Guar gum-boric acid surface-crosslinking modified precipitated calcium carbonate, preparation method and application thereof, and paper
A technology for precipitating calcium carbonate and guar gum boric acid, which is applied in the direction of textiles and papermaking, papermaking, fibrous fillers, etc., and can solve the problems of reducing the application effect and not being very firm.
Active Publication Date: 2017-05-24
WUZHOU UNIV
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Problems solved by technology
[0005] The modification of PCC paper filler mainly depends on the physical or hydrogen bonding between the modified material and calcium carbonate. Since this combination is not very strong, its application effect is reduced.
Method used
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Experimental program
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Embodiment 1
[0047] Step 1: Add guar gum equivalent to 0.5% of the weight of PCC to the three-slope mouth containing 90g of water, heat up to 80°C, stir and disperse at 400rpm, and then add 10g of PCC;
[0048] Step 2: Add boric acid equivalent to 7% by weight of PCC into the reactor, and stir for 10 minutes;
[0049] Step 3: collecting the reaction product by centrifugation and washing and drying it;
[0050] Step 4: Grind MPCC and PCC finely with a mortar, pass through a 200-mesh copper mesh, analyze and characterize them with a scanning electron microscope, Fourier transform infrared spectrometer, elemental analyzer, etc. respectively.
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The invention provides a guar gum-boric acid surface-crosslinking modified precipitated calcium carbonate. Guar gum is crosslinked on the surface of the modified precipitated calcium carbonate through boric acid. The invention aims to provide a modified precipitated calcium carbonate which can obviously enhance the tensile index, burst index and tear index of paper and the single-pass retention rate of the filler when being used in the filler of the paper. The invention also provides a preparation method and application of the modified precipitated calcium carbonate. Besides, the invention also provides a paper containing the modified precipitated calcium carbonate.
Description
technical field [0001] The invention relates to the field of paper-making filler modification, in particular to guar gum boric acid surface cross-linking modified precipitated calcium carbonate, its preparation method, application and a kind of paper. Background technique [0002] At present, the most commonly used fillers in the paper industry are calcium carbonate (ground calcium carbonate, precipitated calcium carbonate), kaolin and talcum powder. These three types of fillers account for 80% to 90% of the total filler usage. Among them, the paper industry in North America is dominated by kaolin. Calcium carbonate is the main product, while talcum powder is the main product in Asia. In addition, it also includes titanium dioxide, zinc sulfide, calcium sulfate, diatomaceous earth, barium sulfate, aluminosilicate, calcium silicate and some organic fillers. Since the 1970s, as the production of high-grade paper has changed from acidic to neutral or alkaline, calcium carbonat...
Claims
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Patent Timeline
Login to View More IPC IPC(8): D21H17/69D21H21/14C09C1/02C09C3/10
CPCC09C1/022C09C3/10D21H17/69D21H21/14
Inventor 谢玮刘振华
Owner WUZHOU UNIV
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