CN102321366A - Preparation and application of high-wear-resistance modified nylon composition - Google Patents
Preparation and application of high-wear-resistance modified nylon composition Download PDFInfo
- Publication number
- CN102321366A CN102321366A CN201010569214A CN201010569214A CN102321366A CN 102321366 A CN102321366 A CN 102321366A CN 201010569214 A CN201010569214 A CN 201010569214A CN 201010569214 A CN201010569214 A CN 201010569214A CN 102321366 A CN102321366 A CN 102321366A
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- wear
- nylon
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- ppa
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses preparation and application of a high-wear-resistance modified nylon composition. The high-wear-resistance modified nylon composition comprises the following components in percentage by weight: 30-70 parts of PA66 (Polyamide) resin, 20-50 parts of PPA (Polyphthalamide) resin, 4-8 parts of toughening agent, 4-7 parts of wear-resisting agent and 2-5 parts of other auxiliary agents. The material has wide application in the fields of automobiles, machinery and the like and has an obvious advantage of substituting metal in the aspects of a wear-resistant shaft bushing, a slip sheet and the like. A preparation method for the high-wear-resistance modified nylon composition comprises the following process steps of: uniformly mixing the raw materials according to a proportion; adding into a double-screw extruder; and controlling the temperature at 250-330 DEG C for granulation to obtain the high-wear-resistance modified nylon composition. The high-wear-resistance modified nylon composition with superior comprehensive performance is prepared.
Description
[technical field]
The present invention relates to technical field of polymer materials, relate in particular to a kind of high abrasion modification of nylon preparation of compositions and application.
[technical background]
Nylon has good self lubricity, wear resistance, oil-proofness and good comprehensive mechanical properties, in the field that machinery, transmission, sealing uniform wearability are had relatively high expectations, has obtained using widely.The wear-resisting PA66 technology of at present existing several types, typical in the PA66 of rubber elastomer modification, graphite modified PA66, moly-sulfide modified Pa 66 etc.In recent years, utilize the modified abrasion resistant PA66 of PTFE micro mist anti-wear agent exploitation, and obtained market and extensively favor, wear resistance is superior, compares with moly-sulfide modified Pa 66, can prepare white goods, but there is add-on hour in the both, and wear resistance is general; Shortcomings such as add-on is big, and modification processing difficulties, cost are high, product surface is brightless.The present invention is intended to through the PA66 resin is carried out modification, makes it possess wear resistance, surface lubrication, brightness effect and better comprehensive mechanical property preferably.
[summary of the invention]
The purpose of this invention is to provide a kind of new high abrasion modification of nylon compsn.The present invention also provides a kind of preparation method of high abrasion modification of nylon.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is characterised in that its composition is (%) by weight ratio:
PA66 30-70
PPA 20-50
Toughner 4-8
Anti-wear agent 4-7
Other auxiliary agent 2-5
Described anti-wear agent is the compound system of Alpha-alumina 5-10 μ m or Alpha-alumina 5-10 μ m and silicone composition.
Described other auxiliary agent is fire-resistant oxidation resistant agent, thermo-stabilizer and processing aid etc.
Wherein, said PA66 resin, its viscosity is 0.26-0.28dl/g.Described PPA resin, its viscosity are 0.25-0.29dl/g, and described toughner is the maleic anhydride grafted polyethylene octene elastomer.Described anti-wear agent is Alpha-alumina 5-10 μ m or Alpha-alumina 5-10 μ m and silicone resin by a certain percentage 5: 0-5: 2 compound systems formed.Described other auxiliary agent comprises processing aid, surface lubricant, high temperature resistant oxidation inhibitor, thermo-stabilizer or ultraviolet absorbers.Above described a kind of high abrasion modification of nylon compsn, its composition is (%) by weight ratio:
PA66 30-70
PPA 20-50
Toughner 4-8
Anti-wear agent 4-7
Other auxiliary agent 2-5
Above-mentioned high abrasion modification of nylon preparation of compositions method and technology scheme comprises step:
A: with PA66, PPA 120 ℃ of dryings more than 4 hours in loft drier.
B: take by weighing dry good PA66, PPA, toughner, anti-wear agent and other auxiliary agent by weight ratio;
C: the raw material that weighs up is put at a high speed or done in the slow-speed mixer and mix 3-5min;
D: mixed raw materials among the b is put into the loading hopper of twin screw extruder, through melt extruding granulation; Complete processing is following: a district temperature 255-275 ℃, and two district temperature 310-330 ℃, three district temperature 310-330 ℃; Four district temperature 310-330 ℃, five district temperature 305-325 ℃, six district temperature 300-320 ℃; Seven district temperature 300-320 ℃, eight district temperature 300-320 ℃, head temperature 295-310 ℃; Residence time 2-3min, pressure are 10-14MPa.
