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A kind of polyethylene material for rotational molding urea tank and preparation method thereof

A technology of rotational molding and polyethylene, which is applied in the field of polyethylene materials for rotational molding urea tanks and its preparation, can solve the problems of undisclosed inserts combined with temperature resistance, etc., and achieve good impact resistance and temperature resistance Good, good effect of alternating cold and heat resistance

Active Publication Date: 2017-07-18
ZHEJIANG ROTOUN PLASTIC TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the invention does not disclose how to solve the problem of combining with the insert and the problem of temperature resistance

Method used

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  • A kind of polyethylene material for rotational molding urea tank and preparation method thereof
  • A kind of polyethylene material for rotational molding urea tank and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Mix antioxidant 1010:antioxidant 168:zinc stearate=1:2:2 to form a processing aid, mix metallocene linear low density polyethylene 74.4Kg, polyisobutylene 10Kg, processing aid 0.6 After Kg mixing, the pigment is made into granules in a twin-screw granulator, the process parameters are temperature 200°C, rotation speed 600rpm, head pressure 0.5MPa.

[0033] Mix 85Kg of the prepared granules and 15Kg of ultra-low density polyethylene in a mixer evenly. The mixing process parameters are: rotating speed 5rpm, mixing time 10min.

[0034] The mixed granules are ground in a plastic pulverizer, the process parameters are feeding speed 25Kg / h, milling disc rotating speed 2000rpm, milling disc outlet temperature 50°C.

Embodiment 2

[0036] Mix antioxidant 1010: antioxidant 168: zinc stearate = 1:2:2 to form a processing aid, mix metallocene linear low-density polyethylene 92.8Kg, polyisobutylene 2Kg, and processing aid 0.2Kg After mixing, the pigment is manufactured into granules in a twin-screw granulator, and the process parameters are temperature 150° C., rotation speed 400 rpm, and head pressure 0.1 MPa.

[0037] Mix 95Kg of the prepared granules and 5Kg of ultra-low density polyethylene in a mixer evenly. The mixing process parameters are: rotating speed 30rpm, mixing time 3min.

[0038] Grind the mixed particles in a plastic mill with the process parameters of feeding speed 300Kg / h, milling disc rotation speed 4000rpm, milling disc outlet temperature 65°C.

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Abstract

The invention discloses a polyethylene material for a rotationally molded urea box and a preparation method for the polyethylene material. The polyethylene material is prepared by mixing the following components in percentage by mass: 74.4-92.8% of metallocene linear low density polyethylene, 5-15% of ultralow density polyethylene, 2-10% of polyisobutene and 0.2-0.6% of a processing agent. The polyethylene material disclosed by the invention has the characteristics of being good in adhesion with metal inserts, good in temperature resistance of a product, good in impact resistance of the product and good in cold and hot alternation resistance of the product.

Description

technical field [0001] The invention relates to a modified polyethylene composite material, in particular to a polyethylene material for rotomolding a urea tank and a preparation method thereof. Background technique [0002] Rotational molding is a plastic processing method that uses a rotating mold for processing. The processing process is to put plastic powder or slurry into the mold, and the closed mold is rotated or shaken on the equipment, and the mold is heated by an open flame or hot air. External heating, the plastic powder or slurry is turned and flowed inside the mold under the heated state. After the temperature reaches the softening point, it is gradually coated on the inner surface of the mold, melted and condensed. The mold is placed in the natural environment or passed through water, After cooling by media such as fog and wind, the mold is removed and the product is taken out. More than 90% of products in rotational molding are processed with polyethylene pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/00C08K5/098C08K5/134C08K5/526C08L23/06C08L23/22B29B9/06B29B13/10B29C47/92B29C48/92
CPCB29B9/06B29B13/10B29C48/92B29C2948/92209C08K5/00C08K5/098C08K5/1345C08K5/526C08L23/06C08L23/0815C08L23/22C08L2201/08C08L2205/02C08L2205/03C08L2207/06
Inventor 温原杭新华柴柏苍
Owner ZHEJIANG ROTOUN PLASTIC TECH