High-toughness, high-temperature-resistant, impact-resistant road material and preparation method thereof

A high-temperature and impact-resistant technology, applied in the field of high-toughness, high-temperature-resistant and impact-resistant road materials and their preparation, and the field of road materials, can solve the problem that flexibility and impact resistance affect the road performance of the bridge deck pavement and reduce road traffic. Service level, poor impact resistance, etc., to achieve the effect of high fluidity, improved bonding effect, and high thermal stability

Active Publication Date: 2021-02-09
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most epoxy resins are room-temperature curing materials with high crosslinking density after curing, and the cured products have disadvantages such as low toughness and poor impact resistance.
Faced with the increasing demand for heavy traffic roads, the lack of flexibility and impact resistance of epoxy resins affects the road performance of the bridge deck pavement to a certain extent, thereby reducing the level of road traffic service

Method used

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  • High-toughness, high-temperature-resistant, impact-resistant road material and preparation method thereof
  • High-toughness, high-temperature-resistant, impact-resistant road material and preparation method thereof
  • High-toughness, high-temperature-resistant, impact-resistant road material and preparation method thereof

Examples

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Effect test

preparation example Construction

[0053] The preparation process of the poly-p-phenylene benzobisoxazole fiber is as follows: 4,6-diaminoresorcinol and trimethylsilazane are used as raw materials and prepared by trimethylsilylation.

[0054] Poly-p-phenylene benzobisoxazole fiber has a heat-resistant temperature of 600°C, has excellent thermal stability, and can be dissolved in solvents such as polyphosphoric acid and polyphosphoric acid methylsulfonic acid.

Embodiment 1

[0057] This example provides a preparation method of a road material with high toughness, high temperature resistance and impact resistance. The method includes the following steps:

[0058] Step 1, preparing ammoniated poly-p-phenylene benzobisoxazole fiber:

[0059] soaking the pretreated poly-p-phenylene benzobisoxazole fibers in ethylenediamine methanol solution to obtain ammoniated poly-p-phenylene benzobisoxazole fibers;

[0060] In step 1, the pretreatment process is: soak the poly-p-phenylenebenzobisoxazole fiber in acetone for 12 hours to remove surface attachments, take it out, and place it in a blast drying oven for 4 hours at 100°C. The dried poly-p-phenylene benzobisoxazole fibers were immersed in epichlorohydrin solution and irradiated with gamma rays, then washed with acetone repeatedly for 12 h, and dried at 100 °C for 1 h.

[0061] In step 1, soak the pretreated poly(p-phenylenebenzobisoxazole) fiber in an ethylenediamine methanol solution at 25° C. for 12 hour...

Embodiment 2

[0078] This example presents a method for preparing a high-toughness, high-temperature-resistant, and impact-resistant road material. The preparation steps of this method are basically the same as those in Example 1. The difference lies in the preparation of the high-toughness, high-temperature, and impact-resistant road material in this example. In the method, the proportioning of each main raw material is in parts by weight:

[0079] Add 10 parts of curing agent for every 100 parts of epoxy resin;

[0080] The fiber skeleton corresponding to every 100 parts of epoxy resin is made of 30 parts of poly-p-phenylene benzobisoxazole fiber raw materials;

[0081] The fiber skeleton corresponding to every 100 parts of epoxy resin is hyperbranched polysiloxane made from the following raw materials: 8 parts of MPS, 10 parts of GPTMS, 16 parts of distilled water, and 40 parts of absolute ethanol.

[0082] The high-toughness, high-temperature, and impact-resistant road material is prep...

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Abstract

The invention provides a road material with high toughness, high temperature resistance and impact resistance and a preparation method thereof. The method comprises the following steps: step 1, pretreated polyparaphenylene benzobisoxazole fibers in ethylenediamine methanol Soak in the solution to obtain ammoniated poly-p-phenylene benzobisoxazole fibers; step 2, mix the ammoniated poly-p-phenylene benzobisoxazole fibers prepared in step 1 with acrylate for addition reaction to obtain Acrylate-poly-p-phenylene benzobisoxazole fiber; step 3, the acrylate-poly-p-phenylene benzobisoxazole fiber obtained in step 2 is grafted with hyperbranched polysiloxane to obtain Modified poly-p-phenylene benzobisoxazole fiber; step 4, the modified poly-p-phenylene benzobisoxazole fiber prepared in step 3 is evenly spread and laid to form fibers, and curing agent is added to the epoxy resin The pouring material is prepared, and the pouring material is evenly poured on the flat fiber skeleton, and solidified to obtain a high-toughness, high-temperature, high-temperature, and impact-resistant road material.

Description

technical field [0001] The invention belongs to the field of road materials and relates to road materials, in particular to a road material with high toughness, high temperature resistance and impact resistance and a preparation method thereof. Background technique [0002] The interlayer bonding effect of asphalt pavement affects the performance of the pavement. Insufficient interlayer bonding will lead to slippage, delamination, fatigue cracks and other diseases of the asphalt pavement. And for the bridge deck pavement layer, there is also the same problem. As the weakest system in the bridge deck pavement structure, the quality of the waterproof bonding layer (that is, the interlayer of the bridge deck) is not only related to the quality of the bridge deck pavement, but also affects the overall structural life and service performance of the bridge. In the long-term research and application process at home and abroad, it is found that epoxy resin has obvious advantages in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C09J11/08D06M13/332D06M13/224D06M15/643D06M101/30
CPCC08L2201/08C08L2205/16C09J11/08C09J163/00D06M13/2246D06M13/332D06M15/643D06M2101/30C08L79/04
Inventor 王朝辉韩冰樊振通陆由付傅豪迟朝明陈宝田垚张长林李林周骊巍曾伟
Owner CHANGAN UNIV
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