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A kind of polypropylene composite material containing polyphosphate anti-copper agent and preparation method thereof

A composite material and polyphosphate technology, applied in the field of polymer materials, can solve the problems of inability to inhibit catalytic degradation, long-term use, and short life, and achieve the effects of inhibiting catalytic aging, strong catalytic aging, and good oil extraction

Inactive Publication Date: 2016-04-27
ZHEJIANG EXPO NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if polypropylene with antioxidant and anti-ultraviolet agent is added as copper core wire sheath, its life is short and cannot be used for a long time
Even adding more antioxidants and anti-ultraviolet agents can not inhibit the catalytic degradation of polypropylene by copper

Method used

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  • A kind of polypropylene composite material containing polyphosphate anti-copper agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step (1). 85g polypropylene, 5g calcium carbonate, 0.1g ultraviolet absorber UV-12, 9.9g flame retardant are mixed into 100g compound;

[0026] Step (2). Add the compound to the twin-screw extruder for extrusion. The processing temperature of the twin-screw extruder is 120°C in the feeding section, 150°C in the plasticizing section, 180°C in the homogenizing section, and the temperature of the head is 180°C ; and then draw in cold water in a water bath at 10° C., the draw ratio is 2 times, and cut and granulate with a cutting machine to obtain a polypropylene composite material.

[0027] From Table 1, we can see that the polypropylene composite material prepared in Example 1 has a tensile strength of 32.4Mpa, an elongation of 64%, an oxygen absorption induction period of 2min at 200°C, and a copper clamp test of 4d at 150°C. The back piece is severely brittle and the copper piece turns green.

Embodiment 2

[0029] Step (1). 84.7g polypropylene, 0.1g sodium tripolyphosphate, 5g calcium carbonate, 0.2g antioxidant 1010, 0.1g ultraviolet absorber UV-12, 9.9g flame retardant are mixed into 100g compound;

[0030] Step (2). Add the compound to the twin-screw extruder for extrusion. The processing temperature of the twin-screw extruder is 120°C in the feeding section, 150°C in the plasticizing section, 180°C in the homogenizing section, and the temperature of the head is 180°C ; and then draw in cold water in a water bath at 10° C., the draw ratio is 2 times, and cut and granulate with a cutting machine to obtain a polypropylene composite material.

[0031] From Table 1, we can see that the polypropylene composite material prepared in Example 2 has a tensile strength of 33.1Mpa, an elongation of 76%, an oxygen absorption induction period of 38min at 200°C, and a copper clamp test of 4d at 150°C. The back sheet is not brittle, and the copper sheet has no change.

Embodiment 3

[0033] Step (1). 84.5g polypropylene, 0.3g sodium tripolyphosphate, 5g calcium carbonate, 0.2g antioxidant 1010, 0.1g ultraviolet absorber UV-12, 9.9g flame retardant are mixed into 100g compound;

[0034] Step (2). Add the compound to the twin-screw extruder for extrusion. The processing temperature of the twin-screw extruder is 120°C in the feeding section, 150°C in the plasticizing section, 180°C in the homogenizing section, and the temperature of the head is 180°C ; and then draw in cold water in a water bath at 10° C., the draw ratio is 2 times, and cut and granulate with a cutting machine to obtain a polypropylene composite material.

[0035] From Table 1, we can see that the polypropylene composite material prepared in Example 3 has a tensile strength of 31.7Mpa, an elongation of 58%, an oxygen absorption induction period of 48min at 200°C, and a copper clamp test of 4d at 150°C. The back sheet is not brittle, and the copper sheet has no change.

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Abstract

The invention relates to a polypropylene composite material containing a polyphosphate copper-inhibitor and a preparation method of the polypropylene composite material. The polypropylene composite material is a blending material of the following materials in percent by mass: 70-90% of polypropylene, 0.01-1% of the polyphosphate copper inhibitor, 0.1-10% of an inorganic filling material, 0.1-0.5% of an anti-oxidant, 0.1-0.3% of a UV absorbent and 5-20% of a fire retardant. The preparation method comprises: mixing the various raw materials into a mixed material according to the ratio, extruding the mixed material by a double-screw extruder, performing cold-water drawing, cutting and granulating to form granules. The polyphosphate copper inhibitor employed by the method is strong in chelating capability with metal ions and large in chelating stability constant, metal ions are not easy to dissociate after chelated; and the polyphosphate copper inhibitor has extremely strong capability of inhibiting catalytic aging of heavy-metal ions, is substantial in copper-hazard resistant effect, and also has the advantages that the polyphosphate copper inhibitor is good in compatibility with resin, does not migrate, has no pollution, is resistant in water and good in oil extraction performance, does not influence electrical insulation property and other properties of resin, and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a polypropylene composite material and a preparation method thereof, in particular to a polypropylene composite material containing a polyphosphate anti-copper agent for electric wires and cables and a preparation method thereof. Background technique [0002] In recent years, with the development of electric power and communication industries, the demand for wires and cables is gradually increasing. All kinds of cables and electrical appliances mostly use copper core cables, and their outer insulating coatings are polyolefin plastics, among which propylene copolymers have shown incomparable advantages as other materials in terms of communication cable insulation materials. However, due to the presence of methyl groups and tertiary carbon atoms in polypropylene molecules, it is very susceptible to light or heat aging, especially in the presence of copper ions, and the agin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/32C08K5/521C08K5/5317
CPCB29B9/06B29C48/92B29C2948/92704C08K3/26C08K3/32C08K5/053C08K5/34922C08K13/02C08K2003/265C08K2003/324C08K2003/329C08L2203/202H01B3/441C08L23/12
Inventor 陈思汕程亚军沈杰付俊
Owner ZHEJIANG EXPO NEW MATERIALS CO LTD
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