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Method for producing transparent resin composition

A technology for transparent resins and manufacturing methods, applied in the field of manufacturing transparent resin compositions, capable of solving problems such as poor surface hardness or UV resistance

Active Publication Date: 2016-08-17
TOSHIBA MASCH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, although polycarbonate has excellent characteristics as described above, research and development regarding its blend with acrylic resin is ongoing due to its poor surface hardness or UV resistance

Method used

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  • Method for producing transparent resin composition
  • Method for producing transparent resin composition
  • Method for producing transparent resin composition

Examples

Experimental program
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Effect test

Embodiment 1

[0056] At first, when implementing the manufacturing method of the present invention, prepare the twin-screw extruder, model TEM-18SS manufactured by Toshiba Machinery Co., Ltd. (Toshiba Machinery Co., Ltd.) whose nominal diameter of the outer diameter of the first screw rod 22 is regulated as 18mm. The twin-screw extruder 13 in the front stage of the manufacturing device 10 . A single-screw extruder, model SE-36SP manufactured by Toshiba Machine Co., Ltd. with a nominal diameter of the outer diameter of the second screw 42 specified as 36 mm was prepared as the single-screw extruder responsible for the post-process of the manufacturing device 10 . In addition, a twin-screw extruder model TEM-18SS and a single-screw extruder model SE-36SP were connected through a single pipe 14 .

[0057] In the first screw 22 of the twin-screw extruder 13 , the length (effective length) of the first screw 22 with respect to the outer diameter of the first screw 22 is 48 . In the second screw...

Embodiment 2

[0061] In Example 2, the melt-mixed resin C was kneaded using the single-screw extruder 15 having the second screw 42 having a different form of the shear processing part 43 . The shear processing part 43 has annular protrusions 49 at two places spaced apart in the longitudinal direction of the second screw 42 . The configuration of the manufacturing apparatus 10 is the same as that of the embodiment except for the single-screw extruder 15 .

[0062] In Example 2, the polycarbonate resin A was supplied to the barrel 21 of the twin-screw extruder 13 from the first raw material supply device 11 at 8 kg per hour, and the acrylic resin B was supplied to the second raw material at 2 kg per hour. The feeding device 12 feeds into the barrel 21 of the twin-screw extruder 13 . In this state, the polycarbonate resin A and the acrylic resin B were melted and mixed at the rotational speed of the first screw 22 at 200 rpm, and the melt-mixed resin C was produced.

[0063] Then make the s...

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Abstract

According to this method for producing a transparent resin composition, a molten mixed resin is produced by continuously supplying a polycarbonate resin and an acrylic resin to a twin screw extruder, and the molten mixed resin is supplied to a single screw extruder that has a screw provided with a shearing unit. A transparent resin composition is continuously produced by kneading the molten mixed resin by means of the shearing unit that rotates at a speed of from 500 rpm to 4,000 rpm (inclusive).

Description

technical field [0001] The present invention relates to a method for producing a transparent resin composition containing polycarbonate resin and acrylic resin. Background technique [0002] Polycarbonate resins have excellent properties such as transparency, dimensional stability, and impact resistance, and have been used in various fields such as automobiles, electrical equipment, and housing. On the other hand, although polycarbonate has excellent characteristics as described above, research and development regarding its blend with acrylic resin is underway due to its poor surface hardness or UV resistance. [0003] Patent Document 1 discloses that a transparent resin material is obtained by kneading a raw material made of polycarbonate resin and acrylic resin by using a high-shear molding device having an internal feedback type (Japanese: internal return type) screw. technology. [0004] In this prior art, a raw material obtained by blending a polycarbonate resin and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/58B29B7/42B29B7/48C08J3/20C08L33/00C08L69/00B29C48/385B29C48/395B29C48/54B29C48/55B29C48/575
CPCB29B7/42C08L69/00B29B7/482B29B7/603B29B7/7461B29B7/7485B29B7/82B29B7/483B29C48/54B29C48/55B29C48/286B29C48/385B29C48/397B29C48/575B29B7/487C08L33/04B29B7/385C08J3/20C08L33/00B29K2033/04B29K2069/00B29K2995/0026
Inventor 小林昭美藤井重行鲛岛孝文清水博
Owner TOSHIBA MASCH CO LTD
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