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Filling masterbatch used in biodegradable plastic, and preparation method thereof

A biodegradable plastic, filling masterbatch technology, applied in rayon manufacturing, fiber chemical characteristics, textiles and papermaking, etc., can solve problems such as poor application performance, achieve high-efficiency filling capacity, maintain physical and mechanical properties, and reduce costs.

Inactive Publication Date: 2012-06-27
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to obtain a special filling masterbatch for biodegradable plastics, which is specially used in biodegradable plastics and its products, and can overcome the disadvantages of poor application performance of traditional plastic general-purpose filling masterbatches in degradable plastics; another aspect of the present invention One purpose is to provide the preparation method of above-mentioned filling masterbatch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2 and comparative example 1-2

[0038]Shown in table 1 is the component ratio and measurement result of embodiment 1-2 and comparative example 1-2, each component is put into the high mixer respectively, first low-speed stirring 5 minutes, then high-speed stirring 3 minutes, mixing After uniformity, it is added to the twin-screw extruder. The diameter of the extruder is 65mm, the length-to-diameter ratio is 36:1, and there are 9 heating zones and a vacuum exhaust device. The following operating conditions are selected for the extrusion process :

[0039] Temperature setting: 80°C / 150°C / 190°C / 190°C / 190°C / 190°C / 190°C / 190°C / 170°C; feeding speed: 100KG / H; screw speed: 300RPM; vacuum pressure: 0.4 atmosphere.

[0040] After the strip extruded product of the extruder is made into granules by underwater hot cutting, it is dried in a dehumidifying dryer at 80°C for 2 hours to obtain Example 1-2 and Comparative Example 1-2, and the average particle size of the filler is measured. The composition and average particle...

Embodiment 3-5 and comparative example 3

[0044] The compositions listed in Table 2 are used in the formulations of Examples 3-5 and Comparative Example 3, and the measured values ​​and component ratios of the corresponding physical properties are also listed in Table 2. As can be seen from Table 2, the addition of lubricants can effectively prevent fillers from The agglomeration of the filler makes the filler have a higher dispersion performance.

[0045] Table 2

[0046] Example 3 Example 4 Example 5 Comparative example 3 PBS 50 50 50 50 Silica (200nm) 40 40 40 40 stearic acid 10 – – – Calcium stearate – 10 – – Oleamide – – 10 – Average particle size (nm) 200 100 150 400

Embodiment 6-8 and comparative example 4

[0048] The compositions listed in Table 3 are used in the formulations of Examples 6-8 and Comparative Example 4, and the measured values ​​of the corresponding physical properties are also listed in Table 3. Table 3 also shows that the addition of epoxy-based acrylic copolymers can significantly improve the content of fillers. High temperature performance.

[0049] table 3

[0050] Example 6 Example 7 Example 8 Comparative example 4 PCL 80 80 80 82 Barium sulfate (250nm) 10 10 10 10 Epoxy Acrylic Copolymer 0.5 1.5 2.0 – stearic acid 9.5 – 4 4 Erucamide – 8.5 4 4 Average particle size (nm) 100 120 150 200 initial decomposition temperature 255 250 260 205

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Abstract

The invention discloses a filling masterbatch used in biodegradable plastic. The masterbatch is composed of components of, by mass: (A) 20.0-80.0% of biodegradable polyester, (B) 1.0-80.0% of a filling material, (C) 0.1-10.0% of a lubricating agent, (D) 0.1-5.0% of a high-temperature-resistant agent, and (E) 0.1-5.0% of a hydrolysis-resisting agent. The masterbatch is advantaged in that: (1) compatibility of the carrier is consistent with that of the biodegradable plastic, such that the filling masterbatch has excellent dispersity in the biodegradable plastic; (2) the obtained filling masterbatch satisfies an application requirement of biodegradable plastic En13432; when the filling masterbatch is mixed with biodegradable plastic, the biodegradation performance of the original material is completely maintained; (3) high temperature and hydrolysis resistances of the filling masterbatch are good, and the filling masterbatch has high physical mechanical properties; (4) with the filling masterbatch, while the cost of biodegradable plastic is reduced, physical chemical properties especially the biodegradation performance of the filled material are maintained.

Description

technical field [0001] The invention relates to a special filling masterbatch for biodegradable plastics. The filling masterbatch is specially used in biodegradable plastics and its products. The filling masterbatch has high-efficiency filling ability of easy dispersion, high temperature resistance and hydrolysis resistance. More importantly, The filler masterbatch can maintain the physical and chemical properties of the filled material, especially its biodegradability, while reducing the cost of biodegradable plastics. The invention also relates to a preparation method of the filler masterbatch. Background technique [0002] Since general-purpose plastics such as polyethylene (PE), polypropylene (PP) and polystyrene (PS) can exist stably in nature for a long time and are difficult to degrade, they are difficult to recycle after they are discarded, causing serious pollution to the environment. Biodegradable plastics have become one of the effective ways to solve the problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L67/04C08L67/02C08L3/02C08L33/00C08L79/00C08K13/02C08K5/29D01F1/10
Inventor 焦建苑仁旭钟宇科赵崴徐依斌曾祥斌蔡彤旻夏世勇
Owner KINGFA SCI & TECH CO LTD
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