A kind of penetrating network structure polymer for grouting material and preparation method thereof

A technology of network structure and grouting material, which is applied in the field of preparation of polymers with penetrating network structure, can solve the problems of increased development cost, large amount of epoxy resin, short service life, etc., to prevent holes and faults, and to toughen epoxy resin. , the effect of improving physical and chemical properties

Active Publication Date: 2019-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above method overcomes some shortcomings of epoxy resin grouting materials (such as low wet bonding strength, poor toughness, etc.), the material chooses polyether polyol synthesized by petrochemical technology as the polyurethane base material, and its environmental friendliness Poor and difficult to degrade, and easy to age, short service life
In the process of material preparation, the amount of epoxy resin is relatively large (>50wt%), which undoubtedly increases the development cost
In addition, the addition of inorganic toughening agents is likely to cause broken chains throughout the network structure, that is, faults occur in the material body, and the life is short. There are security risks

Method used

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  • A kind of penetrating network structure polymer for grouting material and preparation method thereof
  • A kind of penetrating network structure polymer for grouting material and preparation method thereof
  • A kind of penetrating network structure polymer for grouting material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Organic acid pretreatment

[0037] At 85°C, use 60wt% citric acid aqueous solution reflux technology to process waste hydrogenated silicon-butadiene rubber particles with a particle size of 100 μm containing AO-60 antioxidant. The proportion of hydrogenated silicon-butadiene rubber particles and citric acid aqueous solution is 1g: 20mL, suction filter after 5h, wash the hydrogenated silicon-butadiene nitrile rubber particles, and dry naturally for 20h after reaching neutrality.

[0038] (2) Preparation of vegetable oil-based polyurethane prepolymer

[0039] Weigh 100 parts by weight of soybean oil-based polyol with a hydroxyl value of 110 mgKOH / g, and add 10 parts by weight of naphthalene diisocyanate, wherein the molar ratio of isocyanate to hydroxyl is 1:2. Under nitrogen protection, stirring and reacting for 1 hour at room temperature, then raising the temperature to 80° C. at 2° C. / min, and ending the reaction after 2 hours. The stirring speed was 500 rpm to obta...

Embodiment 2

[0043] The method and raw material of present embodiment and embodiment 1 are basically the same, and difference is: the waste and old hydrogenated silicon nitrile rubber particle of AO-60 antioxidant is replaced with the waste and old hydrogenated silicon butadiene rubber that does not contain AO-60 antioxidant Particles, the mass ratio of vegetable oil-based polyurethane prepolymer, epoxy resin, hydrogenated silicon-butadiene rubber particles, curing agent, diluent and curing adjustment assistant is 10: 2: 0.5: 1.3: 0.2: 0.02, to obtain soybean oil-based Polyurethane / epoxy resin runs through the network structure polymer B.

Embodiment 3

[0045] The method and raw materials of this embodiment and embodiment 1 are basically the same, the difference is: soybean oil-based polyol is replaced by palm oil-based polyol-based polyol, vegetable oil-based polyurethane prepolymer, epoxy resin, hydrogenated silicon butyronitrile The mass ratio of the rubber particles, the curing agent, the diluent and the curing adjustment aid is 10: 1.5: 0.3: 1.2: 0.1: 0.01, and the palm oil-based polyurethane / epoxy resin interpenetrating network structure polymer C is obtained.

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Abstract

The invention discloses a preparation method for a polymer with a penetration network structure and used for a grouting material. The preparation method comprises the following steps: (1) subjecting diisocyanate and vegetable oil based polyol to a contact reaction so as to obtain a vegetable oil based polyurethane prepolymer; and (2) adding hydrogenated silicon nitrile rubber particles, epoxy resin, a curing agent, a diluent and a curing adjusting additive into the vegetable oil based polyurethane prepolymer obtained in the step (1), carrying out uniform mixing in an inert atmosphere environment, and carrying out vacuum degassing and curing so as to obtain a vegetable oil based polyurethane / epoxy resin polymer with the penetration network structure. The method provided by the invention reinforces the vegetable oil based polyurethane, toughens the epoxy resin, improves the physical and chemical properties of the polymer with the penetration network structure, and is specifically applicable to application in grouting and leaking stoppage in a complicated geological-condition structure.

Description

technical field [0001] The invention relates to a method for preparing a polymer with a penetrating network structure, in particular to a method for preparing a polymer with a penetrating network structure for grouting materials. Background technique [0002] Epoxy resin (EP) has good chemical compatibility and is more likely to exhibit wetting characteristics. It has been widely used in engineering fields such as grouting plugging and bonding technology for a long time. However, in actual engineering, epoxy grouting materials generally have problems such as brittleness, poor toughness, low strain resistance, difficulty in moisture curing, unsatisfactory bonding performance in underground humid environment, high initial viscosity, and poor permeability after curing. It has been further applied in anti-seepage, plugging, reinforcement, reinforcement and other projects. Therefore, there is an urgent need to develop modified epoxy resin grouting materials with excellent toughn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/14C08L63/00C08L15/00C08G18/67C08G18/58C08G18/10
Inventor 赵亮马蕊英方向晨王刚
Owner CHINA PETROLEUM & CHEM CORP
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