What kind of EPDM colorful pellets are good pellets?
Many non-professional users are basically incapable of distinguishing between good and bad. This article briefly introduces the relevant knowledge of EPDM colored rubber particles to increase everyone’s understanding of EPDM particles.
1. Glue content
The main component of EPDM colored particles is EPDM, that is, ethylene-propylene-diene rubber (a terpolymer of ethylene, propylene and non-conjugated diene). EPDM rubber has good chemical stability, strong wear resistance, elasticity, oil resistance, anti-aging, and UV resistance. Therefore, the content of EPDM rubber in the EPDM color particles directly determines the chemical and physical properties of the color particles. The common glue content of EPDM color particles in the market is divided into: 10% glue content, 13% glue content, 17% glue content.
The high content of glue enhances the chemical and physical properties of the material. The most important thing is that the elastic properties of the material are improved, and the plasticity resistance is improved. At the same time, the level of glue content is directly related to the purchase unit price. When selecting materials, it is necessary to ensure that they can be used, durable but not wasteful. 10% are used in kindergarten colored floors, plastic runway surfaces, etc., 13% are used in mixed runway surfaces, and 17% are used in basketball courts and other venues with a large amount of exercise and strong impact. The principle of use is sufficient, but it cannot reduce the requirement to use.
2. Color aging performance.
The natural color of EPDM material is fixed, so how can the resulting particles have so many colors?
This involves the problem of dyes, not the true color of EPDM. In the process of making EPDM color particles, dyes will be added to color according to requirements. The aging resistance of dyes is the aging resistance of EPDM color particles, so it is very important to choose a good dye. It should be noted here that the dye is stirred in the raw material and then cured, not the dye added after the EPDM particles are prepared. The difference between the two is that the former is the color of the whole body, and the color is still the same after wear, while the latter is the inconsistent color inside and outside, and the marks after wear are obvious.
3. Particle size number.
The production process of EPDM particles is to first make them into a plate shape, and then pulverize them according to the particle size requirements. The production process and cost are the same between different particle size numbers. So what kind of granularity number is selected, the procurement cost is the same. However, the effects of different particle size numbers are different. For example, kindergarten colored ground, 1-2 and 1-3 have different effects, users have their own preferences, and there is no uniform standard for good or bad; the effect of using 1-2 on the runway spray surface is better, and some people use 0.5-1.5 , Different construction workers have different effects, which should be selected according to the preferences of each company.
4. The choice of glue.
The binder of EPDM particles is glue, and the performance of the glue also directly affects the performance of the entire site. Just like a cement site, no matter how good the sand and gravel are, but the cement is not good, the whole site is still a rotten site. The strength of the glue directly determines the service life of the site. If the strength of the glue is insufficient, the site will be de-particled and layered. The glue is too brittle after curing, and the surface of the venue is easily worn and broken. Glue also affects the appearance of the venue. All the particles are covered with glue, and the inferior glue will turn black after curing, and the color of the venue will be dull. The high-quality glue is transparent and incremental, and the entire venue looks brightly colored, as if it has been waxed.
