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Polypropylene composite material containing alginate copper ion inhibitor and preparation method of polypropylene composite material

A technology of alginate and composite materials, applied in the direction of electrical components, circuits, insulators, etc., can solve the problems of inability to inhibit catalytic degradation, inability to use for a long time, short life, etc., to achieve inhibition of catalytic aging, strong catalytic aging, oil extraction good sex effect

Inactive Publication Date: 2014-12-24
宁波锦地工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the polypropylene with antioxidant and anti-ultraviolet agent is used as the sheath of copper core wire, 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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  • Polypropylene composite material containing alginate copper ion inhibitor and preparation method of polypropylene composite material

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 alginate, 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 alginate, 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 an alginate copper ion inhibitor and a preparation method of the polypropylene composite material. The polypropylene composite material adopts a blend which comprises 70%-90% of polypropylene, 0.01%-1% of the alginate copper ion inhibitor, 0.1%-10% of inorganic filler, 0.1%-0.5% of an antioxidant, 0.1%-0.3% of an ultraviolet absorbent and 5%-20% of a fire retardant. According to the method, raw materials are mixed into a mixture proportionally, and the mixture is extruded by a double-screw extruder and made into granules through cold water drafting, cutting and granulation. According to the method, the alginate copper ion inhibitor is adopted and has high chelation capacity on metal ions, the chelation stability constant is large, the metal ions are not prone to dissociation after chelation, the alginate copper ion inhibitor has high capability of inhibiting of heavy metal ion catalysis aging, and the polypropylene composite material has a remarkable copper inhibition effect and has advantages of good solubility with resin, no migration, no pollution, water resistance, good oil extraction property, no influence on resin electrical insulation property and other properties 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 an alginate 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 aging de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L5/04C08K13/02C08K3/26C08K3/34C08K3/22C08K3/32C08K5/3492C08K5/053B29C47/92B29C48/92
CPCC08L23/12C08L2203/202C08L2207/10H01B3/441C08L5/04C08K13/02C08K2003/265C08K5/1345
Inventor 沈国璋程亚军沈杰付俊
Owner 宁波锦地工程塑料有限公司
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