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PC alloy material, preparation method and applications thereof

A technology of alloy materials and uniform mixing, which is applied in the field of PC alloy materials and its preparation, can solve problems such as shortage, fluidity, warpage performance, internal stress performance, mold release performance, and color that cannot achieve good results.

Inactive Publication Date: 2018-03-16
陈志凤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • PC alloy material, preparation method and applications thereof
  • PC alloy material, preparation method and applications thereof
  • PC alloy material, preparation method and applications thereof

Examples

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preparation example Construction

[0096] In embodiment and comparative example, the preparation method of described PC alloy material, comprises the steps:

[0097] 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 Perform pre-drying treatment at 120°C to 130°C, and set the pre-drying time to 4h to 6h to obtain pre-dried polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol Esters, fibrous fillers, other additives;

[0098] 2) Mix the pre-dried polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol, fibrous fillers, and other additives through a high-speed mixer, and the mixing temperature is 30℃~50℃, the mixing time is set at 5min~15min;

[0099] 3) Pass the homogeneously mixed polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol, other additives, copper salt or copper oxide through such as figure 1 Feed port ...

Embodiment 21

[0108] Embodiment 21:3) in the addition method of glass fiber is: based on the total weight of glass fiber, the glass fiber that accounts for 40% of the total weight of glass fiber is added from feeding port 1 in the figure, based on the total weight of glass fiber, accounts for 40% of the total weight of glass fiber. The glass fiber of 35% of the total weight of the glass fiber is added from the feed port 2, based on the total weight of the glass fiber, the glass fiber accounting for 25% of the total weight of the glass fiber is added from the feed port 3. In the obtained pellets, glass fibers with a length of 100um to 300um account for 40% by weight of glass fibers; glass fibers with a length greater than 300um but not more than 500um account for 25% by weight of glass fibers.

Embodiment 22

[0109] Embodiment 22: The way of adding glass fibers in 3) is: based on the total weight of glass fibers, glass fibers accounting for 20% of the total weight of glass fibers are added from the feeding port 1 in the figure, based on the total weight of glass fibers, accounting for 20% of the total weight of glass fibers. The glass fiber of 35% of the total weight of the glass fiber is added from the feed port 2, based on the total weight of the glass fiber, the glass fiber accounting for 45% of the total weight of the glass fiber is added from the feed port 3. The glass fibers with a length of 100um to 300um in the obtained pellets account for 60% by weight of the glass fibers; the glass fibers with a length greater than 300um but not more than 500um account for 25% by weight of the glass fibers.

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Abstract

The invention discloses a PC alloy material, which comprises, by weight, 54.5-90 parts of polycarbonate, 4.5-60 parts of polyethylene glycol terephthalate-1,4-cyclohexanedimethanol ester, more than 0and not more than 30 parts of a fiber-like filler, and 0-6 parts of other auxiliary agents. According to the present invention, the PC alloy material is modified with the polyester, such that the obtained PC alloy material overcomes the disadvantages of the existing PC alloy material, further has advantages of good fluidity, good warping performance, good internal stress performance, good demolding performance and good color, and can be used for preparing into the thin-walled 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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IPC IPC(8): C08L69/00C08L67/02C08K13/04C08K7/14C08K3/22C08K3/16C08K3/30C08K3/28
CPCC08L69/00C08K2201/004C08K2201/014C08L67/02C08K13/04C08K7/14C08K2003/2248C08K3/16C08K2003/3045C08K3/28
Inventor 陈志凤
Owner 陈志凤
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