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A kind of method for preparing snow melting and ice suppression functional material from saponification residue

A technology for functional materials and saponification slag, which is applied in the field of new functional material preparation, can solve the problem of late start of research on anti-icing pavement, achieve good snow removal and ice suppression effect, easy popularization and mass production, and simple operation.

Active Publication Date: 2019-08-13
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on anti-icing pavement in my country started relatively late, and is still in the exploratory stage, and there is no report on the application of saponified slag to prepare snow-melting and anti-icing fillers.

Method used

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  • A kind of method for preparing snow melting and ice suppression functional material from saponification residue
  • A kind of method for preparing snow melting and ice suppression functional material from saponification residue
  • A kind of method for preparing snow melting and ice suppression functional material from saponification residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) The specific results of physical and chemical analysis of saponified slag are shown in the table below and attached figure 1 , as shown in the table below, the saponified slag contains a large amount of compounds such as calcium, magnesium, aluminum and iron salts. These compounds all have the effect of lowering the freezing point, and the freezing point lowering material can be obtained through subsequent activation treatment.

[0037] Element number element 1 1 CaO 69.46 2 MgO 11.83 3 SiO 2

7.254 4 Cl 6.174 5 Fe 2 o 3

2.474 6 al 2 o 3

1.861 7 SO 3

0.43 8 TiO 2

0.125 9 MnO 0.108 10 K2O 0.088 11 SrO 0.075 12 P 2 o 5

0.063 13 Na 2 o

0.045 14 CuO 0.008 15 ZnO 0.005 16 ZrO 2

- 17 NiO -

[0038] Table 1 Saponification slag elemental analysis data table

[0039] 2) Prepare a sulfuric acid solution with...

Embodiment 2

[0049] 1) Weigh 5 g of the insoluble slag M obtained by filtration in Example 1, add 0.5 g of silicon dioxide, and perform mechanical ball milling at a speed of 1000 rpm for 5 h to obtain a silicon-modified solid material M-1.

[0050] 2) Weigh 0.1 g of stearic acid, heat and melt to obtain a stearic acid solution.

[0051] 3) Weigh 1 g of the solid material M-1 obtained by ball milling in step 1), add it into 100 mL of water, and stir to obtain a suspension of M-1.

[0052] 4) Slowly add the stearic acid solution obtained in step 2) to the M-1 suspension obtained in step 3), heat to 80°C, heat and stir for 1 hour to obtain the grafted modified deicing agent solid M- 1 suspension.

[0053] 5) Filter the snow-melting agent solid M-1 suspension obtained in step 4) to obtain the snow-melting and ice-suppressing material B, and the contact angle characterization data is shown in the appendix Figure 4 .

Embodiment 3

[0055] 1) According to the dosage of 10-200g / m 2 The snow-melting and ice-suppressing material A obtained in Example 1 and the snow-melting and ice-suppressing material B obtained in Example 2) were sprinkled on the simulated road surface to carry out the snow-melting and ice-suppressing test. The comparative example is the icing condition of ordinary road surface, see the attached Figure 5 .

[0056] 2) The specific test results are shown in the following table. It can be seen from the following table that the prepared snow-melting and deicing materials A and B have a freezing point lower than -20°C, which can effectively suppress deicing and melting snow independently. It has a high anti-corrosion ability, and the final plant test results show that its salinity and toxicity are lower than ordinary deicing agents.

[0057] Table 2 Results of snow melting and ice suppression

[0058]

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Abstract

The invention discloses a method for preparing a snow melting and ice inhibiting functional material from saponated residue, and belongs to the technical field of preparation of novel functional materials. The method comprises the following steps: taking the saponated residue as a raw material, carrying out activating treatment by adopting a proper means, and introducing biomass which is abundant in sources as a modification raw material, thus preparing composite micro-capsule snow melting and ice inhibiting filler, wherein the composite micro-capsule snow melting and ice inhibiting filler comprises a carbon quantum dot composite ice point reducing type micro-capsule material agent and double-surface grafted modified snow melting and ice inhibiting filler; grafting a silica-based material to the double-surface grafted modified snow melting and ice inhibiting filler by applying digestion residue through physical and mechanical actions, so as to regulate the surface characteristics of the double-surface grafted modified snow melting and ice inhibiting filler, then introducing a surface modification material for grafting again, and balancing the moisture absorptivity and the salinity separation rate, thus obtaining the snow melting and ice inhibiting functional material having good thermal stability and good mechanical property. Self snow melting and ice inhibiting can be realized at low temperature by two prepared filler materials through a salt effect, an interface energy effect and a contact angle effect, the cost is reduced by utilizing the saponated residue, meanwhile, the treatment problem of the saponated residue is solved, and research and development of the snow melting and ice inhibiting functional material are favorably promoted.

Description

technical field [0001] The invention provides a method for preparing snow-melting and ice-suppressing functional materials from saponified slag, and belongs to the technical field of preparation of new functional materials. Background technique [0002] Saponification slag is a kind of industrial waste produced by the calcium carbide method in chemical plants. The production mechanism is the by-product of waste residue produced after the saponification reaction of milk of lime. It is a white powdery solid, and its main components are CaO, Al 2 o 3 and SiO 2 , where the general content of CaO is about 30% to 40%, which can be regarded as Ca(OH) 2 Lower electric lime. Propylene oxide is an important raw material for basic organic chemical synthesis. It is widely used in industries such as automobiles, construction, food, tobacco, medicine and cosmetics, and is an important raw material for fine chemical products. During the "Eleventh Five-Year Plan" period, my country's pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/18
CPCC09K3/18
Inventor 马伟孟凡庆陈振张清郭丽燕王墨炎
Owner DALIAN UNIV OF TECH
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