CN102337022A - Nylon material special for breakers and preparation method thereof - Google Patents
Nylon material special for breakers and preparation method thereof Download PDFInfo
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- CN102337022A CN102337022A CN2011101439120A CN201110143912A CN102337022A CN 102337022 A CN102337022 A CN 102337022A CN 2011101439120 A CN2011101439120 A CN 2011101439120A CN 201110143912 A CN201110143912 A CN 201110143912A CN 102337022 A CN102337022 A CN 102337022A
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- nylon material
- isolating switch
- switch special
- purpose nylon
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- B29C47/92—
Abstract
The invention discloses a nylon material special for breakers and a preparation method thereof. The nylon material special for breakers is made from the following components of: by weight, 55-62% of nylon resin, 15-25% of a fire retardant, 15-25% of glass fibre, 0.2-0.4% of an anti-oxidant, 0.4-0.8% of a lubricant and 0.2-0.4% of a nucleating agent. The prepared nylon material special for breakers has excellent mechanical properties and good fluidity and is easy to process. The product breaker manufactured by the use of the nylon material can reach UL 94V0 for flame retardation, the glow-wire will not burn at the temperature of 960 DEG C, and CTI can reach 380 V. By the adoption of the high-performance nylon material special for breakers, the breakers can be used more safely and effectively in daily life and production.
Description
[technical field]
The present invention relates to polymeric material field, relate in particular to a kind of isolating switch special-purpose nylon material and preparation method thereof.
[background technology]
Increase along with capacity of distribution transform in the modern building; Distance between the use of large vol bus duct and consumer and power supply is at various factorss such as shortenings; Make the terminal electric current of supply line also in continuous increase; Public buildings such as some high-grade office buildings, office building, hotel and megastore particularly, this type occasion use the quantity of nylon isolating switch (MCB) bigger.MCB has been Duoed defencive function than KS, such as overvoltage, under-voltage etc.Isolating switch is a protectiveness electrical equipment, is used for short circuit of AC and DC circuit overload and ground fault, also can not frequent function circuit.Therefore the nylon isolating switch to the thermotolerance of material, anti-electrically, performance requriements such as flame retardant resistance is very high.And that the conventional circuit breaker material exists is high temperature resistant, high voltage withstanding and problem that machinability is bad, existing materials be difficult to reach 850 ℃ nonflammable, work-ing life is short, used not environmental protection of brominated flame retardant, and cost is very high.
[summary of the invention]
The technical problem that the present invention will solve provides a kind of high voltage withstanding, the isolating switch special-purpose nylon material that flame retardant properties is good.
Another technical problem that will solve of the present invention provides a kind of preparation method of above-mentioned isolating switch special-purpose nylon material.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is, a kind of isolating switch special-purpose nylon material is composed of the following components by weight percentage:
Described nylon resin is PA6.
Described fire retardant is a melamine cyanurate.
Described spun glass is an alkali-free long glass fibres yarn.
Described oxidation inhibitor is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or three (2, the 4-di-t-butyl) phenyl-phosphite.
Described lubricant is a Zinic stearas.
Said nucleator is long-chain carboxylic acid's calcium salt.
A kind of preparing method's of above-mentioned isolating switch special-purpose nylon material technical scheme may further comprise the steps:
A) nylon resin, fire retardant, oxidation inhibitor, lubricant, nucleator are carried out drying;
B) weight percent according to claim 1 weighs raw material;
C) the whole raw materials except that spun glass are mixed in the middling speed mixing machine;
D) thorough mixing is good raw material is sent in the twin screw extruder, adds spun glass by the glass mouth, and the twin screw extruder screw slenderness ratio is not less than 32; Screw speed 300-500 rev/min; Twin screw is extruded working temperature: feeding section 200-230 ℃, 220-240 ℃ of fusion plastification section mixed 200-220 ℃ of homogenizing zone; 220-240 ℃ of melt Conveying metering zone, residence time 0.5-1 minute.。
The isolating switch special-purpose nylon material mechanical property of gained of the present invention is good, and good fluidity is easy to processing, and made goods-isolating switch can reach fire-retardant UL94V0, and 960 ℃ of glowing filaments are nonflammable, and CTI can arrive 380V.This kind of high-performance isolating switch special-purpose nylon material makes short circuiter to use in daily life with in producing more safely and effectively.
[embodiment]
Below in conjunction with embodiment the present invention is done further explanation, but the scope that the present invention requires to protect not only is confined to the described scope of embodiment.
In following examples, nylon resin is polycaprolactam PA6, middle viscosity resin: Yueyang petrochemical industry YH700.
Fire retardant is the expansion type flame retardant of halogen-free environmental, melamine cyanurate: Nantong chemical industry MCA-25.
Spun glass is an alkali-free long glass fibres yarn: megalith 988A.
Oxidation inhibitor is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or three (2, the 4-di-t-butyl) phenyl-phosphite, as: 1010,168.
Lubricant is a Zinic stearas, TAF.
Nucleator is long-chain carboxylic acid's calcium salt CAV102.
