CN106560490B - Thermoplastic composition - Google Patents
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- CN106560490B CN106560490B CN201610794555.7A CN201610794555A CN106560490B CN 106560490 B CN106560490 B CN 106560490B CN 201610794555 A CN201610794555 A CN 201610794555A CN 106560490 B CN106560490 B CN 106560490B
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide 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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
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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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
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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
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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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention relates to a thermoplastic composition capable of replacing thermosetting plastics and crosslinked nylon and being used for a contact supporting component of a medium-high-end alternating current contactor. The thermoplastic composition is prepared by selecting a specific resin matrix, reasonably compounding a reinforcing agent, a wear-resistant agent and a specific flame retardant to form a reinforcing/flame-retardant/wear-resistant synergistic system, and fully exerting the functions of all components. Compared with the prior art, the thermoplastic composition has the characteristics of high impact strength, high heat resistance, good flame retardant property, good wear resistance, good high-temperature dimensional stability, excellent arc resistance and good insulativity, and completely meets the performance requirements of contact supporting materials.
Description
Technical Field
The invention relates to the field of polymer composite materials, in particular to a thermoplastic composition which can successfully replace thermosetting plastics and crosslinked nylon and is used for a contact supporting component of a medium-high-end alternating current contactor, and the thermoplastic composition has the advantages of good wear resistance, good high-temperature dimensional stability, high CTI value, excellent arc resistance and good flame retardant property.
Background
The AC contactor is a low-voltage electrical appliance which uses an external power supply to be added on a coil to generate an electromagnetic field, is electrified to attract, and a contact point is disconnected after power failure. The alternating current contactor mainly comprises four parts: the electromagnetic system comprises an attraction coil, a movable iron core and a static iron core; the contact system comprises a plurality of pairs of moving contacts, fixed contacts and contact supports, wherein the contact supports are assembled with a pressure plate, a buffer piece, a supporting piece, an armature, the moving contacts, a spring support, a gasket, a nut, a screw and the like. The contact support is a key connecting component in the contactor in view of the structure of the ac contactor and the connection relationship between the parts.
The working principle of the alternating current contactor is as follows: when the coil is electrified, the armature is attracted, the attraction force of the electromagnetic system overcomes the counterforce of the spring and the contact spring, the contact supports movement, the moving contact is contacted with the fixed contact, and the main circuit is switched on. When the coil is powered off, the armature and the moving contact move under the action of the reaction force of the spring, the contact is disconnected and generates electric arc, the electric arc is strongly cooled to dissociate in the arc extinguish chamber and is extinguished under the drive of the electric power and the pneumatic power of the contact loop, and the main circuit is finally cut off. The contact support is assembled with a plurality of key parts, and the key parts can collide and rub with each contacted part in the linkage process, particularly with an alternating current contactor base, so that the contact support material is wear-resistant in the primary performance. Secondly, in the frequent opening and closing process of the moving contact and the static contact, electric arcs can be generated, the electric arcs can continuously impact the contact support, if the arc resistance of the contact support material is poor, the contact support surface can be carbonized, and further a conductive path is generated, so that the whole machine fails, and therefore the requirement of the contact support material on the arc resistance is higher (the arc resistance time is not less than 260 s). In addition, the ac contactor may contact oil stain, dust and other pollutants under severe working environment under certain conditions, and the requirement on the Comparative Tracking Index (CTI) value of the contact supporting material is high, and generally more than 500V is required.
In addition, the national standard GB14048.4-2010 "low-voltage switchgear and control device part 4-1: contactors and motor starters electromechanical contactors and motor starters (including motor protectors) have clear requirements on the mechanical life of contactors: the recommended number of mechanical lifetimes is 0.1, 0.3, 1, 3, 10, 30, 100, 300, and 1000 ten thousand times, depending on the requirements of use. The mechanical life of a contactor is expressed in terms of the number of unloaded operating cycles that the contactor can withstand before requiring maintenance or replacement of mechanical parts, and one closing operation followed by one opening operation is referred to as 1 operating cycle. The mechanical life judgment standard is as follows: after the test, the contactor is required to meet the requirements that the contactor is used alone or is preset in a starter at room temperature, any value between 85% and 110% of the rated control power supply voltage Us of the contactor is reliably attracted, the release action voltage of the contactor is 20% to 75% of the rated control power supply voltage Us of the contactor, and meanwhile, no destructive damage is caused to parts and parts for connecting wires are required to be loosened. The mechanical life of the industrial medium-high-end contactor (the model with the rated working current requirement of 100A and above) is generally required to be more than 300 ten thousand times, but the requirement can be met by fresh materials. In a medium-high alternating current contactor requiring a high rated operating current, when a coil is energized, a yoke has energy consumption such as iron loss and copper loss, and the yoke becomes a main heat source of the contactor due to heat energy transfer of the coil, which requires a mechanism around the yoke to have good heat resistance. Additionally, ac contactors develop high temperatures (up to 150 ℃) during temperature rise tests. Therefore, the contact support also needs to have high-temperature-resistant dimensional stability so as to ensure that the contact support hardly deforms at the high temperature of 150 ℃. The contact supports as a fixed current-carrying part in the contactor, and simultaneously meets the abnormal heat and fire resistance test in the national standard GB14048.4-2010, namely passes the requirement of a glow wire at 850 ℃, and actually, an electrical manufacturer also requires that the electrical manufacturer simultaneously meet the requirement of UL94V-0 flame retardant grade.
