CN104455126A - Automobile disc sheet and preparing method thereof - Google Patents
Automobile disc sheet and preparing method thereof Download PDFInfo
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- CN104455126A CN104455126A CN201410501077.7A CN201410501077A CN104455126A CN 104455126 A CN104455126 A CN 104455126A CN 201410501077 A CN201410501077 A CN 201410501077A CN 104455126 A CN104455126 A CN 104455126A
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Abstract
The invention discloses an automobile disc sheet and a preparing method thereof. PF, aluminum oxide, asbestos, hexamethylenetetramine, graphite, 2,2'-(1,3-phenyl group) bisoxazoline, antioxygen, potassium titanate whisker, nitrile rubber, ABS, a coupling agent, SMA, copper powder, GF and barium sulfate are weighed according to weight parts and are evenly mixed, then extruding and granulating are carried out, die pressing forming is achieved, and the thermal treatment is carried out. The ignition temperature of the disc sheet ranges from 620 DEG C to 680 DEG C, and the ignition temperature of ordinary phenolic resin only ranges from 480 DEG C to 520 DEG C. When the humidity is 20 percent, the abrasion loss is 0.3-0.5 micron per time, and when the humidity is 60 percent, the abrasion loss is 0.1-0.4 micron per time. The impact strength is 8-12 Kj/m<2>, and the compression strength is 90-110 MPa. The Brinell hardness ranges from 400 to 440, and the oil absorption rate ranges from 0.005 percent to 0.01 percent.
Description
Technical field
The application belongs to automobile disc type sheet preparation process field, particularly relates to a kind of heat-resisting, wear-resisting automobile disc type sheet and preparation method thereof.
Background technique
Automobile disc type sheet is also called disc brake, as the term suggests be get its shape and gain the name.It is by hydraulic control, and main parts size has brake disc, wheel cylinder, brake calipers, oil pipe etc.Alloy steel for braking discs manufacture is also fixed on wheel, with vehicle wheel rotation.The base plate that wheel cylinder is fixed on break maintains static, ' two friction plates on dynamic pincers are contained in the both sides of brake disc to system respectively, the hydraulic pressure that the piston of wheel cylinder transports by oil pipe, promote friction plate and press to brake disc generation friction catch, it just looks like the plate vised with pliers in rotation that action is got up, and forces it to stop the same.Disk type braker rapid heat dissipation, lightweight, simple structure, easy to adjust.Particularly during high capacity, resistance to high temperature is good, and braking effect is stablized, and is not afraid of muddy water invasion and attack, and in the winter time with severe road conditions down train, disc type brake in the short period of time make car easier than drum brake stops.The brake disc of some disk type braker is also opened many apertures, to accelerate ventilation and heat and to improve retardation efficiency.Ventilated disc (Vented Disc), as the term suggests have ventilative effect, the centrifugal force referring to automobile generation in the middle of travelling can make cross-ventilation, and reach the object of heat radiation, this is determined by the special tectonic of disc type video disc.From appearance, it is circumferentially having many hole skies leading to the center of circle, and these hole skies form through a kind of special process (slotteded & drilled) manufacture, therefore better than ordinary disc-type radiating effect.Due to the relation of manufacturing process and cost, in general intermediate car, generally adopt the braking plate of front venting plate, rear common disk.As Passat, Vento Golf2.0, Corrado waits for bus, and partial higher car adopts cross ventilation dish.And economy car adopts Drum brake linings (brake block) after shroud, shroud here mostly, generally also just common disk but not venting plate.It is worth mentioning that, use venting plate progressively replacing at front-wheel and use solid disc.Disc brake pad (dish) is divided into ordinary disc-type and ventilated disc.Ordinary disc-type we compare easy understand, plainly, be exactly solid.As the term suggests have ventilative effect, the centrifugal force referring to automobile generation in the middle of exercising can make cross-ventilation, and reach the object of heat radiation, this is determined by the special tectonic of disc type video disc.From appearance, it is circumferentially having many hole skies leading to the center of circle, and these hole skies form through a kind of special process (slotteded & drilled) manufacture, therefore better than ordinary disc-type radiating effect.Due to the relation of manufacturing process and cost, in general intermediate car, generally adopt the braking plate of front venting plate, rear common disk.Difference as P ventilation dish/dish-style/drum brake system: the assat that brake principle is different with active force, Vento Golf2.0, Corrado waits for bus, and partial higher car adopts cross ventilation dish.And economy car adopts Drum brake linings (brake block) after shroud, shroud here mostly, generally also just common disk but not venting plate.It is worth mentioning that, use venting plate progressively replacing at front-wheel and use solid disc.Drum brakes has the ironcasting of the similar tambourine of a shape, is called brake drum, and it and tire are fixed and synchronized rotation.Disk type brake has preferably reactive and stability, and thermal diffusivity is better, changes the advantages such as easy.The cost of drum brakes is lower, absolute brake Li Genggao, is more used in the trailing wheel of pony car.But its water rate is higher, therefore holistic cost is higher simultaneously.
