Method for researching modification technology of high-activity single-variety shoe material powder

A technology for technical research and powder modification is applied in the field of modification and recycling of waste polymer materials, which can solve the problems of difficult recycling of shoe material waste, and achieve the effects of low cost, environmental requirements, and simple preparation process.

Pending Publication Date: 2021-01-29
FUJIAN NORMAL UNIV
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AI-Extracted Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that shoe material waste is difficult to recycle at present, and to provide a method for the research of high-activity single-variety shoe material powder ...
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Abstract

The invention discloses a method for researching a modification technology of high-activity single-variety shoe material powder, which is used for efficiently preparing ultramicro active shoe materialpowder by utilizing a normal-temperature continuous solid-phase mechanochemical crushing and force activation technology. The technology can break through the problems that superfine grinding, forceactivation cross-linking and high-toughness leather-making and shoe-making solid waste are difficult to achieve in the prior art and equipment, and is an important way for recycling, harmlessness andindustrialization treatment of single-variety shoe material leftovers. According to the technical scheme, the method comprises the following steps: firstly, classifying and recycling, separately treating different types of shoe material wastes, crushing and collecting the classified shoe materials by using a double-roller open mill, and then performing superfine grinding and solid-phase shearing and grinding by using a solid-phase mechanochemical mill, thereby finally obtaining active single-variety shoe material powder. The technology can be operated at normal temperature and is high in large-scale production and output efficiency. And moreover, the method highly meets the national resource circulation strategy requirements, no chemical additive is added, and no secondary pollution is caused.

Technology Topic

ChemistryProcess engineering +4

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  • Method for researching modification technology of high-activity single-variety shoe material powder
  • Method for researching modification technology of high-activity single-variety shoe material powder
  • Method for researching modification technology of high-activity single-variety shoe material powder

Examples

  • Experimental program(3)

Example Embodiment

[0021]Example 1
[0022]1) Sorting and recycling shoe material waste, using rubber shoe material waste (such as trimmed scraps, scraps, defective products, etc.) as raw materials and drying them.
[0023]2) Weigh 5 kg of dried rubber shoe material waste, first pretreat it with a two-roll mill to obtain the crushed rubber waste.
[0024]3) Weigh the broken rubber shoe material waste obtained in step (2), use mechanochemical milling and activation technology, and perform ultrafine pulverization and solid-phase shear milling with a solid-phase mechanochemical mill to prepare particle size Highly active rubber powder with a size of 300 um;
[0025]Obtained by XRD experimentfigure 2 The X-ray diffraction pattern of the highly active rubber powder is determined byfigure 2 It can be seen that the diffraction peak with 2θ of 23.0° corresponds to the (002) crystal plane of carbon, and the diffraction peak with 2θ of 29.5° corresponds to Ca3SiO5(422) crystal plane, and the diffraction peak with 2θ of 31.9° corresponds to CaSi2The (011) crystal plane, indicating that the synthesized high activity rubber powder contains Ca3SiO5And CaSi2.
[0026]Obtained by SEM experimentimage 3 It can be seen from the figure that the obtained rubber powder is relatively uniform, with a particle size of about 50 µm, and the surface is smooth and smooth, and there are no other particles.
[0027]FromFigure 4 Infrared spectrum analysis can be obtained: at 3409.17 cm-1Is the O-H stretching vibration peak in Si-OH, at 2921.51 cm-1It is the asymmetric vibration absorption peak of C-H at 1620.48 cm-1And 1453.07 cm-1Where are C=C and CH2The stretching vibration peak. At 1114.69 cm-1And 467.67 cm-1Here are the stretching vibration peaks of Si-O-Si and C=C-C respectively. The above analysis shows that the rubber powder forms a cross-linked network structure with Si-O-Si bonds as the main body, and organic functional groups are all connected to Si atoms.
[0028]FromFigure 5Raman spectrum analysis shows that the final milled highly reactive rubber powder is cis-1,4 polybutadiene (also known as butadiene rubber), which can be used as a renewable raw material and has considerable recycling benefits.
[0029]Therefore, the research method of high-activity single-variety shoe material powder modification technology can not only greatly improve the recycling rate of shoe material waste, but also is environmentally friendly, low-cost, and has good application prospects.

Example Embodiment

[0030]Example 2
[0031]1) Separate and recycle shoe material waste, and use EVA shoe material waste (such as trimmed scraps, scraps, defective products, etc.) as raw materials, and dry them.
[0032]2) Weigh 10 kg of dried EVA shoe material waste, first pretreat it with a two-roll mill to obtain crushed EVA waste.
[0033]3) Weigh the crushed EVA shoe material waste obtained in step (2), use mechanochemical milling and activation technology, and perform ultrafine pulverization and solid-phase shear milling with a solid-phase mechanochemical mill to prepare particle size Highly active EVA powder with a size of 400 um;

Example Embodiment

[0034]Example 3
[0035]1) Separate and recycle shoe material waste, and use TPU shoe material waste (such as trimmed scraps, scraps, defective products, etc.) as raw materials, and dry them.
[0036]2) Weigh 8 kg of dried TPU shoe material waste, first pretreat it with a two-roll mill to obtain crushed EVA waste.
[0037]3) Weigh the crushed TPU shoe material waste obtained in step (2), use mechanochemical milling and activation technology, and perform ultrafine pulverization and solid-phase shear milling with a solid-phase mechanochemical mill to prepare particle size Highly active TPU powder with a size of 200 um;

PUM

PropertyMeasurementUnit
Particle size50.0µm

Description & Claims & Application Information

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