CN104650579A

CN104650579A - Composite type anti-friction nylon material and production process thereof

Info

Publication number: CN104650579A
Application number: CN201310580137.4A
Authority: CN
Inventors: 汤波
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-19
Filing date: 2013-11-19
Publication date: 2015-05-27

Abstract

The invention relates to a composite type anti-friction nylon material and a production process thereof, and is especially applicable to materials requiring improved mechanical strength, strong creep resistance, high friction coefficient, high strength, wear resistance and corrosion resistance. The composite material comprises nylon, copper oxide treated by silane coupling agent, alumina metal oxide and carbon fiber reinforcing agent. Nylon 1010 as a matrix is supplemented with copper oxide treated by silane coupling agent, alumina micron metal oxide and carbon fiber as reinforcing agent; and the materials are fully mixed and injected to form a nylon based composite. The composite has the advantages of large friction coefficient, high mechanical strength, good wear resistance and corrosion resistance, low cost, good performance price ratio, and wide practicability.

Description

-kind of compound anti-friction nylon material and manufacture craft

Technical field

The present invention relates to a kind of nylon material and manufacture craft, be specially-kind of compound anti-friction nylon material and manufacture craft, be specially adapted to that desired strength performance is good, creep resisting ability is strong, frictional coefficient is high, wear-resistant, corrosion resistant parts material.

Background technology

Polyamide resin (Polyamide, is abbreviated as PA, is commonly called as nylon) is widely used in the industrial sectors such as aerospace, chemical industry, machinery, building.Nylon is the high molecular polymer of semi-crystalline state, and its degree of crystallinity is than general high molecular polymer low anchor line (string) type unsymmetric molecule, and molecular chain is usually in flexing state.Owing to there is nitrogen, oxygen, hydrogen atom in molecule, thus easily hydrogen bond is formed between its molecular chain, the Van der Waals force caused by molecular chain and acid amides polar group and hydrogen bond force make its intermolecular reactive force very large and complicated, therefore nylon has much higher surface energy than general polymerization thing material, have larger adhesive power with another-material when contacting, frictional coefficient is also larger.In addition also to have intensity high, wear-resistant for nylon, the advantage such as corrosion-resistant.But pure sucking nylon water-based is comparatively strong, and creep resisting ability is poor, and this makes its mechanical property reduce, and dimensional stability is affected, and limits giving full play to of its premium properties to a certain extent.Improve material property for entering-walking, overcome the deficiency, people add various filler to strengthen its performance in pure nylon.Filler conventional is at present particles of inorganic material and each fibrid.Due to time prepared by matrix material by the guarantee etc. to raw-material selection, each component distribution design and processing condition, make stock blend material advantages complementary, thus the matrix material after strengthening can while reservation nylon premium properties, greatly improve its physical strength and creep resisting ability, present excellent over-all properties, thus expand the range of application of material.Research at present in filler Reinforced Nylon matrix material mainly concentrates in antifriction material, and as nylon parts such as gear, bearing, cams, the frictional coefficient needed during its work is less.But for the part such as friction wheel, brake facing, not only need material to have higher frictional coefficient, and also have higher requirement to the mechanical property, wear resisting property, heat-insulating property etc. of material.Polymkeric substance is due to the material structure of its uniqueness and mechanical property, these requirements can be met preferably, particularly when the elastic lag effect of polymkeric substance becomes the principal element of rolling friction pair resistance, the change of friction media can not cause too large impact to coefficient of rolling friction, and this is for needing larger frictional coefficient and requiring that the application scenario of less wear rate has special meaning.Therefore, the high performance enhancend friction type polymer composites of research preparation, not only can meet the demand of hi-tech development to material, and also have good development prospect in engineer applied.

Summary of the invention

The object of this invention is to provide-kind of frictional coefficient is high, intensity is high, wear-resistant, corrosion resistance nature is good-kind of compound anti-friction nylon material and manufacture craft.

Technical scheme of the present invention is :-kind of compound anti-friction nylon material, it with nylon 1010 be matrix, using through the cupric oxide Cu0 of silane coupling agent process and aluminum oxide AL203 metal oxide as additive, form using carbon fibrous body as toughener compound, described cupric oxide Cu0 and aluminum oxide AL203 is micro-sized metal oxide, and wherein the size range of cupric oxide Cu0 is 0.5 ~ 10um; The size range of aluminum oxide AL203 is 10 ~ 20pm; In the proportional amount of micro-sized metal oxide, the mass percent shared by cupric oxide Cu0 is 10% ~ 1686; Mass percent shared by aluminum oxide AL203 is: 1596 ~ 1796; Carbon fibrous body toughener is be placed in the PAN-based carbon fiber of air after oxide treatment, and the mass percent shared by PAN-based carbon fiber is 2% ~ 6%.

