CN102888104A - Manufacturing process of high CTI (comparative tracking index) flame-retardant nylon 66 material - Google Patents
Manufacturing process of high CTI (comparative tracking index) flame-retardant nylon 66 material Download PDFInfo
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- CN102888104A CN102888104A CN2012104370672A CN201210437067A CN102888104A CN 102888104 A CN102888104 A CN 102888104A CN 2012104370672 A CN2012104370672 A CN 2012104370672A CN 201210437067 A CN201210437067 A CN 201210437067A CN 102888104 A CN102888104 A CN 102888104A
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Abstract
The invention relates to a manufacturing process of a high CTI (comparative tracking index) flame-retardant nylon 66 material. The high CTI flame-retardant nylon 66 material is composed of the following components in percentage by weight: 47.5-96% of nylon 66, 3-35% of phosphorus-nitrogen-bromine composite flame retardant, 0.5-15% of flame-retardant synergist, 0.1-2.0% of antioxidant, 0.1-2.0% of lubricant, 5-40% of alkali-free glass fiber and 0.3-5.5% of other assistants. According to the invention, the green environment-friendly high CTI flame-retardant reinforced nylon 66 material has fine comprehensive mechanical properties, fine flame retardancy and fire resistance and favorable injection molding and extruding processability; both the production and the procurement are convenient; and meanwhile, all the environmental requirements are met. Thus, the competitive power of the product is comprehensively improved.
Description
Technical field
The present invention relates to a kind of organic polymer composite, more particularly, relate to a kind of high CTI fire-retardant Nylon 66 material manufacture craft.The invention still further relates to the method for making high CTI flame-retardant reinforced nylon 66 materials of this environmental protection.
Background technology
Glass fiber enhanced nylon 66 material has extraordinary physical strength, has simultaneously good injection moulding and extrudes processibility, has been widely used.Increase on its basis the fire-retardant fireproof performance, further enlarged Application Areas.But the creepage trace index (CTI) of general flame-retardant reinforced nylon 66 is not high in the market, generally only has between the 100-275 volt, causes having limited the application for some field of electronics of relatively having relatively high expectations.These fields have to adopt the special engineering plastics material expensive, that processibility is bad at present.The art of this patent is for this present situation, carried out the systematic research development, obtain positive effect: keeping under the good physical strength of flame-retardant reinforced nylon 66 materials and processibility, the good fire-retardant fireproof performance prerequisite, its CTI value is brought up to more than 500, can reach the CTI effect of most special engineering plastics, and material price and common flame-retardant reinforced nylon 66 material prices differ very little, well below general special engineering plastics price.
Summary of the invention
The object of the invention is to, provide a kind of environmental protection high CTI flame-retardant reinforced nylon 66 materials, comprehensive mechanical performance is good, and fire-retardant fireproof is good, the good injection moulding of tool and extrude processing characteristics.
Technical scheme provided by the invention is as follows: nylon 66:47.5-96%; Phosphorus nitrogen bromine composite flame-retardant agent: 3-35%; Fire retarding synergist: 0.5-15%; Oxidation inhibitor: 0.1-2.0%; Lubricant: 0.1-2.0%; Alkali-free glass fiber: 5-40%; Other auxiliary agents: 1.3-5.5%.
The high CTI flame-retardant reinforced nylon 66 material preparation methods of environmental protection of the present invention, comprise the steps: first with nylon 66 and oxidation inhibitor, phosphorus nitrogen bromine composite flame-retardant agent, fire retarding synergist, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 5 minutes, after more in time through the parallel equidirectional two-screw forcing machine in the screw combinations situation that medium tenacity is sheared, add in proportion alkali-free glass fiber by the side in the forcing machine stage casing, keeping under the certain vacuum pressure, mixing extrusion, water cooling bracing pelletizing (also can adopt the underwater cutpellet mode) makes high CTI flame-retardant reinforced nylon 66 materials of environmental protection through screening and dewatering.
