High-toughness semi-aromatic nylon and its preparation method

A semi-aromatic nylon, high-toughness technology, applied in the field of toughened semi-aromatic nylon and its preparation, can solve problems such as unsatisfactory toughness, overcome poor impact resistance, improve toughness, and excellent impact resistance Effect

Inactive Publication Date: 2004-10-20
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved in the present invention is to disclose a high-toughness semi-aromatic nylon, so as to overcome the imperfect toughness existing in the prior art and meet the needs of relevant industrial sectors;

Method used

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  • High-toughness semi-aromatic nylon and its preparation method
  • High-toughness semi-aromatic nylon and its preparation method
  • High-toughness semi-aromatic nylon and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Mix 1014 grams of nylon 10T salt, 380 grams of nylon 10I salt, 1400 grams of deionized water, 30 grams of silicone oil, 5 grams of NaH 2 PO 2 and 72 grams of PA1212 resin into a 5-liter steel reactor. First evacuated, then passed 0.2MPa nitrogen, and started to heat up. When the pressure rises to 3.2Mpa, start holding pressure. When the temperature rises to 290-300°C, the pressure is reduced. When the temperature rises to 320°C, the temperature is kept at a constant temperature and normal pressure for 30 minutes, and then the material is discharged from the reaction kettle. The thermal and mechanical properties of the resin are as follows:

[0035] Melting point: (Tm) 305°C Tensile strength: 41.2MPa Elongation at break: 4.2%

[0036] Flexural modulus: 3019Mpa Izod notched impact strength: 58J / m

[0037] Heat distortion temperature: 124℃.

Embodiment 2

[0039] 1014 grams of nylon 9T salt, 380 grams of nylon 9I salt, 1400 grams of deionized water, 30 grams of silicone oil and 115 grams of PA1212 resin were added to a 5-liter steel reaction kettle. The specific operation process is the same as that of Example 1. The thermal and mechanical properties of the resin are as follows:

[0040] Melting point: (Tm) 300°C Tensile strength: 67.6MPa Elongation at break: 6%

[0041] Flexural modulus: 2910Mpa Izod notched impact strength: 88J / m

[0042] Heat distortion temperature: 114℃.

Embodiment 3

[0044] 1014 grams of nylon 9T salt, 380 grams of nylon 9I salt, 42 grams of caprolactam, 1400 grams of deionized water, and 144 grams of PA1010 resin were added to a 5-liter steel reactor. The specific operation process is the same as that of Example 1. The thermal and mechanical properties of the resin are as follows:

[0045] Melting point: (Tm) 295°C Tensile strength: 91.2MPa Elongation at break: 6.4%

[0046] Flexural modulus: 2830Mpa Izod notched impact strength: 110J / m

[0047] Heat distortion temperature: 110℃.

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Abstract

A high-toughness semi-aromatic nylon is disclosed, which has high tension strength (40 MPa), elongation for break (6%), bending modulus (3000 MPa) and Izod notch impact strength (100 J/m). Its preparing process is also disclosed, which features that the nylon resin with long carbon chain is also used as one of its raw materials.

Description

technical field [0001] The invention relates to a semi-aromatic nylon and a preparation method thereof, in particular to a toughened semi-aromatic nylon and a preparation method thereof. technical background [0002] Nylon resin (PA) has excellent mechanical properties such as wear resistance, self-lubrication, oil resistance, temperature resistance, etc. It is the most widely used engineering plastics at home and abroad, ranking first among the five major engineering plastics. And semi-aromatic nylons such as PA6T, PA9T, PA12T, etc. have some incomparable properties of general aliphatic nylons. They have good dimensional stability, heat resistance, high hardness, low hygroscopicity and excellent chemical stability. It is widely used in electrical and auto parts. [0003] In British Patent GB1070416, Davis Anthony Charles of ICI Company disclosed a series of synthetic methods of semi-aromatic nylon PA7T, PA9T, PA10T, PA12T, etc. In the patent about PA10T, the patent uses 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/48
Inventor 张荣福杨桂生李惠文林杏仙
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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