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Why Do PPR Pipes Need to Add Color Masterbatch?
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Why Do PPR Pipes Need to Add Color Masterbatch?

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Why Do PPR Pipes Need to Add Color Masterbatch?

2025-02-12

PPR water pipes on the market come in many colors. In addition to the most common white and green, there are also gray, blue, orange, etc. Buyers and sellers can customize the color of the pipes according to their needs. The main reason why there are so many colors is that different colors of "masterbatch" are added during the production of pipes. So what is color masterbatch and what does it do?

1. What is the color masterbatch?
Color masterbatch is a high-concentration pigment or colorant, usually in the form of particles or powder, and mainly includes three parts: carrier, colorant, and auxiliary.
The carrier is an important component of the color masterbatch. Its main function is to carry the colorant and disperse and fuse it into the plastic that needs to change the color; the colorant is the most critical component of the color masterbatch, which makes the color masterbatch show different The color; the auxiliary content is small, generally to help the colorant disperse or obtain some special properties, such as antioxidant, light stability, etc.

2. Why add color masterbatch?
Pure PPR raw materials are actually colorless and transparent without any color. After being made into water pipes, since they are not covered by light, it will be easier for algae and bacteria to breed in the water pipes, thereby polluting the water quality. It will also accelerate the aging of the water pipe and affect the service life of the PPR water pipe.
Therefore, according to the requirements of national standards, color masterbatch must be added in the production of PPR water pipes so that the water pipes can obtain good light-shielding properties.
Tips: Many people may think that white water pipes do not have color masterbatch added. In fact, white water pipes add white color masterbatch.

3. What are the advantages of color masterbatch?
(1) To make the pigment have better dispersion in the product, the pigment must be refined during the production process of the color masterbatch to improve the dispersion and tinting power of the pigment. The carrier of the special color masterbatch is the same as the plastic type of the product, and has good matching. After heating and melting, the pigment particles can be well dispersed in the plastic product.
(2) It is helpful to maintain the chemical stability of the pigment. If the pigment is used directly, the pigment will absorb water, oxidize and other phenomena due to direct contact with air during storage and use. While making into the color masterbatch, the resin carrier isolates the pigment from air and moisture, the quality of the pigment can be maintained for a long time.
(3) Ensure the color stability of the product. The color masterbatch particles are similar to the resin particles, which makes the measurement more convenient and accurate. They will not stick to the container when mixing, and the mixing with the resin is also relatively uniform, so the stability of the added amount can be ensured. Ensure the stability of product color.
(4) Protect the health of operators. Pigments are generally in powder form and are easy to fly when added and mixed. If inhaled by the human body, it will affect the health of operators.
(5) Keep the environment clean.
(6) Easy to use.

4. Is the color masterbatch healthy and environmentally friendly?
Color masterbatches for safe and environmentally friendly PPR pipes are usually made of food-grade or medical-grade pigments and carrier materials. These pigments should meet health and safety standards and should not contain toxic substances, so choosing reliable manufacturers and suppliers can ensure that the color masterbatch used is safe and up to standard.
In addition, when manufacturing PPR pipes, color masterbatch should be added to polypropylene under appropriate conditions to ensure uniform color distribution and no release of harmful substances. Quality control of the production process is also crucial to ensure product safety.

It can be seen that color masterbatch is of great significance to PPR pipes. It can not only be used for color distinction, but also enhance the light-shielding performance of the pipe and avoid bacterial growth. It is one of the indispensable raw materials for pipe production.