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High-abrasion-resistant corrosion-resistant inorganic particle crosslinking polyethylene composite material and preparation method thereof

A technology of nano-inorganic particles and cross-linked polyethylene, which is applied in the field of cross-linked polyethylene composite materials and its preparation, can solve problems such as increased process flow and cost, reduced density, and cross-corrosion resistance, achieving excellent chemical corrosion resistance and Barrier properties, reduced crystallinity reduction, anti-corrosion and excellent barrier properties

Active Publication Date: 2012-06-27
NANJING JULONG SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN 1876706A discloses a preparation method of silane cross-linked polyethylene plastic, which is widely used in anti-cracking pipes and cable materials, but the materials formed by this process must be post-treated in a water bath (or steam bath), which increases the process flow and cost, and the degree of cross-linking of the material is not high, which cannot meet the requirements of high anti-corrosion
Patents CN1524899A and CN1523052A use linear low-density polyethylene and low-density polyethylene composite ingredients as the base resin, and use a peroxide cross-linking process to prepare cross-linked polyethylene for rotational molding. The cross-linked polyethylene prepared by this process has good resistance Impact and chemical resistance, but the two raw materials are low-density polyethylene, the corrosion resistance of the raw materials is relatively poor, after cross-linking, the density is further reduced, although the material will not be corroded by dissolution, it is easily corroded by swelling, In fact, it is not suitable for pipelines with high requirements on corrosion and barrier properties; in addition, the patent CN1039039A uses radiation to prepare radiation-type cross-linked polyethylene, and the material is used for jointing of oil field gathering and transportation steel anti-corrosion and heat-preservation pipelines aspect
However, compared with chemical cross-linking, radiation cross-linking efficiency is very low, and the degree of material cross-linking is low, which cannot meet the anti-corrosion requirements, and due to equipment limitations, it is difficult to achieve internal anti-corrosion of small-diameter long pipelines

Method used

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  • High-abrasion-resistant corrosion-resistant inorganic particle crosslinking polyethylene composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] formula:

[0027] The raw materials contained in component A are:

[0028] Linear Low Density Polyethylene LLDPE 735 100%

[0029] Polyethylene modifier 20%

[0030] Antioxidant 0.3%;

[0031] The raw materials contained in component B are:

[0032] High Density Polyethylene HDPE HMA025 40%

[0033] Linear Low Density Polyethylene LLDPE 735 60%

[0034] Ultrafine Al2O3 10%

[0035] Nano-MoS2 5%

[0036] Dispersed lubricant 0.5%

[0037] Surface treatment agent 0.3%

[0038] Cross-linking agent 0.4%

[0039] Auxiliary cross-linking agent 0.6%.

[0040] Ultrafine Al 2 o 3 for highly purified Al 2 o 3 , fineness 5000 mesh; nano-MoS 2 Fineness 10000 mesh.

[0041] The crosslinking agent is a peroxide type crosslinking agent, which is 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane. The co-crosslinking agent is triallyl isocyanurate. The surface treatment agent is γ-glycidyl etheroxypropyl trimethoxysilane (560KH). The dispersing lubricant is ethylene bis steara...

Embodiment 2

[0048] formula:

[0049] The raw materials contained in component A are:

[0050] Linear Low Density Polyethylene LLDPE 735 100%

[0051] Polyethylene modifier 20%

[0052] Antioxidant 0.3%

[0053] The raw materials contained in component B are:

[0054] High Density Polyethylene HDPE HMA025 40%

[0055] Linear Low Density Polyethylene LLDPE 735 60%

[0056] Ultrafine Al2O3 15%

[0057] Nano-MoS2 5%

[0058] Dispersed lubricant 0.5%

[0059] Surface treatment agent 0.3%

[0060] Cross-linking agent 0.3%

[0061] Auxiliary cross-linking agent 0.5%.

[0062] Ultrafine Al 2 o 3 for highly purified Al 2 o 3 , fineness 5000 mesh; nano-MoS 2 Fineness 10000 mesh.

[0063] The crosslinking agent is a peroxide type crosslinking agent, which is 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane. The co-crosslinking agent is triallyl isocyanurate. The surface treatment agent is γ-glycidyl etheroxypropyl trimethoxysilane (560KH). The dispersing lubricant is ethylene bis stearam...

Embodiment 3

[0071] formula:

[0072] The raw materials contained in component A are:

[0073] Linear Low Density Polyethylene LLDPE 735 100%

[0074] Polyethylene modifier 15%

[0075] Antioxidant 0.3%;

[0076] The raw materials contained in component B are:

[0077] High Density Polyethylene HDPE HMA025 30%

[0078] Linear Low Density Polyethylene LLDPE 735 70%

[0079] Ultrafine Al2O3 10%

[0080] Nano-MoS2 5%

[0081] Dispersed lubricant 0.4%

[0082] Surface treatment agent 0.3%

[0083] Cross-linking agent 0.2%

[0084] Auxiliary cross-linking agent 0.4%.

[0085] Ultrafine Al 2 o 3 for highly purified Al 2 o 3 , fineness 5000 mesh; nano-MoS 2 Fineness 10000 mesh.

[0086] The crosslinking agent is a peroxide type crosslinking agent, which is 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane. The co-crosslinking agent is triallyl isocyanurate. The surface treatment agent is γ-glycidyl etheroxypropyl trimethoxysilane (560KH). The dispersing lubricant is ethylene bis stearami...

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Abstract

The invention relates to a crosslinking polyethylene composite material and a preparation method thereof, in particular to a high-abrasion-resistant corrosion-resistant inorganic particle crosslinking polyethylene composite material and a preparation method thereof. The high-abrasion-resistant corrosion-resistant inorganic particle crosslinking polyethylene composite material consists of a component A and a component B, wherein the component A comprises 100 percent of linear low-concentration polyethylene, 10-30 percent of polyethylene modifying agent and 0.1-5 percent of antioxygen; the component B comprises 30-70 percent of high-concentration polyethylene, 70-30 percent of linear low-concentration polyethylene, 10-30 percent of ultrafine Al2O3, 5-15 percent of nanometer MoS2, 0.1-1.0 percent of scattered lubricant, 0.2-0.5 percent of surface treating agent, 0.1-1 percent of cross-linking agent and 0.2-1.5 percent of auxiliary crosslinking agent. The basic resin adopted in the invention is a composite material of high-concentration polyethylene and linear low-concentration polyethylene, the invention ensures the sufficient crosslinking effect and reduces the crystallinity to the maximum extent so that the crosslinking material has excellent rigidity and hardness and excellent chemical corrosion resistance and barrier property.

Description

technical field [0001] The invention relates to a cross-linked polyethylene composite material and a preparation method thereof, in particular to a high wear-resistant and anti-corrosion nano inorganic particle cross-linked polyethylene composite material and a preparation method thereof. Background technique [0002] With the development of the economy, various industries such as chemical industry, petroleum, shipbuilding, power plants, public utilities, etc. have increasingly urgent requirements for corrosion protection of pipelines and pumps, and their grades have been continuously improved. In order to give the pipeline more superior anti-corrosion performance, plastic pipes were used instead of steel pipes. However, in most applications, the plastic pipes are not strong enough and their rigidity is not enough, which greatly limits their scope of use. The steel-plastic composite anti-corrosion pipe is coated with a good plastic coating protective film on the surface of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08L51/06C08K13/06C08K3/22C08K3/30C08K5/14
Inventor 吴建国李云岩牧晓春吴汾
Owner NANJING JULONG SCI&TECH CO LTD