UHMWPE modified ternary system that is easy to produce and process

Abstract

The invention discloses an ultra-high molecular weight polyethylene modified ternary system that is easy to produce and process. The modified ternary system is composed of raw materials in the following weight percentages: 50%< nascent UHMWPE<100%, 0< self-plasticizer Controllable degradation of ultra-high molecular weight polyethylene <50%, 0 < external plasticizer <50%; use self-plasticizer to controlly degrade ultra-high molecular weight polyethylene and external plasticizer to simultaneously modify nascent UHMWPE. In this modified ternary system, the controllable degradable ultra-high molecular weight polyethylene can better maintain the excellent performance of the nascent UHMWPE, and at the same time, the controllable degradable ultra-high molecular weight polyethylene molecules can be interspersed between the nascent UHMWPE molecules to untangle Function; Adding external plasticizer can improve the bonding effect between nascent UHMWPE macromolecules or increase the lubrication between UHMWPE and processing equipment.

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