Its manufacture craft is as follows:

1. the cupric oxide Cu0 of selected globule size and aluminum oxide AL203 is added respectively mass percent be 1 ~ 1.5% silane coupling agent and mass percent be 350% acetone put into ultrasonator vibration 40 minutes;

2. the mixture after vibration is put into 40 ~ 80 DEG C of loft drier, takes out after acetone evaporated and grind and cross 250# sieve:

8. PAN-based carbon fiber is placed in air and carries out oxide treatment;

4. be that carbon fiber and the nylon 1010 of the aluminum oxide of 16% ~ 18%, the cupric oxide of 10% ~ 13% and 6% ~ l0% puts into ball mill batch mixing 8 ~ 10 hours simultaneously by mass percentage;

5. mixed matrix material is placed in injection moulding machine after heat fused, is injected into the injection pressure of 80 ~ 90MPa in the mould being heated to 70 ~ 90 DEG C at 220 ~ 240 DEG C of temperature and makes desired product;

6. the product after injection moulding is placed in and dryly makes an uproar in case, at 90 ~ 110 DEG C of temperature, be incubated 3-6 hours, eliminate product internal stress.

Product made by the present invention, is specially adapted to require raising physical strength and the workpiece material that creep resisting ability is strong, frictional coefficient is high, wear-resistant, corrosion resistance nature is good.Adopt by nylon 1010, through the cupric oxide Cu0 of silane coupling agent process and aluminum oxide AL203, the matrix material of metal oxide and carbon fibrous body toughener composition, take nylon 1010 as matrix, add in nylon 1010 matrix through the cupric oxide Cu0 of silane coupling agent process, aluminum oxide AL203 micro-sized metal oxide and PAN base carbon fibre body as toughener, after abundant mixing, injection moulding forms nylon based composites, its friction coefficient of composite material is large ,-as can reach about 1 in situation; Matrix material machinery intensity is high, wear-resistant, corrosion resistance nature is good; Matrix material cost is low, has the good ratio of performance to price, and has practicality widely.

Embodiment

The present invention-kind of compound anti-friction nylon material, it with nylon 1010 be matrix, using through the cupric oxide Cu0 of silane coupling agent process and aluminum oxide AL203 metal oxide as additive, form using carbon fibrous body as toughener compound, described cupric oxide Cu0 and aluminum oxide AL203 is micro-sized metal oxide, and wherein the size range of cupric oxide Cu0 is 0.5 ~ 10um; The size range of aluminum oxide AL203 is 10 ~ 20pm; In the proportional amount of micro-sized metal oxide, the mass percent shared by cupric oxide Cu0 is 10% ~ 1686; Mass percent shared by aluminum oxide AL203 is: 1596 ~ 1796; Carbon fibrous body toughener is be placed in the PAN-based carbon fiber of air after oxide treatment, and the mass percent shared by PAN-based carbon fiber is 2% ~ 6%.

When making product, the cupric oxide Cu0 of selected globule size and aluminum oxide AL203 add respectively mass percent be 1 ~ 1.5% silane coupling agent and mass percent be 350% acetone put into ultrasonator vibration 40 minutes; Mixture after vibration is put into 40 ~ 80 DEG C of loft drier, takes out after acetone evaporated and grind and cross 250# sieve: PAN-based carbon fiber is placed in air and carries out oxide treatment; Be that carbon fiber and the nylon 1010 of the aluminum oxide of 16% ~ 18%, the cupric oxide of 10% ~ 13% and 6% ~ l0% puts into ball mill batch mixing 8 ~ 10 hours simultaneously by mass percentage; Mixed matrix material is placed in injection moulding machine after heat fused, is injected into the injection pressure of 80 ~ 90MPa in the mould being heated to 70 ~ 90 DEG C at 220 ~ 240 DEG C of temperature and makes desired product; Product after injection moulding is placed in and dryly makes an uproar in case, at 90 ~ 110 DEG C of temperature, be incubated 3-6 hours, eliminate product internal stress, thus obtain the finished product.

Claims

1.-kind of compound anti-friction nylon material, it with nylon 1010 be matrix, using through the cupric oxide Cu0 of silane coupling agent process and aluminum oxide AL203 metal oxide as additive, form using carbon fibrous body as toughener compound, it is characterized in that:

Described cupric oxide Cu0 and aluminum oxide AL203 is micro-sized metal oxide, and wherein the size range of cupric oxide Cu0 is 0.5 ~ 10um; The size range of aluminum oxide AL203 is 10 ~ 20pm; In the proportional amount of micro-sized metal oxide, the mass percent shared by cupric oxide Cu0 is 10% ~ 1686; Mass percent shared by aluminum oxide AL203 is: 1596 ~ 1796; Carbon fibrous body toughener is be placed in the PAN-based carbon fiber of air after oxide treatment, and the mass percent shared by PAN-based carbon fiber is 2% ~ 6%.

2. according to claim 1-kind of compound anti-friction nylon material, its manufacture craft is:

2. the mixture after vibration is put into 40 ~ 80 DEG C of loft drier, take out after acetone evaporated and grind and cross 250# sieve;

8. PAN-based carbon fiber is placed in air and carries out oxide treatment;