CN1884692A - Preparation process for manufacturing insulated paper by para position fiber and meta position fiber - Google Patents
Preparation process for manufacturing insulated paper by para position fiber and meta position fiber Download PDFInfo
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- CN1884692A CN1884692A CN 200610043131 CN200610043131A CN1884692A CN 1884692 A CN1884692 A CN 1884692A CN 200610043131 CN200610043131 CN 200610043131 CN 200610043131 A CN200610043131 A CN 200610043131A CN 1884692 A CN1884692 A CN 1884692A
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Abstract
The invention discloses a manufacturing technology of copy-allocating insulated paper of para and meta aramid fiber, which comprises the following steps: adopting para-aramid chopped fiber and meta aramid pulp fiber to dispense insulated paper according to certain proportion; dispersing the fiber through PEC or congenic adjuvant; improving paper evenness and flexibility; proceeding heat pressing for para aramid fiber to modify physical strength and insulating property.
Description
Technical field
The invention belongs to the crossing domain of synthetic fiber industry and paper industry, particularly a kind of contraposition and meta-aramid fibers are joined the preparation technology who copies insulating paper.
Background technology
Aramid fiber can be divided into two kinds of main types according to the difference of its chemical constitution: a class is to be the meta-aramid of feature with heat resistance, flame retardancy, and China is called aramid fiber 1313; One class is with high strength, high elastic modulus, and heat resistance is the p-aramid fiber of feature, and China is called Fanglun l414.Two kinds of fibers all comprise staple fiber and two kinds of product form of pulp.Aramid fiber insulating paper by pure aramid fiber 1313 staple fiber and pulp fibers production has excellent physical and mechanical properties, heat endurance, anti-flammability, electrical insulating property and radiation resistance, be a kind of special fibre paper of high added value, being widely used in fields such as high-temperature-resistant filtering material, high-temperature protective clothes, electric insulation and cellular structural material, is present high-temperature insulation material with fastest developing speed in the world.But its insulating properties and intensity still can not satisfy the instructions for use of the wideer scope of application of electrical industry and Geng Gao.
The Fanglun l414 fiber is that the high-elastic model of a kind of resistant to elevated temperatures high strength plants fiber.Its heat resistance is not second to the aramid fiber 1313 fiber, and intensity and elastic modelling quantity are more on aramid fiber 1313.Therefore join with the Fanglun l414 fiber and copy the Fanglun l414 insulating paper and have more superiority theoretically than the aramid fiber 1313 insulating paper.The report of paper rarely has report both at home and abroad but the Fanglun l414 fiber is used to manufacture paper with pulp, and therefore exploring and optimizing Fanglun l414 insulating paper papermaking process is a brand-new problem.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, provide a kind of preparation method simple, greatly improve the physical strength of paper and the contraposition and the meta-aramid fibers of insulating properties and join the preparation technology who copies insulating paper.
For achieving the above object, the technical solution used in the present invention is: the p-aramid fiber staple fiber that at first with length is 3～5mm is 1.2 * 10 with concentration down at 60 ℃
-3Neopelex washing 10～30min of mol/L is clean with flushing with clean water at last; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 1000～3000 to change, and the making beating gap is 0.1～0.4mm, and beating consistency is 6%～10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 1000～5000 to change, and the making beating gap is 0.1～0.4mm, and beating consistency is 5%～12%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.4～1: 1 mass ratio, and the polyethylene glycol oxide dispersant of the quality 0.1%～0.3% of adding mixture, regulate the mass concentration 0.02%～0.08% of slurry, adopt the laminated mode of manufacturing paper with pulp of layering to manufacture paper with pulp into paper; At last, the gained paper hot pressing on the roll-type hot press of will manufacturing paper with pulp gets final product for 2～4 times, and said hot pressing temperature is that 200～260 ℃, pressure are 140～190bar, and roller speed is 1～3m/min.
The present invention adopts p-aramid fiber staple fiber and two kinds of fibrous raw materials of meta-aramid pulp fibers to join and copies the aramid fiber insulating paper, because the p-aramid fiber staple fiber belongs to synthetic fiber, hydrophobicity is strong, and very easily wadding is poly-in water, so formation of sheet is very poor; And para-aramid fiber modulus height, fiber is stiff, and fiber combining power is poor, causes body paper intensity extreme difference.The present invention has at first carried out preliminary treatment to the p-aramid fiber staple fiber, adopts then para-aramid fiber is disperseed effectively dispersant---and PEO or come loosen collagen fibre with analog assistant, improved the evenness of paper greatly; And adopt special methods of beating that the p-aramid fiber staple fiber has been carried out suitable making beating and handle the flexibility that improves fiber, adhesion between fortifying fibre; Adopted the laminated technology of manufacturing paper with pulp in the process of manufacturing paper with pulp, last, the p-aramid fiber body paper of manufacturing paper with pulp out has been carried out hot-pressing processing under certain process conditions, greatly improved the physical strength and the insulating properties of paper.
The specific embodiment
Embodiment 1, at first is that the p-aramid fiber staple fiber of 3mm is 1.2 * 10 with concentration down at 60 ℃ with length
-3Clean behind the neopelex washing 10min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 1000 to change, and the making beating gap is 0.3mm, and beating consistency is 10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 3000 to change, and the making beating gap is 0.3mm, and beating consistency is 8%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.4 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.2% of mixture, the mass concentration 0.02% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 250 ℃, pressure are 160bar in temperature, and roller speed is that hot pressing gets final product for 3 times under the 1m/min.
Embodiment 2, at first are that the p-aramid fiber staple fiber of 4mm is 1.2 * 10 with concentration down at 60 ℃ with length
-3Clean behind the neopelex washing 20min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 2000 to change, and the making beating gap is 0.1mm, and beating consistency is 8%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 5000 to change, and the making beating gap is 0.1mm, and beating consistency is 12%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.8 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.3% of mixture, the mass concentration 0.06% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 230 ℃, pressure are 180bar in temperature, and roller speed is that hot pressing gets final product for 4 times under the 3m/min.
Embodiment 3, at first are that the p-aramid fiber staple fiber of 5mm is 1.2 * 10 with concentration down at 60 ℃ with length
-3Clean behind the neopelex washing 15min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 1500 to change, and the making beating gap is 0.2mm, and beating consistency is 6%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 1000 to change, and the making beating gap is 0.2mm, and beating consistency is 5%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.6 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.1% of mixture, the mass concentration 0.04% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 200 ℃, pressure are 140bar in temperature, and roller speed is that hot pressing gets final product for 2 times under the 2m/min.
Embodiment 4, at first are that the p-aramid fiber staple fiber of 5mm is 1.2 * 10 with concentration down at 60 ℃ with length
-3Clean behind the neopelex washing 25min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 3000 to change, and the making beating gap is 0.4mm, and beating consistency is 9%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 4000 to change, and the making beating gap is 0.4mm, and beating consistency is 10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 1 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.2% of mixture, the mass concentration 0.08% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 240 ℃, pressure are 190bar in temperature, and roller speed is that hot pressing gets final product for 2 times under the 1.5m/min.
Embodiment 5, at first are that the p-aramid fiber staple fiber of 4mm is 1.2 * 10 with concentration down at 60 ℃ with length
-3Clean behind the neopelex washing 30min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 2500 to change, and the making beating gap is 0.3mm, and beating consistency is 7%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 2000 to change, and the making beating gap is 0.3mm, and beating consistency is 7%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.7 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.1% of mixture, the mass concentration 0.03% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 260 ℃, pressure are 150bar in temperature, and roller speed is that hot pressing gets final product for 4 times under the 2.5m/min.
Embodiment 6, at first are that the p-aramid fiber staple fiber of 3mm is 1.2 * 10 with concentration down at 60 ℃ with length
-3Clean behind the neopelex washing 23min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 2800 to change, and the making beating gap is 0.1mm, and beating consistency is 10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 1800 to change, and the making beating gap is 0.1mm, and beating consistency is 9%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.5 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.3% of mixture, the mass concentration 0.05% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 210 ℃, pressure are 170bar in temperature, and roller speed is that hot pressing gets final product for 3 times under the 3m/min.
Adopt its physical property testing result of insulating paper that preparation method of the present invention makes to show, physical strength, especially insulating properties have had than the meta-aramid insulating paper and have increased substantially.Wherein, tensile index has improved 22.93% than meta-aramid insulating paper, and tear index has improved 17.20%, and insulating properties have improved 56.70%.Find that simultaneously the p-aramid fiber insulating paper has good DIMENSIONAL STABILITY, elongation at break has only 20.58% of meta-aramid insulating paper.
Claims (7)
1, contraposition and meta-aramid fibers are joined the preparation technology who copies insulating paper, it is characterized in that:
1) at first be that the p-aramid fiber staple fiber of 3～5mm is 1.2 * 10 with concentration down at 60 ℃ with length
-3Neopelex washing 10～30min of mol/L is clean with flushing with clean water at last;
2) processings of secondly the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 1000～3000 to change, and the making beating gap is 0.1～0.4mm, and beating consistency is 6%～10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics;
3) processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 1000～5000 to change, and the making beating gap is 0.1～0.4mm, and beating consistency is 5%～12%, and is forced into 2.5kgf gradually in 1000 commentaries on classics;
4) meta-aramid slurry after will pulling an oar and p-aramid fiber slurry mix by 1: 0.4～1: 1 mass ratio, and the polyethylene glycol oxide dispersant of the quality 0.1%～0.3% of adding mixture, regulate the mass concentration 0.02%～0.08% of slurry, adopt the laminated mode of manufacturing paper with pulp of layering to manufacture paper with pulp into paper;
5) last, the gained paper hot pressing on the roll-type hot press of will manufacturing paper with pulp gets final product for 2～4 times, and said hot pressing temperature is that 200～260 ℃, pressure are 140～190bar, and roller speed is 1～3m/min.
