Experimental data for the magnetic properties of vulcanized natural rubber nanocomposites using vibrating sample magnetometer (VSM)

Base isolation is a technique installed to absorb any movement or vibration on the structures. The incorporation of nanocomposites into elastomer as the interesting materials especially for the active stiffness and vibration control of structural systems. A base isolator is made up of alternate layers of steel and rubber. The performance of magnetic rubber device is dependent on mechanical and magnetic properties of composite rubber materials. A vibrating sample magnetometer (VSM) is an instrument to detect the magnetic properties. The article provides information on the magnetic properties corresponding to different carbon nanotubes loadings of 0%, 1%, 3% and 5% and different loading of microcarbonyl iron (MCI) i.e. 0% (B0), 10% (B10), 20% (B20) and 30% (B30) in natural rubber compound. The magnetic properties dataset described the data from compression test.


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Base isolation is a technique installed to absorb any movement or vibration on the structures. The incorporation of nanocomposites into elastomer as the interesting materials especially for the active stiffness and vibration control of structural systems. A base isolator is made up of alternate layers of steel and rubber. The performance of magnetic rubber device is dependent on mechanical and magnetic properties of composite rubber materials. A vibrating sample magnetometer (VSM) is an instrument to detect the magnetic properties. The article provides information on the magnetic properties corresponding to different carbon nanotubes loadings of 0%, 1%, 3% and 5% and different loading of microcarbonyl iron (MCI) i.e. 0% (B0), 10% (B10), 20% (B20) Subject Civil and Structural Engineering, Composite, Material Science Engineering Specific subject area Material Characterization, Mechanical Properties, Polymer Physics. Type of data Table  Text Graph Figure  The cure characteristic parameters measured include scorch time, cure time, maximum torque and torque differences. The compound batches had been left at least 16 h before being cut and tested. The curing temperature was conducted at 150 °C. The test pieces had been conditioned at 23 °C for at least three hours before conducting the testing. The composite samples were measured at room temperature in the range of approximately -15,0 0 0 to + 15,0 0 0 Gauss (G) magnetic field with magnetic moment of 3 to 5 emu/g. The samples were compounded under two (2) variations; i) containing the same amount of magnetic fillers, which is about 30 pphr in the composites but vary in nanocarbon loading i.e. 0%, 1%, 3% and 5% and ii) samples containing the same amount of 1 pphr nanocarbon fillers, in the composites with different loading of microcarbonyl iron (MCI) i.e. 0% (B0), 10% (B10), 20% (B20) and 30% (B30). Five test pieces of samples were prepared in the range of 2 mm x 2 mm to 3 mm x 3 mm, as small as possible to suit the 4 mm x 4 mm tube holder of the VSM to investigate the magnetic properties of vulcanized natural rubber nanocomposites. Data

Value of the Data
• A vibrating-sample magnetometer (VSM) test is a scientific instrument that measures magnetic properties of materials as a function of magnetic field to find deposits of iron because they can measure the magnetic field variations caused by the deposits. The precision and accuracy of VSM's are quite high even among other magnetometers and VSM's further allow for a sample to be tested at varying angles with respect to its magnetization letting researchers minimize the effects of external influences. • The 2 sets of data presented shows that set 1; the four different carbon nanotubes loadings of 0%, 1%, 3% and 5% and set 2; four different loading of microcarbonyl iron with 0%, 10%, 20% and 30%. Hence, this data is useful because it includes a variety of filler types and tested with different sample percentages. The choice of the different carbon nanotubes loading and microcarbonyl iron loading used in this study due to the most optimum values adopted by many researchers for the application of carbon nanotubes and microcarbonyl iron for elastomer. • Data presented here could be helpful in further research on magnetic rubber modification of natural rubber compound. Due to rubber properties are depending on compounding ingredients especially vulcanization system, type and amount of filler and other special ingredients for better performance. • These data have important significance for the basic parameters for the design of elastomeric bearings used for isolation of structure from external vibration like earthquake.

Objective
I To characterize and enhance the mechanical properties of nanocomposite natural rubber elastomer. II To determine magnetic properties of nanocomposite material using Vibrating Sample Magnetometer (VSM) Test.

