Study on preparation and performance of POM/PP/PE high rigidity and heat resistant composite materials
Polyformaldehyde(POM)/polypropylene(PP)/polyethylene(PE)ternary composite is prepared in order to obtain high-rigid-heat-resistant polyethylene matrix composite for the improvement and optimization of engineering structure.PE-g-MAH is used as compatibilizer to improve the compatibility of POM/PP/PE ternary system,and the effect of PE-g-MAH on the properties of POM/PP/PE composites is studied.When the addition of PE-g-MAH reached 7.5 parts,the maximum yield strength of the composite reaches 24.76MPa,which increased by 15.4%.The impact strength reaches the maximum of 25.78kJ·m-2,increased by 50.7%;The yield elongation reaches the minimum value of 13.96%,which is reduced by 29.3%.The results show that the addition of PE-g-MAH improves the comprehensive mechanical properties of POM/PP/PE composites,which not only improves the compatibility of the materials,but also substantially increases the energy storage modulus of the composite,and the rigidity and heat resistance of the composite are improved.
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