CN104788860A

CN104788860A - Composite material for bearing wear plate and center plate wear plate of wagon and preparation method

Info

Publication number: CN104788860A
Application number: CN201510183883.9A
Authority: CN
Inventors: 丁雷; 吴战波; 刘春岐; 谭飞
Original assignee: ZHENJIANG TIEKE RUBBER PRODUCTS Ltd
Current assignee: River Cycadaceae new material limited company
Priority date: 2015-04-20
Filing date: 2015-04-20
Publication date: 2015-07-22
Anticipated expiration: 2035-04-20
Also published as: CN104788860B

Abstract

The invention relates to a composite material for a bearing wear plate and a center plate wear plate of a wagon and a preparation method. The composite material is prepared from the following constituents by mass percent: 10-60% of nylon 66 fiber, 30-90% of polyvinylidene fluoride, 0-20% of an anti-friction compound, 0-10% of a fire retardant, 0-30% of a filler, and 0-5% of a pigment. The composite material is good in wear-resisting property, prolongs the service life, and lowers the cost.

Description

Goods train side bearing wear plate and cartridge abrasion disc matrix material and preparation method

Technical field

The present invention relates to a kind of matrix material, be specifically related to a kind of goods train side bearing wear plate and cartridge abrasion disc matrix material and preparation method.

Background technology

Existing goods train side bearing wear plate and cartridge abrasion disc are nylon material, and it is larger by envrionment temperature, humidity effect; Temperature is high, high humidity time, nylon material side bearing wear plate and cartridge abrasion disc expand, intensity reduces, frictional coefficient increases, and easily deform situation; When temperature is low, humidity is low, nylon material side bearing wear plate and cartridge abrasion disc toughness reduce, frictional coefficient reduces, and easily breakage occur; Practical situation are that vehicle is often crossed over larger dimension or run to the region of another varying environment from a region in very short time, therefore easily cause the above results, and its work-ing life is low, the replacing frequency is high, and traffic safety also exists hidden danger.

Therefore, how to take into account temperature, the overall use properties of humidity side bearing wear plate and cartridge abrasion disc when changing greatly, effective effect can be played, improve work-ing life, reduce and change the frequency, become the technical problem that those skilled in the art are urgently to be resolved hurrily.

Summary of the invention

The object of the invention is to overcome defect of the prior art, there is provided a kind of can cross over larger dimension and varying environment region goods train side bearing wear plate and cartridge abrasion disc matrix material and preparation method, use properties is stablized, and wear resisting property is good, increase work-ing life, cost-saving.

The present invention is achieved by the following technical programs.

Goods train side bearing wear plate and cartridge abrasion disc matrix material, its moiety is as follows by mass percentage:

Nylon 66 fiber 10-60%

Polyvinylidene difluoride (PVDF) 30-90%

Anti-friction composition 0-20%

Fire retardant 0-10%

Weighting material 0-30%

Pigment 0-5%;

Described anti-friction composition is the mixture of one or more in tetrafluoroethylene, graphite or molybdenumdisulphide; Described fire retardant is the one of antimonous oxide, aluminium hydroxide, silicon-dioxide; Described weighting material is the mixture of one or more in wollastonite, kaolin, chromite powder, titanium dioxide; Described pigment is mineral dye.

Above-mentioned goods train side bearing wear plate and cartridge abrasion disc matrix material, wherein, described nylon 66 fiber is floss, and specification is the 12-15 dawn.

Above-mentioned goods train side bearing wear plate and cartridge abrasion disc matrix material, wherein, the specification of described polyvinylidene difluoride (PVDF) is 60-200 order.

The preparation method of above-mentioned goods train side bearing wear plate and cartridge abrasion disc matrix material, wherein, described preparation method is as follows:

(1) join high speed fly cutter stirrer for mixing after above-mentioned each component being taken by mass percentage even, obtain mixture;

(2) by the mixture obtained in step (1) according to target product weight spread in the mould of injection press, injection press matched moulds suppress, crystalline forming, injection press patrix temperature is 170 ~ 210 DEG C, and counterdie temperature is 180 ~ 220 DEG C, molding time 40-60min;

(3) the moulded products anneal 8-15 hour in the environment of 150 DEG C will obtained in step (2), final finished.

