Geotextile processing aid, preparation method and application

Abstract

The invention discloses a geotextile processing aid, a preparation method and application, and the geotextile processing aid comprises the following components in percentage by mass: 15-75% of a cohesion bonding enhancer, 20-80% of a smoothing agent, 1-10% of a clearing agent, 1-8% of an oil film enhancer and 1-6% of an antistatic agent. According to the invention, the processed geotextile is high in strength and lasting in barrier effect, has very strong adsorption capacity to pollutants, is excellent in permeable effect, and provides technical support for soil pollution management and control.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fine chemicals, in particular to a geotextile processing aid, a preparation method and application. BACKGROUND

[0002] The soil ecological environment protection situation in China is grim, and the historical land pollution problems and the emerging new soil environmental pollution problems need to be solved urgently. Sustainable risk control is the core method to promote soil pollution prevention and control. The measures for pollution soil risk control include surface blocking of the contaminated land block, so as to reduce or eliminate the risk of pollutants to human health and the environment. The geotextile, which has the functions of anti-seepage, reinforcement and isolation, is crucial to the control effect, and therefore the preparation of the fiber oiling agent, which is an important factor for improving the quality in the processing process, has high requirements.

[0003] The existing processing aid mainly uses natural oil ester, polyether, fatty alcohol ether and other surfactants. The polyester filament geotextile produced by the processing aid has the defects of insufficient permeability and adsorption capacity for soil pollutants and insufficient strength, and cannot meet the risk control requirements. Therefore, developing high-performance composite polyester spinning oiling agent is an important technical scheme to promote soil pollution treatment. SUMMARY

[0004] The application aims to provide a geotextile processing aid, a preparation method and application, so that the processed geotextile has high strength, durable blocking effect, strong adsorption capacity for pollutants and excellent water permeability, and provides technical support for soil pollution control.

[0005] In order to solve the above technical problems, the application adopts the following specific scheme: a geotextile processing aid, by mass percentage, comprises 15-75% of a cohesive adhesion enhancer, 20-80% of a smoothing agent, 1-10% of a detergent, 1-8% of an oil film enhancer and 1-6% of an antistatic agent; the cohesive adhesion enhancer is a sulfite fatty alcohol fatty acid ester, the smoothing agent is a fatty acid polyether ester, the detergent is a carboxylate, the oil film enhancer is an organic polyamine, and the antistatic agent is an organic phosphate.

[0006] Preferably, the sulfite of the sulfite fatty alcohol fatty acid ester is one of sodium bisulfite, potassium bisulfite and calcium bisulfite; the fatty alcohol is a monohydric aldehyde, the carbon number of the fatty alcohol is C5-C22, the fatty acid is a monobasic acid, and the carbon number of the fatty acid is C5-C20.

[0007] Preferably, the fatty acid of the fatty acid polyether ester is a monobasic acid, and the carbon number of the fatty acid is C5-C20; the polyether is a copolymer of ethylene oxide and propylene oxide, and the molar mass ratio is (2-9):(4-15).

[0008] Preferably, the carboxylate is one of sodium carboxylate, calcium carboxylate, magnesium carboxylate.

[0009] Preferably, the organic polyamine is a diamine with a carbon number of C4-C20.

[0010] Preferably, the organic phosphate is one of sodium phenate ether phosphate, potassium phenate ether phosphate, sodium alcohol ether phosphate, potassium alcohol ether phosphate.

[0011] Preferably, it further comprises 1-8% of adsorption penetration enhancer by mass percentage, the adsorption penetration enhancer is phthalate; the phthalate is diol phthalate, the carbon number of the fatty alcohol is C4-C15.

[0012] Preferably, it comprises 30-60% of cohesive adhesion enhancer, 35-65% of smoothing agent, 3-6% of detergent, 2-4% of oil film enhancer, 1-3% of antistatic agent and 2-5% of adsorption penetration enhancer by mass percentage.

