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Degradable and environment-friendly anti-seepage film for oil field and preparation method of degradable environment-friendly anti-seepage film

An anti-seepage membrane and environmental protection technology, applied in the field of materials, can solve the problems that microorganisms are difficult to decompose organic matter, and achieve the effect of non-toxic and harmless soil, high technical standards for environmental requirements, and simple process

Inactive Publication Date: 2016-10-12
新疆加福萨斯石油设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corrosion resistance and anti-bacteria are a major advantage of plastic impermeable membranes, but they become a headache for scientists when they stay underground for a long time. In the absence of air and light, microorganisms are difficult to decompose organic matter, and plastic waste is buried in landfills. It takes 200-300 years to decompose completely

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Take 50 parts of polylactic acid, 0 parts of polyadipate / butylene terephthalate, 1 part of plant fiber, 1 part of glycerin, and 0 parts of montmorillonite;

[0023] (2) Add the raw materials in step (1) into the high-speed mixer in the order of powder, liquid and granular materials, and mix for 10 minutes until uniform;

[0024] (3) Add the raw materials mixed in step (2) into the hopper of the twin-screw extruder, set the operating temperature of each zone of the twin-screw extruder to 100°C, and obtain the modified resin after strand cutting;

[0025] (4) Put the modified resin in step (3) into the dryer and fully dry until the water content is ≤500ppm;

[0026] (5) Put the modified resin dried in step (4) into the casting sheet machine, and the operating temperature of each temperature zone of the casting sheet machine is 100°C, and finally obtain a degradable and environmentally friendly anti-seepage film for oil fields .

Embodiment 2

[0028] (1) Take 60 parts of polylactic acid, 30 parts of polybutylene adipate / terephthalate, 5 parts of plant fiber, 5 parts of glycerin, 10 parts of calcium carbonate and talcum powder;

[0029] (2) Add the raw materials in step (1) into the high-speed mixer in the order of powder, liquid and granular materials, and mix for 15 minutes until uniform;

[0030] (3) Add the raw materials mixed in step (2) into the hopper of the twin-screw extruder, set the operating temperature of each zone of the twin-screw extruder to 150°C, and obtain the modified resin after strand cutting;

[0031] (4) Put the modified resin in step (3) into the dryer and fully dry until the water content is ≤500ppm;

[0032] (5) Put the modified resin dried in step (4) into the cast sheet machine, and the operating temperature of each temperature zone of the cast sheet machine is 150°C, and finally obtain a degradable and environmentally friendly anti-seepage film for oil fields .

Embodiment 3

[0034] (1) Take 70 parts of polylactic acid, 50 parts of polyadipate / butylene terephthalate, 10 parts of plant fiber, 10 parts of epoxy soybean oil, and 30 parts of montmorillonite;

[0035] (2) Add the raw materials in step (1) into the high-speed mixer in the order of powder, liquid and granular materials, and mix for 20 minutes until uniform;

[0036] (3) Add the raw materials mixed in step (2) into the hopper of the twin-screw extruder, set the operating temperature of each zone of the twin-screw extruder to 180°C, and obtain the modified resin after strand cutting;

[0037] (4) Put the modified resin in step (3) into the dryer and fully dry until the water content is ≤500ppm;

[0038] (5) Put the modified resin dried in step (4) into the casting sheet machine, and the operating temperature of each temperature zone of the casting sheet machine is 180°C, and finally obtain a degradable and environmentally friendly anti-seepage film for oil fields .

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Abstract

The invention discloses a degradable and environment-friendly anti-seepage film for an oil field and a preparation method of the degradable and environment-friendly anti-seepage film. The degradable and environment-friendly anti-seepage film is prepared from the components by weight as follows: polylactic acid, poly (butyleneadipate-co-terephthalate), plant fibers, glycerin or epoxidized soybean oil and inorganic filler. The preparation method comprises specific preparation steps as follows: weighing the polylactic acid, poly (butyleneadipate-co-terephthalate), the plant fibers, glycerin or the epoxidized soybean oil and the inorganic filler; adding the raw materials to a high-speed mixer for uniform mixing; adding the mixture to a hopper of a twin-screw extruder, and obtaining modified resin after brace granulating; placing the modified resin in a drying machine for full drying, and putting the dried modified resin in a cast sheet machine to obtain the degradable, environment-friendly and anti-seepage film for the oil field. The film can be completely biodegraded in the nature after used, degradation products meet EN13432 standards for compostable and are non-toxic and harmless to soil, and the technical standard for environment requirements is high. The preparation method is simple in process, easy to control and suitable for industrial mass production.

Description

technical field [0001] The invention relates to the field of materials, in particular to a degradable and environmentally friendly anti-seepage film for oil fields and a preparation method thereof. Background technique [0002] Most of the oil field drilling construction areas are distributed in deserts and Gobi, and the ecological environment is fragile. In addition, the implementation of the "two new environmental protection laws" has put forward higher requirements for safety and environmental protection. In accordance with the requirements of the new standard, higher requirements are put forward for the sewage tank for the storage and treatment of drilling waste fluid and cuttings. Even in the uninhabited desert hinterland, all drilling indicators such as construction progress and production timeliness are all "give way" to environmental protection. With the continuous deepening of the understanding of environmental problems, the only way to solve the "white pollution" c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L67/02C08L97/02C08K5/053C08K3/34C08K3/26C08K5/1515
CPCC08L67/04C08J5/18C08J2367/04C08J2497/02C08L2201/06C08L2203/16C08L2205/02C08L2205/03C08L2205/16C08L97/02C08K5/053C08K3/346C08L67/02C08K3/34C08K2003/265C08K5/1515
Inventor 雷理
Owner 新疆加福萨斯石油设备有限公司
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