Beneficial effect of the present invention is:

Goods train side bearing wear plate provided by the invention and cartridge abrasion disc matrix material, can take into account temperature, the overall use properties of humidity product when changing greatly, and increases the service life, reduce and change the frequency, improve traffic safety.

Embodiment

Below by way of specific embodiment, the specific embodiment of the present invention is described in further detail.

Embodiment one

The preparation method of goods train side bearing wear plate and cartridge abrasion disc matrix material, wherein, described preparation method is as follows:

(1) take nylon 66 fiber that 20% specification was 12 dawn by mass percentage, 70% specification is 120 object polyvinylidene difluoride (PVDF), the graphite of 7%, the aluminium hydroxide of 3%, join in high speed fly cutter stirrer and stir 20 minutes, fully disperse, obtain mixture;

(2) by the mixture obtained in step (1) by spreading in the mould of injection press, injection press matched moulds suppress, crystalline forming, the demoulding obtain black products, injection press patrix temperature is 180 DEG C, and counterdie temperature is 190 DEG C, molding time 40min;

(3) by the black products that obtains in step (2) anneal 10 hours in the environment of 150 DEG C, final finished.

Embodiment two

(1) take nylon 66 fiber that 37% specification was 12 dawn by mass percentage, 50% specification be 150 object polyvinylidene difluoride (PVDF), aluminium hydroxide, the titanium dioxide of 5%, the red iron oxide 130 of 3% of 5%, join in high speed fly cutter stirrer and stir 25 minutes, abundant dispersion, obtains mixture;

(2) by the mixture obtained in step (1) by spreading in the mould of injection press, injection press matched moulds suppress, crystalline forming, the demoulding obtains red goods, and injection press patrix temperature is 185 DEG C, and counterdie temperature is 195 DEG C, molding time 60min;

(3) by the red goods that obtain in step (2) anneal 10 hours in the environment of 150 DEG C, final finished.

Embodiment three

(1) take nylon 66 fiber that 50% specification was 12 dawn by mass percentage, 35% specification be 120 object polyvinylidene difluoride (PVDF), aluminium hydroxide, the kaolin of 5%, the titanium dioxide of 5% of 5%, join in high speed fly cutter stirrer and stir 30 minutes, abundant dispersion, obtains mixture;

(2) by the mixture obtained in step (1) by spreading in the mould of injection press, injection press matched moulds is suppressed, crystalline forming, and the demoulding obtains the yellow goods of Bai Zhongwei, and injection press patrix temperature is 180 DEG C, and counterdie temperature is 190 DEG C, molding time 55min;

(3) by yellow for the Bai Zhongwei that obtains in step (2) goods anneal 10 hours in the environment of 150 DEG C, final finished.

Now detect each performance index of the finished product that embodiment one, embodiment two and embodiment three obtains, detected result is as follows:

Performance index	Embodiment one	Embodiment two	Embodiment three
				Density	1.65	1.63	1.59
Tensile strength Mpa	62	95	81
				Ultimate compression strength Mpa	144	182	157
Shock strength KJ/m ²	60	95	70
				Shearing resistance Mpa	25	41	34
Thermal expansivity 10 ^-6/℃	35	49	60
				Frictional coefficient	0.15	0.29	0.4
The highest sustained service temperature DEG C	120	120	120
				The highest discontinuous operation temperature DEG C	170	170	170
Flame retardant rating	94V-1	94V-1	94V-1

Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments, and therefore, the present invention is not by the restriction of the present embodiment, and the technical scheme that any employing equivalence replacement obtains is all in the scope of protection of the invention.

Claims

1. goods train side bearing wear plate and cartridge abrasion disc matrix material, it is characterized by, its moiety is as follows by mass percentage:

Nylon 66 fiber 10-60%

Polyvinylidene difluoride (PVDF) 30-90%

Anti-friction composition 0-20%

Fire retardant 0-10%

Weighting material 0-30%

Pigment 0-5%;

2. goods train side bearing wear plate as claimed in claim 1 and cartridge abrasion disc matrix material, it is characterized by, described nylon 66 fiber is floss, and specification is the 12-15 dawn.

3. goods train side bearing wear plate as claimed in claim 1 and cartridge abrasion disc matrix material, it is characterized by, the specification of described polyvinylidene difluoride (PVDF) is 60-200 order.

4. the preparation method of goods train side bearing wear plate as claimed in claim 1 and cartridge abrasion disc matrix material, it is characterized by, described preparation method is as follows: