Processing technology for reducing paper pulp fiber loss rate in papermaking technology
A technology of pulp fiber and processing technology, applied in the field of processing technology to reduce the loss rate of pulp fiber in the papermaking process, can solve the problems of reducing the smoothness of paper, increasing the surface roughness of pulp fiber, and reducing the smoothness and flexibility of paper, so as to avoid dispersion Unevenness, reduced fiber loss rate, and excellent physical and chemical properties
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Embodiment 1
[0016] A processing technology for reducing the loss rate of pulp fibers in the papermaking process, the specific processing technology is as follows:
[0017] 1) Filter the pulp fibers to remove moisture, place them in a blast drying oven, and dry the pulp fibers thoroughly at 100°C, then place the dried pulp fibers in a storage-type liquid nitrogen container for 1 hour, After the treated pulp fibers are taken out, they are balanced for 30 hours at a room temperature with a relative humidity of 60% to obtain pretreated pulp fibers;
[0018] 2) Add 10 parts of silane coupling agent and 3 parts of ethylenediamine to 200 parts of methanol solution, react at 80°C for 25 hours under nitrogen atmosphere, and concentrate the obtained solution to 1 / 3 of the original volume after filtration Standby, according to the mass volume ratio of 1:10g / ml, disperse the dendritic porous silica nanoparticles into the toluene solution, then add the spare concentrated solution, and react at 105°C f...
Embodiment 2
[0024] A processing technology for reducing the loss rate of pulp fibers in the papermaking process, the specific processing technology is as follows:
[0025] 1) Filter the pulp fibers to remove moisture, place them in a blast drying oven, and dry the pulp fibers thoroughly at 105°C, then place the dried pulp fibers in a storage-type liquid nitrogen container for 2 hours, After the treated pulp fibers are taken out, they are balanced for 25 hours at a room temperature with a relative humidity of 65% to obtain pretreated pulp fibers;
[0026] 2) Add 13 parts of silane coupling agent and 5 parts of ethylenediamine to 250 parts of methanol solution, react at 85°C for 23 hours under nitrogen atmosphere, and concentrate the obtained solution to 1 / 3 of the original volume after filtration Standby, according to the mass volume ratio of 1:12g / ml, disperse the dendritic porous silica nanoparticles into the toluene solution, then add the spare concentrated solution, react at 110°C for ...
Embodiment 3
[0032] A processing technology for reducing the loss rate of pulp fibers in the papermaking process, the specific processing technology is as follows:
[0033] 1) Filter the pulp fibers to remove moisture, place them in a blast drying oven, and dry the pulp fibers thoroughly at 110°C, then place the dried pulp fibers in a storage-type liquid nitrogen container for 3 hours, After the treated pulp fibers are taken out, they are equilibrated for 20 hours at a room temperature with a relative humidity of 70% to obtain pretreated pulp fibers;
[0034] 2) Add 15 parts of silane coupling agent and 7 parts of ethylenediamine to 300 parts of methanol solution, react at 90°C for 20 hours under nitrogen atmosphere, and concentrate the obtained solution to 1 / 2 of the original volume after filtration Standby, according to the mass volume ratio of 1:15g / ml, disperse the dendritic porous silica nanoparticles into the toluene solution, then add the spare concentrated solution, and react at 11...
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