Physical And Mechanical Properties Of Multi-Fiber Self-Insulation Shale Sintering Materials

Much fiber since the insulation shale sintering materials is useless for processing of straw,put it into the required size,in accordance with the quality percentage of shale in the shale remain the same(5%)with grain size of 40 ~ 60 mesh straw powder as pore-forming agent,at the same time,the fiber reinforced materials(basalt fiber,sepiolite fiber powder,mica powder)respectively according to different quality percentage added to the shale,shale after extrusion of a certain intensity and a certain degree of roasting process steps,form a new type of lightweight microporous insulation wall materials.Compared with the self-insulating sintered material of plant fiber shale without fiber reinforcement,its compressive strength is improved,its volume density and thermal conductivity are not increased or even reduced,and the variation range of porosity and apparent porosity is small and irregular.In this paper,using shale,straw pore-making agent and fiber reinforcing material as raw materials,a series of technical methods of brick making such as mixing,stirring,pressing,drying and roasting were studied.In the test for raw materials for synthetic thermal analysis,XRD analysis and analysis on the physical properties of sintered samples in different dosage of fiber reinforced material made by shale sintered porous brick,study its compressive strength,thermal conductivity,bulk density,porosity and so on the various properties,analysis of different fiber reinforced material and dosage on the properties of plant fiber shale sintered microporous materials influence law and explore the optimal fiber reinforced materials and the optimal dosage.Research and analysis to get the following results:(1)with the increase of dosage of sepiolite fiber powder,shale sintering plant fiber materials declining volume density,compressive strength between 0%-2.0%(mass percent)as the sepiolite fiber powder content increase the compressive strength will increase in,and in between 2.0% 3.0%(mass percent)as the sepiolite fiber powder dosage to increase its compressive strength decreases,adding sepiolite fibre plant fiber shale after sintering material coefficient of thermal conductivity is reduced;(2)with the increase of fibre mica powder content,shale sintering plantfiber materials falling volume density,compressive strength between 0%-2.5%(mass percent)as fibre mica powder content increase the compressive strength will increase in,and inbetween 2.5% 3.5%(mass percent)as the mica fiber powder dosage to increase its compre ssive strength decreases,add mica fiber plant fiber shale after sintering material coefficient of thermal conductivity decreases;With the increase of basalt fiber content,the volume density of plant fiber shale sintered material showed a decreasing trend,the compressive strength of the specimen increased,and the thermal conductivity of the plant fiber shale sintered material decreased after basalt fiber was added.after adding the three fiber reinforced materials,the obvious porosity and water absorption of the three fiber reinforced materials showed no regular small amplitude changes.