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A kind of reinforced and toughened high temperature resistant road material and its preparation method

A technology of strengthening, toughening and high temperature resistance, which is applied in fiber processing, textiles and papermaking, fiber types, etc. It can solve the problems of low toughness and poor high temperature resistance, and achieve low toughness, improved bonding effect, and good fluidity and solubility effects

Active Publication Date: 2020-05-19
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a reinforced toughened high temperature resistant road material and its preparation method, which can solve the characteristics of low toughness and poor high temperature resistance after epoxy resin is cured

Method used

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  • A kind of reinforced and toughened high temperature resistant road material and its preparation method
  • A kind of reinforced and toughened high temperature resistant road material and its preparation method
  • A kind of reinforced and toughened high temperature resistant road material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This example provides a reinforced and toughened high temperature resistant road material, which is made of the following raw materials in parts by weight: 20 parts of divinyl sulfone, 40 parts of 1-(2-aminoethyl) piperazine, heterocyclic 150 parts of aramid fiber, 100 parts of epoxy resin, and 140 parts of curing agent.

[0038] Wherein, the structural formula of the heterocyclic aramid fiber is:

[0039]

[0040] Wherein: n ranges from 100 to 200.

[0041] The heterocyclic aramid fiber is a fully aromatic heterocyclic polyamide whose main chain contains a pyridine ring, can be dissolved in organic solvents such as dimethyl sulfoxide and N,N-dimethylformamide, and has a melting point greater than 360°C.

[0042] The epoxy resin is a bisphenol A epoxy resin with a slightly yellow appearance, an epoxy value of 0.41, a viscosity of 14.2 Pa·s, and a number average molecular weight of 487.

[0043] The curing agent is methyl tetrahydrophthalic anhydride.

[0044] The ...

Embodiment 2

[0059] This example provides a reinforced and toughened high-temperature-resistant road material, which is made of the following raw materials in parts by weight: 30 parts of divinylsulfone, 30 parts of 1-(2-aminoethyl)piperazine, heterocyclic 150 parts of aramid fiber, 100 parts of epoxy resin, and 140 parts of curing agent.

[0060] The selection and specification of raw material in the present embodiment are identical with embodiment 1.

[0061] The preparation method of the reinforced and toughened high temperature resistant road material of this embodiment is the same as that of Embodiment 1.

Embodiment 3

[0063] This example provides a reinforced and toughened high-temperature-resistant road material, which is made of the following raw materials in parts by weight: 30 parts of divinylsulfone, 20 parts of 1-(2-aminoethyl)piperazine, heterocyclic 150 parts of aramid fiber, 100 parts of epoxy resin, and 140 parts of curing agent.

[0064] The selection and specification of raw material in the present embodiment are identical with embodiment 1.

[0065] The preparation method of the reinforced and toughened high-temperature-resistant road material in this embodiment is the same as that in the embodiment 1 except for the first step.

[0066] The difference between Step 1 of this embodiment and Step 1 of Example 1 is that the hyperbranched polysulfone amine prepared in Step 1 is subjected to amino end-capping treatment according to the following process:

[0067] Add 30 mL of chloroform to the hyperbranched polysulfone amine, then dissolve 2 mL of triethylamine in 15 mL of chlorofor...

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Abstract

The invention provides a reinforcing and toughening high temperature-resistant material used for road and a production method thereof. The high temperature-resistant material comprises the following components: 20-30 parts of divinyl sulfone, 20-40 parts of 1-(2-aminoethyl)piperazine, 140-160 parts of heterocyclic aramid fiber, 100 parts of epoxy resin, and 130-150 parts of a curing agent. By aiming at the physical treatment and chemical treatment problems in the prior art, 1-(2-aminoethyl)piperazine and divinyl sulfone are used for preparing hyper branched polysulfone amine; a reduction medium and a nitrated medium are used for processing the heterocyclic aramid fiber, and the heterocyclic aramid fiber with an amino group on the surface is obtained; the hyper branched polysulfone amine isgrafted to the surface of the heterocyclic aramid fiber after nitrated processing, the fibers are uniformly distributed and spread, and a skeleton is formed; the epoxy resin and a casting material prepared by a curing agent are used for uniformly casting the spread fiber skeleton, after solidification, the reinforcing and toughening high temperature-resistant material can be obtained. The raw materials are easily available, a reaction process is controllable, the technical difficulty is reduced, and the material has excellent mechanical properties.

Description

technical field [0001] The invention belongs to the field of road materials and relates to road materials, in particular to a reinforced, toughened and high-temperature-resistant road material and a preparation method thereof. Background technique [0002] At present, there are mainly two kinds of materials for steel bridge deck pavement bonding layer, asphalt and reactive resin. Epoxy resin, as a representative of reactive resin materials, was introduced into China very early. However, most epoxy resins are room-temperature curing materials with low toughness after curing and insufficient high-temperature resistance. Therefore, the toughening of epoxy resins has become the focus and difficulty of its application. Modified epoxy resin with fiber is one of the important toughening means. Heterocyclic fiber has the characteristics of high strength, high temperature resistance, and chemical corrosion resistance. However, the fiber itself has a smooth surface and low chemical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/10C08L63/00D06M15/63D06M13/127D06M13/02D06M11/65D06M11/55D06M13/188D06M11/71D06M11/80D06M101/36
CPCC08L77/10C08L2201/08D06M11/55D06M11/65D06M11/71D06M11/80D06M13/02D06M13/127D06M13/188D06M15/63D06M2101/36C08L63/00
Inventor 王朝辉傅一陈谦左志武陈宝张长林周骊威李林陈渊召李振霞
Owner CHANGAN UNIV