparent spray paint, the process differs from traditional plastic models. Instead of spraying the outside of the model, you spray the paint from the inside of the body shell. It is recommended to maintain a distance of about 30cm between the spray can and the surface being painted. After curing, you can apply another coat if needed.
These paints are resistant to oil and fuels, making them suitable for use on gas-powered R/C bodies. They are designed to achieve a translucent frosted glass look on polycarbonate bodies. Tamiya offers a range of translucent colours, including red, blue, light blue, pink, yellow, orange, green, and purple. These colours can be combined with bright silver to create a deep mica colour effect. Additionally, using translucent silver with normal colours can result in a shiny metallic finish.
While Tamiya transparent spray paints are commonly used for R/C car modelling, they can also be an option for colouring transparent plastic on mobile phones or other similar items. However, it is important to note that the paint application process may vary depending on the specific object being painted.
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Future floor polish and food colouring
If you want to colour transparent plastic for a mobile phone, one method is to use Future floor polish and food colouring. This process is simple and can be done at home.
Firstly, you need to choose the colour you want to dye the plastic. You can mix food colouring to create the desired shade. Then, mix the food colouring with Future floor polish. This mixture will be used to dye the plastic.
Before applying the dye, ensure the plastic is clean and free of any residue. You can use a mild soap and water solution to clean the plastic and then dry it thoroughly.
Now, you can apply the mixture to the plastic. Use a soft cloth or brush to evenly spread the dye onto the plastic surface. Make sure to cover all the desired areas.
The dyed plastic will need time to dry. Leave it in a well-ventilated area and allow it to air-dry completely. This may take several hours or even a day, depending on the thickness of the coating.
Once it's dry, you can assemble your phone case. Enjoy your customised phone with its new coloured plastic!
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Frequently asked questions
You can use Rit dye, boiling water, and a solvent. This will help the dye penetrate quickly, potentially before a haze can build. You can also try adding food colouring to Mod Podge, which dries transparent even when a thick coat is applied.
You can use a plastic casting resin mix, which usually comes in two parts: the resin and a hardener. When mixed together, they form a hard, rigid plastic. Casting resins are usually clear and colourless, but you can add suitable dyes to them. You can also make a soft, translucent plastic using starch and food colouring.
You can use Tamiya "transparent" paint, but note that it is not truly transparent. You can also try "Night Shades" tint spray, which is typically used for tinting car tail lights black.
