Artificial granite composite material and preparation method thereof

Abstract

The invention discloses an artificial granite composite material and a preparation method thereof. The method comprises the steps of cleaning, crushing sieving and drying aggregates; weighing coarse aggregates of which the particle sizes are greater than 2.36mm according to grading requirements, and adding the coarse aggregates to a binder which is heated in advance for pretreatment; weighing resin, a curing agent and a diluent again according to the weight ratio, mixing evenly, adding an aggregate mixture, mixing evenly by using a forced mixer, and casting the mixture into a mold coated with a release agent; and fixing the mold on a vibration table for vibration molding, and carrying out room-temperature curing and conserving to form a finished product. Compared with a conventionally prepared artificial granite composite material, the obtained artificial granite composite material has the advantages that surface cracks and defects of the coarse aggregates are filled and repaired through immersion in the heated binder, the aggregates and the binder system are bonded more firmly, and the compressive strength is improved by 10-15%.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to an artificial granite composite material and a preparation method thereof. Background technique [0002] With the development and demand of national high-tech fields such as aerospace, astronomical observation, laser nuclear fusion, military industry, modern medical treatment, and automobile manufacturing in China, higher and higher requirements are imposed on machine tool equipment. To meet the development needs of these high-tech industries, high precision, intelligence, high efficiency, and green recycling have become the development trend of advanced manufacturing equipment technology. In order to reduce the processing time and improve the processing efficiency, it is necessary to increase the cutting amount and increase the cutting speed, but it will also cause the vibration of the machine tool. Excessive vibration is extremely unfavorable to the proc...

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Problems solved by technology

Cast iron materials are mostly used in the manufacture of traditional bed beds. The reason why cast iron materials are mostly used is mainly because cast iron materials have high compressive strength, small thermal expansion coefficient, stable size, good fluidity, easy processing, and mature processing technology. However, the material The damping characteristics of cast iron have reached the limit, and the vibration generated in the machining process cannot be eliminated, which affects the machining accuracy and surface roughness, and cast iron materials also have other disadvantages: such as complex manufacturing process, high manufacturing cost, poor corrosion resistance, and high energy consumption. , serious pollution, long processing cycle, residual thermal stress cannot be completely eliminated, poor thermal stability, poor vibration absorption, these shortcomings seriously deviate from the green development trend

Due to the existence of cracks and pores in the surface of natural granite, after cutting and crushing by mining equipment, micro-cracks and defects will inevitably appear on the surface of the aggregate. These cracks and defects are difficult for the binder to penetrate into the micro-cracks during stirring at room temperature. In the middle, the aggregate and the binder are not bonded sufficiently, which affects the compressive strength of the material