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Polyurethane-based impact-resistant composite material and preparation method thereof

A composite material and impact-resistant technology, applied in the field of polymer composite materials, can solve the problems of irreversible deformation of materials, and achieve the effects of overcoming irreversible shape, excellent impact resistance and processing performance

Inactive Publication Date: 2016-01-06
德清苏尔新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after being subjected to shear impact, similar to liquid shear thickening materials, its material deformation is irreversible, so it also has great limitations in practical applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Composite material of the present invention is made up of following components by weight percentage:

[0022] Thermoplastic Polyurethane 95%

[0023] Silicone Shear Thickening Gel 4.75%

[0024] Silica particles 0.25%

[0025] First, silica and silicon shear thickening gel are mixed with a rubber mixer at a temperature of 80°C for 2 hours to obtain a modified silicon shear thickening gel; then the modified silicon shear thickening gel is mixed The thick gel is blended with thermoplastic polyurethane in an internal mixer to obtain thermoplastic polyurethane-based impact-resistant composites. The internal mixer temperature was 170° C., and the time was 20 minutes.

Embodiment 2

[0027] Composite material of the present invention is made up of following components by weight percentage:

[0028] Thermoplastic Polyurethane 85%

[0029] Silicone Shear Thickening Gel 12.75%

[0030] Silica particles 2.25%

[0031] First, silica and silicon shear thickening gel are mixed with a rubber mixer at a temperature of 100°C for 1.5 hours to obtain a modified silicon shear thickening gel; then the modified silicon shear thickening gel is mixed The thick gel is blended with thermoplastic polyurethane in an internal mixer to obtain thermoplastic polyurethane-based impact-resistant composites. The temperature of the internal mixer is 190° C., and the time is 10 minutes.

Embodiment 3

[0033] Composite material of the present invention is made up of following components by weight percentage:

[0034] Thermoplastic Polyurethane 60%

[0035] Silicone Shear Thickening Gel 28%

[0036] Silica Granules 12%

[0037] First, silica and silicon shear thickening gel are mixed with a rubber mixer at a temperature of 130°C for 1 hour to obtain a modified silicon shear thickening gel; then the modified silicon shear thickening gel is mixed The thick gel is blended with thermoplastic polyurethane in an internal mixer to obtain thermoplastic polyurethane-based impact-resistant composites. The internal mixer temperature is 200° C., and the time is 5 minutes.

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PUM

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Abstract

The invention discloses a polyurethane-based impact-resistant composite material and a preparation method thereof. The composite material is prepared by melting and blending the following components in a polymer blending device in terms of weight percentage: 60-95% thermoplastic polyurethane, modified Resistant Silicone Shear Thickening Gel 5-40%. The modified silicon shear thickening gel is prepared by blending the following components in polymer blending equipment in terms of weight percentage: 70% to 95% of silicon shear thickening gel, 5% to 95% silicon dioxide particles 30%; the particle size of silica particles is 50~200 nanometers. Compared with other thermoplastic polyurethane materials, the thermoplastic polyurethane-based impact-resistant composite material obtained by the invention has better impact resistance and processing performance.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and relates to a polyurethane-based high impact-resistant material and a preparation method of the material. Background technique [0002] Shear thickening refers to the phenomenon that the viscosity of the system increases rapidly, violently and nonlinearly when it is subjected to shear force. The main principle is that when a certain material is not subjected to shear or impact force, the dispersed phase particles and the dispersion medium form a network structure due to the hydrogen bond, and the dispersed phase particles do not interfere with each other. When the force acts, the originally formed network structure gradually disintegrates, and the dispersed phase particles collide with each other to form particle clusters, which reduces the fluidity of the material, resulting in a sharp increase in its viscosity, showing a "thickening" phenomenon. When the shear force disa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K3/36
Inventor 李峰于钟梅魏刚
Owner 德清苏尔新材料有限公司