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High-impact-resistance nylon 66 insulating material, and preparation method and application thereof

It is an insulating material and high impact resistance technology, which is applied in mechanical equipment, damage protection, pipeline anti-corrosion/rust protection, etc. It can solve the problems of loss of sealing performance of flanges, galvanic corrosion of loose flanges, and high labor costs. It is convenient for injection molding processing and use, shortens the construction period, and facilitates the construction effect

Inactive Publication Date: 2014-03-12
NANJING WENLI MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings about a problem: loose steel flanges and non-ferrous metals have different metal reactivity. After the two are in close contact, it is very easy to cause galvanic corrosion on the steel loose flanges, which may lead to severe cases. Lan loses sealing performance, which brings huge losses to users
[0005] 1. Use flanges with the same material as non-ferrous metal pipes, but it will increase the cost and weaken the strength;
[0006] 2. Special coatings are used to protect the pipes, but the construction process is complex, labor costs are high, and collisions and vibrations can easily cause the coating to fall off;
[0009] At present, the material usually used for the insulating protective sleeve is Teflon (polytetrafluoroethylene), which can effectively isolate the direct contact between the steel flange and the non-ferrous metal pipe, thereby effectively avoiding the potential difference caused by the potential difference between different metal materials. galvanic corrosion, but its cost is high and the cost performance is poor, which is not conducive to popularization and application

Method used

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  • High-impact-resistance nylon 66 insulating material, and preparation method and application thereof
  • High-impact-resistance nylon 66 insulating material, and preparation method and application thereof
  • High-impact-resistance nylon 66 insulating material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] An insulating protective cover, which is made of high-impact nylon 66 insulating material, and the high-impact nylon 66 insulating material comprises the following components in parts by weight: nylon 66 (i.e. polyhexamethylene adipamide ) 600 parts, HLDPE (ie linear low density polyethylene) 300 parts, antioxidant 168 (ie (2,4-di-tert-butylphenyl) phosphite triester) 1 part, antioxidant 1010 (ie four [ β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester) 0.5 parts, lubricant EBS (that is, ethylene bis stearamide) 2 parts, anti-ultraviolet agent 6 parts, arsenic-free 32 parts of glass fiber.

[0035] The preparation method of insulating protective cover of the present invention comprises the following steps:

[0036] S1 mixes the raw materials weighed in parts by weight, heats and melts, and makes colloidal particles;

[0037] S2 drying the colloidal particles;

[0038] S3 heats and melts the dried colloidal particles, and extrudes them according ...

Embodiment 2

[0047] An insulating protective cover, which is made of high-impact nylon 66 insulating material, the high-impact nylon 66 insulating material includes the following components in parts by weight: 1000 parts of nylon 66, 300 parts of HLDPE, antioxidant 1683 parts, 10102 parts of antioxidant, 6 parts of lubricant EBS, 6 parts of anti-ultraviolet agent, 28 parts of arsenic-free glass fiber

[0048] Its preparation method and application are the same as in Example 1.

[0049] The performance of the insulating protective sheath prepared in this embodiment is similar to that of the insulating protective sheath in Example 1, but because the specific gravity of the arsenic-free glass fiber is slightly lower, its toughness is slightly weaker than that of the insulating protective sheath in Example 1.

Embodiment 3

[0051] An insulating protective cover, which is made of high-impact nylon 66 insulating material, and the high-impact nylon 66 insulating material includes the following components in parts by weight: 66800 parts of nylon, 200 parts of HLDPE, and 1682 parts of antioxidant 10101 parts of antioxidant, 4 parts of lubricant EBS, 4 parts of anti-ultraviolet agent, 30 parts of arsenic-free glass fiber.

[0052] Its preparation method and application are the same as in Example 1.

[0053] The performance of the insulating protective sheath prepared in this embodiment is similar to that of the insulating protective sheath in Example 1, but because the specific gravity of the arsenic-free glass fiber is slightly higher, its toughness is slightly stronger than that of the insulating protective sheath in Example 1.

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Abstract

The invention relates to a high-impact-resistance nylon 66 insulating material comprises nylon 66, linear low density polyethylene, antioxidant 168, antioxidant 1010, lubricant EBS and anti-ultraviolet agent. By using the nylon 66 with excellent insulativity as the main component, the toughener, lubricant, antioxidant and anti-ultraviolet agent are further added, so that the high-impact-resistance nylon 66 insulating material has high corrosion resistance, pressure resistance and shock resistance; and the high-impact-resistance nylon 66 insulating material has the advantages of reasonable manufacturing structure and lower cost, is convenient for injection molding and use, and thus, has excellent cost performance and wide market prospects.

Description

technical field [0001] The invention relates to a high-impact nylon 66 insulating material and its preparation method and application. Background technique [0002] Non-ferrous metal pipes such as copper pipes and copper-nickel alloy pipes are currently widely used in petrochemical, shipbuilding and other fields. The main connection method is metal flanges as the main connector. high pressure. At present, except for some areas that use flanges of the same material as the pipelines, most pipelines are connected by loose-set steel flanges to reduce the cost of use. This brings about a problem: loose steel flanges and non-ferrous metals have different metal reactivity. After the two are in close contact, it is very easy to cause galvanic corrosion on the steel loose flanges, which may lead to severe cases. Orchid loses sealing performance, which brings huge losses to users. [0003] In order to solve the above problems, it is necessary to understand the causes of galvanic co...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L23/06C08K13/04C08K7/14C08K5/526C08K5/134C08K5/20F16L58/18
CPCC08L77/06F16L58/187C08L23/0815C08K13/04C08K7/14C08K5/526C08K5/1345C08K5/20
Inventor 黄文龙
Owner NANJING WENLI MACHINERY MFG
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