Polyethylene for rotational moulding and preparation method thereof

A technology of polyethylene and polyethylene resin, which is applied in the field of polyethylene processing, can solve problems such as foaming process and drop performance detection not mentioned, and achieve excellent drop performance, enhanced impact resistance and drop resistance, and good plasticization effect of effect

Inactive Publication Date: 2017-05-24
FOSHAN RUIJIAN SPORTS EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent does not mention the foaming process and drop performance testing

Method used

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  • Polyethylene for rotational moulding and preparation method thereof
  • Polyethylene for rotational moulding and preparation method thereof
  • Polyethylene for rotational moulding and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0033] Examples 1 to 5 are specific implementations of polyethylene for rotomoulding and its preparation method of the present invention. Wherein embodiment 1 is the best implementation mode.

Embodiment 1~5

[0035] Examples 1-5 can obtain polyethylene powders with different degrees of branching, terminal methyl content, molecular weight, melt mass flow rate and density by changing the addition amount of hexene-1 and the control of polymerization reaction temperature and pressure. The polyethylene for rotomolding of the present invention is obtained by the above-mentioned preparation method with the preferred auxiliary agent formula. The structural performance characteristics and additive system of special structure polyethylene powder are shown in Table 1.

[0036] Table 1 Example 1~5 polyethylene structure performance characteristics and additive system

[0037]

[0038] These 5 samples above 1~5# are prepared into polyethylene for rotational molding by the method of the present invention, adopt following steps:

[0039] 1) Polyethylene resin, polyphenol hindered phenolic antioxidant, phosphite antioxidant, ultraviolet absorber, azodicarbonamide, calcium stearate and conducti...

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Abstract

The invention belongs to the technical field of polyethylene processing, and particularly relates to a polyethylene for rotational moulding and a preparation method thereof. The polyethylene is prepared from 100 parts of polyethylene resin, 0.03-0.06 part of polyphenols suffocate hydroxybenzene antioxidant, 0.03-0.06 part of phosphite antioxidant, 0.1-0.3 part of ultraviolet absorbent, 1-5 parts of azodicarbonamide, 0.5-1.5 parts of calcium stearate and 1-3 parts of conductive carbon black. The oil tank made of the polyethylene for rotational moulding has the advantages of being uniform in wall thickness, good in strength, excellent in impact resistance, outstanding in anti-falling performance, and applicable to long term use in unfavorable outdoor environments such as severe coldness, severe hotness, long period shaking and vibration.

Description

technical field [0001] The invention discloses polyethylene for rotational molding and a preparation method thereof, belonging to the technical field of polyethylene processing. Background technique [0002] Plastic automotive fuel tanks need to have certain specific properties, such as being strong and having high impact strength, so that the fuel tank will not be damaged and leaked when it encounters severe impacts during use. Automotive fuel tanks also need to have good low-temperature / high-temperature shock resistance, so that they can be used safely in extreme environments. Automotive fuel tanks need to have excellent resistance to environmental stress cracking, have no side effects when containing fuel, and are not easy to crack. Automobile fuel tanks are generally produced by blow molding and rotational molding technology. The rotational molding fuel tank can be integrally formed at one time, with high production efficiency. The product is only affected by heating an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/02C08K5/134C08K5/526C08K5/098C08K3/04C08J9/10
CPCC08K13/02C08J9/103C08J2323/06C08K3/04C08K5/098C08K5/1345C08K5/526C08K2201/001C08L2201/08C08L23/06
Inventor 邹明瑞
Owner FOSHAN RUIJIAN SPORTS EQUIP CO LTD
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