Preparation method of novel low-noise EVA (ethylene vinyl acetate copolymer) cable material

A low-noise, cable material technology, used in circuits, electrical components, plastic/resin/wax insulators, etc., can solve problems such as poor anti-noise performance, inability to use low-noise cables, and limited application scope, to improve anti-noise performance. , the effect of reducing noise value and improving compatibility

Active Publication Date: 2015-07-01
CGN DELTA (ZHONGSHAN) POLYMER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the anti-noise performance of the electric wire and cable material that this invention provides is relatively poor, the noise value of t

Method used

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  • Preparation method of novel low-noise EVA (ethylene vinyl acetate copolymer) cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A new type of low-noise EVA cable material preparation method, the steps are as follows:

[0026] (1) Crush the natural coral with a pulverizer and add it to a 10% sodium hydroxide solution, soak for 2 hours and then move it to an acetone solution for ultrasonic cleaning for 30 minutes, take it out, and dry it at 80°C for 3 hours to obtain coral powder ;

[0027] (2) Ball mill the coral powder obtained in step (1) with a ball mill for 10 hours, add it to a 40% ethanol solution and stir and mix to form a suspension, add polyethylene glycol to the suspension and magnetically stir for 2 hours, then discharge Then it was placed in a vacuum drying oven at 90°C and vacuum dried for 10 hours, taken out, ground, and passed through a 300-mesh sieve to obtain modified coral powder. The weight ratio of coral powder, ethanol solution and polyethylene glycol was 48:48: 1;

[0028] (3) Add the nano boron fiber to the toluene solution and soak for 48 hours, place it in a drying oven to dry...

Embodiment 2

[0031] A new type of low-noise EVA cable material preparation method, its steps are as follows:

[0032] (1) Crush the natural coral with a pulverizer and add it to a 10% sodium hydroxide solution, soak for 2 hours and then move it to an acetone solution for ultrasonic cleaning for 30 minutes, take it out, and dry it at 80°C for 3 hours to obtain coral powder ;

[0033] (2) Ball mill the coral powder obtained in step (1) with a ball mill for 10 hours, add it to a 40% ethanol solution and stir and mix to form a suspension, add polyethylene glycol to the suspension and magnetically stir for 2 hours, discharge After that, it was placed in a vacuum drying box for vacuum drying at 90°C for 10 hours, taken out, ground, and passed through a 300-mesh sieve to obtain modified coral powder. The weight ratio of coral powder, ethanol solution, and polyethylene glycol was 48:48: 1;

[0034] (3) Add the nano boron fiber to the toluene solution and soak for 48 hours, put it in a drying oven to dr...

Embodiment 3

[0037] A new type of low-noise EVA cable material preparation method, its steps are as follows:

[0038] (1) Crush the natural coral with a pulverizer and add it to a 10% sodium hydroxide solution, soak for 2 hours and then move it to an acetone solution for ultrasonic cleaning for 30 minutes, take it out, and dry it at 80°C for 3 hours to obtain coral powder ;

[0039] (2) Ball mill the coral powder obtained in step (1) with a ball mill for 10 hours, add it to a 40% ethanol solution and stir and mix to form a suspension, add polyethylene glycol to the suspension and magnetically stir for 2 hours, discharge After that, it was placed in a vacuum drying box for vacuum drying at 90°C for 10 hours, taken out, ground, and passed through a 300-mesh sieve to obtain modified coral powder. The weight ratio of coral powder, ethanol solution, and polyethylene glycol was 48:48: 1;

[0040] (3) Add the nano boron fiber to the toluene solution and soak for 48 hours, place it in a drying oven to ...

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Abstract

The invention provides a preparation method of a novel low-noise EVA (ethylene vinyl acetate copolymer) cable material. The preparation method comprises the following steps: (1) crushing natural corals, adding into a sodium hydroxide solution, performing ultrasonic cleaning after soaking, taking out, and drying to obtain coral powder; (2) performing ball milling on the coral powder, adding into an ethanol solution, mixing to obtain a suspension, adding polyethylene glycol, then performing magnetic stirring, discharging, performing vacuum drying, taking out, grinding, and screening to obtain modified coral powder; (3) soaking nano boron fibers in a methylbenzene solution, drying until the weight is constant, adding into a potassium permanganate solution, performing thermostatic water bath treatment, discharging, and drying until the weight is constant to obtain modified nano boron fibers; and (4) mixing the modified coral powder and an EVA glue solution to obtain a mixed glue solution, soaking the modified nano boron fibers into the mixed glue solution, twisting in parallel, cutting, putting a unidirectional fiber pre-soaking fabric into a flat mold, and performing hot pressing molding in a hot press, thereby obtaining the low-noise EVA cable material. The cable material prepared by the method provided by the invention is relatively good in noise resistance and can be used for low-noise cables.

Description

Technical field: [0001] The invention relates to a cable material, in particular to a method for preparing a novel low-noise EVA cable material. Background technique: [0002] EVA, named ethylene-vinyl acetate copolymer in Chinese, is the fourth largest ethylene series copolymer after HDPE, LDPE, and LLDPE. With the increase of vinyl acetate (VA) content, the elasticity, flexibility and adhesion of EVA , Compatibility, transparency and solubility are also improved accordingly. According to the content of VA, it can be divided into three categories: those with VA content of 5%-40% are generally called EVA resins, which are mainly used to modify polyethylene, manufacture wire and cable materials, films and other molded products and mixtures Etc.; VA content of 40%-70%, generally called EVA elastomer, mainly used as rubber elastomer, PVC modifier and automotive industry parts, etc.; VA content of 70%-95%, usually made into emulsion The state, called EVC emulsion, is mainly used as...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K9/04C08K9/02C08K3/26C08K7/06H01B3/44
CPCC08K3/26C08K7/06C08K9/02C08K9/04C08K9/08C08K2003/265C08K2201/011C08L2203/202C08L2203/30H01B3/441C08L23/0853
Inventor 陆志强
Owner CGN DELTA (ZHONGSHAN) POLYMER CO LTD
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