CN101948615A - Stress cracking resistant halogen-free flame retardant transparent polycarbonate material - Google Patents
Stress cracking resistant halogen-free flame retardant transparent polycarbonate material Download PDFInfo
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- CN101948615A CN101948615A CN 201010507334 CN201010507334A CN101948615A CN 101948615 A CN101948615 A CN 101948615A CN 201010507334 CN201010507334 CN 201010507334 CN 201010507334 A CN201010507334 A CN 201010507334A CN 101948615 A CN101948615 A CN 101948615A
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Abstract
The invention relates to a stress cracking resistant halogen-free flame retardant transparent polycarbonate material which comprises the following components in percentage by weight: 47.5- 96% of polycarbonate, 1-35% of composite halogen-free flame retardant, 1.0-3.0% of clarifier, 0.1-2.0% of antioxygen, 0.1-2.0% of lubricant and 1.3-5.5% of other auxiliaries. The invention has good composite mechanical performance, does not contain halogen, basically keeps the original transparency of polycarbonate materials, is attractive in appearance and convenient production, and simultaneously meets all the environment requirements, thereby completely improving the competitive strength of products.
Description
Technical field
The present invention relates to a kind of organic polymer composite, more particularly, relate to a kind of halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking.The invention still further relates to the method for the halogen-free anti-flaming transparent polycarbonate material of making this anti-stress cracking.
Background technology
Polycarbonate is a kind of unbodied, the nontoxic transparent thermoplastic polymer of tasteless odorless, and it has machinery and over-all propertieies such as heat and electricity, particularly tough height, and creep is little, and product size is stable, has the excellent high-temperature electrical property.Polycarbonate is widely used in each field of national economy aspect mechano-electronic electrical lighting building safety and the medicine equipment as a kind of engineering plastics with general high-performance.Adopt halogen-free anti-flaming polycarbonate fat material, can significantly improve its range of application, can substitute timber and metal or other materials in a lot of fields and use.And Europe/Japan or the like developed country has started all restrictions of foreign imported product for various reasons at present, has set up a series of barrier, wherein, to the material Halogen requirement of product, is exactly one of them.Therefore cause the more export enterprise of China is seriously perplexed.And seen in the market, perhaps can not guarantee not halogen-containingly to cause environmental protection limited, or cost an arm and a leg and dependency strong, or mechanical property is excellent inadequately, or the like shortcoming.Simultaneously, because the adding of fire retardant tends to seriously reduce the material original transparency.And polycarbonate material self has an inherent defective, is exactly to have big internal stress easily when injection moulding is produced, and causes the final product cracking, and condemnation factor is very high, has obviously strengthened cost.
Summary of the invention
The objective of the invention is to, a kind of halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking is provided, comprehensive mechanical performance is good, and is not halogen-containing, keeps the polycarbonate material original transparency substantially, and product appearance is attractive in appearance, and convenient for production.
Technical scheme provided by the invention is as follows: polycarbonate: 47.5-96%; Composite halogen-free fire retardant: 1-35%; Transparent base: 1.0-3.0%; Oxidation inhibitor: 0.1-2.0%; Lubricant: 0.1-2.0%; Other auxiliary agents: 1.3-5.5%.
The preparation method of the halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking of the present invention, comprise the steps: earlier polycarbonate to be dried with 120 degree, then with oxidation inhibitor, the composite halogen-free fire retardant, transparent base, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 3 minutes, after more in time through parallel parallel dual-screw extruding machine under the screw combinations situation that medium tenacity is sheared, keeping under the good vacuum state, extrude with certain screw speed is mixing, the pelletizing of water-cooled tie rod makes the halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking through screening and dewatering.
The halogen-free anti-flaming transparent polycarbonate material comprehensive mechanical performance of the anti-stress cracking of the present invention is good, not halogen-containing, keeps the polycarbonate material original transparency substantially, product appearance is attractive in appearance, and convenient for production, also meet all environmental requirements, comprehensive like this product competitiveness that improved simultaneously.
Embodiment
Below be the embodiment of the halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one, and a kind of halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking is provided, and forms polycarbonate by weight by following composition: 90.0%, and composite halogen-free fire retardant: 5%; Transparent base: 2.2%; Oxidation inhibitor: 1.0%, lubricant: 0.3%; Other auxiliary agents: 1.5%.
Earlier polycarbonate was dried 4 hours with 120 degree, then with oxidation inhibitor, the composite halogen-free fire retardant, transparent base, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 3 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 even substantially, do not have obvious agglomerate or gather, and then in time through parallel parallel dual-screw extruding machine under the screw combinations situation that medium tenacity is sheared, twin screw extruder uses 36 length-to-diameter ratios, keeping under the good vacuum state, extrude with certain screw speed is mixing, the pelletizing of water-cooled tie rod makes the halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking 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 thereto; 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. the halogen-free anti-flaming transparent polycarbonate material of an anti-stress cracking is characterized in that, forms polycarbonate by weight by following composition: 47.5-96%; Composite halogen-free fire retardant: 1-35%; Transparent base: 1.0-3.0%; Oxidation inhibitor: 0.1-2.0%; Lubricant: 0.1-2.0%; Other auxiliary agents: 1.3-5.5%.
2. the preparation method of the halogen-free anti-flaming transparent polycarbonate material of an anti-stress cracking, it is characterized in that, comprise the steps: earlier polycarbonate to be dried with 120 degree, then with oxidation inhibitor, the composite halogen-free fire retardant, transparent base, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 3 minutes, after more in time through parallel parallel dual-screw extruding machine under the screw combinations situation that medium tenacity is sheared, keeping under the good vacuum state, extrude with certain screw speed is mixing, the pelletizing of water-cooled tie rod makes the halogen-free anti-flaming transparent polycarbonate material of anti-stress cracking through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010507334 CN101948615A (en) | 2010-10-14 | 2010-10-14 | Stress cracking resistant halogen-free flame retardant transparent polycarbonate material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010507334 CN101948615A (en) | 2010-10-14 | 2010-10-14 | Stress cracking resistant halogen-free flame retardant transparent polycarbonate material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101948615A true CN101948615A (en) | 2011-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201010507334 Pending CN101948615A (en) | 2010-10-14 | 2010-10-14 | Stress cracking resistant halogen-free flame retardant transparent polycarbonate material |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701101A (en) * | 2009-11-26 | 2010-05-05 | 苏州市科创聚合物有限公司 | Low-smoke halogen-free flame-retardant polycarbonate and preparation process thereof |
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- 2010-10-14 CN CN 201010507334 patent/CN101948615A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701101A (en) * | 2009-11-26 | 2010-05-05 | 苏州市科创聚合物有限公司 | Low-smoke halogen-free flame-retardant polycarbonate and preparation process thereof |
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Application publication date: 20110119 |