Disc brake pad can be divided into disc type and ventilated disc to brake.Dish-style, disc type, as also have friction disk type be all attributable to disk type brake.Disk type brake has one to fix with tire and synchronizedly rotates to obtain circular disc, uses oil pressure to promote brake block clamping roudnel, produce frictional force is braked by contact during brake.Have preferably reactive and stability, thermal diffusivity, changes easy.But its water rate is higher, cost is also higher.In addition, the mode of action of disk type brake and the mode of braking of our Regular Bicycle almost one be connected band for wheel hub and obtain rubber brake dish and interact when braking, until wheel stops operating.The most important thing is, disk type brake can coordinate with ABS system easily, uses more on medium-to-high grade car; An easier service brake is dead and the cost of drum brakes is lower, absolute brake Li Genggao! More be used in now the trailing wheel of general pony car, namely drum after front dish in general! Brake block to be healed the difference of tightness in the sensitivity of brake: disc brake pad (dish) is divided into ordinary disc-type and ventilated disc.Ordinary disc-type we compare easy understand, plainly, be exactly solid.Ventilated disc (Vented Disc), as the term suggests have ventilative effect, the centrifugal force referring to automobile generation in the middle of exercising can make cross-ventilation, and reach the object of heat radiation, this is determined by the special tectonic of disc type video disc.From appearance, it is circumferentially having many hole skies leading to the center of circle, and these hole skies form through a kind of special process (slotteded & drilled) manufacture, therefore better than ordinary disc-type radiating effect.Due to the relation of manufacturing process and cost, in general intermediate car, generally adopt the braking plate of front venting plate, rear common disk.As Passat, Vento Golf2.0, Corrado waits for bus, and partial higher car adopts cross ventilation dish.And economy car adopts Drum brake linings (brake block) after shroud, shroud here mostly, generally also just common disk but not venting plate.It is worth mentioning that, use venting plate progressively replacing at front-wheel and use solid disc.The centrifugal force that vehicle produces in the middle of exercising can make cross-ventilation, and reach the object of heat radiation, this is determined by the special tectonic of disc type video disc.From appearance, it is circumferentially having many hole skies leading to the center of circle, and these hole skies form through a kind of special process manufacture, therefore better than ordinary disc-type radiating effect, but cost also wants more expensive, and general medium-to-high grade car just can adopt.Disk type brake, the brake block on clamp, the brake disc linked with wheel interact when braking, until wheel stops operating.Be divided into disc type, ventilated disc, dish-style, friction disk type.Disc type and ventilated disc can be divided into.Dish-style, ventilated disc, friction disk type are all attributable to disk type brake.The mode of action of disk type brake is similar to the mode of braking of ordinary bicycle-clamp on the brake disc that links of brake block and wheel interact when braking, until wheel stops operating.Venting plate is then punch on brake disc, utilizes the natural wind help heat radiation travelling and bring.Disk type brake can coordinate with ABS system easily, uses more on medium-to-high grade car.Except except application above automobile, disk type brake also has a wide range of applications in track transportation industry, as the braking system of EMU.Disk type brake thermal diffusivity is good compared with drum brakes, compares brake can not be caused to fail and make the phenomenon of brake failure when trampling brake continuously; Brake disc is minimum at the thermal expansion amount of through-thickness, and after being heated, the change of size do not make the to touch on the brake stroke of pedal increases; The reaction of disc brake system is quick, can do high-frequency brake, thus comparatively meet the demand of ABS system; Disk type brake does not have the friction of drum brakes to help gesture effect, and therefore the brake strength of left and right wheels is average; Because the drainage performance of brake disc is better, can reduce because water or silt cause bad situation of braking; Under compared with drum brakes, the simple structure of disk type brake, is easier to realize gap and automatically adjusts, and easily keep in repair.When exporting braking moment and being identical, little relative to drum brake of its size and quality.