[0013] The application of the above-mentioned geotextile processing aid in the processing of soil pollution barrier material geotextile, in the processing steps of polyester fiber geotextile fiber stretching, weaving mesh cloth, coating and edge pressing, the geotextile processing aid is coated on the surface of the polyester fiber, and the content of the geotextile processing aid in the geotextile is 0.1-5%.

[0014] A preparation method of a geotextile processing aid, which synthesizes sulfite fatty alcohol fatty acid ester by using bisulfite, fatty alkenyl alcohol and fatty acid, and synthesizes polyether ester by using fatty acid, ethylene oxide and propylene oxide; the synthesized sulfite fatty alcohol fatty acid ester and polyether ester are mixed with detergent, oil film enhancer, adsorption penetration enhancer and antistatic agent to obtain the geotextile processing aid.

[0015] Preferably, the synthesis method of the sulfite fatty alcohol fatty acid ester is as follows: first, fatty alkenyl alcohol and fatty acid with a molar mass ratio of 1:(0.8-1.1) are used for reaction under atmospheric pressure at a reaction temperature of 130-230℃ for 6-12 hours under catalysis of tributyl phosphate with a mass percentage of 0.3-0.8% to obtain a polymer; then the polymer and bisulfite with a molar mass ratio of 1:(0.9-1.1) are used for reaction under atmospheric pressure at a reaction temperature of 25-75℃ for 1-4 hours to obtain the sulfite fatty alcohol fatty acid ester.

[0016] Preferably, the synthesis method of the fatty acid polyether ester is as follows: fatty acid, ethylene oxide and propylene oxide with a molar mass ratio of 1:(3-7):(4-8) are used for reaction under the conditions of a temperature of 100-160℃ and a pressure of 0.2-0.6Mpa to obtain the fatty acid polyether ester. Beneficial effects

[0017] The geotextile processing aid of the present application can wrap the fiber tows to form an oil film in the geotextile processing and spinning process, wherein the cohesion and adhesion enhancer and the smoothing agent containing long-chain fatty acid ester and high-molecular polyether can reduce the tow friction to impart excellent smoothness and cohesion to the fiber, improve the toughness and ductility of the geotextile, and thus strengthen the strength. The antistatic agent organic phosphate containing phosphate hydrophilic groups and alkyl hydrophobic groups on the surface of the tow can form a conductive film to effectively prevent static electricity from being generated and accumulated, eliminate static electricity, so that the fiber does not disperse and has good bundling. The oil film enhancer organic polyamine has a strong polarity and can form a tough protective film on the surface of the geotextile, thereby greatly improving the strength of the geotextile. The sulfur functional groups in the cohesion and adhesion enhancer have properties such as tackifying and decontamination, which are beneficial to the separation of pollutants in the soil. The detergent carboxylate has good dispersing and dissolving properties and can combine with pollutants, and through physical movement and chemical reaction, the pollutants are separated from the soil surface. The adsorption and penetration enhancer phthalate can increase the force of action with soil pollutants, facilitate adsorption and water permeation, and prevent the diffusion of pollutants. DETAILED DESCRIPTION

[0018] The geotextile processing aid, preparation method and application of the present application are described below through two examples:

[0019] Example 1

[0020] A geotextile processing aid, consisting of 47.5% component sodium sulfite octadecyl laurate, 45% component polyether laurate, 0.5% sodium carboxylate, 1% N,N-dioctylamine and 5% phthalic acid dihexanol ester, 1% alcohol ether phosphate potassium, by mass percent. The sodium sulfite octadecyl laurate therein is used as a cohesion and adhesion enhancer, the polyether laurate is used as a smoothing agent, the sodium carboxylate is used as a detergent, the N,N-dioctylamine is used as an oil film enhancer, the phthalic acid dihexanol ester is used as an adsorption and penetration enhancer, and the alcohol ether phosphate potassium is used as an antistatic agent.

