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Transparent heat-resistant polycarbonate material and preparation method thereof

A polycarbonate and heat-resistant technology, which is applied in the field of polycarbonate composites and its preparation, can solve problems such as poor solubility, poor processing performance, high melt viscosity, and poor fluidity, and achieve improved light transmission performance and industrial preparation. Simple, compatibility-enhancing effects

Active Publication Date: 2019-11-12
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It is worth noting that in the wide application of polycarbonate mentioned above, there are two aspects that need to be considered in the research and development of polycarbonate materials: first, the transparency of polycarbonate materials
Second, the heat resistance of polycarbonate
Although polyarylate has good heat resistance, it also has some disadvantages, such as high melt viscosity, poor fluidity, poor solubility and processability, especially thin-walled and large-scale products are difficult to produce

Method used

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  • Transparent heat-resistant polycarbonate material and preparation method thereof
  • Transparent heat-resistant polycarbonate material and preparation method thereof
  • Transparent heat-resistant polycarbonate material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2-1

[0035] Step (1). Vacuum dry the polycarbonate and polyarylate at 120°C for 24 hours respectively (Li-TFSI does not need to be dried);

[0036] Step (2). Add 36g of dried polycarbonate, 24g of dried polyarylate and 0.3g of Li-TFSI into the internal mixer, melt and blend at 260°C, and melt and mix at 50rpm / min 10min.

[0037]Step (3). The mixture is discharged from the melting and kneading equipment and lowered to normal temperature to obtain a polycarbonate composite material.

[0038] The mass ratio of polycarbonate, polyarylate and Li-TFSI in the polycarbonate composite prepared in Example 2-1 is 60:40:0.5.

[0039] The materials prepared in Comparative Example 1 and Example 2-1 were tested for thermal performance.

[0040] The materials prepared in Comparative Example 1 and Example 2-1 were subjected to a light transmittance-haze test, and the test conditions were as follows: the samples should be pressed into 0.3 mm thin slices.

[0041] The glass transition temperature ...

Embodiment 2-2

[0050] Step (1). Vacuum dry the polycarbonate and polyarylate at 120°C for 24 hours respectively (Li-TFSI does not need to be dried);

[0051] Step (2). Add 42g of dried polycarbonate, 18g of dried polyarylate and 0.3g of Li-TFSI into the internal mixer, melt and blend at 260°C, and melt and mix at 50rpm / min 10min.

[0052] Step (3). The mixture is discharged from the melting and kneading equipment and lowered to normal temperature to obtain a polycarbonate compound with high transparency.

[0053] The mass ratio of polycarbonate, polyarylate and Li-TFSI in the polycarbonate compound prepared in Example 2-2 is 70:30:0.5.

Embodiment 2-3

[0055] Step (1). Vacuum dry the polycarbonate and polyarylate at 120°C for 24 hours respectively (Li-TFSI does not need to be dried);

[0056] Step (2). Add 48g of dried polycarbonate, 16g of dried polyarylate and 0.3g of Li-TFSI into the internal mixer, melt and blend at 250°C, and melt and mix at 40rpm / min 10min.

[0057] Step (3). The mixture is discharged from the melting and kneading equipment and lowered to normal temperature to obtain a polycarbonate compound with high transparency.

[0058] The mass ratio of polycarbonate, polyarylate and Li-TFSI in the polycarbonate composite prepared in Example 2-3 is 80:20:0.5.

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Abstract

The invention discloses a transparent heat-resistant polycarbonate material and a preparation method thereof. The polycarbonate material is a blend of polycarbonate, polyarylate and an organic salt. The preparation method comprises the following steps: subjecting the polycarbonate and the polyarylate to separate vacuum drying at 80-120 DEG C for 24-48 h; adding the dried polycarbonate, the dried polyarylate and the organic salt in a mass ratio of (60-90): (40-10): (0.3-3) into a melting and mixing apparatus for melting and mixing at 250-300 DEG C so as to obtain a mixture; discharging the mixture from the melting and mixing apparatus, and cooling the mixture to normal temperature so as to obtain the polycarbonate material. The polycarbonate material of the invention has excellent light transmittance and good heat resistance; and the preparation method thereof only needs the common melting and mixing apparatus, and is simple in industrial preparation of the material.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a polycarbonate composite with high transparency and heat resistance and a preparation method thereof, in particular to a polycarbonate compound with heat resistance obtained by modifying polycarbonate with an organic salt. Polycarbonate compound with transparent properties and preparation method thereof. Background technique [0002] Polycarbonate (referred to as PC) is an amorphous, odorless, tasteless, non-toxic and transparent thermoplastic polymer. It is the only plastic variety with good transparency. It has good mechanical strength, heat resistance, and UV resistance. Radiation and electrical resistance comprehensive performance, high impact resistance, low creep, stable product size, easy to strengthen, non-toxic and hygienic, can be colored, has good cost performance and the potential of chemical modification and physical modification. It is an excellent comprehe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/03C08K5/435
CPCC08L69/00C08L2201/08C08L2201/10C08L67/03C08K5/435B29C48/022B29C48/16B29C48/397B29C48/92B29C2948/9259C08L67/00B29C2948/9258B29C2948/92885
Inventor 李勇进徐慧慧
Owner HANGZHOU NORMAL UNIVERSITY
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