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PA/PE blend alloy with low water absorption and high dimensional stability and preparation method thereof

A technology with dimensional stability and low water absorption, applied in the field of polymer materials, can solve the problems of PA/PE alloy water absorption and dimensional stability improvement

Active Publication Date: 2020-08-18
宁波坚锋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above patents only improved the mechanical properties, wear resistance, etc. of the material and reduced the cost, but did not improve the water absorption and dimensional stability of the PA / PE alloy.

Method used

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  • PA/PE blend alloy with low water absorption and high dimensional stability and preparation method thereof
  • PA/PE blend alloy with low water absorption and high dimensional stability and preparation method thereof
  • PA/PE blend alloy with low water absorption and high dimensional stability and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The PA / PE blended gold of this embodiment is formed from the following components by weight: 70 parts of PA6, 30 parts of LDPE, 5 parts of SBS-g-MAH, and 0.5 parts of surface-modified nano-Al 2 O 3 , 0.3 part of 1,3-PBO, 0.1 part of PMDA, 0.1 part of antioxidant 1098 and 0.1 part of antioxidant 626, 0.2 part of N,N'-ethylene bis-stearamide.

[0044] Surface Modified Nano-Al 2 O 3 Prepared by the following steps: nano-Al with a particle size range of 30-60nm 2 O 3Add to ethanol solution (80% v / v), ultrasonically treat for 30min; adjust the pH of the mixture to 4.0, add KH-550, stir at high speed for 15min, then heat up to 80°C, react at constant temperature for 30min, centrifuge, wash, and dry to obtain amino Modified Nano-Al 2 O 3 . It has been determined that the amino-modified nano-Al 2 O 3 The grafting rate is 8%.

[0045] 70 parts of PA6, 30 parts of LDPE, 5 parts of SBS-g-MAH, 0.5 parts of surface modified nano-Al 2 O 3 , 0.3 part of 1,3-PBO, 0.1 part o...

Embodiment 2

[0047] The difference between Example 2 and Example 1 is only that: Example 2 uses HDPE instead of LDPE, and other aspects are the same as Example 1.

Embodiment 3

[0049] The only difference between Example 3 and Example 2 is: Example 3 adds 0.3 parts of surface-modified nano-Al 2 O 3 , and others are the same as in Example 2.

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Abstract

The PA / PE blended alloy is prepared from components in parts by weight; the preparation method comprises the following steps: uniformly stirring and mixing aliphatic polyamide, polyethylene, a compatilizer, surface modified nano Al2O3, an oxazoline-based chain extender, pyromellitic dianhydride, an antioxidant and a lubricant; adding the mixture into a screw extruder, carrying out melt blending, and granulating to obtain blended alloy granules. A material prepared from the PA / PE alloy has relatively low water absorption and good dimensional stability, and the application field of PA can be greatly expanded.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a PA / PE blended gold with low water absorption rate and high dimensional stability and a preparation method thereof. Background technique [0002] Polyamide (nylon, PA) is a high molecular polymer containing amide bonds in the molecular chain. It can be divided into PA6, PA66, PA46, PA11, PA1010, etc. according to the different molecular structures. Among them, the one with the largest output and the most widely used is PA6. PA6 has the advantages of high mechanical strength, good toughness, good wear resistance, oil resistance, chemical resistance and self-lubrication, and easy processing. It is widely used in auto parts, mechanical parts, electronic appliances, engineering accessories, daily necessities and packaging. Films, etc. However, PA6 has high water absorption, poor dimensional stability and low notched impact strength. In order to ensure that the size of nyl...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L23/06C08L51/00C08K13/06C08K9/06C08K3/22C08K5/353C08K5/1539C08K5/20C08K5/134C08K5/526C08K5/527
CPCC08L77/02C08K2003/2227C08K2201/011C08L2207/062C08L2207/066C08L2205/03C08L2205/08C08L23/06C08L51/006C08K13/06C08K9/06C08K3/22C08K5/353C08K5/1539C08K5/20C08K5/1345C08K5/526C08K5/527
Inventor 徐禄波吴剑波王旭范方虹文正健徐晔蒋祥鸳
Owner 宁波坚锋新材料有限公司
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