CN106589892A - Diesel engine part material and preparation method thereof - Google Patents
Diesel engine part material and preparation method thereof Download PDFInfo
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- CN106589892A CN106589892A CN201610931110.9A CN201610931110A CN106589892A CN 106589892 A CN106589892 A CN 106589892A CN 201610931110 A CN201610931110 A CN 201610931110A CN 106589892 A CN106589892 A CN 106589892A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a diesel engine part material and a preparation method thereof, wherein polyether triol, an amine catalyst, stannous octoate, toluene cosabromodiphenyl ether, diantimony trioxide, barium sulfate, coke, decabromodiphenyl ether, mica, magnesium salt crystal whisker, wollastonite powder, stainless steel metal powder, a silane coupling agent and PA6 are weighed. According to the present invention, the diesel engine part material has the following characteristics that the abrasion loss is 0.01-0.05 mm, the oxygen index is 30-34%, the Shore hardness is 45-65 A, the notch impact strength is 100-140 kJ/m<3>, the EN compression set is 1-5%, the heat distortion temperature is 240-280 DEG C, the tensile strength is 150-190 MPa, the cold resistance is that no crack is generated at a temperature of -50 DEG C after folding, the bending strength is 200-240 MPa, the elongation at break is 550-750%, the tear strength is 40-60 kN/m, the impact resilience is 45-65%, and the bending modulus is 10.5-14.5 GPa.
Description
Technical field
The present invention relates to diesel engine Material Field, more particularly to a kind of diesel engine part materials and preparation method thereof.
Background technology
Diesel engine is mainly used in final auxiliary products, such as the main supporting heavy-duty car of Large-power High-Speed diesel engine,
Motorbus, engineering machinery, ship, generating set etc..Therefore, the development of diesel engine industry depends greatly on correlation
Terminal product markets situation.
In agricultural equipment Diesel engine field, the market of developing country increases will make up the market landing of developed country, global people
Mouthful rapid growth, and the update of old equipment all has larger demand, global agricultural equipment Diesel engine market to agricultural machinery
Rapid growth will be presented.In aero-engine field, Engine Industry is that the core of aircraft industry segments sub-industry, future development
Prospect is boundless.Analysis more than comprehensive to each field, it is believed that, global Diesel engine is steady by the speed for keeping 8%
Advance.
Gasoline penetrating air inlet pipe is typically mixed into combustion mixture and enters back into cylinder by petrol engine with air, and Jing is fiery
Spark plug ignition burning expansion is done work.People are commonly referred to as it for spark-ignition engine.And diesel engine is generally by injection pump and spray
Diesel oil is injected directly into cylinder by oily nozzle, and the air in cylinder after compression uniformly mixes, under high temperature, high pressure certainly
Combustion, promotes piston acting.People are normally referred to as compression ignition engine this engine.
The advantage of Diesel engine is that moment of torsion is big, economic performance is good.Each working cycles of Diesel engine also experience into
Gas, compression, acting, four strokes of exhaust.But because the fuel of use for diesel engine is diesel oil, its ratio of viscosities gasoline is big, is difficult evaporation,
And its autoignition temperature is low compared with gasoline, thus combustion mixture formation and sparking mode it is all different from gasoline engine.Difference
Mainly, the gaseous mixture in diesel engine cylinder is compression ignition, rather than light.Cylinder is entered when Diesel engine works
Be air, when the air in cylinder is compressed to terminal, up to 500-700 DEG C, pressure is up to 40-50 atmospheric pressure for temperature.It is living
When filling in close top dead centre, the high-pressure pump on engine sprays diesel oil in cylinder with high pressure, and diesel oil forms trickle elaioleucite, with height
The air mixing of super pressure-high temperature, diesel oil gaseous mixture self-burning, fierce expansion produces explosive force, promotes descent of piston acting, now
Temperature up to 1900-2000 DEG C, pressure is up to 60-100 atmospheric pressure, and the moment of torsion of generation is very big, so Diesel engine is wide
General is applied on large-sized diesel automobile.