High CTI flame-retardant reinforced nylon 66 materials of environmental protection of the present invention, comprehensive mechanical performance is good, and fire-retardant fireproof is good, the good injection moulding of tool and extrude processing characteristics, and production procurement is convenient, also meets all environmental requirements, comprehensive like this product competitiveness that improved simultaneously.
Embodiment
Below be the embodiment of high CTI flame-retardant reinforced nylon 66 materials of environmental protection of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one, provides a kind of environmental protection high CTI flame-retardant reinforced nylon 66 materials, forms by weight nylon 66:43.5% by following composition; Phosphorus nitrogen bromine composite halogen-free fire retardant: 17%; Fire retarding synergist: 5%; Oxidation inhibitor: 0.6%; Lubricant: 0.4%; Other auxiliary agents: 3.5%; Alkali-free glass fiber: 30%.
First with nylon 66 and oxidation inhibitor, phosphorus nitrogen bromine composite flame-retardant agent, fire retarding synergist, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 5 minutes, mixer adopts low speed mixing, stainless steel, paddle should with the barrel gap less than 0.5 centimetre, the supplementary material mixed effect should visual various particles and powder substantially even, do not have obvious agglomerate or gather, and then in time through the parallel equidirectional two-screw forcing machine in the screw combinations situation that medium tenacity is sheared, add in proportion alkali-free glass fiber by the side in the forcing machine stage casing, twin screw extruder uses 36 length-to-diameter ratios, keeping under the certain vacuum pressure, mixing extrusion, the water cooling bracing pelletizing makes high CTI flame-retardant reinforced nylon 66 materials of environmental protection through screening and dewatering.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (2)
1. one kind high CTI fire-retardant Nylon 66 material manufacture craft is characterized in that, is made of by weight nylon 66:47.5-96% following composition; Phosphorus nitrogen bromine composite flame-retardant agent: 3-35%; Fire retarding synergist: 0.5-15%; Oxidation inhibitor: 0.1-2.0%; Lubricant: 0.1-2.0%; Alkali-free glass fiber: 5-40%; Other auxiliary agents: 1.3-5.5%.
2. one kind high CTI fire-retardant Nylon 66 material manufacture craft, it is characterized in that, comprise the steps: first with nylon 66 and oxidation inhibitor, phosphorus nitrogen bromine composite halogen-free fire retardant, fire retarding synergist, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 5 minutes, after more in time through the parallel equidirectional two-screw forcing machine in the screw combinations situation that medium tenacity is sheared, add in proportion alkali-free glass fiber by the side in the forcing machine stage casing, keeping under the certain vacuum pressure, mixing extrusion, water cooling bracing pelletizing (also can adopt the underwater cutpellet mode) makes high CTI flame-retardant reinforced nylon 66 materials of environmental protection through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104370672A CN102888104A (en) | 2012-11-05 | 2012-11-05 | Manufacturing process of high CTI (comparative tracking index) flame-retardant nylon 66 material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104370672A CN102888104A (en) | 2012-11-05 | 2012-11-05 | Manufacturing process of high CTI (comparative tracking index) flame-retardant nylon 66 material |
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| Publication Number | Publication Date |
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| CN102888104A true CN102888104A (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012104370672A Pending CN102888104A (en) | 2012-11-05 | 2012-11-05 | Manufacturing process of high CTI (comparative tracking index) flame-retardant nylon 66 material |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955657A (en) * | 2010-10-14 | 2011-01-26 | 苏州市科创聚合物有限公司 | Environment-friendly high-CTI flame-retardant reinforced nylon 6 material |
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- 2012-11-05 CN CN2012104370672A patent/CN102888104A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955657A (en) * | 2010-10-14 | 2011-01-26 | 苏州市科创聚合物有限公司 | Environment-friendly high-CTI flame-retardant reinforced nylon 6 material |
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Application publication date: 20130123 |