Table 1; Embodiment 1-3 proportioning table
Press the proportioning of table 1, nylon resin, fire retardant and other auxiliary agents that drying is crossed in the middling speed mixing machine, mix 5 minutes subsequent use.Then mixed raw materials is added in the meshing in the same way twin screw extruder by hopper, add glass megalith 988A at the glass mouth simultaneously.In the heat transfer of barrel and the high speed shear of screw rod, following material of mixing and conveying and glass carry out sufficient fusion, dispersion and compound.The twin screw extruder screw slenderness ratio is 32,400 rev/mins of screw speeds, and its twin screw is extruded working temperature: feeding section 200-230 ℃; Fusion plastification section temperature is 220-240 ℃; Mix 200-220 ℃ of homogenizing zone, 220-240 ℃ of melt Conveying metering zone, residence time 0.5-1 minute.Through extruding, tie rod, cooling, the pelletizing drying of sieving obtains high-performance isolating switch special-purpose nylon material at last.
The modified engineered plastic that more than makes carries out moulding preparation test by relevant criterion and carries out performance test with the standard batten, and mechanical property, resistance toheat and reactance voltage performance are pressed the ASTM standard, and flame retardant properties is pressed the UL94 standard.
Can find out that from the embodiment test result of table 2 embodiment 1-3 all can be through UL941.6mm V0 test, glowing filament can pass through 960 ℃ of tests, and CTI can reach 380V, and flowability and mechanical property are all fine, and practical application effect is very outstanding.
Table 2: embodiment 1-3 performance test data table
The performance test project | Testing method | Embodiment 1 | Embodiment 2 | Embodiment 3 |
Tensile strength Mpa | ASTM?D-638 | 80 | 93 | 120 |
Elongation at break % | ASTM?D-638 | 3.5 | 2.4 | 2.1 |
Shock strength Mpa | ASTM?D-256 | 60 | 45 | 48 |
Flexural strength Mpa | ASTM?D-790 | 140 | 160 | 175 |
Melting index g/min | ASTM?D-1238 | 60 | 53 | 46 |
Flame retardant properties 1.6mm | UL94 | V0 | V0 | V0 |
Glowing filament ℃ | ASTM?D-5132 | 960 | 960 | 960 |
CTI V | ASTM?F963-07 | 380 | 380 | 380 |
Claims (8)
1. an isolating switch special-purpose nylon material is characterized in that, and is composed of the following components by weight percentage:
2. isolating switch special-purpose nylon material according to claim 1 is characterized in that, described nylon resin is PA6.
3. isolating switch special-purpose nylon material according to claim 1 is characterized in that, described fire retardant is a melamine cyanurate.
4. isolating switch special-purpose nylon material according to claim 1 is characterized in that, described spun glass is an alkali-free long glass fibres yarn.
5. isolating switch special-purpose nylon material according to claim 1 is characterized in that, described oxidation inhibitor is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and/or three (2, the 4-di-t-butyl) phenyl-phosphite.
6. isolating switch special-purpose nylon material according to claim 1 is characterized in that, described lubricant is a Zinic stearas.
7. isolating switch special-purpose nylon material according to claim 1 is characterized in that, said nucleator is long-chain carboxylic acid's calcium salt.
8. the preparation method of the described isolating switch special-purpose nylon material of claim 1 is characterized in that, may further comprise the steps:
A) nylon resin, fire retardant, oxidation inhibitor, lubricant, nucleator are carried out drying;
B) weight percent according to claim 1 weighs raw material;
C) the whole raw materials except that spun glass are mixed in the middling speed mixing machine;
D) thorough mixing is good raw material is sent in the twin screw extruder, adds spun glass by the glass mouth, and the twin screw extruder screw slenderness ratio is not less than 32; Screw speed 300-500 rev/min; Twin screw is extruded working temperature: feeding section 200-230 ℃, 220-240 ℃ of fusion plastification section mixed 200-220 ℃ of homogenizing zone; 220-240 ℃ of melt Conveying metering zone, residence time 0.5-1 minute.
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CN2011101439120A CN102337022A (en) | 2011-05-31 | 2011-05-31 | Nylon material special for breakers and preparation method thereof |
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CN2011101439120A CN102337022A (en) | 2011-05-31 | 2011-05-31 | Nylon material special for breakers and preparation method thereof |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103910999A (en) * | 2014-04-02 | 2014-07-09 | 合肥杰事杰新材料股份有限公司 | High-glowing nylon 6 composition and preparation method thereof |
CN105111735A (en) * | 2015-10-16 | 2015-12-02 | 浙江金海环境技术股份有限公司 | Halogen-free flame-retardant nylon 66 composite and nylon 66 modification method |
CN109467919A (en) * | 2018-09-12 | 2019-03-15 | 河南长征电气有限公司 | It is a kind of for manufacturing the material of high-pressure vacuum breaker shell |
CN116515284A (en) * | 2023-07-05 | 2023-08-01 | 江苏弘盛新材料股份有限公司 | Environment-friendly low-smoke halogen-free flame-retardant modified nylon material and preparation method thereof |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103910999A (en) * | 2014-04-02 | 2014-07-09 | 合肥杰事杰新材料股份有限公司 | High-glowing nylon 6 composition and preparation method thereof |
CN105111735A (en) * | 2015-10-16 | 2015-12-02 | 浙江金海环境技术股份有限公司 | Halogen-free flame-retardant nylon 66 composite and nylon 66 modification method |
CN109467919A (en) * | 2018-09-12 | 2019-03-15 | 河南长征电气有限公司 | It is a kind of for manufacturing the material of high-pressure vacuum breaker shell |
CN116515284A (en) * | 2023-07-05 | 2023-08-01 | 江苏弘盛新材料股份有限公司 | Environment-friendly low-smoke halogen-free flame-retardant modified nylon material and preparation method thereof |
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Application publication date: 20120201 |