Modification method and device for heavy calcium carbonate special for wires and cables

A heavy calcium carbonate, wire and cable technology, applied in chemical instruments and methods, fibrous fillers, dyeing physical treatment, etc., can solve the problems of mechanical properties decline of composite materials, poor modification effect, interface defects, etc. Short sex time, shorten modification time, good compatibility effect

Active Publication Date: 2016-05-11
HUNAN LEIXIN NEW MATERIAL TECH
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Problems solved by technology

However, calcium carbonate particles have strong hydrophilic carboxyl groups distributed on the surface, which have different interfacial properties and poor compatibility with the organic polymer matrix material, making it difficult to disperse evenly in the matrix material and form a strong binding force with the matrix material, resulting in two The interface defects between materi

Method used

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  • Modification method and device for heavy calcium carbonate special for wires and cables
  • Modification method and device for heavy calcium carbonate special for wires and cables

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Embodiment Construction

[0018] exist Figure 1A with Figure 1B Among them, the method for modifying heavy calcium carbonate dedicated to electric wire and cable is characterized in that it comprises the following steps:

[0019] 1) Add heavy calcium carbonate into the grinding device 2 and grind it into fine powder to an average particle size of 1500-2000 mesh;

[0020] 2) Add water, stearic acid, aluminate coupling agent and polyester hyperdispersant to the powder through four feeding pipes 1.12 to form a mixture. Water accounts for 0.4~0.5% of the total weight of the mixture. Fatty acid accounts for 0.9%~1.1% of the total weight of the mixture, aluminate coupling agent accounts for 1%~1.2% of the total weight of the mixture; polyester hyperdispersant accounts for 0.5~0.8% of the total weight of the mixture, put the mixture into In the microwave modification device 1, carry out microwave heating modification, the heating temperature is 80 ° C, and the heating time is 8 min;

[0021] 3) Use the dr...

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Abstract

The invention relates to a modification method for heavy calcium carbonate special for wires and cables. The modification method is characterized by including the following steps that heavy calcium carbonate is added into a grinding device and ground into fine powder with the average particle size being 1500-2000 meshes; water, stearic acid, an aluminate coupling agent and polyester type hyperdispersant are added into the powder through four feeding pipes respectively and are stirred to form a mixture, wherein the water, stearic acid, the aluminate coupling agent and the polyester type hyperdispersant account for 0.4-0.5%, 0.9-1.1%, 1-1.2% and 0.5-0.8% of the total weight of the mixture respectively. The modification method has the advantages that the time for modifying heavy calcium carbonate is shorter due to the function from inside to outside, modification is more sufficient, modified heavy calcium carbonate has heat resistance and dispersity, and can be compatible with a resin organic carrier and a high polymer material, so that toughness, brightness, plastic thermal hysteresis performance and bending strength of wires and cables are improved, and light resistance and ageing resistance are enhanced.

Description

technical field [0001] The invention belongs to the field of mineral powder chemical industry, in particular to a special heavy calcium carbonate modification method and device for electric wires and cables. Background technique [0002] Ground calcium carbonate is a very important functional inorganic filler, which is widely used in the fields of plastics, rubber, coatings and papermaking industries. However, calcium carbonate particles have strong hydrophilic carboxyl groups distributed on the surface, which have different interfacial properties and poor compatibility with the organic polymer matrix material, making it difficult to disperse evenly in the matrix material and form a strong binding force with the matrix material, resulting in two The interface defects between materials reduce some mechanical properties of composite materials, and the ground calcium carbonate used for wires and cables needs to have good compatibility and phase plasticity with resin organic car...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/04C09C3/08C09C3/10C08K9/04C08K3/26
CPCC01P2004/61C08K3/26C08K9/04C08K2003/265C09C1/021C09C3/006C09C3/041C09C3/043C09C3/08C09C3/10
Inventor 李刚周俊蒋冬华
Owner HUNAN LEIXIN NEW MATERIAL TECH
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