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A platform for research: civil engineering, architecture and urbanism
High-strength anti-cracking gypsum plaster board and preparation method thereof
The invention relates to the field of gypsum plaster boards, in particular to a high-strength anti-cracking gypsum plaster board and a preparation method thereof. The lignin is modified to prepare a phenolic resin glue solution, and the phenolic resin glue solution is blended with the nano-graphite to prepare the gypsum plaster board. A phenolic resin matrix prepared from the modified lignin is lower in brittleness and higher in mechanical strength, so that the breaking strength of the gypsum plaster board is improved, and the anti-cracking effect is better; the graphite can improve the electromagnetic shielding effect of the gypsum plaster board. In addition, the phenolic resin not only can fill gaps of the gypsum, coat adjacent gypsum particles and improve the mechanical property of the gypsum, but also can improve the water resistance of the gypsum board. The nano-graphite is mixed with the modified phenolic resin glue solution, so that the nano-graphite can be more uniformly dispersed in the gypsum board, and the improvement effect on the product performance is superior to that of direct blending.
本发明涉及纸面石膏板领域，具体为一种高强度抗裂纸面石膏板及其制备方法。本发明先对木质素进行改性制备酚醛树脂胶液，在于纳米石墨共混制备纸面石膏板。经过改性木质素制备的酚醛树脂基体的脆性更低，力学强度更强，从而改善纸面石膏板的抗折强度，防裂效果更佳；石墨能够提高纸面石膏板的电磁屏蔽效果。此外，酚醛树脂不仅能够填充石膏的空隙、涂覆相邻石膏颗粒，提高石膏力学性能，同时也可以提高石膏板的耐水性能。通过将纳米石墨与改性酚醛树脂胶液混合，能够实现纳米石墨在石膏板中更均匀地分散，对产品性能的改善作用优于直接共混。
High-strength anti-cracking gypsum plaster board and preparation method thereof
The invention relates to the field of gypsum plaster boards, in particular to a high-strength anti-cracking gypsum plaster board and a preparation method thereof. The lignin is modified to prepare a phenolic resin glue solution, and the phenolic resin glue solution is blended with the nano-graphite to prepare the gypsum plaster board. A phenolic resin matrix prepared from the modified lignin is lower in brittleness and higher in mechanical strength, so that the breaking strength of the gypsum plaster board is improved, and the anti-cracking effect is better; the graphite can improve the electromagnetic shielding effect of the gypsum plaster board. In addition, the phenolic resin not only can fill gaps of the gypsum, coat adjacent gypsum particles and improve the mechanical property of the gypsum, but also can improve the water resistance of the gypsum board. The nano-graphite is mixed with the modified phenolic resin glue solution, so that the nano-graphite can be more uniformly dispersed in the gypsum board, and the improvement effect on the product performance is superior to that of direct blending.
本发明涉及纸面石膏板领域，具体为一种高强度抗裂纸面石膏板及其制备方法。本发明先对木质素进行改性制备酚醛树脂胶液，在于纳米石墨共混制备纸面石膏板。经过改性木质素制备的酚醛树脂基体的脆性更低，力学强度更强，从而改善纸面石膏板的抗折强度，防裂效果更佳；石墨能够提高纸面石膏板的电磁屏蔽效果。此外，酚醛树脂不仅能够填充石膏的空隙、涂覆相邻石膏颗粒，提高石膏力学性能，同时也可以提高石膏板的耐水性能。通过将纳米石墨与改性酚醛树脂胶液混合，能够实现纳米石墨在石膏板中更均匀地分散，对产品性能的改善作用优于直接共混。
High-strength anti-cracking gypsum plaster board and preparation method thereof
一种高强度抗裂纸面石膏板及其制备方法
CHENG YUEHAO (author)
2023-05-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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