Diesel engine part is such as：Diesel fuel filter, oil strainer, air filter, machine oil, water box liquid, belt etc.；Also someone is normal diesel engine
It is said to be with rapid wear accessory：In repair part or overhaul part；Such as：Diesel fuel filter, oil strainer, air filter, machine oil, water box liquid, belt, cylinder
Set, piston, piston ring, overhaul bag, valve, valve retainer, connecting rod bearing shell, main bearing shell etc..With social city, technicalization, people
Property development, design the bavin that a kind of impact strength is high, tensile strength is high, elongation at break is high, hardness is high and bending strength is high
Oil machine accessory materials and preparation method thereof, to meet the market demand, are very important.
The content of the invention
The technical problem of solution：
The application is for existing diesel accessory materials tensile strength is low, impact strength is low, elongation at break is low and bending strength
A kind of low technical problem, there is provided diesel engine part materials and preparation method thereof.
Technical scheme：
A kind of diesel engine part materials, raw materials by weight portion proportioning is as follows：100 parts of polyether-tribasic alcohol, amines catalyst 0.5-
0.9 part, stannous octoate 0.1-0.5 parts, the deca-BDE 1-1.4 parts of toluene two, antimony oxide 5-25 parts, barium sulfate 12-18
Part, coke 10-30 parts, deca-BDE 6-10 parts, mica 30-50 parts, magnesium salt whisker 25-45 parts, wollastonite in powder 6-10 parts, no
Rust steel metal powder 25-65 parts, silane coupler 13-17 parts, PA6 is 15-35 parts.
As a preferred technical solution of the present invention：The raw materials by weight portion of the diesel engine part materials is with such as
Under：100 parts of polyether-tribasic alcohol, amines catalyst 0.6-0.8 parts, stannous octoate 0.2-0.4 parts, the deca-BDE 1.1- of toluene two
1.3 parts, antimony oxide 10-20 parts, barium sulfate 13-17 parts, coke 15-25 parts, deca-BDE 7-9 parts, mica 35-45
Part, magnesium salt whisker 30-40 parts, wollastonite in powder 7-9 parts, stainless steel metal powder 35-55 parts, silane coupler 14-16 parts, PA6 is
20-30 parts.
As a preferred technical solution of the present invention：The raw materials by weight portion of the diesel engine part materials is with such as
Under：100 parts of polyether-tribasic alcohol, 0.6 part of amines catalyst, 0.2 part of stannous octoate, 1.1 parts of two deca-BDE of toluene, three oxidations
Two 10 parts of antimony, 13 parts of barium sulfate, 15 parts of coke, 7 parts of deca-BDE, 35 parts of mica, 30 parts of magnesium salt whisker, 7 parts of wollastonite in powder,
35 parts of stainless steel metal powder, 14 parts of silane coupler, PA6 is 20 parts.
As a preferred technical solution of the present invention：The raw materials by weight portion of the diesel engine part materials is with such as
Under：100 parts of polyether-tribasic alcohol, 0.8 part of amines catalyst, 0.4 part of stannous octoate, 1.3 parts of two deca-BDE of toluene, three oxidations
Two 20 parts of antimony, 17 parts of barium sulfate, 25 parts of coke, 9 parts of deca-BDE, 45 parts of mica, 40 parts of magnesium salt whisker, 9 parts of wollastonite in powder,
55 parts of stainless steel metal powder, 16 parts of silane coupler, PA6 is 30 parts.
As a preferred technical solution of the present invention：The raw materials by weight portion of the diesel engine part materials is with such as
Under：100 parts of polyether-tribasic alcohol, 0.7 part of amines catalyst, 0.3 part of stannous octoate, 1.2 parts of two deca-BDE of toluene, three oxidations
Two 15 parts of antimony, 15 parts of barium sulfate, 20 parts of coke, 8 parts of deca-BDE, 40 parts of mica, 35 parts of magnesium salt whisker, 8 parts of wollastonite in powder,
45 parts of stainless steel metal powder, 15 parts of silane coupler, PA6 is 25 parts.
