Super-toughened polyamide resin and preparation method thereof

A technology for toughening polyamide and resin, applied in the field of super tough polyamide resin and its preparation, can solve the problems of poor melt fluidity of toughened polyamide resin, limited application range, decreased mechanical properties, etc., and reduce production cost. , good melt fluidity, and the effect of improving toughening efficiency

Inactive Publication Date: 2018-04-24
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the molecular structure of all polyamide resins is basically similar, the main chain contains amide group repeating structural units. The high polarity of the amide group endows the polyamide resin with outstanding bending strength, wear resistance, and creep resistance. Poor impact strength at low temperature and dry state limits its application in automotive parts, sporting goods, hoses and machine belts
[0005] At present, the toughening method of polyamide resin is mainly to melt and extrude POE, EPDM, SBS and o

Method used

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  • Super-toughened polyamide resin and preparation method thereof
  • Super-toughened polyamide resin and preparation method thereof
  • Super-toughened polyamide resin and preparation method thereof

Examples

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Example Embodiment

[0064]

[0065] A preparation method of super tough polyamide resin, which comprises the following steps:

[0066] (1) Add 20-65 parts of dibasic acid, 20-70 parts of aliphatic diamine, 0.01-0.06 parts of catalyst and 30-160 parts of deionized water into the high-pressure reactor in sequence;

[0067] (2) Evacuate the autoclave and fill it with nitrogen three times, then adjust the pressure to 30-50kPa;

[0068] (3) Heat the autoclave, heat up to the first temperature, and perform a constant temperature reaction for 1-3 hours;

[0069] (4). Continue to heat up to the second temperature and increase the pressure to 1-3 MPa while keeping the pressure constant;

[0070] (5), then slowly increase the temperature at a rate of 0.2-1.8°C / min for 1-3 hours to the third temperature, and immediately after the temperature is increased, the pressure in the autoclave is vented to normal pressure at a rate of 0.007-0.097MPa / min , The pressure relief time is 0.5-2 hours, while maintaining a constant ...

Example Embodiment

[0088] Example 1:

[0089] The preparation method of the super-tough polyamide resin of this embodiment includes the following steps:

[0090] (1) Add 47 parts of adipic acid, 33 parts of hexamethylene diamine, 0.03 parts of sodium hypophosphite (as the first catalyst) and 100 parts of deionized water into the autoclave in sequence;

[0091] (2) Evacuate the autoclave, fill it with nitrogen three times, replace the air in the autoclave, and then pass in nitrogen at a pressure of 40kPa;

[0092] (3) Heating the autoclave so that the reaction is always carried out under the protection of inert gas. After the temperature is raised to the first temperature of 100°C, the constant temperature reaction is carried out for 1.5 hours;

[0093] (4) Continue to heat up to the second temperature of 220°C and adjust the pressure to 2MPa. At this time, release the water vapor in the reactor while keeping the pressure constant at 2MPa;

[0094] (5). Then slowly increase the temperature at a rate of 0.7°...

Example Embodiment

[0106] Example 2:

[0107] The preparation method of the super-tough polyamide resin of this embodiment includes the following steps:

[0108] (1) Add 43 parts of adipic acid, 27 parts of hexamethylene diamine, 0.01 parts of sodium hypophosphite (as the first catalyst) and 30 parts of deionized water into the autoclave in sequence;

[0109] (2) Evacuate the autoclave, fill it with nitrogen three times, replace the air in the autoclave, and then pass in nitrogen at a pressure of 50kPa;

[0110] (3) Heat the autoclave so that the reaction is always carried out under the protection of inert gas. After raising the temperature to the first temperature of 80°C, perform a constant temperature reaction for 3 hours;

[0111] (4). Continue to heat up to the second temperature of 240°C, adjust the pressure to 3MPa, and then release the water vapor in the reactor to keep the pressure constant at 3MPa;

[0112] (5), then slowly increase the temperature at a rate of 0.7°C / min for 1 hour to react at th...

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Abstract

The invention provides super-toughened polyamide resin and a preparation method thereof. The super-toughened polyamide resin comprises the following production raw materials: 20 to 65 parts of dicarboxylic acid, 20 to 70 parts of aliphatic diamine, 3 to 30 parts of an elastic component, 0.01 to 0.06 part of a first catalyst, 0.01 to 0.06 part of a second catalyst and 30 to 160 parts of deionized water. The super-toughened polyamide resin prepared by using the method provided by the invention has good mechanical properties and melt fluidity; in addition, compared with the toughness of ordinarypolyamide resin, the toughness of the super-toughened polyamide resin is significantly improved.

Description

Technical field [0001] The invention belongs to the technical field of polymer material synthesis, and specifically relates to a super tough polyamide resin and a preparation method thereof. Background technique [0002] Polyamide, commonly known as nylon, refers to a polymer with amide-based (-CONH-) repeating structural units on the polymer chain. It has excellent comprehensive properties such as high strength, wear resistance, self-lubrication, oil resistance and chemical corrosion resistance, and Better cost performance. Since the 1980s, with the rapid growth of the automotive and electronic and electrical industries, the production capacity of polyamide resin has increased sharply. Therefore, polyamide resin has become the engineering plastic with the largest amount and the widest application range. [0003] In recent years, in addition to the steady growth of the main types of polyamide resins such as PA6 and PA66, the importance of PA11, PA12, PA46 and some aromatic polyamid...

Claims

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Application Information

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IPC IPC(8): C08G69/44
CPCC08G69/44
Inventor 杨桂生赵冬云严莉莉
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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