A kind of preparation method of high temperature aging resistant natural fiber paper
A technology of natural fiber and high temperature resistance, which is applied in the direction of natural cellulose pulp/paper, cellulose pulp post-treatment, fiber raw material treatment, etc. It can solve the problems of mechanical strength decline and difficulty in meeting market demand, so as to improve mechanical strength and increase Physical entanglement point, the effect of improving the high temperature resistance grade
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Embodiment 1
[0013] A method for preparing high temperature aging-resistant natural fiber paper, comprising the following contents: making a mixed slurry from natural softwood pulp and hardwood pulp, concentrating the slurry to a water content of 3%, adding 5% of its weight Nucleotide solution with a mass concentration of 4%, stirred evenly, soaked at 40-45°C for 1.5-2 hours, and then refined with a refining unit to make the beating degree 28°SR; the ground Concentrate the slurry again to a water content of 0.8-1%, put the slurry in a sealed bag, and balance the moisture for 24 hours at a temperature of 10°C for later use; Pressing and drying, when drying to a water content of 33%, impregnating the surface with a binding liquid containing six-membered heterocyclic compounds, drying and hot pressing to obtain a finished product.
[0014] Wherein, the weight ratio of the natural color softwood pulp and hardwood pulp is 2-4:1; the refining unit includes a deflagging machine and two refining m...
Embodiment 2
[0019] A method for preparing natural fiber paper resistant to high temperature and aging, comprising the following contents: preparing a mixed slurry from uncolored softwood pulp and hardwood pulp, concentrating the slurry to a water content of 3-4%, adding an amount equivalent to its weight 4% nucleotide solution with a mass concentration of 5%, stir evenly, soak for 1.5-2 hours at 40-45°C, and then use a refining unit to refine the pulp so that the beating degree is 26°SR; Concentrate the good slurry again to a water content of 0.8-1%, put the slurry in a sealed bag, and balance the moisture for 20 hours at a temperature of 12°C, and set aside; after dispersing the products, papermaking is carried out in sequence , rolling and drying. When drying to a moisture content of 35%, the surface is impregnated with a binding liquid containing a six-membered heterocyclic compound, and the finished product is obtained after drying and hot pressing.
[0020] The rest of the content is...
Embodiment 3
[0022] A method for preparing natural fiber paper resistant to high temperature and aging, comprising the following contents: preparing a mixed slurry from uncolored softwood pulp and hardwood pulp, concentrating the slurry to a water content of 3-4%, adding an amount equivalent to its weight 5% nucleotide solution with a mass concentration of 2%, stir evenly, soak for 1.5-2 hours at 40-45°C, and then use a refining unit to refine the pulp so that the beating degree is 32°SR; Concentrate the good slurry again to a water content of 0.8-1%, put the slurry in a sealed bag, and balance the moisture for 28 hours at a temperature of 10°C for later use; after dispersing the obtained products, papermaking is carried out in sequence , Rolling and drying. When drying to a moisture content of 30%, the surface is impregnated with a binding liquid containing a six-membered heterocyclic compound, and the finished product is obtained after drying and hot pressing.
[0023] The rest of the co...
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