The present invention is through adding rigidity, the wear resistance of a certain amount of organic rigid PPA raising PA66; Be balance wear resistance and brittle relation, add a certain amount of flexible elastomer and play toughness reinforcing and wear-resisting effect; Add a certain amount of Alpha-alumina ceramic and silicone resin, further improve wear resistance, surface lubrication and the brightness effect of PA66 compsn.Suitable through adding, an amount of in addition oxidation inhibitor, processing aid etc. improve processibility.So the present invention has following characteristics:
1: add the wear-resisting PPA of organic rigid, inorganic ceramic micro mist and flexible elastomer, play wear-resisting and toughening effect.
2: add silicone resin, improve surface lubrication, wear-resisting and brightness effect.
2: the PA66 compsn abrasion resistance index that the present invention proposes is high, improves about 10 times than common PA66.
[embodiment]
Embodiment 1
Prescription: PA66 resin 60 weight parts, PPA resin 38 weight parts, other auxiliary agent 2 weight parts.
Preparation PA66 compsn
With PA66, PPA, other auxiliary agent by 60 parts, 38 parts, 2 parts weight ratios after mixing under the high-speed stirring, melting mixing granulation in twin screw extruder.Each section of machine barrel temperature is controlled at 255-330 ℃, and the twin screw rotating speed is 350r/min.
Embodiment 2
Prescription: PA66 resin 58 weight parts, PPA resin 35 weight parts, toughner 5 weight parts, other auxiliary agent 2 weight parts.
Preparation PA66 compsn
With PA66, PPA, toughner, other auxiliary agent by 58 parts, 35 parts, 5 parts, 2 parts weight ratios after mixing under the high-speed stirring, melting mixing granulation in twin screw extruder.Each section of machine barrel temperature is controlled at 255-330 ℃, and the twin screw rotating speed is 350r/min.
Embodiment 3
Prescription: PA66 resin 55 weight parts, PPA 35 weight parts, toughner 5 weight parts, anti-wear agent (Alpha-alumina) 3 weight parts, other auxiliary agent 2 weight parts.
Preparation PA66 compsn
With PA66, PPA, toughner, anti-wear agent (Alpha-alumina), other auxiliary agent by 55 parts, 35 parts, 5 parts, 3 parts, 2 parts weight ratios after mixing under the high-speed stirring, melting mixing granulation in twin screw extruder.Each section of machine barrel temperature is controlled at 255-330 ℃, and the twin screw rotating speed is 350r/min.
Embodiment 4
Prescription: PA66 resin 53 weight parts, PPA resin 35 weight parts, toughner 5 weight parts, Alpha-alumina and silicone resin are by compound system 5 weight parts of 4: 1 compositions, other auxiliary agent 2 weight parts.
Preparation PA66 compsn
With PA66 resin, PPA resin, toughner, Alpha-alumina and the agent of silicone resin complex abrasion-proof and other auxiliary agent by 53 parts, 35 parts, 5 parts, 5 parts, 2 parts weight ratios after mixing under the high-speed stirring, melting mixing granulation in twin screw extruder.Each section of machine barrel temperature is controlled at 255-330 ℃, and the twin screw rotating speed is 350r/min.
The component of embodiment 1-4 is listed in table 1 respectively:
Table 1
Embodiment 1-4 material property is seen table 2:
Table 2
Annotate: measure according to tensile strength ASTM-D638, the measurement of modulus in flexure is according to the ASTM-D790 standard, and the measurement of cantilever-type impact strength is according to the ASTM-D256 standard, and wear resistance is according to GB/T 4085-2005 standard.
As shown in table 2, when embodiment 1 adds PPA separately, sample, shock strength is lower, abrasion are higher, wear resistance is general; It is better that embodiment 2 adds behind the described toughner of certain proportion patent rights the shock strength of sample, but its wear resistance increases; After embodiment 3 added described toughner of certain proportion patent right and Alpha-alumina, the shock strength of sample was better, and wear resistance improves, and abrasion further reduce.After embodiment 4 adds the described toughner of certain proportion patent rights, complex abrasion-proof agent, can make that impact property is good, abrasion are low, the modification of nylon composition material of excellent in abrasion resistance, and any surface finish is effective.Therefore, the prepared PA66 compsn of the present invention has good wear resistance, any surface finish effect and comprehensive mechanical property characteristics preferably preferably.This material satisfies the requirement of aspects such as the wear-resisting axle bush in fields such as automobile and machinery, slide plate, and with traditional stainless steel, compared with metal such as brass have with the obvious advantage.
At last, should be pointed out that above embodiment only is the more representational example of the present invention.Obviously, technical scheme of the present invention is not limited in the foregoing description, and a lot of variations can also be arranged.The all changes that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (8)
1. a high abrasion modification of nylon compsn is characterized in that, its composition is (%) by weight ratio:
PA66 30-70
PPA 20-50
Toughner 4-8
Anti-wear agent 4-7
Other auxiliary agent 2-5
Described anti-wear agent is the compound system of Alpha-alumina or Alpha-alumina and silicone composition.
Described other auxiliary agent is fire-resistant oxidation resistant agent, thermo-stabilizer and processing aid etc.
2. a kind of high abrasion modification of nylon compsn as claimed in claim 1, it is characterized in that: said nylon 66, its viscosity are 0.26-0.28dl/g.
3. a kind of high abrasion modification of nylon compsn as claimed in claim 1 is characterized in that: described PPA, its viscosity is 0.25-0.29dl/g.
