CN1990550A - High phase ratio creepage tracking index composite enhancement nylon 66 composition - Google Patents
High phase ratio creepage tracking index composite enhancement nylon 66 composition Download PDFInfo
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- CN1990550A CN1990550A CN 200510112124 CN200510112124A CN1990550A CN 1990550 A CN1990550 A CN 1990550A CN 200510112124 CN200510112124 CN 200510112124 CN 200510112124 A CN200510112124 A CN 200510112124A CN 1990550 A CN1990550 A CN 1990550A
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- nylon
- phase ratio
- high phase
- tracking index
- creepage tracking
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Abstract
The invention relates to a composite intensified nylon 66 combination with a high relative leakage current index. It comprises a mixture, and the components and the proportion of them by weight are as follows: nylon 66 40- 75%, glass fiber 10- 30%, kaolin 10- 30%, compatibilizer 1- 10%, anti-oxidation agent 0- 1%, and lubricating agent 0- 1%. The preparing process comprises: weighing raw material according to weight proportion; putting raw material expect the glass fiber into high mixing machine for mixing 2- 5 minutes; discharging; adding glass fiber into mixted material, putting them into screw compressor for extrusion, the rotation speed of screw compressor is 180- 600 r/ m, and the temperature is 240- 280 Deg. C. The invention is characterized by good mechanical property, and as high electrical insulating propertyas 600 V ecaluted with relative leakage current index, good rigidity, thermal resistance and stable size.
Description
Technical field
The present invention relates to a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition, this material has excellent comprehensive mechanical properties and high phase ratio creepage tracking index, be applicable to electrical part product with high requirement, but goods such as injection moulding low-voltage vacuum contactor, isolating switch, low-tension switch, the electric element of thin-walled belong to the modified polyamide technical field.
Technical background
Nylon 66 is even thermoplastic polyesters that a kind of molecular structure includes 6 symmetrical methylene radical, have high strength, wear-resisting, anti-solvent, advantage such as self lubricity is good and the use temperature scope is wide, be one of the widest engineering plastics of purposes, be widely used in various electronic electric equipments and household appliances.
Along with developing rapidly of the electric industry of China, the input energetically of capital construction, growing for the demand of high electric insulation performance enhancement engineering material.All need to have the engineering plastics of good comprehensive mechanical property, electrical insulation capability as low-voltage vacuum contactor, isolating switch, low-tension switch, the electric element of thin-walled etc., and wherein with the consumption maximum of polyamide material.Pure nylon material self has the excellent electric insulating energy, but through after the various modifications, its electrical insulation capability can sharply descend.As: the phase ratio creepage tracking index of exosyndrome material insulating property (CTI) can drop to 225V even lower from 600V, has directly influenced its application in electric field.
Summary of the invention
The object of the present invention is to provide to have good electrical insulation capability and mechanical property, can be used for a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition of low-voltage apparatus material.
For realizing above purpose, technical scheme of the present invention provides a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition, is made up of a mixture, and its weight proportion consists of:
Nylon 66 40-75%,
Glass fibre 10-30%,
Kaolin 10-30%,
Compatilizer 0-10%,
Oxidation inhibitor 0-1%,
Lubricant 0-1%.
Wherein the relative viscosity of nylon 66 slice is 2.4-3.8 nylon S, and amido content is 30-90meq/kg, and content of carboxyl end group is 30-85meq/kg; Glass fibre is an alkali free glass fibre, and handle through silane coupling agent on its surface; Kaolinic particle diameter is the 800-1500 order; Compatilizer is the oligopolymer of the graft polymerization of polypropylene or terpolymer EP rubber grafting unsaturated acid or acid anhydrides, is PP-g-MAH, and its melting index is 0.5-150g/10min, and percentage of grafting is 0.5-1%; Oxidation inhibitor is Hinered phenols antioxidant, is 1010, also can be composite with phosphite ester kind antioxidant, and be 1010/168 (1: 1); Lubricant is a stearic amide.
Preparation technology of the present invention is:
(1) weighs raw material by weight ratio;
(2) remove glass fibre, other raw materials were put into high-speed mixer and mixing 2-5 minute;
(3) discharging;
(4) raw materials mixed is added glass fibre screw rod machine extruding pelletization, the rotating speed of screw rod machine is 180-600 rev/min, and temperature is 240-280 ℃.
Heat-resisting and the mechanical property of nylon 66 self can not satisfy its application on electrical part fully, and the adding of glass fibre can improve the comprehensive mechanical property and the thermal characteristics of polymeric amide significantly, makes material can reach the engineering level and uses.
The adding of compatilizer can improve the adhesive capacity of polymkeric substance and glass fibre, and making respectively is on good terms obtains better dispersion effect, and performance is synergy better.
The mechanical property that kaolin can improve material can improve Drawing abillity and appearance property simultaneously.
Oxidation inhibitor makes nylon 66 have good processing stability in the course of processing, avoids color and luster, performance to change.
Lubricant can improve processing characteristics.
The present invention adopts nylon 66 as matrix resin, prepares a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition, has solved the influence of fire retardant to nylon 66 electrical insulation capabilities.
Advantage of the present invention is to improve the mechanical property and the electrical insulation capability of polyamide 66 by compound enhancing, and electrical insulation capability estimates with relative discharge tracking index (CTI) and can reach more than the 600V, to satisfy the performance requriements of low-voltage apparatus.
