Thermal Stability and Shielding Performance of Boron Carbide/Lead/Polyethylene Composite Materials

doi:10.19894/j.issn.1000-0518.230390

Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (6): 890-898.DOI: 10.19894/j.issn.1000-0518.230390

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Thermal Stability and Shielding Performance of Boron Carbide/Lead/Polyethylene Composite Materials

Chao WANG¹(), Yong-Jun PENG¹, Bo ZHU², Yi HAN³

^1.China Nuclear Power Operations Management Co. ，Ltd. ，Jiaxing 313400，China
^2.Zhonghe 404 Co. ，Ltd. First Branch，Jiayuguan 732500，China
^3.China Institute for Radiation Protection，Taiyuan 030006，China

Received:2023-12-14 Accepted:2024-05-05 Published:2024-06-01 Online:2024-07-09
Contact: Chao WANG
About author:wangchao20230@163.com
Supported by:
Shanxi Province Applied Basic Research Program(20210302124178)

Abstract

Abstract:

The preparation， thermal stability and shielding properties of boron carbide/lead/polyethylene composites were studied. Boron carbide/lead/polyethylene composites with mass fraction of 3%， 4%， 5% and 6% boron carbide and different thicknesses were prepared， and the related properties of the composites were evaluated. The results show that when different samples are at the same thickness， adding 6% boron carbide composite has better high-temperature basic properties. Thermogravimetric test shows that the mass loss of the sample is low and its basic properties are effectively maintained. In addition， the composite with 6% boron carbide has the best application effect and better particle shielding performance. The results provide a reliable basis for the preparation and performance evaluation of boron carbide lead polyethylene composites.

Key words: Boron carbide, Polyethylene, Composite materials, Neutron shielding performance, Thermogravimetric testing

CLC Number:

O631

Chao WANG, Yong-Jun PENG, Bo ZHU, Yi HAN. Thermal Stability and Shielding Performance of Boron Carbide/Lead/Polyethylene Composite Materials[J]. Chinese Journal of Applied Chemistry, 2024, 41(6): 890-898.

Figures/Tables 8

References 18

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Sample components	Mass fraction of each substance in each sample/%
Sample components	Y1	Y2	Y3	Y4
HDPE	7.51	7.17	6.85	6.54
Lead sand	89.39	88.72	88.04	87.35
B₄C	3.00	4.00	5.00	6.00
Calcium stearate	0.03	0.03	0.03	0.03
KY7910	0.04	0.04	0.04	0.04
KH500	0.04	0.04	0.04	0.04

Sample components	Mass fraction of each substance in each sample/%
Sample components	Y1	Y2	Y3	Y4
HDPE	7.51	7.17	6.85	6.54
Lead sand	89.39	88.72	88.04	87.35
B₄C	3.00	4.00	5.00	6.00
Calcium stearate	0.03	0.03	0.03	0.03
KY7910	0.04	0.04	0.04	0.04
KH500	0.04	0.04	0.04	0.04

Sample number	Temperature/℃	Tensile strength/MPa	Impact strength/（kJ?m^－2）	Elongation at break/%	Coefficient of variation in tensile strength	Coefficient of variation of impact strength	Coefficient of variation of elongation at break
Y1	50	27	20	45	0.059 5	0.113 5	0.048 8
	60	26	19	42
	80	24	16	41
Y2	50	29	23	56	0.055 2	0.097 6	0.046 9
	60	28	22	54
	80	26	19	51
Y3	50	31	26	59	0.070 9	0.061 9	0.069 3
	60	30	25	53
	80	27	23	52
Y4	50	34	28	61	0.030 3	0.037 0	0.043 1
	60	33	27	58
	80	32	26	56

Sample number	Temperature/℃	Tensile strength/MPa	Impact strength/（kJ?m^－2）	Elongation at break/%	Coefficient of variation in tensile strength	Coefficient of variation of impact strength	Coefficient of variation of elongation at break
Y1	50	27	20	45	0.059 5	0.113 5	0.048 8
	60	26	19	42
	80	24	16	41
Y2	50	29	23	56	0.055 2	0.097 6	0.046 9
	60	28	22	54
	80	26	19	51
Y3	50	31	26	59	0.070 9	0.061 9	0.069 3
	60	30	25	53
	80	27	23	52
Y4	50	34	28	61	0.030 3	0.037 0	0.043 1
	60	33	27	58
	80	32	26	56

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Thermal Stability and Shielding Performance of Boron Carbide/Lead/Polyethylene Composite Materials

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