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PC alloy material, and preparation method and application 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: 2018-03-27
沈丽媛
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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, and preparation method and application thereof
  • PC alloy material, and preparation method and application thereof
  • PC alloy material, and preparation method and application thereof

Examples

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preparation example Construction

[0104] In the examples and comparative examples, the method for preparing the PC alloy material includes the following steps:

[0105] 1) Weigh each component according to the content of the formula, and combine the polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol, fibrous fillers, and other additives that need to be pre-baked Carry out the pre-drying treatment at 120℃~130℃, and the pre-drying time is set to 4h~6h to obtain pre-baked polycarbonate and polyethylene terephthalate-1,4-cyclohexanedimethanol Ester, fibrous filler, other additives;

[0106] 2) The pre-baked polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol, fibrous fillers, and other additives are mixed uniformly through a high-speed mixer. The mixing temperature is 30℃~50℃, the mixing time is set at 5min~15min;

[0107] 3) Mix homogeneously polycarbonate, polyethylene terephthalate-1,4-cyclohexanedimethanol, other additives, aluminum salt or aluminum oxide, zirconium salt or zirconiu...

Embodiment 33

[0116] The method of adding glass fibers in Example 33: 3) is: based on the total weight of glass fibers, 40% of the total weight of glass fibers is added from the feed port 1 in the figure, and based on the total weight of glass fibers, 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, 25% 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 40% by weight of the glass fibers; and the glass fibers with a length greater than 300um but not more than 500um account for 25% by weight of the glass fibers.

Embodiment 34

[0117] The method of adding glass fiber in Example 34:3) is: based on the total weight of glass fiber, 20% of the total weight of glass fiber is added from feed port 1 in the figure, and based on the total weight of glass fiber, 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, 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% of the weight of the glass fibers; the glass fibers with a length greater than 300um but not more than 500um account for 25% of the glass fibers.

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Abstract

The invention discloses a PC alloy material. The PC alloy material comprises, by weight, 54.5 to 90 parts of polycarbonate, 5 to 61 parts of poly(ethylene terephthalateco-1,4-cylclohexylenedimethyleneterephthalate), more than 0 part and no more than 30 parts of a fibrous filling material, and 0 to 5.5 parts of other auxiliary agents. According to the invention, polyester is used for modificationof PC alloy, so the obtained PC alloy material overcomes the disadvantages of conventional PC materials, has good fluidity, warping performance, internal stress performance, demolding performance andcolor and is especially applicable to preparation of thin-wall products.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PC alloy material and a preparation method and application thereof. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent performance. It has good comprehensive properties, high mechanical strength, good impact resistance, good dimensional stability, and good electrical insulation. But PC also has high melt viscosity, poor fluidity, and solvent resistance. Poor performance, stress cracking and swelling easily occur in solvent and alkaline environment, greater sensitivity to notches, stress cracking easily during processing, and higher processing temperature. Choosing special polyesters to improve PC performance and obtain composite materials with excellent comprehensive performance is a more effective and simple way to modify. [0003] Polyethylene terephthalate-1,4-cyclohexanedimethanol has high impact strength, outstanding transparency,...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08K13/04C08K7/14C08K3/22C08K3/16C08K3/28C08K3/30
CPCC08L69/00C08K2201/004C08K2201/014C08L67/02C08K13/04C08K7/14C08K2003/2244C08K2003/2248C08K3/16C08K3/28C08K2003/3045
Inventor 沈丽媛
Owner 沈丽媛
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