Specific embodiments
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1 and 2: with nylon 66 is matrix resin, and compatilizer is PP-g-MAH.
Proportioning 1-2 (weight %) (table 1)
| Material name | Proportioning 1 | Proportioning 2 |
| Nylon 66 | 54 | 65 |
| Alkali free glass fibre | 20 | 15 |
| Kaolin | 20 | 15 |
| PP-g-MAH | 5 | 4 |
| Oxidation inhibitor is 1010/168 (1: 1) | 0.5 | 0.5 |
| Stearic amide | 0.5 | 0.5 |
Said components was put into high-speed mixer and mixing 4 minutes in proportion except that glass fibre, add glass fibre screw extrusion press extruding pelletization then, processing temperature is at 270 ℃, and the screw rod revolution is at 450 rev/mins.
A kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition to embodiment 1 and embodiment 2 gained is tested, and the performance comparison of its test is as follows:
Measuring mechanical property is according to the ASTM standard, and electrical insulation capability is tested according to the UL94 standard.
| Project | Embodiment 1 | Embodiment 2 |
| Tensile strength M nylon | 145.6 | 135.3 |
| Flexural strength M nylon | 190.8 | 182.6 |
| Modulus in flexure M nylon | 9300 | 9100 |
| Shock strength J/M | 70 | 85 |
| CTI | 600 | 600 |
Claims (8)
1. a high phase ratio creepage tracking index composite enhancement nylon 66 composition is characterized in that, is made up of a mixture, and its weight proportion consists of:
Nylon 66 40-75%,
Glass fibre 10-30%,
Kaolin 10-30%,
Compatilizer 0-10%,
Oxidation inhibitor 0-1%,
Lubricant 0-1%.
2. a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition according to claim 1, it is characterized in that, the relative viscosity of described nylon 66 slice is 2.4-3.8 nylon S, and amido content is 30-90meq/kg, and content of carboxyl end group is 30-85meq/kg.
3. a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition according to claim 1 is characterized in that described glass fibre is an alkali free glass fibre, and handle through silane coupling agent on its surface.
4. a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition according to claim 1 is characterized in that described kaolin particle diameter is the 800-1500 order.
5. a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition according to claim 1, it is characterized in that, described compatilizer is the oligopolymer of the graft polymerization of polypropylene or terpolymer EP rubber grafting unsaturated acid or acid anhydrides, be PP-g-MAH, its melting index is 0.5-150g/10min, and percentage of grafting is 0.5-1%.
6. a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition according to claim 1 is characterized in that described oxidation inhibitor is Hinered phenols antioxidant, is 1010, also can be composite with phosphite ester kind antioxidant, and be 1010/168 (1: 1).
7. a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition according to claim 1 is characterized in that described lubricant is a stearic amide.
8. a kind of high phase ratio creepage tracking index composite enhancement nylon 66 composition according to claim 1 is characterized in that its preparation technology is:
(1) weighs raw material by weight ratio;
(2) remove glass fibre, other raw materials were put into high-speed mixer and mixing 2-5 minute;
(3) discharging;
(4) raw materials mixed is added glass fibre screw rod machine extruding pelletization, the rotating speed of screw rod machine is 180-600 rev/min, and temperature is 240-280 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112124 CN1990550A (en) | 2005-12-28 | 2005-12-28 | High phase ratio creepage tracking index composite enhancement nylon 66 composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112124 CN1990550A (en) | 2005-12-28 | 2005-12-28 | High phase ratio creepage tracking index composite enhancement nylon 66 composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1990550A true CN1990550A (en) | 2007-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200510112124 Pending CN1990550A (en) | 2005-12-28 | 2005-12-28 | High phase ratio creepage tracking index composite enhancement nylon 66 composition |
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Cited By (5)
| 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 |
| CN102382467A (en) * | 2011-11-25 | 2012-03-21 | 深圳市科聚新材料有限公司 | High-temperature and heat-ageing resistant PA66 material and preparation method thereof |
| CN101875780B (en) * | 2009-11-19 | 2012-07-25 | 深圳市科聚新材料有限公司 | Polyamide composite material and preparation method thereof |
| CN103865254A (en) * | 2014-04-08 | 2014-06-18 | 南京聚隆科技股份有限公司 | Nylon composite material for electric power fitting and preparation method of nylon composite material |
| CN105504799A (en) * | 2016-01-20 | 2016-04-20 | 惠州市华聚塑化科技有限公司 | Nylon composite material |
-
2005
- 2005-12-28 CN CN 200510112124 patent/CN1990550A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875780B (en) * | 2009-11-19 | 2012-07-25 | 深圳市科聚新材料有限公司 | Polyamide composite material and preparation method thereof |
| 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 |
| CN102382467A (en) * | 2011-11-25 | 2012-03-21 | 深圳市科聚新材料有限公司 | High-temperature and heat-ageing resistant PA66 material and preparation method thereof |
| CN103865254A (en) * | 2014-04-08 | 2014-06-18 | 南京聚隆科技股份有限公司 | Nylon composite material for electric power fitting and preparation method of nylon composite material |
| CN105504799A (en) * | 2016-01-20 | 2016-04-20 | 惠州市华聚塑化科技有限公司 | Nylon composite material |
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