Analysis of the advantages and disadvantages of optical brightener OB-1

With the recent decline in the price of optical brightener OB-1, the cost-effectiveness of OB-1 has become more prominent, and some factories have begun to switch to OB-1 from other models. However, there are still some industries that choose to use optical brighteners OB, KCB, FP-127 and other models instead of optical brightener OB-1.

If you are also using optical brighteners KCB, OB and other models, then you are also very confused, can I use optical brightener OB-1? If it can’t be used, why can’t it be used? Below I will briefly analyze the advantages and disadvantages of optical brightener OB-1.

From the point of view of temperature resistance：

The temperature resistance of optical brightener OB-1 is 359 ℃, which is the highest temperature resistance of all optical brighteners at present. For factories producing high temperature resistant plastics, only OB-1 can be used, because in the current situation Next, the optical brightener OB-1 is the product with the best heat resistance among all the whitening agent products.

 At present, only the optical brightener OB-1 can withstand 359 ℃, which is the biggest advantage of the optical brightener OB-1, because OB-1 has the highest temperature resistance among the current plastic whitening agents. It can reach more than 350 degrees, and it is suitable for almost all plastics, and his optical brightener will not work.

From the fluorescent color light emitted：

Different products of optical brighteners or the same product have many color light products, some optical brighteners emit blue light, some are bright blue light, blue-violet light, blue-green light, etc., because most of the raw materials in nature are yellowish, Moreover, yellow light and blue light are visible to the naked eye as white light, so the brighter the heavier the blue light, the better the fluorescent effect, the better the whitening effect, and the less the amount of addition.

Optical brightener OB-1 is divided into green phase products called green phase, and a yellow phase product called yellow phase, the fluorescence emitted by the green phase is more blue, and the yellow phase is more blue-violet.

At present, the green phase of the optical brightener OB-1 is used in the majority, but the green blue light is not as high as the blue light intensity emitted by OB, KCBN and other products, but it also has quite good fluorescence intensity, and the whitening effect is good. In terms of color and light, although the optical brightener OB-1 did not win, it did not lose too much.

 From the perspective of application scope：

Although the optical brightener OB-1 is suitable for polyester fiber, nylon fiber, polypropylene fiber and other chemical fiber plastics, it has a very good whitening effect on polypropylene plastic, rigid PVC, ABS, EVA, polystyrene, polycarbonate and other materials. Good, but the applicability of OB-1 is only limited to hard plastics, and most soft plastics use OB-1 with a great risk of precipitation.

From the perspective of product stability：

The biggest disadvantage of the optical brightener OB-1 is its poor weather resistance. Under the same temperature and humidity, the optical brightener OB-1 has the largest migration and precipitation, and the product is more likely to return to yellow. If there is a high requirement for the final stability of the product, such as shoe material products, only KCB can be used, because KCB has good resistance to migration and precipitation, so the optical brightener OB-1 cannot be used.

 In summary, although the optical brightener OB-1 is a good product in terms of temperature resistance, color light, dosage and whitening effect, but in terms of stability and weather resistance, the downstream use of the product The effect is poor, and it is easy to separate out, resulting in many after-sales and unsalable products.