As a preferred technical solution of the present invention：The preparation method step of the diesel engine part materials is：
The first step：Weigh polyether-tribasic alcohol, amines catalyst, stannous octoate, the deca-BDE of toluene two, antimony oxide, sulphur
Sour barium, coke, deca-BDE, mica, magnesium salt whisker, wollastonite in powder, stainless steel metal powder, silane coupler and PA6；
Second step：Polyether-tribasic alcohol, amines catalyst, stainless steel metal powder and silane coupler input is provided with into agitator and temperature
In the reactor of degree meter, 80-100 DEG C is warming up to, stirs 45-65min, mixing speed is 750-950 rev/min；
3rd step：Surplus stock is added, in input kneader, 35-55min, twin-screw extrusion barrel is mediated at 105-125 DEG C
Temperature 150-160 DEG C, 155-165 DEG C, 160-170 DEG C, 165-175 DEG C, 170-190 DEG C, 175-185 DEG C of head temperature, compacting
Moulding pressing temperature 150-160 DEG C, molding pressure 45-55MPa, clamp time 5-9min.
Beneficial effect：
Compared to the prior art a kind of diesel engine part materials of the present invention and preparation method thereof, are had using above technical scheme
There is following technique effect：1st, wear extent 0.01-0.05mm, oxygen index (OI) 30-34%, shore hardness 45-65A, notch impact strength
100-140kJ/m3；2nd, compression set 1-5%, heat distortion temperature 240-280 DEG C, tensile strength 150-190MPa；3rd, resist cold
- 50 DEG C of doubling flawlesses of property, bending strength 200-240MPa, elongation at break 550-750%；4th, tearing strength 40-60kN/m,
Bounce impact elasticity 45-65%, bending modulus 10.5-14.5GPa, mechanical property is good, can extensively produce and constantly replace existing material
Material.
Specific embodiment
Embodiment 1:
By weight proportioning weighs 100 parts of polyether-tribasic alcohol, 0.5 part of amines catalyst, 0.1 part of stannous octoate, toluene 20
1 part of dibromodiphenyl ether, 5 parts of antimony oxide, 12 parts of barium sulfate, 10 parts of coke, 6 parts of deca-BDE, 30 parts of mica, magnesium salt whisker
25 parts, 6 parts of wollastonite in powder, 25 parts of stainless steel metal powder, 13 parts of silane coupler, PA6 is 15 parts.
Polyether-tribasic alcohol, amines catalyst, stainless steel metal powder and silane coupler input is provided with into agitator and temperature
In the reactor of meter, 80 DEG C are warming up to, stir 45min, mixing speed is 750 revs/min.
Surplus stock is added, in input kneader, 35min is mediated at 105 DEG C, 150 DEG C of twin-screw extrusion barrel temperature,
155 DEG C, 160 DEG C, 165 DEG C, 170 DEG C, 175 DEG C of head temperature, 150 DEG C of compressing molding temperature, molding pressure 45MPa, mould
Pressure time 5min.
Wear extent 0.05mm, oxygen index (OI) 30%, shore hardness 45A, notch impact strength 100kJ/m3；Compression set
5%, 240 DEG C of heat distortion temperature, tensile strength 150MPa；- 50 DEG C of doubling flawlesses of cold resistance, bending strength 200MPa, fracture is stretched
Long rate 550%；Tearing strength 40kN/m, bounce impact elasticity 45%, bending modulus 10.5GPa, mechanical property is good, can extensively produce
And constantly replace current material.
Embodiment 2:
By weight proportioning weighs 100 parts of polyether-tribasic alcohol, 0.9 part of amines catalyst, 0.5 part of stannous octoate, toluene 20
1.4 parts of dibromodiphenyl ether, 25 parts of antimony oxide, 18 parts of barium sulfate, 30 parts of coke, 10 parts of deca-BDE, 50 parts of mica, magnesium salts
45 parts of whisker, 10 parts of wollastonite in powder, 65 parts of stainless steel metal powder, 17 parts of silane coupler, PA6 is 35 parts.