Disk type braker is also called disc brake, as the term suggests be get its shape and gain the name.It is by hydraulic control, and main parts size has brake disc, wheel cylinder, brake calipers, oil pipe etc.Alloy steel for braking discs manufacture is also fixed on wheel, with vehicle wheel rotation.General nothing friction helps gesture effect, and thus brake efficiency is less by the impact of friction factor, and namely usefulness is more stable; After immersion, usefulness reduces less, and need only can recover normal through twice braking; When exporting braking moment and being identical, size and quality are general less; The thermal expansion amount of brake disc through-thickness is minimum, makes brake clearance obviously increase and cause brake-pedal travel excessive the thermal expansion that can not resemble brake drum; Be easier to realize gap automatically adjust, other maintenance reconditioning works are also easier.Better heat stability.Because the size of drag friction pad is not long, the area of its working surface is only 12% ~ 6% of brake disc area, therefore thermal diffusivity is better.Water stability is better.Because the unit pressure of brake shoe to dish is high, easily water is extruded, be also easy to get rid of after getting wet under the influence of centrifugal force simultaneously, add the wiping action of pad to dish, thus, after water outlet, only need can recover normal through first and second braking; Drum brake then needs can recover normal brake application usefulness through more than ten brakings.Braking moment and automobile move forward and backward to travel and have nothing to do.Under the condition exporting onesize braking moment, quality and the size of disk type braker are less than drum-type.The lining pad of disc type is more easily changed upon wear than the friction facing of drum-type, and structure is also comparatively simple, and maintenance easily.Gap between brake disc and lining pad little (0.05 ~ 0.15mm), this just shortens the operating time of oil cylinder piston, and makes the force transmission ratio of braking drive organ have the possibility of increase.The thermal expansion of brake disc will cause brake-pedal travel to lose as brake drum thermal expansion, and this also makes the design of gap automatic regulating device simplify.Phenolic resin, be called for short PF. phenolic resin, solid phenolic resin is yellow, transparent, amorphous cake mass, because being blush containing free phenol, the proportion average about 1.7 of entity, is soluble in alcohol, water insoluble, water, weak acid, weak caustic solution are stablized.The polycondensation under catalysts conditions by phenol and formaldehyde, through in and, washing and the resin made.Because selecting the difference of catalyzer, thermosetting property and thermoplasticity two class can be divided into.Phenolic resin has good acid resistance, mechanical property, resistance to heat, is widely used in the industries such as anticorrosion engineering, adhesive, flame retardant material, grinding wheel manufacture.Liquid phenolic resin is yellow, dark brown liquid, as: alkalescent phenol resin mainly does casting binder.CAS 9003-35-4 purposes: as the tackifying resin of chloroprene rubber adhesive agent, the vulcanzing agent etc. of butyl rubber.Upstream raw material: p-t-butyl phenol, formaldehyde downstream product: phenolaldehyde moulding compound, phenolaldehyde moulding compound (PF2C3-631), the granular injection molding composition of phenolic aldehyde (SP2501J), rosin modified phenolic resin (2118 type), PET phenol-formaldehyde resin modified, phenolic aldehyde asbestos Friction resistance plastic, phenolic aldehyde asbestos abrasion-resistant plastics (JL24-66), the acidproof plastics of phenolic aldehyde asbestos, phenolic glass fiber molding material, polyphenylene sulfide, phenolic foam plate (FD-20 type), phenolic fiberglass reinforced plastics, phenolic plastic bearing shell, conveyor carrying roller etc.
