A method of increasing the drilling and grinding speed of drillable composite materials
A composite material, drilling and grinding technology, applied in the field of improving the drilling and grinding speed of drillable composite materials, can solve the problems of reducing the overall mechanical properties and low strength of drillable composite materials, achieve good controllability and adaptability, and improve drilling and grinding Speed, the effect of increasing the drilling and grinding rate
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Embodiment 1
[0024] During the preparation of the drilled composite matrix formulation, the polyurethal is prepared, and the expansion agent is dispersed in an aqueous solution, and the wrapped in the urea microcapsule by high speed stirring (which is structured. figure 1 As shown in, the urea microcapsule wrapped therebetzimide is uniformly dispersed into the matrix material of the composite material, such as figure 2 As shown, the dosage of the expansion agent is used in the amount of 3% of the weight of the composite material. The expansion agent coupling can decompose at a temperature above the operating temperature of the composite material, and the composite material will produce a large amount of heat during the drilling process, and the contact surface of the composite material produces a large amount of heat, the temperature increases, and reaches the expansion. When the agent decomposes temperature 200 ° C, the expansion agent decomposes a large amount of gas, which produces a large ...
Embodiment 2
[0029] During the preparation of the base of the drilled composite material, the use of a normal pressure process process is prepared from magnesium carbonate-based SiO. 2 Gas-sol particulate. It is a substrate material which is uniformly dispersed as an additive to a composite material, and the decomposition mechanism of the expansion agent is as follows:
[0030]
[0031] The expansion agent can decompose at a temperature higher than the working temperature of the composite material, and when the expansion agent decomposes the temperature of 200 ° C, the expansion agent decomposes a large amount of gas, which produces a large amount of microcrack in the base material of the composite, thereby Mechanical properties of composites, rapidly being destroyed, and its appearance is like Figure 4 As shown, the composite material used is a polyester fiber material and a polyester fiber / carbon fiber mixed binding, and in the figure, a total of 5 sets of composite materials (a composit...
Embodiment 3
[0033] During the preparation of the gravizable composite matrix formulation, SiO is prepared to wrap aluminum sulfate and sodium bicarbonate (1: 6) of sodium bicarbonate (1: 6) of sodium hydrogencarbonate (1: 6) using a normal pressure process flow. 2 Aerosol. It is uniformly dispersed as an additive to a base material of the composite material. When the material is decomposed under external force damage, the decomposition mechanism is as follows:
[0034] Al 2 (SO 4 ) 2 + 6nahco 3 → 2Al (OH) 3 + 6CO 2 ↑ + 3NA 2 SO 4
[0035] The bonding between the reinforcing fibers is destroyed, thereby losing the mechanical properties of the composite material, rapidly being destroyed, the relationship between the mechanical change data and the additive content is as Figure 5 As shown, the composite material used is 2 PET + 2CF fibers, from Figure 5 It can be seen in that the additive is 2% effective.
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