Polyether-tribasic alcohol, amines catalyst, stainless steel metal powder and silane coupler input is provided with into agitator and temperature
In the reactor of meter, 100 DEG C are warming up to, stir 65min, mixing speed is 950 revs/min.
Surplus stock is added, in input kneader, 55min is mediated at 125 DEG C, 160 DEG C of twin-screw extrusion barrel temperature,
165 DEG C, 170 DEG C, 175 DEG C, 190 DEG C, 185 DEG C of head temperature, 160 DEG C of compressing molding temperature, molding pressure 55MPa, mould
Pressure time 9min.
Wear extent 0.04mm, oxygen index (OI) 31%, shore hardness 50A, notch impact strength 110kJ/m3；Compression set
4%, 250 DEG C of heat distortion temperature, tensile strength 160MPa；- 50 DEG C of doubling flawlesses of cold resistance, bending strength 210MPa, fracture is stretched
Long rate 600%；Tearing strength 45kN/m, bounce impact elasticity 50%, bending modulus 11.5GPa, mechanical property is good, can extensively produce
And constantly replace current material.
Embodiment 3:
By weight proportioning weighs 100 parts of polyether-tribasic alcohol, 0.6 part of amines catalyst, 0.2 part of stannous octoate, toluene 20
1.1 parts of dibromodiphenyl ether, 10 parts of antimony oxide, 13 parts of barium sulfate, 15 parts of coke, 7 parts of deca-BDE, 35 parts of mica, magnesium salts
30 parts of whisker, 7 parts of wollastonite in powder, 35 parts of stainless steel metal powder, 14 parts of silane coupler, PA6 is 20 parts.
Polyether-tribasic alcohol, amines catalyst, stainless steel metal powder and silane coupler input is provided with into agitator and temperature
In the reactor of meter, 80 DEG C are warming up to, stir 45min, mixing speed is 750 revs/min.
Surplus stock is added, in input kneader, 35min is mediated at 105 DEG C, 150 DEG C of twin-screw extrusion barrel temperature,
155 DEG C, 160 DEG C, 165 DEG C, 170 DEG C, 175 DEG C of head temperature, 150 DEG C of compressing molding temperature, molding pressure 45MPa, mould
Pressure time 5min.
Wear extent 0.03mm, oxygen index (OI) 32%, shore hardness 55A, notch impact strength 120kJ/m3；Compression set
3%, 260 DEG C of heat distortion temperature, tensile strength 170MPa；- 50 DEG C of doubling flawlesses of cold resistance, bending strength 220MPa, fracture is stretched
Long rate 650%；Tearing strength 50kN/m, bounce impact elasticity 55%, bending modulus 12.5GPa, mechanical property is good, can extensively produce
And constantly replace current material.
Embodiment 4:
By weight proportioning weighs 100 parts of polyether-tribasic alcohol, 0.8 part of amines catalyst, 0.4 part of stannous octoate, toluene 20
1.3 parts of dibromodiphenyl ether, 20 parts of antimony oxide, 17 parts of barium sulfate, 25 parts of coke, 9 parts of deca-BDE, 45 parts of mica, magnesium salts
40 parts of whisker, 9 parts of wollastonite in powder, 55 parts of stainless steel metal powder, 16 parts of silane coupler, PA6 is 30 parts.
Polyether-tribasic alcohol, amines catalyst, stainless steel metal powder and silane coupler input is provided with into agitator and temperature
In the reactor of meter, 100 DEG C are warming up to, stir 65min, mixing speed is 950 revs/min.
Surplus stock is added, in input kneader, 55min is mediated at 125 DEG C, 160 DEG C of twin-screw extrusion barrel temperature,
165 DEG C, 170 DEG C, 175 DEG C, 190 DEG C, 185 DEG C of head temperature, 160 DEG C of compressing molding temperature, molding pressure 55MPa, mould
Pressure time 9min.
Wear extent 0.02mm, oxygen index (OI) 33%, shore hardness 60A, notch impact strength 130kJ/m3；Compression set
2%, 270 DEG C of heat distortion temperature, tensile strength 180MPa；- 50 DEG C of doubling flawlesses of cold resistance, bending strength 230MPa, fracture is stretched
Long rate 700%；Tearing strength 55kN/m, bounce impact elasticity 60%, bending modulus 13.5GPa, mechanical property is good, can extensively produce
And constantly replace current material.
