Tough steel velvet wear-resistant resin FSP8531.

With the development of coating technology, the process is new, and the material requirements of the end application of the paint film are getting higher and higher. Many applications have relatively high requirements for hardness, wear resistance, stain resistance and bend resistance, which place higher demands on resin raw materials, often requiring a variety of performance considerations or balances. For hardness, steel velvet wear resistance, usually choose nine or ten high-level energy resin, but this kind of resin is generally brittle, and choose six-degree resin can not meet the requirements of steel velvet wear resistance . For 3C electronic products coating requirements, Runo Chemical has specially developed ten functional polyurethane acrylic - FSP8531, recommended for 3C electronic products UV paint, steel velvet wear-resistant system coating, functional film plus hard liquid.
We did a detailed test of the resin, test formula with resin with a small amount of monomer, appropriate amount of trigger agent, mainly to investigate the resin adhesion, curing speed, water resistance, hardness, steel velvet wear resistance, resistance and surface performance. Experiments show that FSP8531 has the following characteristics.
highly reactive
. FSP8531 reaction activity is very high, measured, in 100mJ/cm2 energy can be table dry, double-bond conversion rate is high, cross-link network dense. A small amount of use in the formula, can improve the overall curing speed, suitable for low-energy curing applications, formula adjustment window is large.
toughness is
. FSP8531 as a ten-level resin, has more reaction active group, with high hardness characteristics, pencil hardness on the PC substrate up to H @1kgf. High-ranking officials in the market resin generally curing contraction, brittle, easy to warp and other issues, after curing easy to crack, can not meet the bending or thick coating requirements. FSP8531 compared with the same type of high-level energy resin, small shrinkage, with a certain degree of toughness, good cracking resistance. In the formula with two or three-erythotic resin, can further reduce volume shrinkage, to obtain excellent toughness.
steel velvet wear resistance
now steel velvet wear testing in many high-end applications are hard indicators, the general six-officer resin can not meet this performance requirements. We tested the curing film of FSP8531 with 0000 steel velvet, weighing 1kg of weight, rubbing it back and forth 250 times, and the paint film surface was unmarked. And many nine, ten official resins in the friction 150 times, there will be fine marks, from the test results can be seen that the FSP8531 has excellent resistance to steel velvet friction performance. On the other hand, many high-ranking official resins with low-level resin or monomer regulation toughness, the impact on wear resistance is very large, and FSP8531 small amount with low-level energy ingredients, steel velvet wear resistance decline is not significant, in the formulation design has a larger space.
water-resistant boiling
many high-ranking officials can resin due to curing volume shrinkage, water after boiling adhesion decline is more obvious. FSP8531 has a hydrophobic structure, and relatively low shrinkage, high cross-link density also makes water vapor difficult to penetrate, the measured boiling water boiling for an hour, no change in the surface, no foaming, no whitening, and adhesion has not decreased. When used in mature formulations, it can play a role in improving the performance of water-resistant cooking, to meet the high-end applications of 3C water-resistant testing requirements.
adhesion
. FSP8531 to PC, ABS, PMMA and other plastic substrates have excellent adhesion, TPA or PU primer also has good adhesion, while good wetting makes the paint film will not appear hemp dot, shrink holes and other defects, has a good leveling and plumpness, suitable for large-area spraying or coating process.
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