CN102888087A - Technology for making polycarbonate material capable of preventing stress cracking - Google Patents
Technology for making polycarbonate material capable of preventing stress cracking Download PDFInfo
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- CN102888087A CN102888087A CN2012104373806A CN201210437380A CN102888087A CN 102888087 A CN102888087 A CN 102888087A CN 2012104373806 A CN2012104373806 A CN 2012104373806A CN 201210437380 A CN201210437380 A CN 201210437380A CN 102888087 A CN102888087 A CN 102888087A
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- polycarbonate material
- stress cracking
- polycarbonate
- material capable
- stress
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Abstract
The invention relates to a technology for making polycarbonate material capable of preventing stress cracking; and the material comprises the components by weight percent: 87.5-96% of polycarbonate, 1-35% of stress releasing agent, 0.1-2.0% of antioxidant, 0.1-2.0% of lubricating agent and 0.3-5.5% of other auxiliary agents. The environment-friendly transparent polycarbonate material capable of preventing stress cracking is good in comprehensive mechanical property, maintains the original transparency of the polycarbonate material, and is attractive in product appearance, convenient to produce and accords with all environmental protection requirements, thus comprehensively improving the product competitiveness.
Description
Technical field
1, the present invention relates to a kind of organic polymer composite, more particularly, relate to a kind of polycarbonate material technique of anti-stress cracking.The invention still further relates to the method for the transparent polycarbonate material of making the anti-stress cracking of this environmental protection.
Background technology
2, polycarbonate is a kind of unbodied, the nontoxic transparent thermoplastic polymer of tasteless odorless, and it has the over-all propertieies, particularly tough height such as mechanical and hot and electric, and creep is little, and product size is stable, has good electrical properties in high temperatures.Polycarbonate is widely used in all fields of national economy aspect mechano-electronic electrical lighting building safety and the medicine equipment as a kind of engineering plastics of excellent combination property.And polycarbonate material self has an intrinsic defective, is exactly to have easily larger internal stress when injection moulding is produced, and causes the final product cracking, and condemnation factor is very high, has obviously strengthened cost.The transparent polycarbonate material of the anti-stress cracking that the present technique invention is researched and developed in order effectively to overcome this phenomenon exactly.
Summary of the invention
3, the object of the invention is to, the transparent polycarbonate material of the anti-stress cracking of a kind of environmental protection is provided, comprehensive mechanical performance is good, the basic original transparency of polycarbonate material that keeps, product appearance is attractive in appearance, and convenient for production, also meet all environmental requirements, comprehensive like this product competitiveness that improved simultaneously.
4, technical scheme provided by the invention is as follows: polycarbonate: 87.5-96%; Stress relief agent: 1-15%; Oxidation inhibitor: 0.1-2.0%; Lubricant: 0.1-2.0%; Other auxiliary agents: 1.3-5.5%.
5, the preparation method of the transparent polycarbonate material of the anti-stress cracking of environmental protection of the present invention, comprise the steps: first polycarbonate to be dried with 120 degree, then with oxidation inhibitor, the stress relief agent, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, after more in time through the parallel equidirectional two-screw forcing machine in the screw combinations situation that medium tenacity is sheared, keeping under the good vacuum state, with certain screw speed mixing extrusion, the water cooling bracing pelletizing makes the transparent polycarbonate material of the anti-stress cracking of environmental protection through screening and dewatering.
6, the transparent polycarbonate material of the anti-stress cracking of environmental protection of the present invention, comprehensive mechanical performance is good, substantially keeps the original transparency of polycarbonate material, product appearance is attractive in appearance, and convenient for production, also meet all environmental requirements, comprehensive like this product competitiveness that improved simultaneously.
Embodiment
7, be the embodiment of the transparent polycarbonate material of the anti-stress cracking of environmental protection of the present invention below, therefore do not limit protection scope of the present invention.
8, embodiment one, and the transparent polycarbonate material of the anti-stress cracking of a kind of environmental protection is provided, and is made of by weight polycarbonate following composition: 92.2%; Stress relief agent: 5%; Oxidation inhibitor: 1.0%, lubricant: 0.3%; Other auxiliary agents: 0.5%.
9, first polycarbonate was dried 4 hours with 120 degree, then with oxidation inhibitor, the stress relief agent, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 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, twin screw extruder uses 36 length-to-diameter ratios, keeping under the good vacuum state, with certain screw speed mixing extrusion, the water cooling bracing pelletizing makes the transparent polycarbonate material of the anti-stress cracking of environmental protection through screening and dewatering.
10, 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. the polycarbonate material technique of an anti-stress cracking is characterized in that, is made of by weight polycarbonate following composition: 87.5-96%; Stress relief agent: 1-35%; Oxidation inhibitor: 0.1-2.0%; Lubricant; 0.1-2.0%; Other auxiliary agents: 1.3-5.5%.
2. the polycarbonate material technique of an anti-stress cracking, it is characterized in that, comprise the steps: first polycarbonate to be dried with 120 degree, then with oxidation inhibitor, stress relief agent, lubricant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, after more in time through the parallel equidirectional two-screw forcing machine in the screw combinations situation that medium tenacity is sheared, keeping under the good vacuum state, with certain screw speed mixing extrusion, the water cooling bracing pelletizing makes the transparent polycarbonate material of the anti-stress cracking of environmental protection through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104373806A CN102888087A (en) | 2012-11-05 | 2012-11-05 | Technology for making polycarbonate material capable of preventing stress cracking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104373806A CN102888087A (en) | 2012-11-05 | 2012-11-05 | Technology for making polycarbonate material capable of preventing stress cracking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102888087A true CN102888087A (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104373806A Pending CN102888087A (en) | 2012-11-05 | 2012-11-05 | Technology for making polycarbonate material capable of preventing stress cracking |
Country Status (1)
| Country | Link |
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| CN (1) | CN102888087A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955643A (en) * | 2010-10-14 | 2011-01-26 | 苏州市科创聚合物有限公司 | Green, environment-friendly and stress crack resistant transparent polycarbonate material |
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2012
- 2012-11-05 CN CN2012104373806A patent/CN102888087A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955643A (en) * | 2010-10-14 | 2011-01-26 | 苏州市科创聚合物有限公司 | Green, environment-friendly and stress crack resistant transparent polycarbonate material |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130123 |