4. a kind of high abrasion modification of nylon compsn as claimed in claim 1, it is characterized in that: described toughner is the maleic anhydride grafted polyethylene octene elastomer.
5. a kind of high abrasion modification of nylon compsn as claimed in claim 1 is characterized in that: described anti-wear agent is Alpha-alumina 5-10 μ m or Alpha-alumina 5-10 μ m and silicone resin by a certain percentage 5: 0-5: 2 compound systems formed.
6. a kind of high abrasion modification of nylon compsn as claimed in claim 1, it is characterized in that: described other auxiliary agent comprises processing aid, surface lubricant, high temperature resistant oxidation inhibitor, thermo-stabilizer or ultraviolet absorbers.
7. a kind of high abrasion modification of nylon compsn as claimed in claim 1 is characterized in that: it is formed is (%) by weight ratio:
PA66 30-60
PPA 30-50
Toughner (g-POE) 4-8
Anti-wear agent 4-7
Other auxiliary agent 2-5
8. a kind of according to claim 1 high abrasion modification of nylon preparation of compositions method is characterized in that: may further comprise the steps:
A: with PA66, PPA 120 ℃ of dryings more than 4 hours in loft drier.
B: take by weighing dry good PA66, PPA, toughner, anti-wear agent and other auxiliary agent by weight ratio;
C: the raw material that weighs up is put at a high speed or done in the slow-speed mixer and mix 3-5min;
D: mixed raw materials among the b is put into the loading hopper of twin screw extruder, through melt extruding granulation; Complete processing is following: a district temperature 255-275 ℃, and two district temperature 310-330 ℃, three district temperature 310-330 ℃; Four district temperature 310-330 ℃, five district temperature 305-325 ℃, six district temperature 300-320 ℃; Seven district temperature 300-320 ℃, eight district temperature 300-320 ℃, head temperature 295-310 ℃; Residence time 2-3min, pressure are 10-14MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010569214A CN102321366A (en) | 2010-12-02 | 2010-12-02 | Preparation and application of high-wear-resistance modified nylon composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010569214A CN102321366A (en) | 2010-12-02 | 2010-12-02 | Preparation and application of high-wear-resistance modified nylon composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102321366A true CN102321366A (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010569214A Pending CN102321366A (en) | 2010-12-02 | 2010-12-02 | Preparation and application of high-wear-resistance modified nylon composition |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160120A (en) * | 2013-03-04 | 2013-06-19 | 宁波锦地工程塑料有限公司 | High-temperature-resistant nylon composite material and preparation method thereof |
| WO2014018738A1 (en) * | 2012-07-26 | 2014-01-30 | Invista Technologies S.A R.L. | Thermoplastic composition for use in high impact applications |
| CN104387764A (en) * | 2013-11-16 | 2015-03-04 | 广西柳州中嘉知识产权服务有限公司 | Nylon composition and preparation method thereof |
| CN104710774A (en) * | 2015-04-14 | 2015-06-17 | 南通华新环保设备工程有限公司 | Novel high-strength anti-aging chain |
| CN104995259A (en) * | 2012-12-19 | 2015-10-21 | 因温斯特技术公司 | Thermoplastic polyamide components, and compositions and methods for their production and installation |
| US9388312B2 (en) | 2012-07-26 | 2016-07-12 | Invista North America S.A.R.L. | Thermoplastic composition for use in high impact applications |
| CN109825074A (en) * | 2019-01-23 | 2019-05-31 | 江翼明 | A kind of high rigidity semiaromatic polyamide composition and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014018738A1 (en) * | 2012-07-26 | 2014-01-30 | Invista Technologies S.A R.L. | Thermoplastic composition for use in high impact applications |
| CN104684999A (en) * | 2012-07-26 | 2015-06-03 | 因温斯特技术公司 | Thermoplastic composition for use in high impact applications |
| US9056982B2 (en) | 2012-07-26 | 2015-06-16 | Invista North America S.A.R.L. | Thermoplastic composition for use in high impact applications |
| US9388312B2 (en) | 2012-07-26 | 2016-07-12 | Invista North America S.A.R.L. | Thermoplastic composition for use in high impact applications |
| CN104995259A (en) * | 2012-12-19 | 2015-10-21 | 因温斯特技术公司 | Thermoplastic polyamide components, and compositions and methods for their production and installation |
| CN103160120A (en) * | 2013-03-04 | 2013-06-19 | 宁波锦地工程塑料有限公司 | High-temperature-resistant nylon composite material and preparation method thereof |
| CN104387764A (en) * | 2013-11-16 | 2015-03-04 | 广西柳州中嘉知识产权服务有限公司 | Nylon composition and preparation method thereof |
| CN104710774A (en) * | 2015-04-14 | 2015-06-17 | 南通华新环保设备工程有限公司 | Novel high-strength anti-aging chain |
| CN109825074A (en) * | 2019-01-23 | 2019-05-31 | 江翼明 | A kind of high rigidity semiaromatic polyamide composition and preparation method thereof |
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Application publication date: 20120118 |