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Method for degrading and separating glass fiber reinforced composite material waste and preparing sulfonated asphalt by using glass fiber reinforced composite material waste

A reinforced composite material and glass fiber technology, applied in chemical instruments and methods, processing tar pitch/petroleum pitch/natural pitch, tar pitch/petroleum pitch/natural pitch, etc., can solve the problem of poor solvent resistance, Low compressive tensile strength, low cohesion of fluid loss reducer, etc., to achieve easy post-processing, low cost, and improved pulping stability

Pending Publication Date: 2021-12-31
胜利油田东方鹏达非金属材料制品有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Huang Xianbin et al [The role of water-based acrylic resin in water-in-oil drilling fluid, Drilling Fluid and Completion Fluid, 2017, 34(2): 26-32] proposed that asphalt-based fluid loss reducers have low cohesion and exhibit resistance to compression and stretching. Characterized by low strength and poor solvent resistance

Method used

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  • Method for degrading and separating glass fiber reinforced composite material waste and preparing sulfonated asphalt by using glass fiber reinforced composite material waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Degradation of glass fiber reinforced epoxy resin composite material and preparation of modified sulfonated asphalt.

[0018] Put 100g of glass fiber reinforced epoxy resin composite material into a jar filled with 300g of concentrated sulfuric acid, swell and degrade after soaking for 24 hours, filter out the glass fibers, and obtain 320g of sulfuric acid resin degradation solution for the preparation of sulfonated asphalt fluid loss control Add 100mL of white oil to a 300mL three-necked bottle, add 30g of petroleum pitch under continuous stirring, and gradually add 12g of concentrated sulfuric acid to degrade the resin solution after it is completely dissolved, gradually add 3g of sulfur trioxide dropwise, heat in a water bath, and the temperature in the bottle Rise to 85°C, maintain 85±2°C for 2 hours, then lower to room temperature, slowly add the reaction solution into water, stir evenly, then add n-butyl acetate and stir evenly, let stand to separate the ...

Embodiment 2

[0019] Example 2 Degradation of glass fiber reinforced phenolic resin composite material and preparation of modified sulfonated asphalt.

[0020] Put 100g of glass fiber reinforced phenolic resin composite material into a jar filled with 300g of concentrated sulfuric acid, swell and degrade after soaking for 24 hours, filter out the glass fiber, and obtain 320g of sulfuric acid resin degradation solution for the preparation of sulfonated asphalt fluid loss control agent : Add 100mL white oil (white oil distilled in Example 1, after drying) in a 300mL three-necked bottle, add 30g petroleum pitch under constant stirring, after it is completely dissolved, gradually add 12g concentrated sulfuric acid to degrade the resin solution, gradually drop Add 3 grams of sulfur trioxide, heat in a water bath, the temperature in the bottle rises to 85 ° C, maintain 85 ± 2 ° C for 2 hours, then drop to room temperature, slowly add the reaction solution into water, stir evenly, then add the wate...

Embodiment 3

[0021] Example 3 Degradation of glass fiber reinforced unsaturated polyester composite material and preparation of modified sulfonated asphalt.

[0022] Put 100g of glass fiber reinforced unsaturated resin composite material into a jar with 300g of concentrated sulfuric acid, swell and degrade after soaking for 24 hours, filter out the glass fiber, and obtain 320g of sulfuric acid resin degradation solution for the preparation of sulfonated asphalt fluid loss control Add 100mL of white oil to a 300mL three-necked bottle, add 30g of petroleum pitch under continuous stirring, and gradually add 12g of concentrated sulfuric acid to degrade the resin solution after it is completely dissolved, gradually add 3g of sulfur trioxide dropwise, heat in a water bath, and the temperature in the bottle Rise to 85°C, maintain 85±2°C for 2 hours, then lower to room temperature, slowly add the reaction solution into water, stir evenly, then add n-butanol and stir evenly, let stand to separate th...

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Abstract

The invention relates to the field of recycling of glass fiber reinforced composite material waste (GFRP) and preparation of a drilling fluid filtrate reducer, in particular to a method for degrading and separating glass fiber reinforced composite material waste and preparing sulfonated asphalt by using the glass fiber reinforced composite material waste. The preparation method comprises the following steps: reacting GFRP with concentrated sulfuric acid under normal temperature and normal pressure conditions to generate an oxonium salt ionic liquid polymer, filtering and separating out glass fibers, and preparing sulfonated asphalt by taking a matrix resin degradation liquid as a sulfonating reagent and a modifying reagent. Excessive sulfuric acid can reduce the sulfonation cost, and an ionized polymer can improve the stability, temperature resistance and salt tolerance of a drilling fluid mud system, and has a better bonding or compatibilizing effect on the surface and interface of a modified material. The method has obvious economic benefits, realizes regeneration of high-energy-consumption glass fibers in the GFRP wastes and preparation of low-cost and high-efficiency sulfonated asphalt under the conditions of normal temperature and normal pressure, can promote resource recycling, and realizes unification of environmental benefits and economic benefits.

Description

technical field [0001] The invention relates to the field of waste degradation and utilization of glass fiber reinforced composite material and preparation of fluid loss reducer for drilling fluid; specifically, concentrated sulfuric acid and epoxy resin, phenolic resin or unsaturated polyester molecules are used under normal temperature and pressure conditions. Oxygen-containing functional groups generate ionic liquid oxonium salt or form benzenesulfonic acid structure mechanism with benzene ring, so that the ionized polymer resin is dissolved in concentrated sulfuric acid to regenerate glass fiber, and the polymer resin degradation solution is used as a sulfonating agent and improved It can react with asphalt to prepare sulfonated asphalt, which is used as a treatment agent for drilling fluid in oil exploration and development. Background technique [0002] Glass fiber reinforced composite materials have the characteristics of low density, high specific strength and specif...

Claims

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Application Information

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IPC IPC(8): C08J11/16C08K7/14C10C3/02C09K8/035C08L63/00C08L61/06C08L67/06
CPCC08J11/16C08K7/14C10C3/023C09K8/035C08J2363/00C08J2361/06C08J2367/06Y02W30/62
Inventor 赵剑英岳靖宇苑凤军于冰宇邵光国成磊磊苏传祥杨乃涛郇恒建于强强高子凤
Owner 胜利油田东方鹏达非金属材料制品有限公司
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