The existing contact support is a thermoset plastic or cross-linked nylon plastic piece. The thermosetting plastic has good rigidity and electromechanical properties, higher heat resistance, better chemical solvent resistance, good flame resistance and productsThe size stability is good, but the wear-resisting plastic powder is not wear-resistant, collision and friction are generated between the plastic powder and a base in work, powder falling can occur during 300 ten thousand times of tests of the whole alternating current contactor, the falling plastic powder can be adhered to an iron core, the sensitivity of the alternating current contactor can be influenced because the plastic powder is a non-conductor, and even a circuit is forced to be cut off in serious cases, so that the alternating current contactor fails and is not suitable for a medium-high-end alternating current contactor. Although the cross-linked nylon can meet the wear-resisting property requirement supported by the contact, only a few foreign enterprises can produce the cross-linked nylon globally, so the cross-linked nylon has narrow goods source path and high price and is difficult to popularize and apply. Furthermore, thermosetting plastics are compression molded, such as phenolic molding plastics, which are condensed to form water due to condensation polymerization during curing, and the molding pressure is high (300-2) The pressing time is long, and the production efficiency is low. The finished product supported by the compression molding contact needs manual trimming treatment, and the compression molding can only mold one product, so that continuous production cannot be realized; in addition, the waste, leftover materials and defective products generated in the process of producing the contact supporting plastic part by using the thermosetting plastic cannot be dissolved in a common solvent, can only be corroded by a strong oxidant or swelled in the solvent, cannot be remelted or softened and flowed during reheating, can only be subjected to secondary processing such as cutting when the shape is changed, cannot be recycled, invisibly improves the comprehensive cost of using the thermosetting plastic, and does not meet the requirement of green manufacturing and environmental protection advocated by the state. Although the cross-linked nylon can be formed by injection molding, continuous production can be realized, but a production process is increased virtually because irradiation cross-linking treatment is needed after injection molding, and the production efficiency is reduced. In addition, because the irradiation crosslinking belongs to irreversible reaction, the irradiated workpiece can not be melted after being heated, so that defective products can not be recycled. Whether the material is thermosetting plastic or cross-linked nylon, a cross-linking and curing chemical reaction process is needed after the molding, and the cross-linking process is controlled improperly, so that the cross-linking degree is not uniform, and the performance of a product is not uniform. Therefore, a new material for replacing thermosetting plastics and crosslinked nylon for supporting the contact of the medium-high-end alternating current contactor is urgently needed to be found, and the problem existing in the existing contact supporting material is thoroughly solvedAnd (5) a defect.
The existing modified thermoplastic plastic has excellent processability, low requirement on equipment, high production efficiency, repeated heating, melting and cooling hardening, recycling and good impact strength. However, the common thermoplastic plastic has low allowable use temperature, is easy to deform at high temperature, has poor high-temperature dimensional stability and has abrasion resistance which does not meet the requirements of contact supporting materials. In addition, CTI values and arc resistance are generally inferior to those of thermoset materials, thereby limiting the application of thermoplastic materials in contact support.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a thermoplastic composition which has the advantages of good wear resistance, good high-temperature dimensional stability, high CTI value, excellent arc resistance and good flame retardant property, can successfully replace thermosetting plastics and crosslinked nylon to be used for contact supporting parts of medium and high-end alternating current contactors, can be recycled, and thoroughly solves the defects existing in the existing contact supporting materials.
