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Modified PA6/PA12 alloy material with low water absorption and preparation method thereof

A low water absorption, alloy material technology, applied in the field of polymer material processing, can solve the problems of water absorption and dimensional stability research without PA6/PA12 materials, and achieve the effects of shortening crystallization time, improving physical properties, and increasing crystallization temperature

Inactive Publication Date: 2019-08-27
横店集团得邦工程塑料有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the existing invention patents has involved and studied the water absorption and dimensional stability of PA6 / PA12 materials.

Method used

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  • Modified PA6/PA12 alloy material with low water absorption and preparation method thereof
  • Modified PA6/PA12 alloy material with low water absorption and preparation method thereof
  • Modified PA6/PA12 alloy material with low water absorption and preparation method thereof

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Experimental program
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Embodiment

[0024] A modified PA6 / PA12 alloy material with low water absorption, comprising the following components in parts by weight:

[0025]

[0026] Prepare the material of embodiment 1-4 and comparative example 1-5 by following preparation method:

[0027] (1) Add PA6 and PA12 resins to a high-speed mixer, then add toughening agent, lanthanum oxide, antioxidant, lubricant, and then stir evenly in a high-speed mixer at room temperature (see Table 1 for the specific materials added) , the PA12 resin is an amorphous polyamide resin with a crystallinity between 55-65%);

[0028] (2) Put the mixed material in a co-rotating twin-screw extruder, add glass fiber in the form of side feeding in the extrusion process, and melt and plasticize, extrude, cool, and pelletize to obtain polypropylene Composite materials; the twin-screw extruder used, the screw diameter is 40-65mm, the length-to-diameter ratio of the screw is 40:1, the mixing and melting temperature is set at 220°C-240°C for the...

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Abstract

The invention relates to the field of high polymer material processing, and discloses a modified PA6 / PA12 alloy material with low water absorption and a preparation method thereof. The alloy materialcomprises the following components in parts by weight: 50 to 65 parts of PA6 resin, 5 to 10 parts of PA12 resin, 3 to 10 parts of a flexibilizer, 0.1 to 1 part of lanthanum oxide, 25 to 35 parts of glass fiber, 0.1 to 0.5 part of an antioxidant and 0.1 to 0.5 part of a lubricating agent. The invention also discloses a preparation method of the modified PA6 / PA12 alloy material with low water absorption. The modification of the compound material is carried out on a compound toughening system and the lanthanum oxide while the alloy is compounded through PA6 and PA12, so that the water absorptionof the material is greatly reduced while the compound material reaches the performance of an existing PA6 product. The PA6 material with low water absorption has relatively low shrinking percentage, and the problem of dimensional shrinkage, generated by water absorption, of a nylon product is solved.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a modified PA6 / PA12 alloy material with low water absorption and a preparation method. Background technique [0002] The synthesis of polyamide is an important milestone in the development of polymer chemistry. The development of petrochemical industry and other industries provides abundant and cheap raw materials and a broad market for the development of nylon engineering plastics. Nylon is mainly used in the automobile industry, electrical and electronic industry, transportation industry, machinery manufacturing industry, wire and cable communication industry, film and daily necessities. Adding 30% glass fiber to PA6, the mechanical properties, dimensional stability, heat resistance, and aging resistance of PA6 are significantly improved, and the fatigue resistance is 2.5 times that of unreinforced, which greatly expands the application field of PA6 materials. [000...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L51/06C08K13/04C08K7/14C08K3/22C08K5/103C08J5/04
CPCC08J5/043C08J2377/02C08J2451/06C08J2477/02C08K2003/221C08K2201/003C08K2201/011C08L77/02C08L2205/025C08L2205/03C08L2205/06C08L2205/24C08L51/06C08K13/04C08K7/14C08K3/22C08K5/103
Inventor 陆龙威胡鑫斌郝刘佳王晓东施凌
Owner 横店集团得邦工程塑料有限公司
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