摘要
以起始应力与平衡应力的差值的１／ｅ倍所对应的时间为硫化天然橡胶的平均松弛，适当选取各运动单元的松弛时间，建立了五参数数学模型谱的强度（Ａ１）通过多元线性回归，由最小二乘法确定。结果表明，回归值与实验值吻合良好。反映出不同的松弛单元对总松弛时间的贡献。
The average relaxation time of vulcanized rubber,τo is defined by the initial stress. Themodel with five parameters,,is established after the relaxation time of movementunits chosen properly. The intensity of relaxation spectrum(A1)is determined by multiperamter linearresression. The intensity shows the contribution of the movement units to the total relaxation.
出处
《青岛化工学院学报（自然科学版）》
1996年第4期364-368,共5页
Journal of Qingdao Institute of Chemical Technology(Natural Science Edition)
关键词
硫化天然胶
应力松弛
天然橡胶
松弛运动方程
vulcanized natural rubber
relaxation of stress
relaxation spectrum3 valuecalculation
curve fitting