Chinese patent CN 102758870A discloses a kind of brake for cars friction facing and preparation method thereof, by the Bond of 10-20%; The reinforcing fiber of 20-40%; The increasing of 10-20% rubs agent; The oiling agent of 10-20% and the filler of 20-40%.Preparation method comprises step: 1) mixed by raw material, be placed in high speed mixer by mixture and stir and evenly mix; 2) material of mixing being placed in mould heats compressing; 3) shaping rear friction facing is incubated 16 ~ 20 hours at 140-180 DEG C; 4) milling that the friction facing of insulation sizing carries out outer arced surface, intrados and end face is cut make finished product with Drilling operation.The formula for raw stock of friction facing ensure that friction facing has stable frictional behaviour and restorability, and production technology is simple, convenient operation.And through test of many times, obtain molding temperature and the molding pressure of optimum range, ensure that the successful of die press technology for forming, but delivery temperature is low and wear extent is low; Chinese patent CN 1554694 discloses a kind of break rubber compounding and processing technology thereof, adopts the compositions such as synthesis rubber, vulcanzing agent, age resister, Active agent, tackifier, stearic acid, promoter, reinforcing agent, plasticizing agent.Rubber plasticate after with other fill a prescription carry out mixing, hot back mixing, shaping, sulfuration process after can obtain best material property and combine, thus meet the composite request of product usability, cost of production etc.The present invention has given prominence to the key points the very property etc. of the heat oxygen aging resistance stability of material, temperature tolerance, resistance to tightness and product, but impact strength and hardness low.And universal along with humanity concept, and the formation of novel harmonious society, designs that a kind of ignition temperature is high, wear-resisting, elongation at break is high and automobile disc type sheet that hardness is high and preparation method thereof is very important.
Summary of the invention
the technical problem solved:
The application, for above-mentioned technical problem, provides a kind of automobile disc type sheet and preparation method thereof, solve existing automobile disc type sheet ignition temperature low, wear away high, the technical problem such as elongation at break is low and hardness is low.
technological scheme:
A kind of automobile disc type sheet, the raw materials by weight portion proportioning of described automobile disc type sheet is as follows: PF100 part; Aluminium oxide 1-5 part; Asbestos 60-80 part; Hexamethylenetetramine 10-30 part; Graphite 5-25 part; 2,2 '-(1,3-phenylene) bisoxazoline 15-35 part; Antioxidant 0.5-2.5 part; Potassium titanate crystal whisker 25-45 part; Nitrile butadiene rubber 40-60 part; ABS is 20-40 part; Coupling agent 0.3-0.7 part; SMA is 30-50 part; Copper powder 30-50 part; GF10-30 part; Barium sulphate is 4.5-6.5 part.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described automobile disc type sheet is as follows: PF100 part; Aluminium oxide 2-4 part; Asbestos 65-75 part; Hexamethylenetetramine 15-25 part; Graphite 10-20 part; 2,2 '-(1,3-phenylene) bisoxazoline 20-30 part; Antioxidant 1-2 part; Potassium titanate crystal whisker 30-40 part; Nitrile butadiene rubber 45-55 part; ABS is 25-35 part; Coupling agent 0.4-0.6 part; SMA is 35-45 part; Copper powder 35-45 part; GF15-25 part; Barium sulphate is 5.2-5.8 part.
As a preferred technical solution of the present invention: the raw materials by weight portion proportioning of described automobile disc type sheet is as follows: PF100 part; 3 parts, aluminium oxide; 70 parts, asbestos; Hexamethylenetetramine 20 parts; 15 parts, graphite; 2,2 '-(1,3-phenylene) bisoxazoline 25 parts; 1.5 parts, antioxidant; Potassium titanate crystal whisker 35 parts; Nitrile butadiene rubber 50 parts; ABS is 30 parts; Coupling agent 0.5 part; SMA is 40 parts; Copper powder 40 parts; GF20 part; Barium sulphate is 5.5 parts.
As a preferred technical solution of the present invention: described antioxidant adopts antioxidant 1010 or irgasfos 168.
As a preferred technical solution of the present invention: described coupling agent adopts silane coupler or titanate coupling agent.
As a preferred technical solution of the present invention: the preparation method of described automobile disc type sheet, comprises the steps:
The first step: take PF, aluminium oxide, asbestos, hexamethylenetetramine, graphite, 2 according to parts by weight proportioning, 2 '-(1,3-phenylene) bisoxazoline, antioxidant, potassium titanate crystal whisker, nitrile butadiene rubber, ABS, coupling agent, SMA, copper powder, GF and barium sulphate;
Second step: PF, aluminium oxide, asbestos, hexamethylenetetramine and graphite are dropped in reactor and is heated to 70-90 DEG C, stir 10-30min, then add surplus stock, be warming up to 100-120 DEG C, stir 40-60min, be cooled to 30-40 DEG C;
3rd step: mixed material is dropped in extruder and extrudes, barrel temperature 220 DEG C, 225 DEG C, 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C and 250 DEG C;
4th step: compressing, molding pressure 45-55MPa, clamp time 4-8min, heat treatment temperature 20-30 DEG C, heat treatment time 4-6h.
