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PP/PET alloy material and preparation process thereof

A technology of alloy material and preparation process, applied in the field of PP/PET alloy material and its preparation process, can solve the problems of complex process, increased energy consumption, increased material processing cost, etc., so as to reduce environmental pollution, improve mechanical properties and bending properties Good results

Inactive Publication Date: 2009-11-18
DONGGUAN PUNENG PLASTIC TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is complicated in technology, and the method of extrusion processing twice increases the energy consumption and the cost of material processing. In addition, the method uses PS-g-MAH, PBT, grafting agent, etc. to make grafts as PP and Compatibilizer for PET, the graft has no obvious compatibilizing effect, and the physical and mechanical properties of the prepared alloy material are not good.
The Chinese patent "Formation and strengthening method of in-situ reinforcement of polypropylene blend system" with application number 200610024925.5 also mentions the use of maleic anhydride grafted polypropylene (PP-g-MAH) as a compatibilizer for PP and PET , the effect of using this single compatibilizer is not good, especially the effect of improving the impact strength of the material is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A PP / PET alloy material, which is made of the following raw materials in weight percentage: PP / PET composite film 40%, PP / PET non-woven fabric 42.8%, SEBS-g-MAH 3%, EPDM-g-MAH 1.5% , PP-g-AA 1.5%, silane coupling agent 1%, long glass fiber 10%, antioxidant 1010 0.1%, antioxidant 168 0.1%. Its preparation process is as follows: (1) drying: crush PP / PET composite film and PP / PET non-woven fabric, and dry at 75°C for 3 hours; (2) mixing and extrusion: dry the dried PP / PET Composite film 40%, PP / PET non-woven fabric 42.8%, SEBS-g-MAH3%, EPDM-g-MAH1.5%, PP-g-AA1.5%, silane coupling agent 1%, antioxidant 1010 0.1%, Antioxidant 168 0.1% Put it into a high mixer and mix it well for 10 minutes, then add it to the parallel twin-screw extruder, add 10% of long glass fiber into the fiber inlet of the extruder, and parallel twin-screw extruder extruder pellets; the temperature of each section from the hopper to the die of the parallel twin-screw extruder is set at 140°C, 170°C, 220...

Embodiment 2

[0039] A PP / PET alloy material, which is made of the following raw materials in weight percentage: PP / PET non-woven fabric 78.6%, SEBS-g-MAH 1%, EPDM-g-MAH 2.5%, PP-g-AA 1.5% , silane coupling agent 1%, long glass fiber 15%, antioxidant 1010 0.2%, antioxidant 168 0.2%. Its preparation process is as follows: (1) drying: crush the PP / PET non-woven fabric, and dry it at 80°C for 3 hours; (2) mixing and extruding: 78.6% of the dried PP / PET non-woven fabric, SEBS-g-MAH1%, EPDM-g-MAH2.5%, PP-g-AA1.5%, silane coupling agent 1%, antioxidant 1010 0.2%, antioxidant 168 0.2% put into high blender Mix well for 15 minutes, then add to the parallel twin-screw extruder, add 15% of long glass fiber into the fiber inlet of the extruder, and extrude the pellets from the parallel twin-screw extruder; the parallel twin-screw extruder consists of a hopper The temperature of each section of the die is set to 150°C, 180°C, 230°C, 240°C, 250°C, 255°C, 250°C, 250°C, 255°C, 250°C; The extruded pellet...

Embodiment 3

[0041]A PP / PET alloy material, which is made of the following raw materials in weight percentage: PP / PET composite film 71.8%, SEBS-g-MAH 5%, EPDM-g-MAH 2%, silane coupling agent 1%, long Glass fiber 20%, antioxidant 1010 0.1%, antioxidant 168 0.1%. Its preparation process is as follows: (1) drying: crush the PP / PET composite film and dry it at 80°C for 3 hours; (2) mixing and extrusion: dry the PP / PET composite film with 71.8%, SEBS- g-MAH5%, EPDM-g-MAH2%, silane coupling agent 1%, antioxidant 10100.1%, antioxidant 168 0.1% put into high mixer and mix well for 20 minutes, then add to parallel twin-screw extrusion machine, add 20% of long glass fibers into the fiber inlet of the extruder, and extrude pellets from the parallel twin-screw extruder; 240°C, 250°C, 260°C, 265°C, 260°C, 260°C, 265°C, 260°C; the screw speed of the parallel twin-screw extruder is 250r / min and the material delivery speed of the fiber inlet is 28r / min; (3 ) Stretching and drawing: stretching and drawi...

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Abstract

The invention belongs to the field of polymer composite materials, in particular relating to a PP / PET alloy material and preparation process thereof. The PP / PET alloy material is prepared from the following raw materials by weight percentage: 60 to 90 percent of PP / PET composite materials, 3 to 9 percent of compatibilizers, 6 to 30 percent of reinforcing agent, 0.5 to 6 percent of coupling agent, and 0 to 1 percent of antioxidant. The preparation process comprises the steps of drying, mixing, extruding, stretching and drawing and cooling and granulating. In the method, waste PP / PET composite films and / or PP / PET non-woven fabrics, serving as main raw materials, are added with a composite compatibilizer to promote the PP and PET to be compatible on the molecular level; the coupling agent and reinforcing agent can effectively improve the mechanical properties of the PP / PET composite materials; and the prepared PP / PET alloy material has a flexural modulus up to 1,900 MPa, good bending properties and high impact strength up to 120J / M, can be widely used for molding the plastic parts of electric appliances, toys and car parts; and in addition, the waste PP / PET composite films and / or PP / PET non-woven fabrics are adopted as main raw materials, so environment pollution is reduced greatly, and the purpose of changing waste into valuable is fulfilled.

Description

Technical field: [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a PP / PET alloy material and a preparation process thereof. Background technique: [0002] The most popular PP / PET composite film and PP / PET co-spun non-woven fabrics in the current packaging material market, due to the complete incompatibility of PP and PET in terms of thermodynamic properties, lead to poor recyclability, resulting in hundreds of thousands of Thousands of tons of white pollution have caused great harm to the entire human living environment. [0003] Polypropylene (PP) is one of the most used general-purpose plastics at present. It has many excellent properties: light weight, non-toxic, good electrical insulation performance, chemical stability, and easy processing and molding, so it is widely used in various fields of industrial production. However, PP also has disadvantages such as low temperature brittleness, low mechanical strength and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L67/02C08K7/14B29B9/06B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C48/9185B29C48/919B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 林进帆闫家国季建仁王玉梅袁海兵
Owner DONGGUAN PUNENG PLASTIC TECH INDAL
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