阅读说明：本技术 一种新型玄武岩纤维复合筋及其制备方法和应用 (Novel basalt fiber composite rib and preparation method and application thereof ) 是由 刘中生 刘国玲 于 2020-04-08 设计创作，主要内容包括：本发明涉及复合材料的技术领域,更具体地说,涉及一种新型玄武岩纤维复合筋及其制备方法和应用,所述新型玄武岩纤维复合筋是通过树脂基体将钢丝绳以及包覆在钢丝绳周围的若干玄武岩纤维经拉挤模具加热固化成型,其中,玄武岩纤维和钢丝绳的复合体积比为5～3：1,树脂基体的体积占新型玄武岩纤维复合筋总体积的20%-25%,制备的新型玄武岩纤维复合筋应用于土建交通结构中。本发明提供的新型玄武岩纤维复合筋的纵向热膨胀系数和横向热膨胀系数差异较小,且新型玄武岩纤维复合筋任何方向的热膨胀系数都与混凝土的热膨胀系数接近,从而减少新型玄武岩纤维复合筋由于环境温度变化而产生裂纹的现象,进一步提高玄武岩纤维复合筋在建筑结构中的应用。(The invention relates to the technical field of composite materials, in particular to a novel basalt fiber composite bar, a preparation method and application thereof, wherein the novel basalt fiber composite bar is formed by heating, curing and molding a steel wire rope and a plurality of basalt fibers coated around the steel wire rope through a resin matrix by a pultrusion die, and the composite volume ratio of the basalt fibers to the steel wire rope is 5-3: 1, the volume of the resin matrix accounts for 20-25% of the total volume of the novel basalt fiber composite bar, and the prepared novel basalt fiber composite bar is applied to civil engineering traffic structures. The novel basalt fiber composite bar provided by the invention has small difference between the longitudinal thermal expansion coefficient and the transverse thermal expansion coefficient, and the thermal expansion coefficient of the novel basalt fiber composite bar in any direction is close to that of concrete, so that the phenomenon that the novel basalt fiber composite bar cracks due to the change of environmental temperature is reduced, and the application of the basalt fiber composite bar in a building structure is further improved.)

1. The utility model provides a novel basalt fiber composite rib which characterized in that: the novel basalt fiber composite rib is formed by heating, curing and molding a steel wire rope and a plurality of basalt fibers coated around the steel wire rope through a pultrusion die by a resin matrix, wherein the composite volume ratio of the basalt fibers to the steel wire rope is 5-3: 1, the volume of the resin matrix accounts for 20-25% of the total volume of the novel basalt fiber composite bar.

2. The novel basalt fiber composite bar according to claim 1, wherein: in the heating curing molding of the pultrusion mold, the pultrusion speed is 600 mm/min-620 mm/min, the traction force is 0.5 t-0.6 t, and the pressure is 0.8 MPa-1.0 MPa; the temperature is 110-120 ℃.

3. The novel basalt fiber composite bar according to claim 1, wherein: the steel wire rope is subjected to resin matrix pre-dipping for 30-40 s before use.

4. The novel basalt fiber composite bar according to claim 1, wherein: the steel wire rope is formed by weaving 2-3 strands of 5-10 carbon steel wires with the diameter of 0.1-0.3 mm, and the weaving mode of the steel wire rope is that the carbon steel wires are mutually crossed and wound into a twist-like shape.

5. The novel basalt fiber composite rib according to claim 4, wherein: the carbon steel wire has carbon content of 0.70-0.90%, tensile strength of 1450-1500 MPa and elastic modulus of 190-195 GPa.

6. The novel basalt fiber composite bar according to claim 1, wherein: the diameter of the basalt fiber is 7-13 mu m.

7. The novel basalt fiber composite bar according to claim 1, wherein: the resin matrix is at least one of epoxy resin and polyethylene resin.

8. The novel basalt fiber composite rib according to claim 7, wherein: the epoxy resin is bisphenol A epoxy resin, and the epoxy equivalent is 176-190 g/eq.

9. The method for preparing a novel basalt fiber composite bar as claimed in any one of claims 1 to 8, wherein the method comprises the following steps: the novel basalt fiber composite rib is formed by heating, curing and molding a steel wire rope and a plurality of basalt fibers coated around the steel wire rope through a resin matrix by a pultrusion die, wherein the pultrusion speed is 600 mm/min-620 mm/min, the traction force is 0.5 t-0.6 t, and the pressure is 0.8 Mpa-1.0 Mpa; the temperature is 110-120 ℃.

10. The use of the novel basalt fiber composite rib as set forth in any one of claims 1 to 8, wherein: the novel basalt fiber composite bar is applied to civil engineering traffic structures.