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High-strength rubber concrete containing composite fiber interface filler and preparation method
The invention relates to the technical field of concrete, and provides high-strength rubber concrete containing a composite fiber interface filler and a preparation method of the high-strength rubber concrete. The preparation method comprises the following steps: firstly, activating the surface of the helical carbon fiber, introducing an acyl chloride group to the surface of the helical carbon fiber, then reacting the acyl chloride group with propargyl alcohol to obtain a terminal alkynyl group, and then reacting the terminal alkynyl group with bis (triethylphosphine) palladium dichloride to load a palladium catalyst on the surface of the helical carbon fiber. And finally, initiating a phenyl isocyanide monomer to polymerize through a palladium catalyst to form a spiral molecular chain, thereby preparing the spiral carbon fiber/spiral polyphenyl isocyanide filler, namely the composite fiber interface filler. By adding the interface filler, the interface bonding of rubber particles and concrete inorganic components can be obviously improved, and the interruption of a stress transfer path during compression is prevented, so that the compressive strength of the rubber concrete is improved.
本发明涉及混凝土的技术领域，提供了一种含复合纤维界面填料的高强度橡胶混凝土及制备方法。本发明先对螺旋碳纤维进行表面活化，并在其表面引入酰氯基团，然后通过酰氯基团与丙炔醇的反应获得端炔基，再通过端炔基与双（三乙基膦）二氯化钯的反应实现在螺旋碳纤维表面负载钯催化剂，最后通过钯催化剂引发苯异腈单体聚合形成螺旋分子链，从而制得螺旋碳纤维/螺旋聚苯异腈填料，即复合纤维界面填料。通过添加该界面填料，可明显改善橡胶颗粒与混凝土无机成分的界面结合，防止受压时应力传递路径中断，从而提高橡胶混凝土的抗压强度。
High-strength rubber concrete containing composite fiber interface filler and preparation method
The invention relates to the technical field of concrete, and provides high-strength rubber concrete containing a composite fiber interface filler and a preparation method of the high-strength rubber concrete. The preparation method comprises the following steps: firstly, activating the surface of the helical carbon fiber, introducing an acyl chloride group to the surface of the helical carbon fiber, then reacting the acyl chloride group with propargyl alcohol to obtain a terminal alkynyl group, and then reacting the terminal alkynyl group with bis (triethylphosphine) palladium dichloride to load a palladium catalyst on the surface of the helical carbon fiber. And finally, initiating a phenyl isocyanide monomer to polymerize through a palladium catalyst to form a spiral molecular chain, thereby preparing the spiral carbon fiber/spiral polyphenyl isocyanide filler, namely the composite fiber interface filler. By adding the interface filler, the interface bonding of rubber particles and concrete inorganic components can be obviously improved, and the interruption of a stress transfer path during compression is prevented, so that the compressive strength of the rubber concrete is improved.
本发明涉及混凝土的技术领域，提供了一种含复合纤维界面填料的高强度橡胶混凝土及制备方法。本发明先对螺旋碳纤维进行表面活化，并在其表面引入酰氯基团，然后通过酰氯基团与丙炔醇的反应获得端炔基，再通过端炔基与双（三乙基膦）二氯化钯的反应实现在螺旋碳纤维表面负载钯催化剂，最后通过钯催化剂引发苯异腈单体聚合形成螺旋分子链，从而制得螺旋碳纤维/螺旋聚苯异腈填料，即复合纤维界面填料。通过添加该界面填料，可明显改善橡胶颗粒与混凝土无机成分的界面结合，防止受压时应力传递路径中断，从而提高橡胶混凝土的抗压强度。
High-strength rubber concrete containing composite fiber interface filler and preparation method
一种含复合纤维界面填料的高强度橡胶混凝土及制备方法
HUANG QINGHUA (author)
2023-02-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B28C
Tonaufbereitung
,
PREPARING CLAY
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