As a preferred technical solution of the present invention: the extruder in described 3rd step is double screw extruder.
As a preferred technical solution of the present invention: the molding temperature in described 4th step is 150-155 DEG C.
beneficial effect:
A kind of automobile disc type sheet of the present invention and preparation method thereof adopts above technological scheme compared with prior art, and have following technique effect: 1, product ignition temperature 620-680 DEG C, the ignition temperature of phenolic resin is only 480-520 DEG C; 2, during humidity 20%, wear extent is 0.3-0.5 μm/secondary, and during humidity 60%, wear extent is 0.1-0.4 μm/secondary; 3, impact strength 8-12kJ/m
2, compression strength 90-110MPa; 4, Brinell hardness 400-440, oil absorbency 0.005%-0.01%, the widespread production not division of history into periods can replace current material.
Embodiment
embodiment 1:
PF100 part is taken according to parts by weight proportioning; 1 part, aluminium oxide; 60 parts, asbestos; Hexamethylenetetramine 10 parts; 5 parts, graphite; 2,2 '-(1,3-phenylene) bisoxazoline 15 parts; Irgasfos 168 is 0.5 part; Potassium titanate crystal whisker 25 parts; Nitrile butadiene rubber 40 parts; ABS is 20 parts; Silane coupler 0.3 part; SMA is 30 parts; Copper powder 30 parts; GF10 part; Barium sulphate is 4.5 parts.
PF, aluminium oxide, asbestos, hexamethylenetetramine and graphite are dropped in reactor and is heated to 70 DEG C, stir 10min, then add surplus stock, be warming up to 100 DEG C, stir 40min, be cooled to 30 DEG C.
Mixed material is dropped in double screw extruder and extrudes, barrel temperature 220 DEG C, 225 DEG C, 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C and 250 DEG C, compressing molding temperature 150 DEG C, molding pressure 45MPa, clamp time 4min, heat treatment temperature 20 DEG C, heat treatment time 4h.
Product ignition temperature 620 DEG C, the ignition temperature of phenolic resin is only 480 DEG C; During humidity 20%, wear extent is 0.5 μm/secondary, and during humidity 60%, wear extent is 0.4 μm/secondary; Impact strength 8kJ/m
2, compression strength 90MPa; Brinell hardness 400, oil absorbency 0.01%.
embodiment 2:
PF100 part is taken according to parts by weight proportioning; 5 parts, aluminium oxide; 80 parts, asbestos; Hexamethylenetetramine 30 parts; 25 parts, graphite; 2,2 '-(1,3-phenylene) bisoxazoline 35 parts; Irgasfos 168 is 2.5 parts; Potassium titanate crystal whisker 45 parts; Nitrile butadiene rubber 60 parts; ABS is 40 parts; Titanate coupling agent 0.7 part; SMA is 50 parts; Copper powder 50 parts; GF30 part; Barium sulphate is 6.5 parts.
PF, aluminium oxide, asbestos, hexamethylenetetramine and graphite are dropped in reactor and is heated to 90 DEG C, stir 30min, then add surplus stock, be warming up to 120 DEG C, stir 60min, be cooled to 40 DEG C.
Mixed material is dropped in double screw extruder and extrudes, barrel temperature 220 DEG C, 225 DEG C, 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C and 250 DEG C, compressing molding temperature 155 DEG C, molding pressure 55MPa, clamp time 8min, heat treatment temperature 30 DEG C, heat treatment time 6h.
Product ignition temperature 640 DEG C, the ignition temperature of phenolic resin is only 480 DEG C; During humidity 20%, wear extent is 0.45 μm/secondary, and during humidity 60%, wear extent is 0.3 μm/secondary; Impact strength 9kJ/m
2, compression strength 95MPa; Brinell hardness 410, oil absorbency 0.009%.
embodiment 3:
PF100 part is taken according to parts by weight proportioning; 2 parts, aluminium oxide; 65 parts, asbestos; Hexamethylenetetramine 15 parts; 10 parts, graphite; 2,2 '-(1,3-phenylene) bisoxazoline 20 parts; Antioxidant 1010 is 1 part; Potassium titanate crystal whisker 30 parts; Nitrile butadiene rubber 45 parts; ABS is 25 parts; Titanate coupling agent 0.4 part; SMA is 35 parts; Copper powder 35 parts; GF15 part; Barium sulphate is 5.2 parts.
