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Polypropylene material for MPP (modified polypropylene) jacking pipe

A technology of polypropylene material and homopolypropylene, which is applied in the field of polypropylene material for MPP pipe jacking

Inactive Publication Date: 2013-03-20
LUOYANG CITY HEZHIYANG MACROMOLECULE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, MPP pipe jacking requires high toughness, strength, welding strength and ring stiffness. At present, the polypropylene directly polymerized by petrochemical manufacturers cannot meet the requirements of MPP pipe jacking.

Method used

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  • Polypropylene material for MPP (modified polypropylene) jacking pipe
  • Polypropylene material for MPP (modified polypropylene) jacking pipe
  • Polypropylene material for MPP (modified polypropylene) jacking pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0035] The polypropylene material for MPP pipe jacking of the present invention is composed of the following components: low-fluidity homopolypropylene, powder produced by Luoyang Petrochemical, brand 003-2, additive amount 35wt%, pipe-grade copolymerized polypropylene, produced by Yanshan Petrochemical 8101, 50wt%, self-made cross-linked product 3wt%, inorganic reinforcing agent heavy calcium carbonate 9wt%, antioxidant is a compound of 1010 and 168, adding amount 0.15wt%, nucleating agent is rosin petroleum resin 0.05wt %, composite pigment 0.3wt%, internal and external lubricant 2.5wt%.

[0036] The performance of the special material for MPP pipe jacking of the above formula is shown in Table 3 below:

[0037] Table 3

[0038]

Embodiment example 2

[0040] The polypropylene material for MPP pipe jacking of the present invention is composed of the following components by weight percentage: low fluidity homopolypropylene, powder produced by Luoyang Petrochemical, brand 003-1, 50wt%, pipe grade copolymerized polypropylene, produced by Yanshan Petrochemical 4220, 25wt%, self-produced cross-linked product 10wt%, inorganic reinforcing agent is barium sulfate, 12wt%, antioxidant is a compound of 1010 and 168, adding 0.3wt%, nucleating agent is rosin petroleum resin 0.2wt%, composite pigment 0.2wt%, internal and external lubricant 2.3wt%.

[0041] The performance of the MPP pipe jacking material with the above formula is shown in Table 4

[0042] Table 4

[0043]

Embodiment example 3

[0045] The application of the polypropylene material for MPP pipe jacking of the present invention in the production of MPP pipe jacking consists of the following components by weight percentage: low fluidity homopolypropylene, powder produced by Luoyang Petrochemical, brand 003-2, 40wt%, pipe material Grade copolymer polypropylene, 4220 produced by Yanshan Petrochemical, 40wt%, 8% self-produced cross-linked product, 5wt% inorganic reinforcing agent heavy calcium carbonate, 3.5wt% barium sulfate, antioxidant is a compound of 1010 and 168, The addition amount is 0.4wt%, the nucleating agent is 0.1wt% rosin petroleum resin, the composite pigment is 1.5wt%, and the internal and external lubricant is 1.5wt%.

[0046] The performance of the special material for MPP pipe jacking with the above formula is shown in Table 5

[0047] table 5

[0048]

[0049] The self-produced cross-linked product in the above-mentioned embodiment adopts 75wt% polyethylene and 25wt% EPDM rubber as r...

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Abstract

The invention discloses a polypropylene material for an MPP (modified polypropylene) jacking pip, relating to the technical field of high molecule plastics. The polypropylene material comprises the following components: 25-50 percent by weight of low-flow homogeneous polypropylene powder, 25-50 percent by weight of pipe-grade propylene copolymer aggregates, 3-10 percent by weight of cross-linkingmaterial, 5-40 percent by weight of inorganic reinforcing agent, 0.1-4 percent by weight of antioxidant and nucleating agent, 0.1-3 percent by weight of composite pigment and 1-5 percent by weight ofinternal and external lubricants for a high molecular material. The material disclosed by the invention has high toughness, high tensile strength, high bending strength and welding strength and long service life.

Description

technical field [0001] The invention relates to the technical field of polymer plastics, in particular to a polypropylene material for MPP pipe jacking. Background technique [0002] In recent years, with the improvement of polypropylene production process and the improvement of polymerization process, new special polypropylene materials used in various aspects continue to appear; polypropylene products have been widely used in packaging, transportation, home appliances, automobiles, office, building materials and other fields application. [0003] Polypropylene products are divided into homopolymerization and copolymerization, and copolymerization is divided into block copolymerization and random copolymerization. Homopolypropylene has poor toughness, large molding shrinkage, and easy warping of parts when it is impacted at low temperature; copolymerized polypropylene improves low-temperature impact and has better flexibility, but its tensile strength and bending strength ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08K7/14C08K3/36C08K3/30C08K3/26C08J3/24C08L23/06C08L23/08C08L23/16F16L9/12
Inventor 周春怀
Owner LUOYANG CITY HEZHIYANG MACROMOLECULE MATERIAL
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