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Special material for transparent nylon tube and preparation method thereof

A nylon tube and special material technology, which is applied in the field of special materials for transparent nylon tubes and its preparation, can solve the problems of large temperature influence, poor resistance to bending deformation, poor flexibility, etc., and achieves excellent low temperature resistance, good wear resistance, cost reduction effect

Inactive Publication Date: 2021-03-09
建湖县兴隆尼龙有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nylon 11 tube material polyω-aminoundecanoyl in the prior art has the advantages of low water absorption, good oil resistance, low temperature resistance, and easy processing. The nylon 12 tube material polylaurolactam in the prior art has the characteristics and PA11 is similar, but the crystal structure is different. It is a good electrical insulator and like other polyamides, it will not affect the insulation performance due to moisture. It has certain impact resistance and chemical stability, but it still has high cost and resistance within the elastic limit. Poor ability to bend and deform, and poor transparency
[0003] The water absorption rate of nylon 1012 pipe material in the prior art is lower than that of nylon, and it is oil-resistant, alkali-resistant and non-toxic, but it is greatly affected by temperature, wear resistance, and flexibility are poor, and the modified and added components of nylon 1012 are complicated , Dimensional stability, insufficient extrusion processability, poor modification effect, and limited by foreign technology and raw materials, it is difficult to meet the production and application of automobile brake pipes, oil pipes, etc. in the prior art, as well as transparent nylon pipes that require low temperature resistance and high toughness. need

Method used

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  • Special material for transparent nylon tube and preparation method thereof
  • Special material for transparent nylon tube and preparation method thereof
  • Special material for transparent nylon tube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of nylon tube special material, wherein, comprises the following steps:

[0027] (1) Preparation of high-viscosity nylon 1012: Add decanediamine, dodecanedibasic acid, sebacic acid and distilled water into the kettle at a mass ratio of 2.5:3:1, raise the temperature and pressure to 240°C, discharge water vapor, The pressure reaches 1.5MPa, after 2 hours of reaction, it is lowered to normal pressure, the temperature is controlled at 250°C, pressurized, extruded, cooled, pelletized, dried, and packaged to obtain transparent copolymerized nylon 1012;

[0028] Add 100Kg of copolymerized nylon 1012 into a conical vacuum rotary dryer, raise the temperature to 165°C and react at a negative pressure of -0.098MPa for 8 hours, detect the melt index and control it at 4-6g / 10min to obtain high-viscosity nylon 1012;

[0029] (2) Preparation of high-viscosity nylon elastomer: Add decanediamine, dodecanedibasic acid and alcohol into the neutralization kett...

Embodiment 2

[0035] A kind of preparation method of nylon tube special material, wherein, comprises the following steps:

[0036] (1) Preparation of high-viscosity nylon 1012: Add decanediamine, dodecanedibasic acid, sebacic acid and distilled water into the kettle at a mass ratio of 2.5:3:1, raise the temperature and pressure to 240°C, discharge water vapor, The pressure reaches 1.5MPa, after 3 hours of reaction, it is lowered to normal pressure, the temperature is controlled at 250°C, pressurized, extruded, cooled, pelletized, dried, and packaged to obtain transparent copolymerized nylon 1012;

[0037] Add 100Kg of copolymerized nylon 1012 into a conical vacuum rotary dryer, raise the temperature to 165°C and react at a negative pressure of -0.098MPa for 8 hours, detect the melt index and control it at 4-6g / 10min to obtain high-viscosity nylon 1012;

[0038] (2) Preparation of high-viscosity nylon elastomer: Add decanediamine, dodecanedibasic acid and alcohol into the neutralization kettle...

Embodiment 3

[0043] A kind of preparation method of nylon tube special material, wherein, comprises the following steps:

[0044] (1) Preparation of high-viscosity nylon 1012: Add decanediamine, dodecanedibasic acid, sebacic acid and distilled water into the kettle at a mass ratio of 2.5:3:1, raise the temperature and pressure to 240°C, discharge water vapor, The pressure reaches 1.5MPa, after 3 hours of reaction, it is lowered to normal pressure, the temperature is controlled at 250°C, pressurized, extruded, cooled, pelletized, dried, and packaged to obtain transparent copolymerized nylon 1012;

[0045] Add 100Kg of copolymerized nylon 1012 into a conical vacuum rotary dryer, raise the temperature to 165°C and react at a negative pressure of -0.098MPa for 8 hours, detect the melt index and control it at 4-6g / 10min to obtain high-viscosity nylon 1012;

[0046] (2) Preparation of high-viscosity nylon elastomer: Add decanediamine, dodecanedibasic acid and alcohol into the neutralization kett...

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PUM

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Abstract

The invention relates to a special material for a transparent nylon tube and a preparation method of the special material, the special material for the transparent nylon tube comprises high-viscositynylon 1012, a high-viscosity nylon elastomer, a plasticizer and auxiliary agents according to a weight ratio of (80-90): (5-10): (5-10): (1-2), the high-viscosity nylon 1012 is prepared from decanediamine, dodecanedioic acid and sebacic acid, wherein the high-viscosity nylon elastomer is prepared from a nylon 1012 monomer, polybutylene glycol and dimer acid, the plasticizer is N-ethyl-o-toluenesulfonamide, the auxiliary agents are an antioxidant, a light stabilizer, an anti-copper agent and a lubricant, and blending extrusion is performed through double screws at a proper screw combination anda proper temperature to prepare the special material for the transparent nylon tube. The special material has the advantages of high toughness, excellent low-temperature property, favorable wear resistance, low water absorptivity, dimensional stability and favorable extrusion processability, obviously lowers the cost, overcomes the defects of dependence on external raw materials and techniques, and can be used for manufacturing automobile brake pipes, oil delivery pipes, low-temperature-resistant high-toughness transparent pipes and the like.

Description

technical field [0001] The invention relates to a special material for transparent nylon tubes and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Nylon tube has smooth surface, reduces resistance, can prevent rust and scale deposition, and is easy to process and install. It is widely used in air, water, chemical lubrication, instrument lines, irrigation control systems, textile factories, food factories, vehicles And ships' fuel delivery pipes, vacuum systems, air conditioning systems, vibration insulators, electrostatic insulators and other industries. The nylon 11 tube material polyω-aminoundecanoyl in the prior art has the advantages of low water absorption, good oil resistance, low temperature resistance, and easy processing. The nylon 12 tube material polylaurolactam in the prior art has the characteristics and PA11 is similar, but the crystal structure is different. It is a good electrical insulator a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L77/08C08L83/04C08L67/02C08K5/435C08K5/20C08K5/526C08K5/25B29C48/09
CPCC08L77/06B29C48/022B29C48/09C08L2201/10C08L2205/02C08L2205/035C08L2203/18
Inventor 崔兆武
Owner 建湖县兴隆尼龙有限公司
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