The above object of the present invention is achieved by the following technical solutions:
a thermoplastic composition comprising a thermoplastic resin matrix and a functional aid system, wherein:
the thermoplastic resin matrix is nylon resin with melting point more than or equal to 280 ℃, glass transition temperature more than or equal to 70 ℃ and water absorption (23 ℃, in water, 24 hours) less than or equal to 1 percent; preferably, the melting point is more than or equal to 300 ℃; preferably, the glass transition temperature is equal to or greater than 100 ℃, more preferably equal to or greater than 120 ℃;
the weight ratio of the thermoplastic resin matrix to the functional assistant system is 1: 5-2.5: 1, preferably 1: 4-2: 1, and more preferably 1: 3-1: 1;
the functional assistant system is a synergistic system consisting of a reinforcing agent, a flame retardant and a wear-resisting agent, wherein the weight ratio of the reinforcing agent to the flame retardant to the wear-resisting agent is 2-15: 1-6: 0.1-2, the preferred ratio is 3-12: 2-6: 0.1-1.5, and the more preferred ratio is 6-12: 3-6: 0.1-1;
the thermoplastic composition has a coefficient of friction of less than or equal to 0.15 and a creep value of less than or equal to 0.3% (test specimen size: 10X 4X (1.6 +/-0.1) mm; test temperature: 150 ℃, load: 2.5N; time 4 hours).
Furthermore, the HDT value of the thermoplastic composition is more than or equal to 275 ℃, the electrical strength is more than or equal to 15KV/mm, and the arc resistance is more than or equal to 280 s; the CTI value is more than or equal to 500V.
Preferably, the nylon resin is selected from one or more of PPA, HTN, PA6T, PA9T, PA10T and PA 12T.
Further, the reinforcing agent is one or a compound of glass fiber and inorganic mineral powder, and the inorganic mineral powder is one or any more of talcum powder, wollastonite and glass beads.
Further, the glass fiber and the inorganic mineral powder are compounded according to the weight ratio of 1: 6-45: 1, preferably the ratio of 2: 5-45: 1, and more preferably the ratio of 2: 1-40: 1.
Further, the anti-wear agent is selected from any one or more of molybdenum disulfide, silicone and polytetrafluoroethylene subjected to radiation treatment.
Further, the flame retardant is a brominated flame retardant and a flame retardant synergist thereof, and the brominated flame retardant is polybrominated styrene or brominated polystyrene; the flame-retardant synergist is one or more selected from antimony trioxide, anhydrous zinc borate and sodium antimonite.
Further, the weight ratio of the nylon resin body, the reinforcing agent, the flame retardant and the wear-resisting agent is 4-12: 2-15: 1-6
0.1-2, preferably 5-12: 3-12: 2-6: 0.1-1.5, more preferably 5-11: 6-12: 3-6: 0.1-1.
Preferably, the thermoplastic composition consists of the following components in parts by weight:
26-51 parts of nylon resin
0-45 parts of glass fiber
0-35 parts of inorganic mineral powder
8-22 parts of flame retardant
2-8 parts of flame-retardant synergist
0.5-10 parts of a wear-resisting agent.
Further, the thermoplastic composition further comprises the following components:
0.1 to 1 portion of lubricant
0.1-1 part of antioxidant.
Preferably, the lubricant is selected from any one or more of polysiloxane, calcium stearate, oxidized polyethylene wax and pentaerythritol stearate; the antioxidant is selected from one or more of antioxidant 1010, antioxidant 1076, antioxidant 1098, antioxidant 168, antioxidant 626, antioxidant S-9228, antioxidant DSTP, antioxidant DLTP, antioxidant 2246 and antioxidant 300.
It is another object of the present invention to provide a molded article prepared using the above thermoplastic composition.
It is a third object of the present invention to provide an ac contactor contact support comprising the above thermoplastic composition.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention selects a specific resin matrix, adopts the reinforcing agent, the wear-resisting agent and the specific flame retardant to be reasonably compounded to form a reinforcing/flame-retardant/wear-resisting synergistic system, fully exerts the functions of all components, and ensures that the prepared thermoplastic composition has high impact strength (the non-notched impact strength is more than or equal to 35 KJ/m)2) The material has the advantages of high heat resistance (the heat deformation temperature is more than or equal to 275 ℃), good flame retardant property (the material can pass through a glow wire with the temperature of 960 ℃ and the flame retardant grade is V-0), good wear resistance (the friction coefficient is less than or equal to 0.15), good high-temperature dimensional stability (the creep value is less than or equal to 0.3 percent under the continuous action of 2.5N force at the temperature of 150 ℃ for 4 hours), excellent arc resistance (the arc resistance time is more than or equal to 280s), good insulation property (the electric shock strength is more than or equal to 15KV/mm) and high CTI value (more than 500V), and completely meets the performance requirements of contact supporting materials.
