How to improve the toughness of TPE raw materials
Source：德創(chuàng)化工Time：2021-01-05Hits：2435
On January 5, 2021, Dongguan Dechuang Chemical Co., Ltd. wished everyone a happy New Year and a great fortune in the Year of the Ox!
As we all know, TPE material is a kind of elastomer which has the elasticity of rubber at normal temperature and can be plasticized at high temperature. Therefore, it is usually famous for its excellent elasticity and toughness. However, in the process of producing and processing TPE materials, many friends sometimes encounter the situation that TPE materials have poor toughness and are easy to break and crack. So what is the reason for the poor toughness of TPE products?
The reasons for poor toughness of TPE products are as follows:
Reason 1: TPE materials are filled with more fillers, which leads to the decrease of tensile properties and flexibility.
Solution: Reduce the proportion of filling materials.
Reason 2: When 2：TPE material is molded, the amount of nozzle and recycled scrap is too much.
Solution: The toughness of nozzle corner material is poor, and the toughness of TPE material is easy to be reduced due to excessive addition. It is suggested that the proportion of nozzle scraps should be below 25%.
Reason 3: The molecular weight of 3：TPE materials is low, and the toughness can not meet the high requirements.
Solution: switch to high molecular weight substrate.
Reason 4: The temperature of TPE material is too high during molding, which leads to degradation, physical property decline, brittleness and poor toughness.
Solution: Understand the suitable molding temperature of TPE materials. In case of doubt, it is recommended to consult the material supplier.
Reason 5: The molding temperature of TPE material is not enough, the material is not plasticized sufficiently, and the toughness is poor.
Solution: Understand the suitable molding temperature of TPE materials. In case of doubt, it is recommended to consult the material supplier. Judging whether the molding temperature is low, if the surface gloss of the product is low or even pitted, the molding temperature of the material needs to be increased; Second, look at the nozzle, if the nozzle surface lacks luster, the plasticizing temperature is low.
Dechuang Chemical comprehensively introduces the above contents, which are the common reasons for the poor toughness of TPE products and the corresponding solutions. Of course, the reasons for the poor toughness of TPE products will be different due to the different situations. Therefore, we still need to analyze the causes and solve the problems according to the actual situation.
