Polylactic acid (PLA)-based fully degradable material special for anti-glare board and preparation method for PLA-based fully degradable material

A completely degradable and special-purpose material technology, which is applied in the field of PLA-based completely degradable anti-glare sheet special materials and its preparation, to achieve low cost, good performance, and no environmental pollution

Inactive Publication Date: 2012-09-19
SHANDONG TIANYE PLASTICIZATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no such special material supply market at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] Preparation of toughening and strengthening modifier: use 0.15-0.70μm ultra-fine CaCO 3 , dried at 95°C for 3h. Then in the mixer, using CaCO 3 Adding 1.5% titanate coupling agent in the form of atomization to CaCO 3 Carry out activation treatment, activation time 1.0h.

[0026] Preparation of additive package: Weigh a certain amount of dried PLA, add it to the mixer, and add tetrakis[3-(3'5'-di-tert-butyl-4'-hydroxyphenyl)propionic acid] in proportion Pentaerythritol ester (antioxidant 1010), UV-531, stearic acid, phthalocyanine green and other additives, after stirring evenly, use a twin-screw extruder to extrude at a temperature of 130-160°C and a speed of 60r / min. Granulation to make additive package.

Embodiment 1

[0028] Percentage by mass: polylactic acid: toughening and strengthening modifier: antioxidant 1010: 2-hydroxy-4-n-octyloxybenzophenone (UV-531): stearic acid: phthalocyanine green: acetyl lemon Acetate tri-n-butyl ester=64%: 25%: 0.3%: 0.25%: 2.3%: 0.15%: 8.0% The proportions were weighed respectively, and then added to the mixer and mixed for 15 minutes. Then add it into a twin-screw extruder to form granules, the granulation temperature is controlled at 130-145°C, the screw speed is controlled at 40-50r / min, and the special material is obtained after cooling. After the special material is properly dried, it is directly added to a special extruder for anti-glare sheet forming. The processing temperature is 150-170°C. The extruded sheet is cooled, shaped and cut to obtain the anti-glare sheet. The technical properties of the anti-glare board made of this special material are: tensile strength 64MPa, elongation at break 380%, impact strength 18Kj / m 2 , Vicat softening point...

Embodiment 2

[0030] Percentage by mass: polylactic acid: toughening and strengthening modifier: antioxidant 1010: 2-hydroxy-4-n-octyloxybenzophenone (UV-531): stearic acid: phthalocyanine green: acetyl lemon Acetate tri-n-butyl ester=68%: 20%: 0.35%: 0.2%: 2.6%: 0.1%: 8.75% The proportions were weighed respectively, and then added to the mixer and mixed for 5 minutes. Then add it into a twin-screw extruder to form granules. The granulation temperature is controlled at 145-165°C, the screw speed is controlled at 50-60r / min, and the special material is obtained after cooling. After the special material is properly dried, it is directly added to a special extruder for anti-glare sheet forming. The processing temperature is 150-170°C. The extruded sheet is cooled, shaped and cut to obtain the anti-glare sheet. The technical performance of the anti-glare board made of this special material is: tensile strength 65MPa, elongation at break 410%, impact strength 20Kj / m 2 , Vicat softening point ...

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Abstract

The invention relates to a polylactic acid (PLA)-based fully degradable material special for an anti-glare board and a preparation method for the PLA-based fully degradable material, and belongs to the technical field of the modification of polymer materials. The invention is characterized in that the material is prepared from the following raw materials in percentage by mass: 60 to 68 percent of polylactic acid, 20 to 30 percent of toughened and reinforced modifier, 0.25 to 0.35 percent of tetra[3-(3',5'-ditert-butyl-4'-hydroxylphenyl)propionic acid]pentaerythritol ester, 0.2 to 0.3 percent of 2-hydroxy-4-(octyloxy)benzophenone, 2.0 to 2.6 percent of stearic acid, 0.1 to 0.2 percent of phthalocyanine green and 5 to 11 percent of acetyl-tri-n-butyl citrate. The special material has full degradation performance and does not pollute the environment. Three basic elements, namely 'blowing resistance, impact resistance and unchanged color' which are used for the making of anti-glare boards can be met, so the material is a preferred high-quality material for the making of third-generation anti-glare boards.

Description

technical field [0001] The invention relates to a PLA-based completely degradable anti-glare plate special material and a preparation method thereof, belonging to the technical field of polymer material modification. Background technique [0002] Anti-glare panels are highway The above is a traffic safety product installed on the central divider in order to solve the glare of oncoming vehicle lights. [0003] With the rapid development of high-speed kilometers in our country, anti-glare panels are also widely used. my country's anti-glare panels have experienced anti-glare panels made of the first generation of steel anti-glare panels (iron fences), the second generation of plastic anti-glare panels (high-density polyethylene), and fiberglass anti-glare panels (glass fiber reinforced plastics). Although great achievements have been made in the design, production and application of these products, there are still many problems to be solved in the actual use of these product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K13/06C08K9/04C08K3/26C08K5/134C08K5/132C08K5/09C08K5/11B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 付宇经张宝善宣兆志李宪刚张建全刘献军
Owner SHANDONG TIANYE PLASTICIZATION
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