Method for preparing high-temperature-aging-resistant natural fiber paper
A natural fiber and high temperature resistant technology, applied in the direction of natural cellulose pulp/paper, cellulose pulp post-treatment, fiber raw material treatment, etc., can solve problems such as difficult to meet market demand, decrease in mechanical strength, etc., to increase physical entanglement point , Improve mechanical strength, promote the effect of chemical bonding
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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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