The effect of the sulfur variation on the thermal aging properties of NR tube was investigated by laboratory test.
进行了硫黄变量小配合试验，研究硫黄用量对NR内胎耐热老化性能的影响。
The results showed that the thermal aging properties of NR tube improved significantly by reducing the sulfur level.
试验表明，减少硫黄用量对改善NR内胎耐热老化性能的作用十分明显。
Thermal aging treatments were carried out in dry oven in order to find the way to improve the mechanical properties of PB by using all factors methods.
为了探索改善刨花板力学性质的途径，采用全因素试验方法，对刨花板进行热老化处理。
The results of thermal mechanical properties, anti-aging property (RTI value) and SGS certification on environment safety showed that the materials had wonderful application prospect.
该材料热力学性能、耐热老化性能（RTI）的研究及SGS环境安全认证与应用表明，其具有较好的应用发展前景。
This paper investigates physical and rheological properties before and after ultraviolet aging, compared the influence for asphalt performance of ultraviolet radiation aging with thermal aging.
本文研究了沥青紫外老化前后的物理性能与流变性能，并与热老化前后的物理性能与流变性能进行了对比。
The results showed that FHD-60 gave the compounds better thermal aging, wea ther aging and flexing properties, and was an ideal product for replacing antideg radant A.
结果表明，防老剂FHD 6 0在热氧老化、天候老化及抗屈挠性方面均有良好效能，是取代防老剂A的理想产品。
The results showed that FHD-60 gave the compounds better thermal aging, wea ther aging and flexing properties, and was an ideal product for replacing antideg radant A.
结果表明，防老剂FHD 6 0在热氧老化、天候老化及抗屈挠性方面均有良好效能，是取代防老剂A的理想产品。
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