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Polyvinyl chloride elastomer containing fumed silica

A technology of fumed silica and polyvinyl chloride, used in the field of wire and cable materials, can solve the problems of poor lasting stability, destruction of material stability, mutual influence of sensitive reagents, etc., and achieve good thermal stability and strong industrial application value. And development prospects, the effect of simple preparation process

Inactive Publication Date: 2020-01-07
JIANGSU DAMAONIU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, various light stabilizers, heat stabilizers, and a large number of flame retardants are often added to improve the performance of the product in various aspects, but the common problems are poor lasting stability, mutual influence between sensitive reagents, and the addition of too many reagents. Disadvantages such as destroying the stability of the material

Method used

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  • Polyvinyl chloride elastomer containing fumed silica
  • Polyvinyl chloride elastomer containing fumed silica

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preparation example Construction

[0122] The second aspect of the present invention provides a kind of preparation method of polyvinyl chloride elastomer, comprises the steps:

[0123] (1) Add polyvinyl chloride, nitrile rubber, fumed silica, nano-titanium dioxide, plasticizer, flame retardant, antistatic agent, and foaming agent to the high-speed mixer in sequence at 800-900rpm Mix evenly at a stirring speed of 100°C, heat up to 80-100°C and continue stirring for 15-25 minutes to obtain mixture A;

[0124](2) Cool the mixture A prepared in step (1) to 70-80° C. at a stirring speed of 500-600 rpm to obtain mixture B;

[0125] (3) Add the mixture B prepared in step (2) into an extruder, extrude and granulate to obtain a polyvinyl chloride elastomer.

[0126] In a preferred embodiment, the preparation method of the polyvinyl chloride elastomer is as follows:

[0127] (1) Add polyvinyl chloride, nitrile rubber, fumed silica, nano-titanium dioxide, plasticizer, flame retardant, antistatic agent, and foaming agen...

Embodiment 1

[0133] Embodiment 1 of the present invention provides a polyvinyl chloride elastomer, in parts by mass, the polyvinyl chloride elastomer comprises 70 parts of polyvinyl chloride, 25 parts of nitrile rubber, 18 parts of filler, 8 parts of plasticizer, 2 parts of flame retardant, 1.5 parts of antistatic agent, 0.8 parts of foaming agent.

[0134] Described nitrile rubber is the nitrile rubber that acrylonitrile mass content is 34%;

[0135] The filler is 12.5 parts of modified fumed silica with a particle diameter of 30nm and 5.5 parts of nano titanium dioxide with a particle diameter of 15nm;

[0136] What described plasticizer selects for use is dioctyl phthalate;

[0137] What described flame retardant selected for use is tricresyl phosphate;

[0138] What described antistatic agent selects for use is the polyethylene glycol that relative molecular weight is 600;

[0139] What described foaming agent selects for use is fatty alcohol polyoxyethylene ether sodium sulfate;

...

Embodiment 2

[0150] Embodiment 2 of the present invention provides a polyvinyl chloride elastomer. In parts by mass, the polyvinyl chloride elastomer includes 65 parts of polyvinyl chloride, 20 parts of nitrile rubber, 14 parts of filler, 6 parts of plasticizer, 1 part of flame retardant, 1 part of antistatic agent, 0.6 part of foaming agent.

[0151] Described nitrile rubber is the nitrile rubber that acrylonitrile mass content is 34%;

[0152] The filler is 10 parts of modified fumed silica with a particle size of 30nm and 4 parts of nano-titanium dioxide with a particle size of 15nm;

[0153] What described plasticizer selects for use is dioctyl phthalate;

[0154] What described flame retardant selected for use is tricresyl phosphate;

[0155] What described antistatic agent selects for use is the polyethylene glycol that relative molecular weight is 600;

[0156] What described foaming agent selects for use is fatty alcohol polyoxyethylene ether sodium sulfate;

[0157] The prepar...

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Abstract

The invention discloses a polyvinyl chloride elastomer containing fumed silica. The polyvinyl chloride elastomer is prepared from the following raw materials in parts by mass: 65-75 parts of polyvinylchloride, 20-30 parts of nitrile rubber, 14-22 parts of filler, 6-10 parts of plasticizer, 1-3 parts of a flame retardant, 1-2 parts of an antistatic agent and 0.6-1 part of a foaming agent. Variousproperties of the fumed silica-containing polyvinyl chloride elastomer prepared by the preparation method disclosed by the invention meet index requirements in GB / T 8815-2008 plasticized polyvinyl chloride compounds for wire and cable, and the fumed silica-containing polyvinyl chloride elastomer has good thermal stability, light stability, insulativity, flame retardancy, antistatic property, thermal insulation property and mechanical properties. Besides, the polyvinyl chloride elastomer containing fumed silica prepared by the invention can be used for preparing underground cables, overhead cables and other wires and cables, the preparation process flow is simple, and the polyvinyl chloride elastomer containing fumed silica has very strong industrial application value and development prospect.

Description

technical field [0001] The invention relates to the field of wire and cable materials, in particular to a polyvinyl chloride elastic material containing fumed silicon dioxide. Background technique [0002] Wire and cable is an indispensable basic equipment for transmitting electric energy, transmitting information and data, and manufacturing various motors, electrical appliances, instruments, automobiles, machine tools and other equipment. It is also an important supporting industry for my country's economic construction and is widely used in various fields of the national economy. Wires and cables are usually laid in tunnels, ditches, cable wells, shafts, and trunking in the form of suspension and stretching. Once a fire occurs, it will spread along the cable and burn to the entire cable laying area, spreading to It has a wide range, causing huge economic losses, threatening people's lives and property, and causing environmental pollution. [0003] At present, most convent...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L9/02C08L71/02C08K13/06C08K7/26C08K3/22C08K5/12C08K5/523C08J9/30H01B3/44
CPCC08J9/0023C08J9/0038C08J9/0061C08J9/0071C08J9/009C08J9/0095C08J9/04C08J9/30C08J2207/06C08J2327/06C08J2409/02C08J2471/02H01B3/443
Inventor 白朋
Owner JIANGSU DAMAONIU NEW MATERIAL TECH CO LTD
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