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A special material for low temperature resistant polypropylene

A technology of polypropylene and special materials, which is applied in the field of preparation and processing of polymer composite materials, can solve the problems of applicability and limit the application of 3PP anti-corrosion pipelines, achieve low cost, facilitate large-scale promotion and use, and meet market demand.

Active Publication Date: 2016-09-07
连云港珠钢防腐保温工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many patents and technologies related to polypropylene anticorrosion materials, these polypropylene anticorrosion materials all have applicability problems in low temperature environments
Therefore, the application of 3PP anti-corrosion pipelines in low temperature environments and areas with large temperature differences between day and night is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 50% copolymerized polypropylene A, 40% copolymerized polypropylene B, 5% OBC, 2% compatibilizer, 2% light shielding agent, 1% polypropylene heat-resistant toughening masterbatch, 0.1% antioxidant 1010, 0.2 % Antioxidant 168, 0.1% Light Stabilizer 622 were added into the high mixer and mixed evenly, extruded and granulated by twin-screw extruder, and the granules were dried at 100°C for 2 hours to remove moisture. The temperature is set at 180°C-230°C, the speed is set at 180r / min, the basic properties of the pellets: MI is 1.8g / 10min (230°C, 2.16kg), the tensile strength is ≥35MPa, and the elongation at break is ≥650%. Normal temperature impact strength ≥ 55KJ / m 2 , low temperature (-20°C) impact strength ≥ 10 KJ / m 2 .

Embodiment 2

[0039]50% copolymerized polypropylene A, 35% copolymerized polypropylene B, 8% OBC, 3% compatibilizer, 2% light shielding agent, 2% polypropylene heat-resistant toughening masterbatch, 0.2% antioxidant 1010, 0.2 % Antioxidant 168, 0.2% Light Stabilizer 622 were added into the high mixer and mixed evenly, extruded and granulated by twin-screw extruder, and the granules were dried at 100°C for 2 hours to remove moisture. The temperature is set at 180°C-230°C, the speed is set at 200r / min, the basic properties of the pellets: MI is 1.6g / 10min (230°C, 2.16kg), the tensile strength is ≥32MPa, and the elongation at break is ≥700%. Normal temperature impact strength ≥ 60KJ / m 2 , low temperature (-20°C) impact strength ≥ 22KJ / m 2 .

Embodiment 3

[0041] 50% copolymerized polypropylene A, 30% copolymerized polypropylene B, 10% OBC, 5% compatibilizer, 2% light shielding agent, 3% polypropylene heat-resistant toughening masterbatch, 0.1% antioxidant 1010, 0.2 % Antioxidant 168, 0.1% Light Stabilizer 944 were added into a high-mixer and mixed evenly, extruded and granulated by a twin-screw extruder, and the granules were dried at 100°C for 2 hours to remove moisture. The temperature is set at 180°C-230°C, the speed is set at 220r / min, the basic properties of the pellets: MI is 1.5g / 10min (230°C, 2.16kg), the tensile strength is ≥30MPa, and the elongation at break is ≥700%. Normal temperature impact strength ≥ 65KJ / m 2 , low temperature (-20°C) impact strength ≥ 30 KJ / m 2 .

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PUM

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Abstract

The invention relates to a low-temperature-resistant polypropylene special material. The special material comprises the following components in percentage by weight: 60%-90% of co-polypropylene base material, 5%-20% of olefin block copolymer (OBC), 1%-6% of polypropylene heat-resistant toughening master batch, 2%-10% of compatilizer, 2%-4% of light screening agent, 0.2%-0.4% of antioxidant and 0.1%-0.2% of light stabilizer. According to the low-temperature-resistant polypropylene special material, a special polypropylene base material, a novel toughening agent and a special additive are taken as the materials, the ratio of the materials is reasonably adjusted, and a blending modification process is used, so that the polypropylene special material has excellent low-temperature applicability on the basis of meeting the German standard.

Description

technical field [0001] The invention relates to a special material for polypropylene, in particular to a new special material for polypropylene with low-temperature resistance and anticorrosion pipelines and a preparation method thereof, belonging to the field of preparation and processing of polymer composite materials. Background technique [0002] With the vigorous development of my country's petrochemical and natural gas industries, oil pipelines and gas pipelines are widely used at home and abroad. For buried steel pipelines, the problems of protection and corrosion must first be solved. In the 1980s, a three-layer structure polyolefin anti-corrosion layer was introduced abroad. The three-layer structure is composed of bottom epoxy powder, middle layer adhesive, and outer layer polyolefin. In the mid-1990s, my country's long-distance oil and gas pipelines also adopted 3PE anti-corrosion coating structures. In recent years, with the need to undertake various project con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L53/00C08L23/12C08K3/22C08K3/04B29B9/06
CPCB29B9/06B29C48/92B29C2948/9258B29C2948/92704C08L23/14C08L2201/08C08L2205/025C08L2205/035C08L2205/08C08L2205/242C08L53/00C08L51/06C08L23/12C08K13/02
Inventor 朱东升张宝善韩丹孟富新顾浦中刘凤徐贤安
Owner 连云港珠钢防腐保温工程有限公司