PF, aluminium oxide, asbestos, hexamethylenetetramine and graphite are dropped in reactor and is heated to 75 DEG C, stir 15min, then add surplus stock, be warming up to 105 DEG C, stir 45min, be cooled to 33 DEG C.
Mixed material is dropped in double screw extruder and extrudes, barrel temperature 220 DEG C, 225 DEG C, 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C and 250 DEG C, compressing molding temperature 152 DEG C, molding pressure 46MPa, clamp time 5min, heat treatment temperature 22 DEG C, heat treatment time 4.5h.
Product ignition temperature 650 DEG C, the ignition temperature of phenolic resin is only 500 DEG C; During humidity 20%, wear extent is 0.4 μm/secondary, and during humidity 60%, wear extent is 0.2 μm/secondary; Impact strength 10kJ/m
2, compression strength 100MPa; Brinell hardness 420, oil absorbency 0.008%.
embodiment 4:
PF100 part is taken according to parts by weight proportioning; 4 parts, aluminium oxide; 75 parts, asbestos; Hexamethylenetetramine 25 parts; 20 parts, graphite; 2,2 '-(1,3-phenylene) bisoxazoline 30 parts; Antioxidant 1010 is 2 parts; Potassium titanate crystal whisker 40 parts; Nitrile butadiene rubber 55 parts; ABS is 35 parts; Silane coupler 0.6 part; SMA is 45 parts; Copper powder 45 parts; GF25 part; Barium sulphate is 5.8 parts.
PF, aluminium oxide, asbestos, hexamethylenetetramine and graphite are dropped in reactor and is heated to 85 DEG C, stir 25min, then add surplus stock, be warming up to 115 DEG C, stir 55min, be cooled to 38 DEG C.
Mixed material is dropped in double screw extruder and extrudes, barrel temperature 220 DEG C, 225 DEG C, 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C and 250 DEG C, compressing molding temperature 154 DEG C, molding pressure 50MPa, clamp time 7min, heat treatment temperature 28 DEG C, heat treatment time 5.5h.
Product ignition temperature 660 DEG C, the ignition temperature of phenolic resin is only 500 DEG C; During humidity 20%, wear extent is 0.35 μm/secondary, and during humidity 60%, wear extent is 0.2 μm/secondary; Impact strength 11kJ/m
2, compression strength 105MPa; Brinell hardness 430, oil absorbency 0.006%.
embodiment 5:
PF100 part is taken according to parts by weight proportioning; 3 parts, aluminium oxide; 70 parts, asbestos; Hexamethylenetetramine 20 parts; 15 parts, graphite; 2,2 '-(1,3-phenylene) bisoxazoline 25 parts; Antioxidant 1010 is 1.5 parts; Potassium titanate crystal whisker 35 parts; Nitrile butadiene rubber 50 parts; ABS is 30 parts; Silane coupler 0.5 part; SMA is 40 parts; Copper powder 40 parts; GF20 part; Barium sulphate is 5.5 parts.
PF, aluminium oxide, asbestos, hexamethylenetetramine and graphite are dropped in reactor and is heated to 80 DEG C, stir 20min, then add surplus stock, be warming up to 110 DEG C, stir 50min, be cooled to 35 DEG C.
Mixed material is dropped in double screw extruder and extrudes, barrel temperature 220 DEG C, 225 DEG C, 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C and 250 DEG C, compressing molding temperature 153 DEG C, molding pressure 50MPa, clamp time 6min, heat treatment temperature 25 DEG C, heat treatment time 5h.
Product ignition temperature 680 DEG C, the ignition temperature of phenolic resin is only 520 DEG C; During humidity 20%, wear extent is 0.3 μm/secondary, and during humidity 60%, wear extent is 0.1 μm/secondary; Impact strength 12kJ/m
2, compression strength 110MPa; Brinell hardness 440, oil absorbency 0.005%.
Composition all components in above embodiment all can business be bought.