[0021] The preparation method of the above-mentioned geotextile processing aid comprises the following steps:

[0022] (1) In a synthesis kettle, add oil alcohol and lauric acid with a molar mass ratio of 1:1, under normal pressure, the reaction temperature is 180℃, the reaction time is 8hr, and then the molar mass ratio of the polymer to sodium bisulfite is 1:1, under normal pressure, the reaction temperature is 50℃, the reaction time is 2hr, and the reaction of sodium sulfite octadecyl laurate is completed;

[0023] (2) In the synthesis kettle, add lauric acid, ethylene oxide and propylene oxide with a molar mass ratio of 1:5:5, the reaction temperature is 130℃, the reaction pressure is 0.35MPa, and the polymer molecular weight after the reaction is controlled to be 7000, and the lauric acid polyether ester reaction is completed;

[0024] (3) In the stirred kettle, the temperature is 25℃, and the metered octadecyl laurate sodium sulfite and polyether laurate, sodium carboxylate, N,N-dioctylamine, and dihexanol phthalate and alcohol ether potassium phosphate are sequentially added, and the soil cloth processing aid is obtained after stirring for 60min.

[0025] In the processing steps of fiber stretching, weaving mesh cloth, coating and edge pressing of the soil cloth processed by the soil cloth processing aid of the present embodiment, the soil cloth processing aid is coated on the surface of the polyester fiber, the oiling rate is 1.5%, the finished cloth tensile strength is not less than 50kN / m, and the soil pollutant barrier effect is not less than 95%.

[0026] Example 2

[0027] A soil cloth processing aid, consisting of 62.5% component potassium octadecyl laurate sulfite, 30% component polyether stearate, 0.8% potassium carboxylate, 1.5% N,N-dihexylamine and 4% dibutyl phthalate, and 1.2% alcohol ether potassium phosphate, by mass percentage. Among them, potassium octadecyl laurate sulfite is used as a cohesive adhesion enhancer, polyether stearate is used as a smoothing agent, potassium carboxylate is used as a detergent, N,N-dihexylamine is used as an oil film enhancer, dibutyl phthalate is used as an adsorption penetration enhancer, and alcohol ether potassium phosphate is used as an antistatic agent.

[0028] The preparation method of the above-mentioned soil cloth processing aid comprises the following steps:

[0029] (1) In the synthesis kettle, add oil alcohol and stearic acid with a molar mass ratio of 1:1, catalyzed by 0.8% phosphoric acid tributyl ester, the reaction temperature is 200℃ under normal pressure, the reaction time is 8hr, then the polymer is mixed with potassium bisulfite with a molar mass ratio of 1:1, the reaction temperature is 50℃ under normal pressure, and the reaction time is 3hr, to obtain potassium octadecyl laurate sulfite reaction end;

[0030] (2) In the synthesis kettle, add stearic acid, ethylene oxide and propylene oxide with a molar mass ratio of 1:5:5, the reaction temperature is 150℃, the reaction pressure is 0.35MPa, and the polymer molecular weight after the reaction is controlled to be 8000, and the stearic acid polyether ester reaction is completed;

[0031] (3) in the stirred tank, the temperature is 25 ℃, the metering of sodium sulfite octadecyl stearate and polyether stearate, potassium carboxylate, N, N-dihexylamine and dibutyl phthalate and alcohol ether phosphate potassium are added in turn, stirring for 60 min, the geotextile processing aid is obtained.

[0032] The geotextile processing aid of the embodiment is coated on the surface of the polyester fiber in the processing steps of fiber stretching, weaving mesh cloth, coating and edge pressing of the geotextile, the oiling rate is 1.2%, the tensile strength of the finished cloth is not less than 40 kN / m, and the soil pollutant blocking effect is not less than 90%.

Claims

1. A geotextile processing aid characterized by: The composition comprises 15-75% of the cohesion adhesion enhancer, 20-80% of the smoothing agent, 1-10% of the detergent, 1-8% of the oil film enhancer and 1-6% of the antistatic agent by mass percentage; the cohesion adhesion enhancer is a sulfite fatty alcohol fatty acid ester, the smoothing agent is a fatty acid polyether ester, the detergent is a carboxylate, the oil film enhancer is an organic polyamine, and the antistatic agent is an organic phosphate.

