The Development Of High Strength Super Tough Penton Alloy And Its Sub-micro-phase State

The relationship of composition, construction and property of polymer blend is very important to exploit novel kind of polymer alloy material. In this paper, Polychloroether (PCE) was modified by mixing it with various reinforced agents and toughened agents in a screw extruder or a double-roll plasticator. A wide range of PCE blend alloys included PCE/CR, PCE/PA6, PCE/POM, PCE/POE, PCE/POE-g-MAH, PCE/CPE, PCE/CPVC, PCE/POM/EVA and PCE/CPE/CPVC were prepared. The mechanical properties and micro-morphology of these alloys were characterized by using the technique of impact tests, tensile tests, thermal property tests and scanning electron microscopy (SEM). The results show that the strength and toughness of PCE are improved. So the method was considered as a good way to develop the high-strengthened and super-toughened PCE blend. The similar results weren't reported before.Blending chloroprene rubber (CR) with PCE can improve the toughness of PCE, but the tensile strength decrease with increasing the CR content. SEM clearly shows the poor adhesion between two phases. PCE/PA6 is incompatible polymer blend. The tensile strength and notched impact strength are slightly improved compared with PCE resin. The effect of toughing is different with blending different brand POE. Engage8180 POE is the best toughened agent in four brands (Engage8401, Engage8403, Engage8150, Engage8180). But the tensile strength of PCE/POE is decreased rapidly. MAH grafted Engage8180 POE was prepared as a compatibilizer. The results show that the mechanical property of PCE/POE-g-MAH is better than that of PCE/POM. SEM show that the structure of two phases is improved by the graft-polymer. EVA can be used as a compatibilizer of PCE and POM. EVA and POM show evidently synergistic reaction inPCE/POM/EVA alloy. Chlorinated polyethylene (CPE) is a very good super-toughened agent for PCE. The notched impact strength of blend PCE/CPE increased abruptly with the increasing content of chlorinated polyethylene (CPE). The specimens remain unbroken when the content of CPE is more than 20wt%. The notched impact strength of 70/30 PCE/CPE blend can reach at 962.40J/m. It shows that the blend is super-toughened material. With the increasing weight of CPE, however, the tensile strength decreased. PCE/CPE.alloy is compatible polymer blend. CPVC can increase the tensile strength of PCE, but the notched impact strength is decreased. The type of stress-strain curve changes with the increasing content of CPVC. It is indicated that the elastic deformation before fusion and viscous flow temperature also increase which is derived from temperaUire-deformation curve. 80/20/2 is the best ratio of components of PCE/CPE/CPVC alloy The notched impact strength of this alloy can reach at 793.75J/m, which is close to super-toughened material The tensile property is also good. Increasing CPVC content, the three components alloy shows tough-brittle transition.