蛛丝纤维的生物合成 及应用研究 蜘蛛丝是一种优良的天然纤维,是强度最大、弹性最好的材料之一。研究表明,若把蜘蛛丝的抗冲击能吸收系数定为100％,则钢仅为2％,骨为5％,腱类为7％,植物纤维为10％,Kevlar(一种人工合成的防弹纤维)为32％,橡胶为80％,其应变断裂强度为2×10~3MPa,韧性好,弹性拉伸变形长度可达到原长度的33％,而钢拉伸率仅为1％。蜘蛛丝的脆化温度也很低 Biosynthesis and Application of Spider Silk Fiber Spider silk is an excellent natural fiber, which is one of the materials with the highest strength and the best elasticity. Studies have shown that if the impact energy absorption coefficient of spider silk is set at 100%, the steel is only 2%, the bone is 5%, the tendon is 7% and the plant fiber is 10%. Kevlar (a synthetic bullet- Fiber) is 32%, rubber is 80%, the strain rupture strength is 2 × 10 ~ 3MPa, the toughness is good, the elastic tensile deformation length can reach 33% of the original length, and the steel elongation is only 1%. Spider silk embrittlement temperature is also low