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Ternary polypropylene material and preparation method thereof

A technology of ternary polypropylene and polypropylene, which is applied in the field of polypropylene materials and can solve problems such as restrictions, difficult production, and high production costs

Inactive Publication Date: 2021-04-20
SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polybutene products have the advantages of good chemical stability, good hygienic performance, good frost crack resistance, excellent impact resistance, no scaling, corrosion resistance, long service life, etc., but the production is difficult and the production cost is high
[0005] The existing polypropylene materials have certain limitations in aging resistance and low temperature resistance, which limits their development. Therefore, the development of polypropylene materials with better low temperature resistance is of great significance to its development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A ternary polypropylene material, based on 100% by weight, consists of the following components: ethylene-propylene copolymer 45%, LLDPE 39.3%, polybutene 15%, antioxidant 1010 0.2%, light stabilizer GW -480 0.1%, nucleating agent NAA3250.1%, single color masterbatch 0.2%, transparent agent Nx8000 0.1%;

[0026] Wherein, the density of the LLDPE is 0.96g / cm 3 ;

[0027] The polybutene has a melt index measured at 230°C and a load of 2.16kg to be 35g / 10min;

[0028] The molar content of ethylene in the ethylene-propylene copolymer is 10%, and the molar content of propylene is 90%;

[0029] The ternary polypropylene material is prepared by the following method:

[0030] (1) Mix antioxidant, light stabilizer, nucleating agent, color masterbatch, and clearing agent evenly to obtain mixed additives;

[0031] (2) Add polybutene, LLDPE, impact copolymerized polypropylene, and mixed additives into a twin-screw extruder, and extrude to pelletize; The third stage is 250°C, t...

Embodiment 2

[0033] A ternary polypropylene material, based on 100% by weight, consists of the following components: ethylene-propylene copolymer 64.1%, LLDPE 25%, polybutene 9%, antioxidant 168 0.5%, light stabilizer GW -480 0.3%, nucleating agent NAA3250.3%, single color masterbatch 0.5%, transparent agent Nx8000 0.3%;

[0034] Wherein, the density of the LLDPE is 0.92g / cm 3 ;

[0035] The polybutene has a melt index of 0.1g / 10min measured at 230°C under a load of 2.16kg;

[0036] The molar content of ethylene in the ethylene-propylene copolymer is 25%, and the molar content of propylene is 75%;

[0037] The ternary polypropylene material is prepared by the following method:

[0038] (1) Mix antioxidant, light stabilizer, nucleating agent, color masterbatch, and clearing agent evenly to obtain mixed additives;

[0039] (2) Add polybutene, LLDPE, impact copolymerized polypropylene, and mixed additives into a twin-screw extruder, and extrude to pelletize; The third stage is 290°C, the...

Embodiment 3

[0041] A ternary polypropylene material, based on 100% by weight, consists of the following components: ethylene-propylene copolymer 56.7%, LLDPE 30%, polybutene 12%, antioxidant 1010 0.4%, light stabilizer GW -480 0.2%, nucleating agent NAA3250.2%, single color masterbatch 0.3%, transparent agent Nx8000 0.2%;

[0042] Wherein, the density of the LLDPE is 0.94g / cm 3 ;

[0043] The polybutene has a melt index of 1.0g / 10min measured at 230°C under a load of 2.16kg;

[0044] The molar content of ethylene in the ethylene-propylene copolymer is 15%, and the molar content of propylene is 85%;

[0045] The ternary polypropylene material is prepared by the following method:

[0046] (1) Mix antioxidant, light stabilizer, nucleating agent, color masterbatch, and clearing agent evenly to obtain mixed additives;

[0047] (2) Add polybutene, LLDPE, impact copolymer polypropylene, and mixed additives into a twin-screw extruder, extrude and granulate; the extruding granulation process i...

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Abstract

The invention discloses a ternary polypropylene material. The ternary polypropylene material is composed of the following components in percentage by weight: 45-65% of impact-resistant co-polypropylene, 25-40% of LLDPE, 9-15% of polybutylene, 0.2-0.5% of antioxidant, 0.1-0.3% of light stabilizer, 0.1-0.3% of nucleating agent, 0.2-0.5% of color master batch and 0.1-0.3% of transparent agent; and the impact-resistant co-polypropylene is an ethylene-propylene copolymer or an ethylene-propylene-butylene copolymer. The invention also discloses a preparation method of the ternary polypropylene material. The ternary polypropylene material provided by the invention is good in impact resistance, high in aging resistance and low temperature resistance, low in brittleness temperature and simple in preparation process.

Description

technical field [0001] The invention belongs to the technical field of polypropylene materials, and in particular relates to a ternary polypropylene material and a preparation method thereof. Background technique [0002] Polyolefin has become one of the important industries of many petrochemical enterprises. Facing problems such as intensified competition in the same industry, shrinking profit margins, balanced supply and demand, overcapacity in some parts, and prominent structural contradictions in products, it is urgent to develop polyolefin products with different properties and develop In the downstream industry of polyolefins, promoting the development of products to high-end, differentiated and functional is an effective way to realize the industrial upgrading of polyolefin enterprises. [0003] The loop tube method and the horizontal stirred bed process are the main production processes of polypropylene, which are bulk polymerization methods, that is, no other solven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/16C08L23/08C08L23/20C08K5/134C08K5/526
Inventor 刘星高志争陈佑涛孙明
Owner SHAANXI YANCHANG PETROLEUM GRP