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Large hollow container blow molding material and preparation method thereof

A large hollow, raw material technology, applied in the field of blow molding plastics, can solve the problems of difficult granulation, inability to stabilize supply for a long time, inconvenient production process, etc., to meet the processing performance and various physical and mechanical properties, excellent resistance to environmental stress cracking performance. , The effect of good rigidity and toughness balance

Active Publication Date: 2014-12-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the development of DMD1158 of Qilu Petrochemical is relatively mature, but due to the low melt flow rate, high viscosity, and difficult granulation, it is still shipped as powder, which brings great pressure to the production environment and environmental protection requirements.
There are also various quality reasons for other products. Many users choose to mix several materials, which causes inconvenience to the production process.
Although the quality of imported TR571 is stable, it is often out of stock and cannot be supplied stably for a long time. Moreover, according to the current market situation, it is far from being able to meet the production needs of manufacturers completely relying on imported materials.

Method used

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  • Large hollow container blow molding material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Raw materials for ethylene-hexene copolymerized polyethylene base resin:

[0040] The raw materials for the production of base resins are the following substances:

[0041] 1) The feed rate of polymer grade ethylene is 33.5 tons / hour

[0042] project

Purity%

Water content 10 -6

CO content10 -6

o 2 Content 10 -6

indicators

≥99.2

≤1

≤1

≤2

[0043] 2) Catalyst: NTR-973 dosage 246kg / hour

[0044] 3) 1-hexene addition 100kg / hour

[0045] project

Purity%

Water content 10 -6

CO content10 -6

Isomerized alpha olefins

indicators

≥98.5

≤20

≤5

≤1%

[0046] 4) diluent isobutane

[0047] The preparation method of ethylene-hexene copolymerized polyethylene base resin:

[0048]The diluent isobutane is always in a circulating state, inject ethylene and hexene into the loop reactor respectively, strictly control the feed ra...

Embodiment 2

[0059] Raw materials for ethylene-hexene copolymerized polyethylene base resin:

[0060] The raw materials for the production of base resins are the following substances:

[0061] 1) The feed rate of polymer grade ethylene is 35 tons / hour

[0062] project

Purity%

Water content 10 -6

CO content10 -6

o 2 Content 10 -6

indicators

≥99.2

≤1

≤1

≤2

[0063] 2) Catalyst: NTR-973 dosage 300kg / hour

[0064] 3) The amount of 1-hexene added is 140kg / hour

[0065] project

Purity%

Water content 10 -6

CO content10 -6

Isomerized alpha olefins

indicators

≥98.5

≤20

≤5

≤1%

[0066] 4) An appropriate amount of diluent isobutane.

[0067] The preparation method of ethylene-hexene copolymerized polyethylene base resin:

[0068] The diluent isobutane is always in a circulating state, inject ethylene and hexene into the loop reactor res...

Embodiment 3

[0079] Raw materials for ethylene-hexene copolymerized polyethylene base resin:

[0080] The raw materials for the production of base resins are the following substances:

[0081] 1) Polymerization grade ethylene feed rate 30 tons / hour

[0082] project

Purity%

Water content 10 -6

CO content10 -6

o 2 Content 10 -6

indicators

≥99.2

≤1

≤1

≤2

[0083] 2) Catalyst: NTR-973 dosage 200kg / hour

[0084] 3) 1-hexene addition 90kg / hour

[0085] project

Purity%

Water content 10 -6

CO content10 -6

Isomerized alpha olefins

indicators

≥98.5

≤20

≤5

≤1%

[0086] 4) An appropriate amount of diluent isobutane.

[0087] The preparation method of ethylene-hexene copolymerized polyethylene base resin:

[0088] The diluent isobutane is always in a circulating state, inject ethylene and hexene into the loop reactor respectively, strictl...

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Abstract

The present invention discloses a large hollow container blow molding material, which comprises the following raw materials, by weight, 99.9-100.0 parts of an ethylene hexene copolymerization polyethylene base resin, 0.05-0.10 part of an antioxidant, 0.07-0.12 part of a co-antioxidant, and 0.03-0.05 part of a slip agent. The present invention further discloses a preparation method for the large hollow container blow molding material. The large hollow container blow molding material has characteristics of low fusion index, large molecule weight, high strength, and the like, and is suitable for blowing of large size containers, wherein the product has prominent rigidity and toughness balancing capacity, creep resistance, excellent ESCR and good chemical resistance.

Description

technical field [0001] The invention belongs to the field of blow molding plastics, and in particular relates to a large hollow container blow molding material and a preparation method thereof. Background technique [0002] Compared with the traditional steel drum, the polyethylene all-plastic 200L hollow blow molding drum has the advantages of light weight, waterproof, moisture-proof, simple molding process, low production cost, seamless, and easy to print. Although the heat resistance, barrier performance, and impact resistance of plastic barrels are not as good as steel barrels, with the development of plastic technology, these properties of plastic barrels, such as impact resistance and barrier properties, have been well improved. At present, it has been widely used in the packaging of various dangerous and non-hazardous chemicals, oil products and other liquids. [0003] The 200L all-plastic hollow blow molding vat was first jointly developed by German Mauser Company a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/134C08K5/524C08K5/098C08K5/01B29B7/00
Inventor 马宇罡蔡伟苏和跃梁锡南苏肖群
Owner CHINA PETROLEUM & CHEM CORP
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