2. The geotextile processing aid of claim 1, wherein: The sulfite of the sulfite fatty alcohol fatty acid ester is one of sodium bisulfite, potassium bisulfite and calcium bisulfite; the fatty alcohol is a monohydric alkenyl alcohol, the carbon number of the fatty alcohol is C5-C22, the fatty acid is a monohydric acid, and the carbon number of the fatty acid is C5-C20.

3. The geotextile processing aid of claim 1, wherein: The fatty acid of the fatty acid polyether ester is a monohydric acid, and the carbon number of the fatty acid is C5-C20; the polyether is a copolymer of ethylene oxide and propylene oxide, and the molar mass ratio is (2-9):(4-15).

4. The geotextile processing aid of claim 1, wherein: The carboxylate is one of sodium carboxylate, calcium carboxylate and magnesium carboxylate.

5. The geotextile processing aid of claim 1, wherein: The organic polyamine is a diamine, and the carbon number is C4-C20.

6. The geotextile processing aid of claim 1, wherein: The organic phosphate is one of phenolic ether phosphate sodium, phenolic ether phosphate potassium, alcohol ether phosphate sodium and alcohol ether phosphate potassium.

7. The geotextile processing aid of claim 1, wherein: The composition further comprises 1-8% of the adsorption penetration enhancer by mass percentage, and the adsorption penetration enhancer is an o-phthalic acid ester; the o-phthalic acid ester is a diol o-phthalic acid ester, and the carbon number of the fatty alcohol is C4-C15.

8. The geotextile process aid of claim 7, wherein: The composition comprises 30-60% of the cohesion adhesion enhancer, 35-65% of the smoothing agent, 3-6% of the detergent, 2-4% of the oil film enhancer, 1-3% of the antistatic agent and 2-5% of the adsorption penetration enhancer by mass percentage.

9. Use of any of the geotextile processing aids of claims 1-8 in the processing of geotextiles for soil pollution barrier materials, characterized in that: In the processing steps of fiber stretching, weaving, coating and edge pressing of the polyester fiber geotextile, the geotextile processing aid is coated on the surface of the polyester fiber, and the content of the geotextile processing aid in the geotextile is 0.1-5%.

10. A method for preparing a geotextile processing aid, characterized by: The sulfite fatty alcohol fatty acid ester is synthesized by using bisulfite, fatty alkenyl alcohol and fatty acid, and the fatty acid polyether ester is synthesized by using fatty acid, ethylene oxide and propylene oxide; the geotextile processing aid is prepared by mixing the synthesized sulfite fatty alcohol fatty acid ester and fatty acid polyether ester with the detergent, the oil film enhancer, the adsorption penetration enhancer and the antistatic agent.

11. The method for preparing a textile processing aid as described in claim 9, characterized in that: The synthesis method of the sulfite fatty alcohol fatty acid ester is as follows: first, fatty alkenyl alcohol and fatty acid with a molar mass ratio of 1:(0.8-1.1) are used for reaction under normal pressure at a reaction temperature of 130-230°C for 6-12 hours in the presence of tributyl phosphate with a mass percentage of 0.3-0.8% as a catalyst to obtain a polymer; then, the polymer and bisulfite with a molar mass ratio of 1:(0.9-1.1) are used for reaction under normal pressure at a reaction temperature of 25-75°C for 1-4 hours to obtain the sulfite fatty alcohol fatty acid ester.

12. The method for preparing a textile processing aid as described in claim 9, characterized in that: The synthesis method of the fatty acid polyether ester is as follows: fatty acid, ethylene oxide and propylene oxide with a molar mass ratio of 1:(3-7):(4-8) are used for reaction under the conditions of a temperature of 100-160°C and a pressure of 0.2-0.6 Mpa to obtain the fatty acid polyether ester.