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Polypropylene composite material capable of being welded at high frequency and preparation method thereof

A composite material, high-frequency welding technology, applied in the field of polymer materials, can solve the problems of narrow processing range, poor thermal stability, poor compatibility of polypropylene materials, etc., to achieve excellent high-frequency welding performance, good high-frequency welding performance. Effect

Inactive Publication Date: 2012-11-14
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PVC and PVDC materials have strong high-frequency welding performance, their thermal stability is poor, the melting temperature is relatively close to the decomposition temperature, the processing range is narrow, and the compatibility with polypropylene materials is poor. Disadvantages of plasticizers, heat stabilizers, etc.

Method used

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  • Polypropylene composite material capable of being welded at high frequency and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Embodiment 1 formula is as follows (mass parts):

[0023] PP 100

[0024] PA6 25

[0025] EPDM-g-MAH 3

[0026] Talc powder 0

[0027] PE wax 0.5

[0028] Antioxidant 0.2

[0029] Manufacturing process: Weigh the required materials according to the proportion, and stir them at high speed in a high-speed mixer for 5-10 minutes; add the mixed materials into the twin-screw extruder, and granulate through melt extrusion; twin-screw extruder temperature: Zone 1 temperature: 170~225℃; zone 2 temperature: 170~225℃; zone 3 temperature: 170~225℃; zone temperature: 170~225℃; zone 5 temperature: 170~225℃; zone 6 temperature: 170~ 225℃; temperature in zone seven: 170~225℃; temperature in zone eight: 170~225℃; temperature of machine head: 170~225℃; residence time: 2~3min. Melt pressure 3.0~4.0MPa, vacuum degree -0.03~-0.06MPa.

Embodiment 2

[0030] Embodiment 2: Embodiment 2 formula is as follows (mass parts):

[0031] PP 100

[0032] PA6 50

[0033] EPDM-g-MAH 5

[0034] Talc powder 25

[0035] PE wax 0.5

[0036] Antioxidant 0.2

[0037] Manufacturing process: with embodiment 1.

Embodiment 3

[0038] Embodiment 3: Embodiment 3 formula is as follows (mass parts):

[0039] PP 100

[0040] PA6 100

[0041]PP-g-MAH 10

[0042] Calcium carbonate 50

[0043] OP Wax 1.0

[0044] Antioxidant 0.4

[0045] Manufacturing process: with embodiment 1.

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Abstract

The invention discloses a polypropylene composite material capable of being welded at a high frequency and a preparation method thereof. The polypropylene composite material capable of being welded at the high frequency comprises the following components in part by mass: 100 parts of polypropylene, 25 to 100 parts of main modifier, 3 to 10 parts of compatilizer, 0 to 50 parts of filling agent, 0.5 to 1.0 part of lubricant and 0.2 to 0.6 part of antioxidant. PA or EVA with excellent thermal stability and high-frequency welding performance serves as a high-frequency welding modifier of polypropylene to perform blending modification on polypropylene, so that the composite material has good high-frequency welding performance.

Description

[technical field] [0001] The invention relates to the technical field of polymer materials, in particular to a high-frequency weldable polypropylene composite material and a preparation method thereof. [Background technique] [0002] High-frequency welding of plastics refers to the use of high-frequency energy to act on the connection area of ​​the material, so that the polar molecules of the material frequently vibrate under the high-frequency electric field to generate heat, so that the plastic material between the electrodes reaches a melting state at the same time, and then achieves The purpose of welding two materials together. Since the electrodes are cold, and the plastic can conduct some heat when it heats up, the temperature of the plastic is the highest in the center and the lowest on the two sides and the four sides. This is ideal for plastic welding, and it is a fast, efficient, uniform heating, simple and convenient plastic welding method. The final weld stren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/08C08L31/04C08L77/02C08L51/06C08K13/02C08K3/34C08K3/26B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92561B29C2948/92895
Inventor 徐东徐永杨德武
Owner SHENZHEN KEJU NEW MATERIAL