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PET/blast furnace slag composite cement-based wave-absorbing material and preparation method thereof

A blast furnace slag and wave absorbing material technology, which is applied in the intersection of electromagnetics and material science, can solve the problems of high density and thickness, narrow absorption frequency band, and high cost, and achieves low density and thickness, wide absorption frequency band and low cost. Effect

Inactive Publication Date: 2017-06-30
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the existing technology, the present invention provides a PET / blast furnace slag composite cement-based wave-absorbing material and its preparation method, which solves the problem of the cement-based wave-absorbing material having too much density and thickness, narrow absorption frequency band, and high cost in the prior art. technical issues

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  • PET/blast furnace slag composite cement-based wave-absorbing material and preparation method thereof
  • PET/blast furnace slag composite cement-based wave-absorbing material and preparation method thereof
  • PET/blast furnace slag composite cement-based wave-absorbing material and preparation method thereof

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Embodiment 1（2

[0041] The dosage of each raw material of the PET / blast furnace slag composite cement-based wave-absorbing material in this embodiment is shown in Table 1. The preparation method of the PET / blast-furnace slag composite cement-based wave-absorbing material includes the following steps:

[0042] S1. Weigh the raw materials in percentage by weight, put PET chips, cement, and blast furnace slag into the mortar mixer, and then add water to form a cement slurry with a water-cement ratio of 0.35. Among them, water is added twice, and poured into the first 2 / 3 of the total volume of water, after stirring for 5 minutes, pour in the remaining amount of water, and stir for another 5 minutes to obtain cement paste;

[0043] S2. Add wave absorbing agent and polypropylene fiber to the cement paste prepared in step S1, stir for 5 minutes, pour into the mold, vibrate for 1 minute, and scrape the surface to obtain a sample;

[0044] S3. Water the sample prepared in step S2 for 24 hours at room...

Embodiment 2（3

[0046]The dosage of each raw material of the PET / blast furnace slag composite cement-based wave-absorbing material in this embodiment is shown in Table 1. The preparation method of the PET / blast-furnace slag composite cement-based wave-absorbing material includes the following steps:

[0047] S1. Weigh the raw materials in percentage by weight, put PET chips, cement, and blast furnace slag into the mortar mixer, and then add water to form a cement slurry with a water-cement ratio of 0.35. Among them, water is added twice, and poured into the first 2 / 3 of the total volume of water, after stirring for 5 minutes, pour in the remaining amount of water, and stir for another 5 minutes to obtain cement paste;

[0048] S2. Add wave absorbing agent and polypropylene fiber to the cement paste prepared in step S1, stir for 5 minutes, pour into the mold, vibrate for 1 minute, and scrape the surface to obtain a sample;

[0049] S3. Water the sample prepared in step S2 for 24 hours at room ...

Embodiment 3（4

[0051] The dosage of each raw material of the PET / blast furnace slag composite cement-based wave-absorbing material in this embodiment is shown in Table 1. The preparation method of the PET / blast-furnace slag composite cement-based wave-absorbing material includes the following steps:

[0052] S1. Weigh the raw materials in percentage by weight, put PET chips, cement, and blast furnace slag into the mortar mixer, and then add water to form a cement slurry with a water-cement ratio of 0.35. Among them, water is added twice, and poured into the first 2 / 3 of the total volume of water, after stirring for 5 minutes, pour in the remaining amount of water, and stir for another 5 minutes to obtain cement paste;

[0053] S2. Add wave absorbing agent and polypropylene fiber to the cement paste prepared in step S1, stir for 5 minutes, pour into the mold, vibrate for 1 minute, and scrape the surface to obtain a sample;

[0054] S3. Water the sample prepared in step S2 for 24 hours at room...

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Abstract

The invention provides a PET / blast furnace slag composite cement-based wave-absorbing material and a preparation method thereof, belonging to the field of cross technology of electromagnetism and material science. The PET / blast furnace slag composite cement-based wave-absorbing material is prepared from the following raw materials: PET fragments, blast furnace slag, a wave-absorbing agent, polypropylene fiber, cement and water. The PET / blast furnace slag composite cement-based wave-absorbing material provided by the invention meets requirements on mechanical properties in engineering application, and has good electromagnetic wave absorption properties in a range of 2 to 18 GHz, a wide absorption frequency range, minimal reflectivity of -30 dB or below and a bandwidth of 12 GHz or above when reflectivity is -8 dB or below; and the prepared wave-absorbing material is low in density and thickness, high in strength, low in cost and simple in construction process.

Description

technical field [0001] The invention relates to the intersecting technical field of electromagnetism and material science, and relates to a PET / blast furnace slag composite cement-based wave-absorbing material and a preparation method thereof. Background technique [0002] PET (polyethylene terephthalate) is the first linear thermoplastic polymer to be industrialized, and is widely used in the production of plastic beverage bottles, food packaging bags and other products. So far, the annual consumption of PET plastic beverage bottles in the world is about 20 million tons, and its annual growth rate is about 15%, but the amount of PET plastic recycling is very limited. Because PET plastic materials are not biodegradable, sorting and recycling waste PET plastics is conducive to saving resources and effectively reducing environmental pollution. Among them, the application of waste PET plastics to the production of high-performance concrete can give full play to PET's good engi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/00017C04B2201/50C04B18/20C04B18/141C04B16/0633C04B14/022C04B14/024C04B22/06
Inventor 张月芳郝万军陈文钦虞学红
Owner HAINAN UNIVERSITY
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