Embodiment 5:
By weight proportioning weighs 100 parts of polyether-tribasic alcohol, 0.7 part of amines catalyst, 0.3 part of stannous octoate, toluene 20
1.2 parts of dibromodiphenyl ether, 15 parts of antimony oxide, 15 parts of barium sulfate, 20 parts of coke, 8 parts of deca-BDE, 40 parts of mica, magnesium salts
35 parts of whisker, 8 parts of wollastonite in powder, 45 parts of stainless steel metal powder, 15 parts of silane coupler, PA6 is 25 parts.
Polyether-tribasic alcohol, amines catalyst, stainless steel metal powder and silane coupler input is provided with into agitator and temperature
In the reactor of meter, 90 DEG C are warming up to, stir 55min, mixing speed is 850 revs/min.
Surplus stock is added, in input kneader, 45min is mediated at 115 DEG C, 155 DEG C of twin-screw extrusion barrel temperature,
160 DEG C, 165 DEG C, 170 DEG C, 180 DEG C, 180 DEG C of head temperature, 155 DEG C of compressing molding temperature, molding pressure 50MPa, mould
Pressure time 7min.
Wear extent 0.01mm, oxygen index (OI) 34%, shore hardness 65A, notch impact strength 140kJ/m3；Compression set
1%, 280 DEG C of heat distortion temperature, tensile strength 190MPa；- 50 DEG C of doubling flawlesses of cold resistance, bending strength 240MPa, fracture is stretched
Long rate 750%；Tearing strength 60kN/m, bounce impact elasticity 65%, bending modulus 14.5GPa, mechanical property is good, can extensively produce
And constantly replace current material.
All components in above example can be with commercially available.
Above-described embodiment is only intended to be illustrated present disclosure, rather than limits, therefore with the present invention's
Any change in claims suitable implication and scope, is all considered as being included within the scope of the claims.
Claims (6)
1. a kind of diesel engine part materials, it is characterised in that the raw materials by weight portion of the diesel engine part materials is with such as
Under：100 parts of polyether-tribasic alcohol, amines catalyst 0.5-0.9 parts, stannous octoate 0.1-0.5 parts, the deca-BDE 1- of toluene two
1.4 parts, antimony oxide 5-25 parts, barium sulfate 12-18 parts, coke 10-30 parts, deca-BDE 6-10 parts, mica 30-50
Part, magnesium salt whisker 25-45 parts, wollastonite in powder 6-10 parts, stainless steel metal powder 25-65 parts, silane coupler 13-17 parts, PA6 is
15-35 parts.
2. a kind of diesel engine part materials according to claim 1, it is characterised in that the original of the diesel engine part materials
Material proportioning by weight is as follows：100 parts of polyether-tribasic alcohol, amines catalyst 0.6-0.8 parts, stannous octoate 0.2-0.4 parts, first
The deca-BDE 1.1-1.3 parts of benzene two, antimony oxide 10-20 parts, barium sulfate 13-17 parts, coke 15-25 parts, decabrominated dipheny
Ether 7-9 parts, mica 35-45 parts, magnesium salt whisker 30-40 parts, wollastonite in powder 7-9 parts, stainless steel metal powder 35-55 parts, silane idol
Connection agent 14-16 parts, PA6 is 20-30 parts.
3. a kind of diesel engine part materials according to claim 1, it is characterised in that the original of the diesel engine part materials
Material proportioning by weight is as follows：100 parts of polyether-tribasic alcohol, 0.6 part of amines catalyst, 0.2 part of stannous octoate, the bromine of toluene 20
1.1 parts of diphenyl ether, 10 parts of antimony oxide, 13 parts of barium sulfate, 15 parts of coke, 7 parts of deca-BDE, 35 parts of mica, magnesium salts is brilliant
30 parts of palpus, 7 parts of wollastonite in powder, 35 parts of stainless steel metal powder, 14 parts of silane coupler, PA6 is 20 parts.
