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A kind of PC alloy material and its preparation method and application

An alloy material, a technology of cyclohexane dimethanol ester, which is applied in the field of PC alloy material and its preparation, can solve the problem of insufficient fluidity, warpage performance, internal stress performance, mold release performance, and color and luster can not achieve good results and other problems to achieve the effect of color improvement and good fluidity

Active Publication Date: 2019-04-30
KINGFA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the prior art uses polyethylene terephthalate-1,4-cyclohexanedimethanol ester to modify PC, its products have poor performance in terms of fluidity, warpage performance, internal stress performance, and mold release performance. , color and other aspects failed to achieve good results, especially as a thin-walled product, the above-mentioned lack of performance is particularly obvious

Method used

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  • A kind of PC alloy material and its preparation method and application
  • A kind of PC alloy material and its preparation method and application
  • A kind of PC alloy material and its preparation method and application

Examples

Experimental program
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Effect test

preparation example Construction

[0087] In embodiment and comparative example, the preparation method of described PC alloy material, comprises the steps:

[0088] 1) Weigh each component according to the formula content, and mix the polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethylene ester, fibrous filler, and other additives that need to be pre-dried Carry out pre-drying treatment at 120℃~130℃;

[0089] 2) Mix the pre-dried polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol, fibrous fillers, and other additives evenly through a high-speed mixer;

[0090] 3) Pass the homogeneously mixed polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol, other additives, zirconium salt or zirconium oxide through the main feeding port, fibrous The filler is fed into the twin-screw extruder through the main feeding port or the side feeding port, and the temperature control setting temperature of the twin-screw extruder is 200 ° C ~ 280 ° C;

[0091] 4) Cooling and dicing. T...

Embodiment 0～29 and comparative example 1～4

[0098] According to the formulations in Table 1 and Table 2, the PC alloy materials of Examples 0-4 and Comparative Examples 1-4 were prepared, and their performance tests are shown in Table 3. It can be seen from Examples 1 to 4 that when zirconium is added to the PC alloy material, the warpage, internal stress, mold release, and color properties of the PC alloy material are significantly improved. From the comparison of Examples 1-4 and Comparative Examples 1-4, it can be seen that when the content of zirconium element added to the PC alloy material is too high, the warpage, internal stress, and color properties of the PC alloy material will be significantly affected .

[0099] According to the formulations in Tables 4, 5, 6, and 7, the PC alloy materials of Examples 5-29 were prepared, and their performance tests are shown in Table 8. It can be seen from Examples 1 to 29 that the schemes of adding an appropriate amount of metal elements in the present invention can improve...

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Abstract

The invention discloses a PC alloy material. The PC alloy material comprises the following components in parts by weight: 54.8 to 90.5 parts of polycarbonate, 5 to 61 parts of polyethylene terephthalate glycol-1,4-cyclohexanedimethanol terephthalate, 0 to 30 parts of fiber-type filler and 0 to 5.5 parts of other additives. The polyester is adopted to modify PC alloy, so that the obtained PC alloy material overcomes the defects of the existing PC alloy material and has good mobility, warping performance, inner stress performance, demolding performance and color and is particularly suitable for being made into a thin-wall product.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PC alloy material and its preparation method and application. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent performance. It has good comprehensive properties, high mechanical strength, good impact toughness, stable size, and good electrical insulation; but PC also has high melt viscosity, poor fluidity, and solvent resistance. Poor resistance, prone to stress cracking and swelling in solvents and alkaline environments, more sensitive to notches, prone to stress cracking during processing, and the processing temperature is higher. It is a relatively effective and convenient modification method to select special polyester to improve the performance of PC and obtain composite materials with excellent comprehensive properties. [0003] Polyethylene terephthalate-1,4-cyclohexanedimethanol has high impact strength, outstanding tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/02C08K3/22C08K3/16C08K3/30C08K5/134C08K7/14C08K3/28C08K3/32
CPCC08K2201/003C08L69/00C08L2205/03C08L67/02C08K2003/2244C08K3/16C08K2003/3045C08K5/1345C08K7/14
Inventor 陈志凤
Owner KINGFA SCI & TECH CO LTD
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