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Antistatic polyethylene composition for fuel tanks, and preparation method thereof

A polyethylene and antistatic technology, which is applied in the field of antistatic polyethylene oil tank composition and its preparation, can solve the problems of reducing the mechanical properties and processing properties of materials, and achieve the effect of excellent mechanical properties and maintaining mechanical properties

Inactive Publication Date: 2017-04-05
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasing the amount of carbon black makes the material conductive, but adding a large amount of carbon black will reduce the mechanical properties and processing properties of the material

Method used

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  • Antistatic polyethylene composition for fuel tanks, and preparation method thereof
  • Antistatic polyethylene composition for fuel tanks, and preparation method thereof
  • Antistatic polyethylene composition for fuel tanks, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Polyethylene 1 resin (MFR=4.0g / 10mim, density 0.950g / cm 3 )

[0039] Polyethylene 2 resin (MFR=4.7g / 10mim, density 0.931g / cm 3 )

[0040] Di(undecyl)phthalate

[0041] Clay (1000 mesh)

[0042] Carbon black (DBP absorption value 400ml / 100g particle size 33nm).

[0043] The concrete preparation method of polyethylene composition for fuel tank of the present invention is as follows:

[0044] (1) Blending carbon black, di(undecyl) phthalate and acetone, acetone acts as a diluent to increase the dispersion of carbon black in di(undecyl) phthalate. Dry in a vacuum oven at 60°C for 8 hours.

[0045] (2) The raw material obtained in step (1) and polyethylene 1 are melt-blended in an internal mixer.

[0046] (3) Put the raw materials prepared in step (2) into a twin-screw extruder for melting and granulation.

[0047] (4) Add pottery clay to polyethylene 2, mix in a high-speed mixer for 3 minutes, then melt and granulate in a twin-screw extruder.

[0048] (5) Mixing th...

Embodiment 2

[0050] Polyethylene 1 resin (MFR=5.0g / 10mim, density 0.945g / cm 3 )

[0051] Polyethylene 2 resin (MFR=5.0g / 10mim, density 0.936g / cm 3 )

[0052] Di(undecyl)phthalate

[0053] Clay (1500 mesh)

[0054] Carbon black (DBP absorption value 400ml / 100g particle size 33nm).

[0055] The concrete preparation method of polyethylene composition for fuel tank of the present invention is as follows:

[0056] (1) Blending carbon black, di(undecyl) phthalate and acetone, acetone acts as a diluent to increase the dispersion of carbon black in di(undecyl) phthalate. Dry in a vacuum oven at 40°C for 10 hours.

[0057] (2) The raw material obtained in step (1) and polyethylene 1 are melt-blended in an internal mixer.

[0058] (3) Put the raw materials prepared in step (2) into a twin-screw extruder for melting and granulation.

[0059] (4) Add pottery clay to polyethylene 2, mix in a high-speed mixer for 5 minutes, then melt and granulate in a twin-screw extruder.

[0060] (5) Mixing t...

Embodiment 3

[0062] Polyethylene 1 resin (MFR=7.0g / 10mim, density 0.945g / cm 3 )

[0063] Polyethylene 2 resin (MFR=4.0g / 10mim, density 0.933g / cm 3 )

[0064] Di(undecyl)phthalate

[0065] Clay (2000 mesh)

[0066] Carbon black (DBP absorption value 400ml / 100g particle size 33nm).

[0067] The concrete preparation method of polyethylene composition for fuel tank of the present invention is as follows:

[0068] (1) Blending carbon black, di(undecyl) phthalate and acetone, acetone acts as a diluent to increase the dispersion of carbon black in di(undecyl) phthalate. Dry in a vacuum oven at 80°C for 6 hours.

[0069] (2) The raw material obtained in step (1) and polyethylene 1 are melt-blended in an internal mixer.

[0070] (3) Put the raw materials prepared in step (2) into a twin-screw extruder for melting and granulation.

[0071] (4) Add pottery clay to polyethylene 2, mix in a high-speed mixer for 2 minutes, then melt and granulate in a twin-screw extruder.

[0072] (5) Mixing the ...

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Abstract

The invention relates to an antistatic polyethylene composition for fuel tanks, and a preparation method thereof. The composition comprises, by weight, 40-60 parts of polyethylene 1 resin, 40-60 parts of polyethylene 2 resin, 6.0-10.0 parts of di(undecyl) phthalate, 0.5-3 parts of potter's clay and 5-10 parts of carbon black. A small amount of the carbon black is added, so the composition is conductive, and well keeps the mechanical performances, and the composition has excellent mechanical performances, excellent processing performances and excellent conductive performance, and is suitable for hollow blow molding processing.

Description

technical field [0001] The invention relates to a polyethylene composition for an oil tank, in particular to an antistatic polyethylene oil tank composition and a preparation method thereof. Background technique [0002] There are usually two types of fuel tanks, metal fuel tanks and plastic fuel tanks. The manufacture of metal fuel tanks requires cutting, stamping, welding, painting and other processes, while plastic fuel tanks including accessories can be formed at one time, which has the advantages of simple process, high efficiency, short production cycle, and the cost can be reduced by 1 / 3. To replace metal fuel tanks, plastic fuel tanks need to have the properties of metal fuel tanks, such as: impact resistance, not easy to leak, flame retardant, anti-static, etc. [0003] One of the materials used to produce plastic fuel tanks is high-density polyethylene. HDPE used in the production of oil tanks generally requires a higher molecular weight to ensure better rigidity...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K5/12C08K3/34C08K3/04
CPCC08L23/06C08K2201/001C08K2201/003C08K2201/011C08L23/0815C08L2201/04C08L2205/02C08L2314/06C08K5/12C08K3/04C08K3/346
Inventor 徐素兰唐岩张超刘少成张广明王秀丽裴晓静胡军霍明
Owner CHINA PETROLEUM & CHEM CORP