CN103242651A

CN103242651A - Reinforced and modified PA (Polyamide)6 composite material

Info

Publication number: CN103242651A
Application number: CN2013101890222A
Authority: CN
Inventors: 任俊
Original assignee: SUZHOU SUNWAY POLYMER CO Ltd
Current assignee: SUZHOU SUNWAY POLYMER CO Ltd
Priority date: 2013-05-21
Filing date: 2013-05-21
Publication date: 2013-08-14

Abstract

The invention relates to engineering plastic and in particular relates to a reinforced and modified PA (Polyamide)6 composite material. The reinforced and modified PA6 composite material comprises the following components in parts by weight: 55-75 parts of PA6, 8-14 parts of glass fiber, 3-7 parts of MgO, 2-5 parts of dispersing agent, 1-2 parts of cross-linking agent and 0.1-0.5 part of antioxidant. The glass fiber adopted by the reinforced and modified PA6 composite material can be used for reinforcing the effect of the PA6, the MgO can be used for improving thermal deformation resistance capability of the PA6 to keep good dimension stability; and meanwhile, due to the lubricating and reinforcing effects of the nanometer particles. the wear resistance of the PA6 can be remarkably improved. The reinforced and modified PA6 composite material can be used for solving the problem that the PA6 in the prior art has defects in mechanical strength and wear resistance.

Description

A kind of enhancing modified PA6 matrix material

Technical field

The present invention relates to a kind of engineering plastics, particularly a kind of enhancing modified PA6 matrix material.

Background technology

Polymeric amide (PA is commonly called as nylon) is with a long history, broad-spectrum general engineering plastic, has good comprehensive performances, comprise mechanical property, thermotolerance, wearability, chemical proofing and self lubricity, and frictional coefficient is low, and certain flame retardant resistance is arranged, and is easy to processing.PA's is various in style, and PA6, PA66, PA46, PA610, PA612, PAl2 etc. are arranged, and a lot of new variety such as the semi-aromatic nylon of exploitation in recent years and extraordinary nylon.Because the chemical structure difference of various nylon, its performance is also variant, for PA6, with kinds such as PA46, PAl2 than having very strong price advantage, but can't satisfy the requirement that relevant industries develop aspect physical strength, the wear resisting property.In the prior art, the method that improves the nylon wear resistance is heavily to add anti-wear agent at nylon, but the interpolation of anti-wear agent can reduce the wilfulness of nylon, and flowability is also relatively poor.Therefore, develop a kind of physical strength height, PA6 material that wear resisting property is good is necessary.

Summary of the invention

The object of the present invention is to provide a kind of enhancing modified PA6 matrix material, have the problem of defective with PA6 physical strength, wear resisting property aspect in the solution prior art.Technical scheme is as follows:

A kind of enhancing modified PA6 matrix material, composed of the following components with the weight part number scale:

PA6 55-75 part

Glass fibre 8-14 part

MgO 3-7 part

Dispersion agent 2-5 part

Linking agent 1-2 part

Oxidation inhibitor 0.1-0.5 part

Described glass fibre and described MgO are through coupling agent treatment.

Described coupling agent is silane coupling agent or titanate coupling agent.

The particle diameter of described MgO is 2-5nm.

Described dispersion agent is polyvinylpyrrolidone, polyacrylamide, polyoxyethylene or polyvinyl alcohol.

Described linking agent is dicumyl peroxide, ditertiary butyl peroxide, 2,5-dimethyl-2,5 tert-butyl hydroperoxide hexane or Phthalic acid, diallyl ester.

Described oxidation inhibitor is four (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester, β-(4-hydroxy phenyl-3, the 5-di-t-butyl) the positive octadecanol ester of propionic acid, 2,6 ditertiary butyl p cresol or 4,4 '-thiobis (the 6-tertiary butyl-3-(methyl) phenol).

The glass fibre that the present invention adopts can play the effect that strengthens PA6, and MgO can improve the heat-resistant deforming ability of PA6, keeps dimensional stability preferably, simultaneously lubricated the and enhancement of nanoparticle make PA6 wear resisting property be improved significantly.The physical strength of the compound use material of glass fibre and MgO and wear resisting property improve obviously.The adding of dispersion agent can make nano-MgO be easy to disperse, and reduces agglomeration, and then reduces usage quantity.The use of linking agent not only makes PA6, glass fibre and MgO promote consistency, and can remedy the part mechanical property because of the interpolation PA6 loss of glass fibre and MgO.

