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Infrared ray-penetrable polymethyl methacrylate composition

A polymethyl methacrylate and infrared technology, applied in the field of polymethyl methacrylate composition, can solve the problem of high manufacturing cost and achieve the effects of low manufacturing cost, excellent mechanical properties and high transmittance

Inactive Publication Date: 2014-08-20
宁波力达得为高分子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They are important infrared optical materials for forward-looking infrared systems (FLIRs), laser windows, and missile fairings, but are expensive to manufacture

Method used

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  • Infrared ray-penetrable polymethyl methacrylate composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 98.5Kg of polymethyl methacrylate, 0.2Kg of calcium fluoride, 0.3Kg of magnesium fluoride, 1Kg of organic silicon surface modifier and 0.2Kg of carbon black;

[0031] Mix polymethyl methacrylate and carbon black evenly, and perform surface treatment on calcium fluoride, magnesium fluoride and organic silicon surface modifier;

[0032] Stir each material at high speed (900r / min) in a high stirring pot for 5 minutes. After preliminary mixing, add it into the co-rotating twin-screw extruder from the feeding port, and the co-rotating twin-screw extruder rushes into the feed section to the machine head The temperature is 190°C, 220°C, 255°C, 265°C, 255°C, 250°C, 245°C, 240°C in sequence, the die head temperature is 260°C, the material residence time is 3min, the pressure is 20MPa, and the screw speed is 350 rpm. After being extruded by a co-rotating twin-screw extruder, it is granulated and packaged to obtain an infrared-transmitting polymethyl methacrylate composition...

Embodiment 2

[0034] Weigh polymethyl methacrylate 98.3Kg, calcium fluoride 0.2Kg, zinc fluoride 0.3Kg, organosilicon surface modifier 1Kg and iron oxide 0.2Kg; Prepare the polymethylmethacrylate through the infrared in the same way as in Example 1 methacrylate compositions.

Embodiment 3

[0036] Weigh 98.6Kg of polymethyl methacrylate, 0.2Kg of calcium fluoride, 0.3Kg of zinc fluoride, 1Kg of organic silicon surface modifier, 0.2Kg of iron oxide and 2-hydroxy-4-n-octyloxybenzophenone 0.1Kg; Prepare the infrared-transmitting polymethyl methacrylate composition in the same manner as in Example 1.

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Abstract

The invention provides an infrared ray-penetrable polymethyl methacrylate composition. The infrared ray-penetrable polymethyl methacrylate composition comprises polymethyl methacrylate, an infrared ray penetration promoter and a surface hardness modifier. The infrared ray-penetrable polymethyl methacrylate composition has high penetration rates of infrared rays having different wavelengths, has the infrared ray penetration rates more than 80% and a visible light penetration rate less than 1%, retains excellent mechanical properties, thermal properties and environmental suitability of polymethyl methacrylate, and has a low manufacturing cost.

Description

technical field [0001] The invention relates to a polymer composition, in particular to an infrared-transmitting polymethyl methacrylate composition. Background technique [0002] After Newton obtained the solar spectrum with a prism, after more than a hundred years, the British astronomer W. Herschel, in his experiment on the thermal effect of the solar spectrum in 1800, found that the maximum position of the thermal effect is at the infrared end of the visible spectrum. Called "invisible light" then, by 1835 Ampere called it infrared. Infrared is also a kind of electromagnetic wave, and its wavelength is between 0.75 and 1000 μm. [0003] In different research fields such as military, space, industrial technology, etc., according to the different generation mechanisms, transmission characteristics and detection methods of infrared radiation, and considering the specific window of infrared transmission in the atmosphere (that is, the corresponding transparent band in the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08K3/16C08K3/30
Inventor 王鑫王志
Owner 宁波力达得为高分子科技有限公司
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