2. The thermoplastic composition can realize one-mold multi-cavity in the process of processing and forming the contact support, a plurality of products are obtained by one-step forming, the surfaces of the prepared products are flat, no flash is generated, the manual trimming procedure is omitted, leftover materials and defective products generated in the production process can be recycled and subjected to secondary melting injection molding, no production waste is generated, and the thermoplastic composition is very environment-friendly. The prepared contact support can pass 300 ten thousand times of alternating current contact mechanical life test, and has no powder particle falling phenomenon in the test process. After mechanical life test, the contact support surface has no obvious wear trace and deformation, the contactor can be used alone or preset in a starter at room temperature, can be reliably closed at any value between 85% and 110% of rated control power supply voltage Us, and can be reliably opened at any value between 20% and 75% of rated control power supply voltage Us.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example raw materials
HTN resin, melting point Tm is 305 ℃, glass transition temperature Tg is 135 ℃, and water absorption rate is 0.43%;
PPA resin, the melting point Tm is 310 ℃, the glass transition temperature Tg is 124 ℃, and the water absorption rate is 0.24%;
PA10T resin, the melting point Tm is 316 ℃, the glass transition temperature Tg is 135 ℃, and the water absorption rate is 0.12%;
PA46 resin, melting point Tm is 290 ℃, glass transition temperature Tg is 78 ℃, and water absorption rate is 3.7%;
PA66 resin, the melting point Tm is 262 ℃, the glass transition temperature Tg is 47 ℃, and the water absorption rate is 1.3%;
glass fiber: short glass fibers with the diameter of 5-23 mu m;
inorganic mineral powder: talcum powder, wollastonite and glass beads;
flame retardant: brominated polystyrene, polybrominated styrene;
flame retardant synergist: anhydrous zinc borate, antimony trioxide, and antimonite;
wear-resisting agent: polytetrafluoroethylene, molybdenum disulfide, silicone;
lubricant: polysiloxanes, pentaerythritol stearate;
antioxidant: antioxidant 1098, antioxidant S-9228 and antioxidant 300.
Adding the materials except the glass fibers into a mixer according to the material proportion in the table 1, mixing, and adding the mixture into an extruder from a main feeding port; the glass fiber is added into the extruder from a side feeding port. After melt blending, cooling, air drying and granulation, the performance test is shown in table 2.
And (3) performance testing:
testing the unnotched impact strength according to an ISO 179/1eU standard;
testing the thermal deformation temperature according to ISO 75-1/-2 standard;
③ flame retardant property: the flame retardant rating is tested according to UL-94 standard, and the burning index of the glow wire is tested according to GB/T5169.12-2006 standard;
creep value: 10X 4X 1.6mm sample bars were produced by injection moulding and tested using a static thermomechanical analyzer (TMA) according to the following test method: heating to 150 ℃ from the initial temperature of 30 ℃ at the speed of 10 ℃/min, applying 2.5N acting force to the central point of the 10 multiplied by 4 dimension surface of the sample strip in the vertical direction, and keeping the force application time for 4h to calculate the creep value. Creep value is equal to displacement difference of starting and ending points/thickness of the sample band multiplied by 100 percent;
friction coefficient: testing according to the GB3960 standard;
arc resistance: testing according to the GB/T1411-2002 standard;
the CTI value: testing according to GB/T4207-;
electrical strength of [: testing according to GB/T1408.1-2006 standard.
TABLE 1 example thermoplastic compositions weight ratios
TABLE 2 Property parameters of the thermoplastic compositions obtained in the examples
As shown in Table 2, the thermoplastic composition prepared by the invention has the advantages of high impact strength, heat resistance, wear resistance, excellent high-temperature dimensional stability, excellent electrical property and flame retardant property and the like, and can be widely used as parts such as internal parts of low-voltage electrical appliances, contact supports of alternating current contactors, coil frameworks, electronic connectors and the like.
In addition, under the same component ratio, the compositions (comparative example 1 and comparative example 2) prepared by selecting PA4 resin with higher water absorption (3.7%) or PA66 with lower melting point and glass transition temperature as resin matrix have higher creep values than that of example 11 (the resin matrix is PPA); furthermore, the composition with PA66 as the resin matrix had a heat distortion temperature of only 238 ℃ which is significantly poorer than that of example 11(279 ℃), indicating that the choice of the resin matrix is decisive for the heat resistance and the dimensional stability at high temperatures of the composition. In addition, comparative examples 1 and 2 also exhibited significantly poorer electrical properties, such as electrical strength, CTI value and arc resistance, than example 11.
The thermoplastic compositions prepared in the examples and the comparative examples and the current commonly used contact support material (thermosetting material MPV7500, commercially available) are punched into contact supports, the contact supports are respectively installed in the alternating current contactors, and the mechanical life of the alternating current contactors is verified by a complete machine test in an alternating current contactor mechanical life test bed. The test results are shown in Table 3.