Specific embodiment

In order better to understand and to implement, describe a kind of enhancing modified PA6 matrix material of the present invention in detail below in conjunction with embodiment.

Embodiment 1

With 55 parts of PA6,8 parts in glass fibre, 3 parts of MgO, 2 parts of polyethylene of dispersing agent pyrrolidone, 1 part of linking agent dicumyl peroxide, oxidation inhibitor four (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester is pre-mixed in high-speed mixer for 0.1 part, extrude cooling granulation then by the parallel double-screw mixing extruder.

Embodiment 2

With 65 parts of PA6,10 parts in glass fibre, 4 parts of MgO, 3 parts of dispersion agent polyacrylamides, 1 part of linking agent ditertiary butyl peroxide, oxidation inhibitor β-(4-hydroxy phenyl-3, the 5-di-t-butyl) the positive octadecanol ester of propionic acid is pre-mixed in high-speed mixer for 0.2 part, extrude cooling granulation then by the parallel double-screw mixing extruder.

Embodiment 3

With 70 parts of PA6,12 parts in glass fibre, 6 parts of MgO, 4 parts of dispersion agent polyoxyethylenes, linking agent 2,5-dimethyl-2,2 parts of 5 tert-butyl hydroperoxide hexanes, oxidation inhibitor 2, the 6-ditertbutylparacresol is pre-mixed in high-speed mixer for 0.4 part, extrude cooling granulation then by the parallel double-screw mixing extruder.

Embodiment 4

With 75 parts of PA6,14 parts in glass fibre, 7 parts of MgO, 5 parts of polyethylene of dispersing agent alcohol, 2 parts of linking agent Phthalic acid, diallyl esters, oxidation inhibitor 4,4 '-thiobis (the 6-tertiary butyl-3-(methyl) phenol) 0.5 part in high-speed mixer, be pre-mixed, extrude cooling granulation then by the parallel double-screw mixing extruder.

Test previous embodiment 1-4 products obtained therefrom obtains result as shown in table 1.Wherein the Izod shock strength is pressed the ISO-180 standard testing; Tensile strength is pressed the ISO-527 standard testing, and draw speed is 50mm/min; Frictional coefficient is pressed the ISO10545-17 standard testing.

Table 1

The above only is preferred embodiment of the present invention, does not limit the present invention, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.

Claims

1. an enhancing modified PA6 matrix material is characterized in that, and is composed of the following components in parts by weight:

PA6 55-75 part;

Glass fibre 8-14 part;

MgO 3-7 part;

Dispersion agent 2-5 part;

Linking agent 1-2 part;

Oxidation inhibitor 0.1-0.5 part.

2. a kind of enhancing modified PA6 matrix material according to claim 1 is characterized in that, described glass fibre and described MgO are through coupling agent treatment.

3. a kind of enhancing modified PA6 matrix material according to claim 2 is characterized in that, described coupling agent is silane coupling agent or titanate coupling agent.

4. a kind of enhancing modified PA6 matrix material according to claim 1 is characterized in that, the particle diameter of described MgO is 2-5nm.

5. a kind of enhancing modified PA6 matrix material according to claim 1 is characterized in that, described dispersion agent is polyvinylpyrrolidone, polyacrylamide, polyoxyethylene or polyvinyl alcohol.

6. a kind of enhancing modified PA6 matrix material according to claim 1 is characterized in that, described linking agent is dicumyl peroxide, ditertiary butyl peroxide, 2,5-dimethyl-2,5 tert-butyl hydroperoxide hexane or Phthalic acid, diallyl ester.

7. a kind of enhancing modified PA6 matrix material according to claim 1, it is characterized in that, described oxidation inhibitor is four (β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid) pentaerythritol ester, β-(4-hydroxy phenyl-3, the 5-di-t-butyl) the positive octadecanol ester of propionic acid, 2,6-ditertbutylparacresol or 4,4'-thiobis (the 6-tertiary butyl-3-(methyl) phenol).