The radiationmodification filament was successfully used in reinforce heatshrinkables and can meet completely the requirements of the reinforced heat shrinkable materials.
力学性能无劣化，完全能满足增强型热缩材料的使用要求。
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Chemistry modification together with blend modification was effective for the modification of the block copolymer. Radiationmodification by electron beam and ultraviolet were an important trend.
The mechanism of organic reactions promoted by microwave is briefly introduced, and developments of microwave radiation technique in chitosan modification are summarized.