TABLE 3 complete machine test results
As shown in Table 3, when the thermoplastic composition material prepared by the invention is used as a contact support member, the thermoplastic composition material can pass 300 ten thousand mechanical life tests, no plastic powder drop phenomenon occurs in the test process, and the performance requirements of the contact support material of the medium-high-end alternating current contactor can be met.
It is to be understood that: although the above embodiments have described the design idea of the present invention in more detail, these descriptions are only simple descriptions of the design idea of the present invention, and are not limitations of the design idea of the present invention, and any combination, addition, or modification without departing from the design idea of the present invention falls within the protection scope of the present invention.
Claims (6)
1. An ac contactor contact support made from a thermoplastic composition comprising a thermoplastic resin matrix, wherein: the thermoplastic resin matrix is nylon resin with a melting point of more than or equal to 280 ℃, a glass transition temperature of more than or equal to 70 ℃ and a water absorption rate of less than or equal to 1 percent; the thermoplastic composition comprises the following components in parts by weight:
26-51 parts of nylon resin;
21-45 parts of glass fiber;
6-35 parts of inorganic mineral powder;
8-22 parts of a flame retardant;
2-8 parts of a flame-retardant synergist;
0.5-10 parts of a wear-resisting agent;
0.1-1 part of a lubricant;
0.1-1 part of antioxidant;
the inorganic mineral powder is selected from one or more of talcum powder, wollastonite and glass beads;
the wear-resisting agent is selected from any one or more of molybdenum disulfide, silicone and polytetrafluoroethylene subjected to irradiation treatment;
the flame retardant is a brominated flame retardant, and the brominated flame retardant is polybrominated styrene or brominated polystyrene; the flame-retardant synergist is one or more selected from antimony trioxide, anhydrous zinc borate and sodium antimonite;
the thermoplastic composition has a coefficient of friction of less than or equal to 0.15 and a creep value of less than or equal to 0.3%.
2. The ac contactor contact support according to claim 1, wherein said thermoplastic resin matrix is nylon resin having a melting point of 300 ℃ or higher and a glass transition temperature of 100 ℃ or higher.
3. The ac contactor contact support according to claim 1, wherein said thermoplastic resin matrix is a nylon resin having a glass transition temperature of 120 ℃ or higher.
4. The ac contactor contact support according to any one of claims 1-3, wherein the thermoplastic resin matrix is selected from one or more of PPA, HTN, PA6T, PA9T, PA10T, PA 12T.
5. The ac contactor contact support according to any one of claims 1-3, wherein said lubricant is selected from any one or more of polysiloxane, calcium stearate, oxidized polyethylene wax, pentaerythritol stearate.
6. The ac contactor contact support according to any one of claims 1-3, wherein said antioxidant is selected from any one or more of antioxidant 1010, antioxidant 1076, antioxidant 1098, antioxidant 168, antioxidant 626, antioxidant S-9228, antioxidant DSTP, antioxidant DLTP, antioxidant 2246, and antioxidant 300.
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| CN110112015B (en) * | 2019-04-30 | 2024-08-27 | 德力西电气有限公司 | Combined contact support |
| CN110387124A (en) * | 2019-07-09 | 2019-10-29 | 广东奇德新材料股份有限公司 | A kind of halogen-free flame-proof reinforced poly phthalamide composite material and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120879A (en) * | 2011-02-19 | 2011-07-13 | 本松工程塑料（杭州）有限公司 | High-temperature resistant and high-CTI (Comparative Tracing Index) flame-retardant polyamide composite material and preparation method thereof |
| CN104479352A (en) * | 2014-12-18 | 2015-04-01 | 安徽科聚新材料有限公司 | Polyphthalamide (PPA) composite material with high temperature resistance and abrasion resistance and preparation method of PPA composite material |
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| CN104725807B (en) * | 2015-02-27 | 2018-05-29 | 桂林智龙电工器材有限公司 | A kind of wear-resisting type environment protection modification unsaturated polyester (UP) electrician's moulding compound and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102120879A (en) * | 2011-02-19 | 2011-07-13 | 本松工程塑料（杭州）有限公司 | High-temperature resistant and high-CTI (Comparative Tracing Index) flame-retardant polyamide composite material and preparation method thereof |
| CN104479352A (en) * | 2014-12-18 | 2015-04-01 | 安徽科聚新材料有限公司 | Polyphthalamide (PPA) composite material with high temperature resistance and abrasion resistance and preparation method of PPA composite material |
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