A kind of modified epoxy asphalt particle and its preparation and application

A technology for epoxy asphalt and modified asphalt, which is applied in chemical instruments and methods, drilling compositions, building components, etc., can solve the problems of poor particle deformability, complicated method and process, etc. The effect of simple process and convenient operation

Active Publication Date: 2022-04-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of the complex process of preparing high-softening-point asphalt particles that meet the requirements of drilling fluids in the prior art, the preparation process requires the use of organic solvents, and the introduction of other additives that destroy the use system. Asphalt particles cannot be stored at room temperature for a long time, or crushed. Due to defects such as poor deformability of the particles, the present invention provides a modified epoxy asphalt particle and its preparation and application. stable storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Heat 200g of oxidized pitch with a softening point of 82.5°C to a molten state, add 18.5g of nonylphenol, and stir at 160°C for 30 minutes. Add 6.5g polysulfone resin and 4.8g glycidyl methacrylate and continue stirring for 15min to obtain modified asphalt. Cool the obtained modified asphalt to 120°C, add 31.8g of hydrogenated tallow propylene diamine and stir for 10min, then add 45.6g of E-44 type epoxy resin, and continue to stir until uniform. Keep the temperature at 130°C for 6 hours, and cool to obtain modified epoxy asphalt. Then add 5.8g of graphite, grind at room temperature, and sieve to obtain modified epoxy asphalt particles.

Embodiment 2

[0050] Heat 200g of deasphalt with a softening point of 94.6°C to a molten state, add 36.2g of nonylphenol, and stir at 175°C for 25 minutes. Add 12.2g of polyethersulfone resin and 8.6g of glycidyl tertiary carbonic acid ester and continue stirring for 25min to obtain modified asphalt. Cool the obtained modified asphalt to 135°C, add 26.5g of octadecyldimethyl tertiary amine and stir for 15min, then add 51.3g of CYD-128 type epoxy resin, and continue stirring until uniform. Keep the temperature at 125°C for 5 hours, and cool to obtain modified epoxy asphalt. Add 11.8g of montmorillonite, crush at room temperature, and sieve to obtain modified epoxy asphalt particles.

Embodiment 3

[0052] Heat 200g of deasphalt with a softening point of 100.2°C to a molten state, add 28.8g of phenol, and stir for 30min at 170°C. Add 10.8g polysulfone resin and 15.6g glycidyl methacrylate and continue stirring for 30min to obtain modified asphalt. Cool the obtained modified asphalt to 150°C, add 38.5g of coco-based 1,3-propylenediamine and stir for 20 minutes, then add 47.5g of CYD-128 epoxy resin, and continue to stir until uniform. Keep the temperature at 140°C for 7.5 hours, and cool to obtain modified epoxy asphalt. Then add 10.2 g of montmorillonite, crush at room temperature, and sieve to obtain modified epoxy asphalt particles.

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PUM

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Abstract

The invention discloses a modified epoxy asphalt particle, its preparation method and application. The modified epoxy asphalt particles include modified asphalt, epoxy resin, and curing agent; wherein the modified asphalt includes base asphalt, a compatibilizer, and a toughening agent. The modified epoxy asphalt particle of the present invention not only has a small particle size, but also has a certain elastic deformation ability, and has excellent high temperature resistance performance, and can be stored stably at normal temperature. The modified epoxy asphalt particles are especially suitable for water-based drilling fluid.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling and production, and in particular relates to a modified epoxy asphalt particle and its preparation and application. Background technique [0002] High softening point asphalt refers to asphalt with a softening point above 100°C, especially above 120°C. High softening point asphalt is widely used because of its excellent high temperature resistance. If it is used as a roof covering for building a house, it will not become very soft or even runny even in the hot summer. It can also be used in drilling operations in deep oil and gas fields. As an important part of drilling fluid, it can play a role in plugging, preventing collapse, stabilizing the well wall and reducing fluid loss under high temperature conditions. In addition, it can also be used as a modification additive for polymer materials. [0003] Asphalt products are widely used in the process of oil and gas drilling. They can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L81/06C08L63/00C08K13/02C08K5/13C08K3/04C08K3/34C08K5/1515C09K8/035C09K8/467C09K8/42
CPCC08L95/00C09K8/035C09K8/467C09K8/426C08L2205/03C08L2201/08C08L81/06C08L63/00C08K13/02C08K5/13C08K3/04C08K3/346C08K5/1515
Inventor 傅丽李志军郭皎河张建峰刘树华郭小圣刘成
Owner CHINA PETROLEUM & CHEM CORP
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