Data Description
Data presented in this article was used to investigate the performance of nanocomposites elastomer due to effect of carbon nanotubes loading. The mechanical test is conducted through this magnetic test which affect the dispersion of the fillers hence. The data are focused on the mechanical properties of magnetic iron filled natural rubber composites which gives significant effect to the magnetic properties of sample to be used as elastomer for Seismic Isolator.
The raw data of the magnetic test for with different nanocarbon loading are tabulated in Table 1 and the raw data for the Effect of variation of microcarbonyl iron are tabulated in Table 2 .

Materials
Elastic matrix and magnetic particles are the main ingredients of nanocomposites elastomer. In this experiment study, Standard Malaysian Rubber (SMR) L grade natural rubber was chosen as matrix-based nanocomposites natural rubber compound as shown in Fig. 1 . Fig. 2 shows the carbo nanotubes filler was purchased from Chengdo Organic Chemical Co. Ltd., Chinese Academy of Sciences. In order to develop the nanocomposites natural rubber compounds, carbonyl iron particles with The diameter and density of the iron particle are in range of 6 to 9 μm and 7.86 g/cm 3 , respectively were purchased from Sigma-Aldrich Sdn. Bhd. (M) ( Fig. 3 ).
Carbon black N220 was used as the reinforcing filler of the nanocomposites elastomer compound. Other materials such as zinc oxide (ZnO), stearic acid and sulphur are also required as the basic ingredients of compounding unfilled rubber or filled rubber. In rubber standard com-   pounds, (ZnO) and stearic acid have been used as activator and co-activator respectively. Cyclohexyl benzothiazolesulfenamide (CBS) and tetramethylthiuram disulphide (TMTD) are the accelerator and additives that had been selected to increase the properties of elastomers. Besides that, they were added as to help the vulcanization system. Fig. 4 . Shows the rubber compounding components.

Experimental Design and Methods
There are two batches of sample as shown in Fig. 5 for Batch A with different nanocarbon content and Fig. 6 for Batch B with different microcarbonyl iron content. Before conducting the test, the weight of each sample was determined in gram by an analytical balance. A small amount of high vacuum grease was used to attach the samples to the tube holder. Then, the tube holder was inserted in the VSM. The input data such as weight of the samples and the magnetic moment were recorded in the computer system. Thus, the test was run until the result obtained. For comparison, pure microcarbonyl iron was checked in the powder state. The microcarbonyl iron was sealed with the transparent adhesive tape on both sides before being tested to ensure fine powder adheres throughout the test. The compounding process of a batch    mass of nanocomposites elastomer was made by following BS ISO 2393 [1] . The rubber compounds were obtained in sheets and conditioned at 23 ±°C for 24 h before cure assessment. The compounding process of nanocomposites elastomer development was done using two roll mills and a conventional vulcanization system. The cure assessment of nanocomposites elastomer was determined by Rheometer 100. The temperature was set at 150 °C for each sample.
For the material to be used for civil engineering applications, the nanocomposites elastomer compound should satisfy and achieve the following general performances and quality control requirements according to BS ISO 6446 [2] .
The performance of magnetic rubber device is dependent on mechanical and magnetic properties of composite rubber materials. A vibrating sample magnetometer (VSM) is an instrument to detect the magnetic properties.
The magnetic field versus magnetization was carried out to study the magnetic characteristics of the nanocomposite samples. VSM Lakeshore 7404 Series was used to analysis the magnetic properties of nanocomposite material as shown in Fig. 7 .

Variation of Nanocarbon Loading
At first, the pure magnetic filler, microcarbonyl iron (MCI) was checked in the powder state. The magnetic value of microcarbonyl iron has a value of 84.017 emu/g, which is supposedly greater than the composites. A0 is the control sample where to identify the effect of nanocarbon in the presence of microcarbonyl iron in the composite. The raw data on the magnetic properties of composites with different nanocarbon loading are tabulated in Table 1 . Fig. 8 shows the hysteresis loops for NCE composites with the different nanocarbon loading.

Variation of Microcarbonyl Iron Loading
In variation of microcarbonyl iron loading, all samples were expected to show their magnetic properties. B0 is the control sample where to identify the presence of magnetic properties in the composite. The optimum amount of 1 pphr CNTs in specimens are fabricated with different microcarbonyl iron loadings: 0 pphr (B0), 10 pphr (B10), 20 pphr (B20), and 30 pphr (B30). Table 2 shows the data with different microcarbonyl iron loading with magnetic strength is about 14,0 0 0 G. Fig. 9 shows the hysterisis loops with different microcarbonyl iron loading with magnetic strength is about 14,0 0 0 G.