2, contraposition according to claim 1 and meta-aramid fibers are joined the preparation technology who copies insulating paper, it is characterized in that: the p-aramid fiber staple fiber that at first with length is 3mm is 1.2 * 10 with concentration down at 60 ℃
-3Clean behind the neopelex washing 10min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 1000 to change, and the making beating gap is 0.3mm, and beating consistency is 10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 3000 to change, and the making beating gap is 0.3mm, and beating consistency is 8%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.4 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.2% of mixture, the mass concentration 0.02% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 250 ℃, pressure are 160bar in temperature, and roller speed is that hot pressing gets final product for 3 times under the 1m/min.
3, contraposition according to claim 1 and meta-aramid fibers are joined the preparation technology who copies insulating paper, it is characterized in that: the p-aramid fiber staple fiber that at first with length is 4mm is 1.2 * 10 with concentration down at 60 ℃
-3Clean behind the neopelex washing 20min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 2000 to change, and the making beating gap is 0.1mm, and beating consistency is 8%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 5000 to change, and the making beating gap is 0.1mm, and beating consistency is 12%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.8 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.3% of mixture, the mass concentration 0.06% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 230 ℃, pressure are 180bar in temperature, and roller speed is that hot pressing gets final product for 4 times under the 3m/min.
4, contraposition according to claim 1 and meta-aramid fibers are joined the preparation technology who copies insulating paper, it is characterized in that: the p-aramid fiber staple fiber that at first with length is 5mm is 1.2 * 10 with concentration down at 60 ℃
-3Clean behind the neopelex washing 15min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 1500 to change, and the making beating gap is 0.2mm, and beating consistency is 6%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 1000 to change, and the making beating gap is 0.2mm, and beating consistency is 5%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.6 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.1% of mixture, the mass concentration 0.04% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 200 ℃, pressure are 140bar in temperature, and roller speed is that hot pressing gets final product for 2 times under the 2m/min.
5, contraposition according to claim 1 and meta-aramid fibers are joined the preparation technology who copies insulating paper, it is characterized in that: the p-aramid fiber staple fiber that at first with length is 5mm is 1.2 * 10 with concentration down at 60 ℃
-3Clean behind the neopelex washing 25min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 3000 to change, and the making beating gap is 0.4mm, and beating consistency is 9%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 4000 to change, and the making beating gap is 0.4mm, and beating consistency is 10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 1 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.2% of mixture, the mass concentration 0.08% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 240 ℃, pressure are 190bar in temperature, and roller speed is that hot pressing gets final product for 2 times under the 1.5m/min.
6, contraposition according to claim 1 and meta-aramid fibers are joined the preparation technology who copies insulating paper, it is characterized in that: the p-aramid fiber staple fiber that at first with length is 4mm is 1.2 * 10 with concentration down at 60 ℃
-3Clean behind the neopelex washing 30min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 2500 to change, and the making beating gap is 0.3mm, and beating consistency is 7%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 2000 to change, and the making beating gap is 0.3mm, and beating consistency is 7%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.7 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.1% of mixture, the mass concentration 0.03% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 260 ℃, pressure are 150bar in temperature, and roller speed is that hot pressing gets final product for 4 times under the 2.5m/min.
7, contraposition according to claim 1 and meta-aramid fibers are joined the preparation technology who copies insulating paper, it is characterized in that: the p-aramid fiber staple fiber that at first with length is 3mm is 1.2 * 10 with concentration down at 60 ℃
-3Clean behind the neopelex washing 23min of mol/L with flushing with clean water; Secondly processings of the p-aramid fiber staple fiber of rinsing well being pulled an oar in the PFI mill, making beating revolution are 2800 to change, and the making beating gap is 0.1mm, and beating consistency is 10%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Processings of then meta-aramid fibre fibrid being pulled an oar in PFI mill, making beating revolution are 1800 to change, and the making beating gap is 0.1mm, and beating consistency is 9%, and is forced into 2.5kgf gradually in 1000 commentaries on classics; Meta-aramid slurry after the making beating and p-aramid fiber slurry are mixed by 1: 0.5 mass ratio, and add the polyethylene glycol oxide dispersant of the quality 0.3% of mixture, the mass concentration 0.05% of regulating slurry, adopt layering laminated manufacture paper with pulp into paper; The gained paper of will manufacturing paper with pulp is that 210 ℃, pressure are 170bar in temperature, and roller speed is that hot pressing gets final product for 3 times under the 3m/min.
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| CN107326723A (en) * | 2017-06-22 | 2017-11-07 | 陕西科技大学 | A kind of aromatic polyamide paper and preparation method thereof |
| CN107326723B (en) * | 2017-06-22 | 2019-07-09 | 陕西科技大学 | A kind of aromatic polyamide paper and preparation method thereof |
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| CN114837012A (en) * | 2022-05-07 | 2022-08-02 | 山东聚芳新材料股份有限公司 | Method for recycling damaged para-aramid paper |
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