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Preparation method of polyacrylic acid oil-absorbing resin and product thereof

A technology of oil-absorbing resin and polyacrylic acid, which is applied in the field of oil-absorbing resin, can solve the problems of reduced oil absorption performance, slow adsorption efficiency, and low oil absorption ratio, and achieve good oil-water selectivity, controllable and adjustable structure, and improved separation efficiency.

Pending Publication Date: 2021-11-09
四川长晏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic materials are widely used in the field of adsorption due to their well-developed pore structure and large specific surface area. However, most of these materials are in the form of powders. When used to remove a certain component in a liquid system, it is not conducive to recovery and the adsorption efficiency is slow. ; Polymer oil-absorbing materials are divided into natural polymer oil-absorbing materials and synthetic polymer oil-absorbing materials. Polymer oil-absorbing materials mainly use the van der Waals force generated between the lipophilic segment on the molecule and the oil molecule to produce oil-absorbing properties. The principle is the same as The water absorption mechanism of superabsorbent resins is similar. At present, polymer oil-absorbing materials have problems such as low oil absorption ratio, poor oil retention performance, and sharp decline in oil absorption performance after being irradiated.

Method used

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  • Preparation method of polyacrylic acid oil-absorbing resin and product thereof
  • Preparation method of polyacrylic acid oil-absorbing resin and product thereof
  • Preparation method of polyacrylic acid oil-absorbing resin and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Accurately measure 5 mL of trimethylolpropane, then add 1 mL of concentrated sulfuric acid (mass fraction of concentrated sulfuric acid ≥ 70%), and add 20 mL of acrylic acid when the system is cooled to room temperature after exothermic heat is completed. After heating to carry out reflux reaction for 3 hours, wash with saturated sodium carbonate solution to remove concentrated sulfuric acid, trimethylolpropane and acrylic acid, and dry with anhydrous potassium carbonate to obtain a resin skeleton core precursor.

[0041] (2) Dissolve 200mL of acrylic acid in 50mL of ultrapure water, add 10mL of the precursor synthesized in the first step, add dodecylbenzenesulfonic acid as an emulsifier, and fully stir with a spiral stirrer. After the system turns milky white, add 0.1g of oil-soluble initiator azobisisobutyronitrile, heat up to 70°C and stir for inverse emulsion polymerization for 60 minutes to obtain a polyacrylic acid resin skeleton, and use gel chromatography to ...

Embodiment 2

[0044](1) The original soil of attapulgite is roasted at 350°C for 4 hours, crushed to pass through a 100-mesh sieve, and soaked in 0.05mol / L sulfuric acid solution for 20 minutes (the mass-volume ratio of attapulgite to acidic solution is 10g: 30mL), Then take it out and directly transfer it to 1.5mol / L sodium hydroxide solution for soaking for 10 minutes (the mass volume ratio of attapulgite and acidic solution is 10g:30mL), wash with water until neutral, and dry at 50°C to obtain modified attapulgite.

[0045] (2) Accurately measure 5mL of trimethylolpropane, then add 1mL of concentrated sulfuric acid, and add 20mL of acrylic acid when the system is cooled to room temperature after exothermic. After heating to carry out reflux reaction for 3 hours, wash with saturated sodium carbonate solution to remove concentrated sulfuric acid, trimethylolpropane and acrylic acid, and dry with anhydrous potassium carbonate to obtain a resin skeleton core precursor.

[0046] (3) Dissolve ...

Embodiment 3

[0049] Same as Example 2, the difference is that the alkali modification process of attapulgite is omitted, and the attapulgite after roasting and acid modification is used as the loading material.

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Abstract

The invention relates to the technical field of oil-absorbing resin, in particular to a preparation method of polyacrylic acid oil-absorbing resin and a product of the polyacrylic acid oil-absorbing resin. The preparation method comprises the following steps: carrying out condensation reaction on trimethylolpropane and acrylic acid under a strong acid condition to obtain a resin skeleton precursor; and further performing olefin addition polymerization reaction on the resin skeleton precursor and acrylic acid to obtain the polyacrylic acid oil-absorbing resin. The polyacrylic acid oil-absorbing resin provided by the invention has a skeleton structure, is convenient to separate after adsorption, and has excellent acid and alkali resistance and irradiation resistance.

Description

technical field [0001] The invention relates to the technical field of oil-absorbing resins, in particular to a preparation method of polyacrylic acid oil-absorbing resins and products thereof. Background technique [0002] With the widespread promotion of offshore oil resource exploitation, oil spill accidents have become the most typical environmental problems in the current mining process, and oil spill accidents will cause great harm to the ecological environment, especially the aquatic environment. Therefore, efficient handling of such accidents is one of the key contents of current research. Adsorption method is a method that can deeply purify polluted water bodies. It has been widely promoted because it is more efficient than microbial methods and less polluting to the environment than chemical methods. The oil-absorbing material used in the adsorption method has become a research hotspot in recent years. [0003] The existing main oil-absorbing materials are divide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/14C08F2/44C08K9/00C08K9/02C08K3/34C08K5/5425B01D17/022
CPCC08F220/06C08F2/44C08K9/00C08K9/02C08K3/346C08K5/5425B01D17/0202C08F222/103
Inventor 晏敏皓朱杉曹世权宋平王昆州
Owner 四川长晏科技有限公司
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