EPR(ethylene propylene rubber)/ZnO nano composite material synthesized in situ and preparation method thereof

A nano-composite material and in-situ synthesis technology, applied in the field of nano-composite materials and its preparation, can solve the problems of insignificant reinforcing effect, complex dispersion process, and inability to directly add, etc., achieve excellent reinforcing effect, simple preparation process, evenly distributed effect

Active Publication Date: 2015-04-15
ANHUI HUALING CABLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ethylene-propylene rubber is widely used in automotive parts, wires and cables, seals and other fields due to its excellent electrical insulation, ozone resistance, weather resistance, etc., but due to its own The mechanical properties are poor, so it is necessary to add various reinforcing agents to achieve higher mechanical properties during use.
Zinc oxide is a commonly used rubber additive. It is generally added together with stearic acid to play the role of a processing aid. However, as a micron-sized material, the reinforcing effect of this material is not obvious
Nano-scale zinc oxide has a good reinforcing effect, but generally has the disadvantages of poor dispersion and easy agglomeration, so it cannot be added directly when used, and a complicated pre-dispersion process is required

Method used

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  • EPR(ethylene propylene rubber)/ZnO nano composite material synthesized in situ and preparation method thereof
  • EPR(ethylene propylene rubber)/ZnO nano composite material synthesized in situ and preparation method thereof
  • EPR(ethylene propylene rubber)/ZnO nano composite material synthesized in situ and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 0.2 mol of zinc acetate and 0.2 mol of hexamethylenetetramine respectively, place them in 200ml of deionized water, ultrasonically dissolve, mix and dilute to 1L, place in a constant temperature water tank at 60°C, react for 2 hours, pump After filtration, washing, and drying at 60°C, a white solid was obtained, which was observed under a scanning electron microscope (SEM) as a lamellar structure, such as figure 1 shown.

[0021] Then add 100g of ethylene-propylene rubber, 1g of layered zinc hydroxide and 2g of dicumyl peroxide into the open mill in turn, and knead at 50°C for 10min to obtain EPR / Zn(OH) 2 Composite mixed rubber; finally put the mixed rubber on a flat vulcanizing machine and vulcanize at 150 °C for 10 minutes to obtain EPR / ZnO nanocomposites. The phase transition process during the vulcanization process is as follows figure 2 As shown, the dispersion effect and mechanical properties are as image 3 and Figure 4 shown.

Embodiment 2

[0023] Weigh 0.2 mol of zinc acetate and 0.2 mol of hexamethylenetetramine respectively, place them in 200ml of deionized water, ultrasonically dissolve, mix and dilute to 1L, place in a constant temperature water tank at 65°C, react for 1 hour, pump After filtration, washing, and drying at 60°C, a white solid was obtained, which was observed under a scanning electron microscope (SEM) as a lamellar structure, such as figure 1 shown.

[0024] Then 100g of ethylene-propylene rubber, 2g of layered zinc hydroxide and 2g of dicumyl peroxide were sequentially added into the open mill, and mixed at 50°C for 10min to obtain EPR / Zn(OH) 2 Composite mixed rubber; finally put the mixed rubber on a flat vulcanizing machine and vulcanize at 150 °C for 10 minutes to obtain EPR / ZnO nanocomposites. The phase transition process during the vulcanization process is as follows figure 2 As shown, the dispersion effect and mechanical properties are as image 3 and Figure 4 shown.

Embodiment 3

[0026] Weigh 0.2 mol of zinc acetate and 0.2 mol of hexamethylenetetramine respectively, place them in 200ml of deionized water, ultrasonically dissolve, mix and dilute to 1L, place in a constant temperature water tank at 60°C, react for 2 hours, pump After filtration, washing, and drying at 60°C, a white solid was obtained, which was observed under a scanning electron microscope (SEM) as a lamellar structure, such as figure 1 shown.

[0027] Then 100g of ethylene-propylene rubber, 4g of layered zinc hydroxide and 2g of dicumyl peroxide were sequentially added into the open mill, and mixed at 50°C for 10min to obtain EPR / Zn(OH) 2 Composite mixed rubber; finally put the mixed rubber on a flat vulcanizing machine and vulcanize at 150 °C for 10 minutes to obtain EPR / ZnO nanocomposites. The phase transition process during the vulcanization process is as follows figure 2 As shown, the dispersion effect and mechanical properties are as image 3 and Figure 4 shown.

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Abstract

The invention provides an EPR(ethylene propylene rubber) / ZnO nano composite material synthesized in situ and a preparation method thereof. The material is prepared by mixing ethylene propylene rubber, dicumyl peroxide and nano dicumyl peroxide. The method comprises the following steps: first, heating hexamethylenetetramine and zinc acetate or zinc nitrate in a water bath in a temperature range of 50-70 DEG C to synthesize layered zinc hydroxide; then, uniformly mixing the raw materials in a certain weight ratio; adding the mixture into an open mill or an internal mixer to mix; and then, placing on a press vulcanizer to preform and form; realizing in situ conversion of the layered zinc hydroxide into rod zinc oxide by means of a high temperature vulcanization process of EPR; and finally, preparing the EPR / ZnO nano composite material which has a better reinforcing effect and is uniformly dispersed. The EPR / ZnO nano composite material provided by the invention has better dispersibility and reinforcing effect and is simple in preparation process.

Description

technical field [0001] The invention relates to a nanocomposite material and a preparation method thereof, in particular to a PR / ZnO nanocomposite material with better dispersibility and reinforcing effect and a preparation method thereof. Background technique [0002] Ethylene-propylene rubber is widely used in automotive parts, wires and cables, seals and other fields due to its excellent electrical insulation, ozone resistance, and weather resistance. However, due to its poor mechanical properties, various supplements need to be added when using it. Strong agent to achieve higher mechanical properties. Zinc oxide is a commonly used rubber additive. It is generally added together with stearic acid to play the role of a processing aid. However, as a micron-sized material, the reinforcing effect of this material is not obvious. Nano-scale zinc oxide has a good reinforcing effect, but generally has the disadvantages of poor dispersion and easy agglomeration. It cannot be add...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/16C08K7/00C08K3/22C08K5/14
CPCC08K3/22C08K5/14C08K7/00C08K2003/2296C08K2201/011C08L23/16
Inventor 闵玉琳姜源叶斌陈龙张献田兴友
Owner ANHUI HUALING CABLE GRP
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