Ultra-high molecular weight polyethylene modification ternary system being easy to produce and process

Abstract

The invention discloses an ultra-high molecular weight polyethylene modification ternary system being easy to produce and process. The modification ternary system comprises the following raw materials in percentage by weight: more than 50% and less than 100% of nascent UHMWPE (ultra-high molecular weight polyethylene), more than 0 and less than 50% of self-plasticizer controlled degradation ultra-high molecular weight polyethylene and more than 0 and less than 50% of external plasticizer; the self-plasticizer controlled degradation ultra-high molecular weight polyethylene and the external plasticizer are adopted for simultaneously modifying the nascent UHMWPE. In the modification ternary system, the controlled degradation ultra-high molecular weight polyethylene can better keep the excellent performances of the nascent UHMWPE, and the controlled degradation ultra-high molecular weight polyethylene can be simultaneously interlaced between molecules of the nascent UHMWPE to play a disentanglement role; by adding the external plasticizer, the bonding effect between macromolecules of the nascent UHMWPE can be improved or the lubricating effect between the UHMWPE and a processing device can be increased.

Description

technical field [0001] The invention relates to a self-plasticizing modification system of polymer materials, in particular to an ultra-high molecular weight polyethylene modified ternary system which is easy to produce and process. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) has a variety of excellent properties such as strong wear resistance, low temperature impact resistance and strong environmental stress cracking resistance, making UHMWPE applicable to aerospace, medical, transportation, bulletproof , entertainment and many other fields. However, the extremely high melt viscosity and extremely low critical shear rate of UHMWPE seriously limit the production and processing scale of UHMWPE. Therefore, some scholars are constantly trying to improve processing equipment or research modification methods to improve the flow properties of UHMWPE. However, the effects are not ideal. The improved processing equipment method can realize the p...

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Problems solved by technology

However, the effects are not ideal. The improved processing equipment method can realize the production and processing of UHMWPE to a certain extent, but this method still has the disadvantages of single processing and high cost, and there are still great limitations in forming different UHMWPE products; The above disadvantages can be avoided, but most of the modification methods that can improve the flow properties of UHMWPE are often at the expense of reducing the excellent performance of nascent UHMWPE, and do not reasonably solve the problem of difficult processing of UHMWPE