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Cable material containing special PVC calcium powder and preparation method thereof

A cable material and calcium powder technology, applied in circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of affecting processing and performance, poor quality of plastic products, poor thermal stability, etc. Oxidative degradation, improved heat resistance, and stable quality

Inactive Publication Date: 2018-09-14
江苏东立超细粉体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But, the thermostability of PVC resin in the prior art is poor, easily be subjected to heat to generate by active site (as allyl chloride, tertiary chlorine, tertiary hydrogen, end group with double bond or peroxide residue etc.) The induced autocatalytic dehydrochlorination reaction forms conjugated polyene chains, and then undergoes chain scission, crosslinking and other reactions to change color and degrade, resulting in poor quality and performance of plastic products, which in turn affects their processing and use performance

Method used

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  • Cable material containing special PVC calcium powder and preparation method thereof

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preparation example Construction

[0027] A method for preparing a cable material comprising calcium powder special for PVC, comprising the steps of:

[0028] (1) Ingredients: Take the following raw materials in parts by weight: 30-80 parts of polyvinyl chloride resin, 10-20 parts of PVC special calcium powder, 2-3 parts of dispersant, 5-8 parts of stabilizer, 2 parts of lubricant ~3 parts, 10~20 parts of plasticizer, 2~3 parts of antioxidant;,

[0029] (2) Refining: Fully mix the raw materials in step (1), and refine after stirring evenly; the fineness of refining is less than or equal to 80 μm;

[0030] (3) Kneading: knead the raw materials after refining in step (2) in a kneader for 5-10 minutes; the kneading temperature is controlled at 60-75°C;

[0031] (4) Extrusion: Extrude the kneaded raw materials in the extruder; the extrusion temperature is controlled at 155-180°C;

[0032] (5) Refining plastic: control the temperature at 160-175°C, refining plastic to obtain finished products;

[0033] Further, t...

Embodiment 1

[0036] The processing technology of the wire and cable sheath based on nano-calcium carbonate comprises the following steps:

[0037] (1) batching; Get the raw material of following parts by weight: 58 parts of polyvinyl chloride resins, 15 parts of superfine calcium carbonates, 2 parts of dispersants, 5 parts of stabilizers, 3 parts of lubricants, 15 parts of plasticizers, Oxidant 2 parts

[0038] (2) refining; fully mixing the raw materials in the step (1), stirring evenly and then refining; the refining fineness is equal to 65 μm;

[0039] (3) kneading; the raw materials after step (2) refining were meshed in a kneader for 10 minutes; the kneading temperature was controlled at 65°C;

[0040] (4) Extrusion; extrude the kneaded raw materials in the extruder; the extrusion temperature is controlled at 170°C;

[0041] (5) Refining plastic; control the temperature at 165 ° C, refining plastic, to obtain finished products.

Embodiment 2

[0043] The processing technology of the wire and cable sheath based on nano-calcium carbonate comprises the following steps:

[0044] (1) batching; Get the raw material of following parts by weight: 58 parts of polyvinyl chloride resins, 15 parts of common heavy calcium carbonates, 2 parts of dispersants, 5 parts of stabilizers, 3 parts of lubricants, 15 parts of plasticizers, Antioxidant 2 parts

[0045] (2) refining; fully mixing the raw materials in the step (1), stirring evenly and then refining; the refining fineness is equal to 65 μm;

[0046] (3) kneading; the raw materials after step (2) refining were meshed in a kneader for 10 minutes; the kneading temperature was controlled at 65°C;

[0047](4) Extrusion; extrude the kneaded raw materials in the extruder; the extrusion temperature is controlled at 170°C;

[0048] (5) Refining plastic; control the temperature at 165 ° C, refining plastic, to obtain finished products.

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Abstract

The invention relates to a cable material containing special PVC calcium powder. The cable material is prepared from the following components in parts by weight: 30-80 parts of polyvinyl chloride resin, 10-20 parts of special PVC calcium powder, 2-3 parts of dispersing agent, 5-8 parts of stabilizer, 2-3 parts of lubricant, 10-20 parts of plasticizer, and 2-3 parts of antioxidant. The invention also discloses a preparation method of the cable material. The surface activity of powder is activated under a mechanochemical action, and the surface of the powder is coated with the dispersing agent and is continuously pulverized during the coating process to produce a new coating surface and improve the coating ratio. At the same time, by adding the dispersing agent with a little grinding aidingeffect, the production efficiency is improved, the compatibility of calcium carbonate and a polymer is enhanced, the powder is easy to disperse, is less prone to agglomeration and is of high mechanical strength, and the lubricity, water resistance and high temperature resistance of calcium carbonate are further enhanced, so as to enable calcium carbonate to be widely used in the industry. When thecable material is used for processing a wire and cable cover, the wear resistance, corrosion resistance, fire resistance and low shrinkage rate of a cable are greatly improved, and the cost of production of materials is lowered.

Description

technical field [0001] The invention relates to a cable material containing calcium powder special for PVC and a preparation method thereof. Background technique [0002] In modern society, wires and cables can be seen everywhere. Wire and cable sheaths are widely used in the cable manufacturing process. Their withstand voltage and insulation resistance are relatively high, but their dielectric constant and dielectric loss are relatively large. Generally, they are mainly used as low-voltage (≤ 1KV) and the insulation layer of medium and high voltage (6~10KV) cables. [0003] The main component of the insulating material used for the insulation layer of wire and cable is polyvinyl chloride (PVC), which has the advantages of cheap price, good transparency, flame retardant, good electrical insulation and corrosion resistance, etc., and can be added by adding various additives and Use a variety of molding methods to make soft or hard products with different properties and a wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K3/26C08K5/42C08K5/13H01B3/44
CPCB29C48/92B29C2948/9259B29C2948/92704B29C2948/92885C08K3/26C08K5/13C08K5/42C08K2003/265C08K2201/011H01B3/443C08L27/06
Inventor 林含弘
Owner 江苏东立超细粉体有限公司
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