4. a kind of diesel engine part materials according to claim 1, it is characterised in that：The original of the diesel engine part materials
Material proportioning by weight is as follows：100 parts of polyether-tribasic alcohol, 0.8 part of amines catalyst, 0.4 part of stannous octoate, the bromine of toluene 20
1.3 parts of diphenyl ether, 20 parts of antimony oxide, 17 parts of barium sulfate, 25 parts of coke, 9 parts of deca-BDE, 45 parts of mica, magnesium salts is brilliant
40 parts of palpus, 9 parts of wollastonite in powder, 55 parts of stainless steel metal powder, 16 parts of silane coupler, PA6 is 30 parts.
5. a kind of diesel engine part materials according to claim 1, it is characterised in that：The original of the diesel engine part materials
Material proportioning by weight is as follows：100 parts of polyether-tribasic alcohol, 0.7 part of amines catalyst, 0.3 part of stannous octoate, the bromine of toluene 20
1.2 parts of diphenyl ether, 15 parts of antimony oxide, 15 parts of barium sulfate, 20 parts of coke, 8 parts of deca-BDE, 40 parts of mica, magnesium salts is brilliant
35 parts of palpus, 8 parts of wollastonite in powder, 45 parts of stainless steel metal powder, 15 parts of silane coupler, PA6 is 25 parts.
6. the preparation method of diesel engine part materials described in a kind of claim 1, it is characterised in that comprise the steps：
The first step：Weigh polyether-tribasic alcohol, amines catalyst, stannous octoate, the deca-BDE of toluene two, antimony oxide, sulphur
Sour barium, coke, deca-BDE, mica, magnesium salt whisker, wollastonite in powder, stainless steel metal powder, silane coupler and PA6；
Second step：Polyether-tribasic alcohol, amines catalyst, stainless steel metal powder and silane coupler input is provided with into agitator and temperature
In the reactor of degree meter, 80-100 DEG C is warming up to, stirs 45-65min, mixing speed is 750-950 rev/min；
3rd step：Surplus stock is added, in input kneader, 35-55min, twin-screw extrusion barrel is mediated at 105-125 DEG C
Temperature 150-160 DEG C, 155-165 DEG C, 160-170 DEG C, 165-175 DEG C, 170-190 DEG C, 175-185 DEG C of head temperature, compacting
Moulding pressing temperature 150-160 DEG C, molding pressure 45-55MPa, clamp time 5-9min.
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| CN201610931110.9A CN106589892A (en) | 2016-10-31 | 2016-10-31 | Diesel engine part material and preparation method thereof |
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| CN201610931110.9A CN106589892A (en) | 2016-10-31 | 2016-10-31 | Diesel engine part material and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399438A (en) * | 2011-11-24 | 2012-04-04 | 上海日之升新技术发展有限公司 | High glowing filament antistatic PA6 (Polymide 6) composite material and preparation method and application thereof |
| CN102863788A (en) * | 2012-09-28 | 2013-01-09 | 合肥杰事杰新材料股份有限公司 | Low-surface-resistance high-glass-fiber reinforced flame-retardant nylon resin composition and preparation method thereof |
| CN103146189A (en) * | 2013-02-26 | 2013-06-12 | 上海凯赛生物技术研发中心有限公司 | Nylon modified plastic |
-
2016
- 2016-10-31 CN CN201610931110.9A patent/CN106589892A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399438A (en) * | 2011-11-24 | 2012-04-04 | 上海日之升新技术发展有限公司 | High glowing filament antistatic PA6 (Polymide 6) composite material and preparation method and application thereof |
| CN102863788A (en) * | 2012-09-28 | 2013-01-09 | 合肥杰事杰新材料股份有限公司 | Low-surface-resistance high-glass-fiber reinforced flame-retardant nylon resin composition and preparation method thereof |
| CN103146189A (en) * | 2013-02-26 | 2013-06-12 | 上海凯赛生物技术研发中心有限公司 | Nylon modified plastic |
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Application publication date: 20170426 |