Beauty seams are prone to yellowing, which is a common problem in the early stage, and owners who have done beauty seams will have such worries.
This also led to the birth of polyurea seam: a polyurea seam that can still be as beautiful as new under the scorching sun is exactly what everyone is looking for.
The biggest advantage of polyurea seam over epoxy seam is yellowing resistance.
What is yellowing resistance?
The yellowing resistance of the seam material refers to the degree of reaction and the ability to resist yellowing of the seam material under the long-term exposure of natural sunlight and ultraviolet rays, or under the action of heat, oxygen, stress, trace moisture, impurities, etc.
The epoxy seams on the market generally have poor yellowing resistance, which cannot meet everyone's needs for long-lasting yellowing resistance of beautiful seams.
Therefore, it is recommended that you choose pure polyurea sewing, choose grade 0 yellow-resistant sewing, one-time home improvement, permanent peace of mind.
However, yellowing resistance is also graded, which level is the best?
What are the levels of yellowing resistance?
Yellowing resistance grade:
The yellowing resistance test method of national inspection is to use fluorescent ultraviolet equipment to carry out climate aging test on the beauty seam coating, measure the color value with a tester after 168 hours of continuous illumination, and obtain the yellowing resistance coefficient according to the measurement results, and finally divide it into 0-5 according to the coefficient rating.
Zhuogo polyurea seam adopts pure polyurea formula, and the yellowing resistance has been tested to reach grade 0 (the highest level of yellowing resistance).
Here's a general look at what is the relationship between the yellowing resistance coefficient and the number of yellowing years:
According to standard GE/T 23983-2009TCECS 10158-2021
Class 0: 0≤ yellowing resistance coefficient ≤ 1.5, no change, that is, no perceptible change;
Grade 2 (3< yellowing tolerance coefficient ≤4.5): slight change, that is, a change that is clearly perceptible
Level 3 (4.5< yellowing tolerance coefficient ≤6): medium change, that is, there is a clearly perceived change
Grade 4 (6< yellowing resistance coefficient ≤7.5): large changes, that is, there are large changes
Grade 5 (7.5< yellowing resistance coefficient ≤9): severe changes, that is, strong changes
The smaller the coefficient, the stronger the yellowing resistance!
It can be seen that the yellowing coefficient of pure polyurea seam is 0.15, which is both grade 0 yellowing resistance and yellowing resistance far exceeds 20 years!
This proves that the polyurea sewing material has strong oxidation resistance and UV resistance, even if it is exposed to strong sunlight for a long time indoors, it can be long-lasting and beautiful, and the color is stable and unchanged.
Some bad manufacturers will use shoddy and add harmful substances to the beauty sewing material in order to temporarily improve the problem of yellowing of the seam, so that even if the seam has yellowing resistance, it is short-lived, and it will also endanger health!
Is yellowing resistance and environmental performance balanced?
For Zhuoco's polyurea sewing, whether it is sunshine emery that can be toned on site, or the latest China Joy Porcelain Soft Light Porcelain and China Joy Sand Soft Sand series, pure raw materials are used, without adding harmful ingredients, to meet the testing standards of pure polyurea.
PS: High-definition detection data files, consult Zogo online customer service or Zogo service center.
Choose safe and reliable polyurea sewing to make the sewing as beautiful as new and protect the health of the whole family.