Low-odor polyamide composition and preparation method thereof

A polyamide composition and low-odor technology, applied in the field of low-odor polyamide composition and its preparation, can solve problems such as odor generation, and achieve the effect of improving odor

Active Publication Date: 2018-02-02
SHANGHAI KINGFA SCI & TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can solve the problem of odor caused by the catalytic degradation of polyamide materials during the production, storage, transportation and

Method used

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  • Low-odor polyamide composition and preparation method thereof
  • Low-odor polyamide composition and preparation method thereof
  • Low-odor polyamide composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] Prepare raw materials according to the following components and parts by weight:

[0038] PA66 99kg;

[0039] Disodium hydrogen phosphate 1kg;

[0040] The low-odor polyamide composition pelletized through the above blending extrusion process further passes through the odor removal process of the present invention. The odor removal process includes putting the initially obtained low-odor polyamide composition into a vacuum tank and performing the following step:

[0041] (1) Replace the air inside the tank with nitrogen gas, repeat the operation 3 times to remove oxygen in the air;

[0042] (2) Seal and extract vacuum so that the internal pressure of the tank is less than or equal to 133 Pascal;

[0043] (3) The low-odor polyamide composition inside the vacuum tank is heated by a heating coil sandwiched between the tank body to a temperature of 60° C., and treated by a constant temperature method for 120 minutes.

Example Embodiment

[0044] Example 2

[0045] Prepare raw materials according to the following components and parts by weight:

[0046] PA66 99kg;

[0047] Disodium hydrogen phosphate 1kg;

[0048] The low-odor polyamide composition obtained by granulating through the above blending and extrusion process further passes through the odor removal process of the present invention. The odor removal process includes placing the initially obtained low-odor polyamide composition in a vacuum tank and performing The following steps:

[0049] (1) The low-odor polyamide composition inside the vacuum tank is heated by the heating coil interlayer of the tank body to bring the temperature to a temperature of 180°C, and the treatment is performed in a constant temperature mode for 30 minutes;

[0050] (2) Seal and extract vacuum so that the internal pressure of the tank is less than or equal to 133 Pascal;

[0051] (3) Replace the air inside the tank with nitrogen gas, repeat the operation 3 times to remove oxygen from the...

Example Embodiment

[0052] Example 3

[0053] Prepare raw materials according to the following components and parts by weight:

[0054] PA66 99kg;

[0055] Disodium hydrogen phosphate 1kg;

[0056] The low-odor polyamide composition pelletized through the above blending and extrusion process is further subjected to the odor removal process of the present invention. The odor removal process includes placing the initially obtained low-odor polyamide composition in a vacuum tank and performing The following steps:

[0057] (1) Seal and extract vacuum so that the internal pressure of the tank is less than or equal to 133 Pascal;

[0058] (2) Replace the air inside the tank with nitrogen gas, repeat the operation 3 times to remove oxygen in the air;

[0059] (3) The low-odor polyamide composition inside the vacuum tank is heated by the heating coil sandwiched between the tank body to a temperature of 120° C., and treated by a constant temperature method for 45 minutes.

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PUM

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Abstract

The invention discloses a low-odor polyamide composition. The low-odor polyamide composition is prepared from the following components in parts by weight: 95 to 100 parts of polyamide, 0.01 to 5 partsof phosphate, 0 to 35 parts of aids, 0 to 1 part of a heat stabilizer and 0 to 1 part of an antioxidant. According to the low-odor polyamide composition disclosed by the invention, by introducing thephosphate, the impurities leading to catalytic degradation of a polyamide material can be inactivated, and further the production of a product with a disturbing odor is inhibited; in addition, the residual monomer of the polyamide in a production process and the components in a low polymer form are eliminated through reaction in the preparation process, and further the odor of a low-odor nylon composition is improved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a low-odor polyamide composition and a preparation method thereof. Background technique [0002] As the regulations issued by the national government have increasingly stringent environmental protection requirements for automobiles, various automobile OEMs have formulated odor standards for automotive interior materials to regulate parts or materials that may affect the odor of the car cockpit, such as Volkswagen's PV 3900 sets out sampling and odor assessment requirements for parts of different sizes and specifications in automotive interiors. [0003] The residual monomers or oligomers in the synthesis process of polyamide materials volatilize during injection molding and use, which seriously affects the odor level of the material. There are differences in the polymerization methods of polypropylene and polyolefin polymers. Polyamide materials are formed through polycondensati...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K3/32C08K7/14C08L77/02
CPCC08K3/32C08K7/14C08K2201/014C08L77/06C08L77/02
Inventor 夏建盟林洁龙袁绍彦杨军张超黄河生
Owner SHANGHAI KINGFA SCI & TECH
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