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A kind of water-soluble polymer material and its preparation method and application

A water-soluble polymer, polyethylene glycol technology, applied in the field of functional materials, can solve problems such as gaps in the research of water-soluble rubber, and achieve the effects of excellent water solubility, shortened construction time, good elasticity and tightness

Active Publication Date: 2022-02-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic research on this field started relatively late. Although some achievements have been made in soluble fracturing balls, the research on water-soluble rubber is still blank.

Method used

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  • A kind of water-soluble polymer material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1 prepares water-soluble polymer material

[0022] The steps are as follows: 200 g of polyethylene glycol, 20 g of polytetrahydrofuran diol and polypropylene oxide diol mixed in a mass ratio of 1:1, 3 g of trimethylolpropane, Put 2g of squid ink melanin, a biomass enhancer, in a 500mL three-neck flask, dehydrate at 100°C for 1 hour; cool to 60°C, add 172.9g of isophorone diisocyanate, and control the reaction temperature at 75°C for 2.5 h; After the reaction is completed, vacuumize and debubble for 30 minutes to prepare the NCO functional group-terminated prepolymer.

[0023] Take 100g of the above-prepared polyurethane prepolymer, put it in a 200mL beaker, add 25.47g of chain extender N-methyldiethanolamine, stir quickly and evenly, pour the mixture into a mold preheated at 100°C, and wait for When the mixture is gel-like (not flowing or sticky), close the mold, put the mold on a flat vulcanizing machine for molding vulcanization, and the vulcanization cond...

Embodiment 2

[0025] Embodiment 2 prepares water-soluble polymer material

[0026] The steps are as follows: 200g of polyethylene glycol, 30g of polytetrahydrofuran diol and polypropylene oxide diol mixed in a mass ratio of 1:1, 30g of trimethylolpropane, Put 2g of the biomass enhancer squid pigment in a 500mL three-neck flask, dehydrate at 100°C for 1h, cool to 60°C, add 182.8g of isophorone diisocyanate, and control the reaction temperature at 75°C for 2.5h , after the reaction is completed, vacuumize and debubble for 30 minutes to prepare the NCO functional group-terminated prepolymer.

[0027] Take 120g of the above-prepared polyurethane prepolymer in a 200mL beaker, add 30.57g of N-methyldiethanolamine chain extender to it, stir quickly and evenly, and pour the mixture into a preheated mold at 100°C. When it does not flow or stick to hands (gel-like), close the mold, place the mold on a flat vulcanizer for molding vulcanization, and the vulcanization condition is 10MPa×100℃×1h.

[00...

Embodiment 3

[0029] Embodiment 3 prepares water-soluble polymer material

[0030] The steps are as follows: 200g of polyethylene glycol, 40g of polytetrahydrofuran diol and polypropylene oxide diol mixed in a mass ratio of 1:1, 3g of trimethylolpropane, Put 2g of the biomass enhancer squid pigment in a 500mL three-neck flask, dehydrate at 100°C for 1h, cool to 60°C, add 192.6g of isophorone diisocyanate, and control the reaction temperature at 75°C for 2.5h , after the reaction is completed, vacuumize and debubble for 30 minutes to prepare the NCO functional group-terminated prepolymer.

[0031] Take 120g of the above-prepared polyurethane prepolymer in a 200mL beaker, add 30.57g of N-methyldiethanolamine chain extender to it, stir quickly and evenly, and pour the mixture into a preheated mold at 100°C. When it does not flow or stick to hands (gel-like), close the mold, place the mold on a flat vulcanizer for molding vulcanization, and the vulcanization condition is 10MPa×100℃×1h.

[003...

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Abstract

The invention discloses a water-soluble polymer material, which is made of the following raw materials: 200 parts of polyethylene glycol, 20-50 parts of hydroxyl-terminated polyether mixed diol, 3-7 parts of trimethylolpropane, two 154-203 parts of isocyanate, 2-5 parts of biomass melanin, 25-31 parts of N-methyldiethanolamine; mixed diol of hydroxyl-terminated polyether is composed of polytetrahydrofuran diol and polypropylene oxide diol at 1:0.9~ 1.1 Mixed. During preparation, polyethylene glycol, hydroxyl-terminated polyether mixed glycol, trimethylolpropane and biomass melanin are mixed, dehydrated, added with diisocyanate, reacted, added with N-methyldiethanolamine, molded and vulcanized to obtain . The water-soluble polymer material of the present invention has high strength, not only has good elasticity and sealing performance, but also has excellent water solubility, and can be widely used in downhole tools, such as bridge plugs, packers, etc. Technical features that do not require salvage.

Description

technical field [0001] The invention relates to a water-soluble polymer material and its preparation method, as well as its application in the preparation of sealing parts, belonging to the technical field of functional materials. Background technique [0002] After the traditional seals used in the fracturing process are completed, the packer seals still need to be pulled out from the oil well, and often the seals are broken during the operation, which makes it difficult to pull out and increases the operating cost of the oil production process . At present, the traditional materials of oil production tools are gradually developing from drillable to soluble. While the bridge plug can be quickly dissolved in water, it is required that the matching packer seals should also be quickly dissolved in water. [0003] At present, the downhole tools of soluble composite materials for fracturing in foreign countries have been relatively mature, and various tools such as soluble frac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/10C08G18/32C08G18/48C08L75/08
CPCC08G18/6688C08G18/4808C08G18/4854C08G18/4833C08G18/4825C08G18/3206C08G18/10C08L75/08
Inventor 张全胜李再峰吕玮李玉宝李明张峰程凯李娜董建国
Owner CHINA PETROLEUM & CHEM CORP
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