通过并用NR并加入适量陶土，对全钢载重子午线轮胎气密层胶配方进行改进。
The BIIR-based formula of inner-liner in TBR tire was modified by blending NR and adding proper level of clay.
结果表明，改进后的气密层胶透气系数有所增大，但能够满足有内胎轮胎气密层的要求；
The results showed that the permeability of modified inner-liner to air increased somewhat, but still could meet the requirement of inner-liner in tube-tire;
结果表明，改进后的气密层胶透气系数有所增大，但能够满足有内胎轮胎气密层的要求；
The results showed that the permeability of modified inner-liner to air increased somewhat, but still could meet the requirement of inner-liner in tube-tire;
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