Polyurethane urea-rubber composite grouting material for inhibiting/breaking ice on grooved pavement and preparation method of polyurethane urea-rubber composite grouting material

A polyurethane urea and grouting material technology, applied in the field of pavement grouting materials, can solve the problems of lack of hydrophobicity and ice suppression, poor interfacial bonding performance, poor surface wear resistance, etc., which is beneficial to social promotion and mass production, and has low cost. , Improve the effect of anti-skid

Pending Publication Date: 2022-07-22

CHANGAN UNIV

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AI-Extracted Technical Summary

Problems solved by technology

[0004] However, at present, there are generally problems with poor comprehensive performance of grouting materials for groove filling, which are mainly manifested in: (1) poor b...

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Method used

According to table 2, it can be seen that the surface of embodiment 1~9 polyurethane urea-rubber composite grouting material all shows as hydrophobicity, has lower surface free energy, and wherein the ice adhesion of embodiment 1 is minimum 208kPa, embodiment 9 The maximum ice adhesion force is 380kPa. Under the same amount of rubber particles, the contact angle of the grouting material tends to decrease as the particle size increases, that is, the surface tension increases, and the ice adhesion is also greater; The greater the adhesion. By comparing Example 3 and Comparative Example 1, Example 6 and Comparative Example 2, and Example 9 and Comparative Example 3, it can be seen that the addition of polyurea can increase the contact angle of the composite grouting material and reduce the ice adhesion, thereby improving ice suppression and ice breaking performance.

According to table 3, it can be seen that the shear strength and the pull-out strength of embodi...

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Abstract

The invention discloses a polyurethane urea-rubber composite grouting material for inhibiting/breaking ice on a grooved pavement and a preparation method thereof, and relates to the technical field of grouting materials for roads. The polyurethane urea-rubber composite grouting material is prepared from the following components in parts by mass: 40 to 45 parts of a polyurethane component A, 200 to 210 parts of a polyurethane component B, 50 to 55 parts of a polyurea component A, 50 to 55 parts of a polyurea component R, 14 to 21 parts of an organic solvent, 1 to 3 parts of a catalyst and 150 to 350 parts of rubber particles. The preparation method comprises the following steps: mixing polyurethane and polyurea according to a given raw material ratio, adding an organic solvent and a catalyst, stirring, adding rubber particles, and uniformly stirring to obtain the polyurethane urea-rubber composite grouting material which can be used as a filling material for grooved pavements to achieve the purposes of inhibiting and breaking ice on the pavements.

Technology Topic

PolyureaPolymer chemistry +6

Image

Examples

Experimental program(9)
Comparison scheme(3)
Effect test(1)

Example Embodiment

[0022] Example 1

[0023] The polyurethaneurea-rubber composite grouting material in this example includes, in parts by mass, 41 parts of polyurethane A component, 205 parts of polyurethane B component, 52 parts of polyurea A component, 52 parts of polyurea R component, ethyl acetate 17.5 parts of esters, 1 part of dibutyltin dilaurate, and 150 parts of rubber particles with a particle size of 0.6 mm.

[0024] The preparation method of the polyurethaneurea-rubber composite grouting material in this embodiment is as follows: firstly mixing the polyurethane A component and the polyurethane B component, mixing the polyurea A component and the polyurea R component; then adding the obtained polyurea into the polyurethane , then add ethyl acetate and dibutyltin dilaurate, and stir at 25 ° C for 3 minutes until the cementitious material is stirred evenly, and no layering and segregation occurs; then add rubber particles with a particle size of 0.6 mm in 4 times and stir. Until the rubber particles are uniformly dispersed in the cementitious material, the polyurethane urea-rubber composite grouting material is obtained.

Example Embodiment

[0025] Example 2

[0026] The polyurethaneurea-rubber composite grouting material in this example includes 233 parts by mass of rubber particles with a particle size of 0.6 mm, and the mass parts of the other components and the preparation method of the composite grouting material are the same as those in Example 1.

Example Embodiment

[0027] Example 3

[0028] The polyurethaneurea-rubber composite grouting material in this example includes 350 parts by mass of rubber particles with a particle size of 0.6 mm, and the mass parts of the other components and the preparation method of the composite grouting material are the same as those in Example 1.

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PUM

Property	Measurement	Unit
Particle size	0.6	mm
Particle size	1.18	mm
Particle size	2.36	mm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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