Above-described embodiment is just for setting forth content of the present invention, instead of restriction, and any change therefore in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.
Claims (8)
1. an automobile disc type sheet, is characterized in that the raw materials by weight portion proportioning of described automobile disc type sheet is as follows: PF100 part; Aluminium oxide 1-5 part; Asbestos 60-80 part; Hexamethylenetetramine 10-30 part; Graphite 5-25 part; 2,2 '-(1,3-phenylene) bisoxazoline 15-35 part; Antioxidant 0.5-2.5 part; Potassium titanate crystal whisker 25-45 part; Nitrile butadiene rubber 40-60 part; ABS is 20-40 part; Coupling agent 0.3-0.7 part; SMA is 30-50 part; Copper powder 30-50 part; GF10-30 part; Barium sulphate is 4.5-6.5 part.
2. a kind of automobile disc type sheet according to claim 1, proportioning is as follows by weight: PF100 part to it is characterized in that described automobile disc type tablet raw material; Aluminium oxide 2-4 part; Asbestos 65-75 part; Hexamethylenetetramine 15-25 part; Graphite 10-20 part; 2,2 '-(1,3-phenylene) bisoxazoline 20-30 part; Antioxidant 1-2 part; Potassium titanate crystal whisker 30-40 part; Nitrile butadiene rubber 45-55 part; ABS is 25-35 part; Coupling agent 0.4-0.6 part; SMA is 35-45 part; Copper powder 35-45 part; GF15-25 part; Barium sulphate is 5.2-5.8 part.
3. a kind of automobile disc type sheet according to claim 1, is characterized in that the raw materials by weight portion proportioning of described automobile disc type sheet is as follows: PF100 part; 3 parts, aluminium oxide; 70 parts, asbestos; Hexamethylenetetramine 20 parts; 15 parts, graphite; 2,2 '-(1,3-phenylene) bisoxazoline 25 parts; 1.5 parts, antioxidant; Potassium titanate crystal whisker 35 parts; Nitrile butadiene rubber 50 parts; ABS is 30 parts; Coupling agent 0.5 part; SMA is 40 parts; Copper powder 40 parts; GF20 part; Barium sulphate is 5.5 parts.
4. a kind of automobile disc type sheet according to claim 1, is characterized in that: described antioxidant adopts antioxidant 1010 or irgasfos 168.
5. a kind of automobile disc type sheet according to claim 1, is characterized in that: described coupling agent adopts silane coupler or titanate coupling agent.
6. the preparation method for disc type sheet of automobile described in claim 1, is characterized in that, comprise the steps:
The first step: take PF, aluminium oxide, asbestos, hexamethylenetetramine, graphite, 2 according to parts by weight proportioning, 2 '-(1,3-phenylene) bisoxazoline, antioxidant, potassium titanate crystal whisker, nitrile butadiene rubber, ABS, coupling agent, SMA, copper powder, GF and barium sulphate;
Second step: PF, aluminium oxide, asbestos, hexamethylenetetramine and graphite are dropped in reactor and is heated to 70-90 DEG C, stir 10-30min, then add surplus stock, be warming up to 100-120 DEG C, stir 40-60min, be cooled to 30-40 DEG C;
3rd step: mixed material is dropped in extruder and extrudes, barrel temperature 220 DEG C, 225 DEG C, 230 DEG C, 235 DEG C, 240 DEG C, 245 DEG C and 250 DEG C;
4th step: compressing, molding pressure 45-55MPa, clamp time 4-8min, heat treatment temperature 20-30 DEG C, heat treatment time 4-6h.
7. the preparation method of automobile disc type sheet according to claim 6, is characterized in that: the extruder in described 3rd step is double screw extruder.
8. the preparation method of automobile disc type sheet according to claim 6, is characterized in that: the molding temperature in described 4th step is 150-155 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567898A (en) * | 2016-11-27 | 2017-04-19 | 河南职业技术学院 | Wear resistant automobile brake piece |
| CN106566187A (en) * | 2016-10-31 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Heat-resistant material for diesel engine parts and preparation method thereof |
| CN106566188A (en) * | 2016-10-31 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Flame-retardant diesel engine accessory material and preparation method thereof |
Citations (3)
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| CN106566188A (en) * | 2016-10-31 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Flame-retardant diesel engine accessory material and preparation method thereof |
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