1. A method comprising:
creating a blend of a carbon nanomaterials, wherein the blend of the carbon nanomaterials at least one of a carbon nanofiber, a carbon nanotube, a graphite nanoparticle and an amorphous carbon;
dispersing the blend of the at least one of the carbon nanofiber, the carbon nanotube, the graphite nanoparticle and the amorphous carbon to form a dispersed mixture;
adding a plasticizer and a sand to the dispersed mixture within 3 minutes;
adding at least one of a water and a cement binding agent to the dispersed mixture after the plasticizer and the sand have been added.
2. The method of claim 1 wherein the blend of the at least one of the carbon nanofiber, the carbon nanotube, the graphite nanoparticle and the amorphous carbon is obtained through:
detecting a presence of an untreated gas mixture when the untreated gas mixture is fed in a quartz tube through a gas supply;
treating the untreated gas mixture with a high-voltage discharge plasma in a zone between a cathode and an anode to create a treated gas mixture;
releasing the treated gas mixture in a deposition chamber through an opening of the anode; and
collecting a deposited carbon nanomaterial automatically with a plurality of cleaner blades.
3. The method of claim 2 wherein the mass percent of the blend of the at least one of the carbon nanofiber, the carbon nanotube, the graphite nanoparticle and the amorphous carbon ranges from 0.0125% to 1%.
4. The method of claim 3 wherein the mass percent of the cement binding agent ranges from 15% to 55%.
5. The method of claim 4 wherein the mass percent of the sand ranges from 5% to 50%.
6. The method of claim 5 wherein the mass percent of the plasticizer ranges from 0.05% to 1%.
7. The method of claim 6 wherein the mass percent of the carbon nanofiber in the blend of the at least one of the carbon nanofiber, the carbon nanotube, the graphite nanoparticle and the amorphous carbon ranges from 20-40%.
8. The method of claim 7 wherein the mass percent of the carbon nanotube in the blend of the at least one of the carbon nanofiber, the carbon nanotube, the graphite nanoparticle and the amorphous carbon ranges from 20-30%.
9. The method of claim 8 wherein the mass percent of the graphite nanoparticles in the blend of the at least one of the carbon nanofiber, the carbon nanotube, the graphite nanoparticle and the amorphous carbon ranges from 2-5%.
10. A method comprising:
creating a blend of a carbon nanomaterials,
wherein the blend of the carbon nanomaterial is obtained by treating an untreated gas mixture with a high-voltage discharge plasma in a zone between a cathode and an anode to create a treated gas mixture, releasing the treated gas mixture in a deposition chamber through an opening of the anode and collecting a deposited carbon nanomaterial;
adding a plasticizer and a sand to the dispersed mixture within 3 minutes; and
adding at least one of a water and a cement binding agent to the dispersed mixture after the plasticizer and the sand have been added.
11. The method of claim 10 wherein the blend of the carbon nanomaterial contains at least one of a carbon nanofiber, a carbon nanotube, a graphite nanoparticle and an amorphous carbon.
12. The method of claim 10 wherein:
the mass percent of the blend of the at least one of the carbon nanofiber, the carbon nanotube, the graphite nanoparticle and the amorphous carbon ranges from 0.0125% to 1%, the mass percent of the cement binding agent ranges from 15% to 55%, the mass percent of the sand ranges from 5% to 50% and the mass percent of the plasticizer ranges from 0.05% to 1%.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An antitheft system comprising an alarm unit attachable to an article to be protected from theft, and a signal transmitter for transmitting an alarm activating signal to the alarm unit, the alarm unit comprising:
receiving means for receiving signals from outside,
alarm means for producing an alarm in response to an alarming command,
nullifying means operable in response to a nullifying command to nullify the signal received by the receiving means for a predetermined period of time subsequent to the reception of the nullifying command, and
control means operable upon reception of the received signal from the receiving means to judge whether the received signal is the alarm activating signal, and give the alarming command to the alarm means when the signal is the alarm activating signal or give the nullifying command to the nullifying means when the signal is not the alarm activating signal.
2. An antitheft system according to claim 1 wherein the nullifying means of the alarm unit comprises a gate circuit interposed between the receiving means and the control means and operable in response to the nullifying command to prevent the signal received by the receiving means from passing through the gate circuit for a predetermined period of time subsequent to the reception of the nullifying command.
3. An antitheft system according to claim 1 wherein the alarm unit comprises signal processing means capable of processing as specified the signal received by the receiving means and feeding the processed signal to the control means while being supplied with electric power, and power source means for supplying electric power to the signal processing means, and the nullifying means comprises a deenergizing circuit operable in response to the nullifying command to cease the supply of electric power from the power source means to the signal processing means for a predetermined period of time subsequent to the reception of the nullifying command.
4. An antitheft system according to claim 1 wherein the control means of the alarm unit judges whether the received signal is the alarm activating signal in response to a clock signal supplied from outside, and the alarm unit further comprises clock supply means for supplying the clock signal to the control means, and a clock halting control means for ceasing the clock signal supplying operation of the clock supply means for the predetermined period of time when the received signal is not found to be the alarm activating signal.