Method for modifying aspen fibers by using silicon-boron sol
A technology of poplar fiber and wood fiber, which is applied in the field of silicon-borosol modified poplar fiber, can solve the problems of poor dimensional stability, flammability, and easy decay, achieves improved dimensional stability and flame retardant performance, and solves the problems of dimensional stability and flame retardancy. The effect of poor stability
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Embodiment 1
[0013] 1. Preparation of poplar wood fiber: After peeling and slicing the raw material poplar wood, it is preheated and cooked, sent to a heat grinder for processing into fibers, and then dried to a moisture content of 2 to 3%.
[0014] 2. Preparation of silicon-boron sol: ethyl orthosilicate (TEOS), absolute ethanol (EtOH), water (H 2 O), boric acid is added in the Erlenmeyer flask according to the mol ratio of 1: 10: 10: 0.46, with 0.1mol.L -1 Hydrochloric acid is used as a catalyst, and the pH value is adjusted to 5. At room temperature, vigorously stir for 1 hour to obtain a transparent sol, which is used for the treatment of wood fibers;
[0015] 3. Poplar fiber modification: poplar fiber was extracted with acetone and tap water for 24 hours in a Soxhlet extractor, and dried at 80°C until constant weight. Then put the treated poplar fiber into the self-made treatment tank to vacuumize and keep a vacuum of 0.097MPa. After 25 minutes, add silicon-boron sol (per 100g poplar...
Embodiment 2
[0019] 1. Preparation of poplar wood fiber: After peeling and slicing the raw material poplar wood, it is preheated and cooked, sent to a heat grinder for processing into fibers, and then dried to a moisture content of 2 to 3%.
[0020] 2. Preparation of silicon-boron sol: ethyl orthosilicate (TEOS), absolute ethanol (EtOH), water (H 2 O), boric acid is added in the Erlenmeyer flask according to the mol ratio of 1: 10: 30: 0.39, with 0.1mol.L -1 Hydrochloric acid is used as a catalyst, and the pH value is adjusted to 6. At room temperature, vigorously stirred for 1 hour to obtain a transparent sol, which is used for the treatment of wood fibers;
[0021] 3. Poplar fiber modification: Poplar fiber was extracted with acetone and tap water for 26 hours in a Soxhlet extractor, and dried at 80°C to constant weight. Then put the treated poplar fiber into the self-made treatment tank to vacuumize and keep a vacuum of 0.097MPa. After 30 minutes, add silicon-boron sol (per 100g poplar...
Embodiment 3
[0025] 1. Preparation of poplar wood fiber: After peeling and slicing the raw material poplar wood, it is preheated and cooked, sent to a heat grinder for processing into fibers, and then dried to a moisture content of 2 to 3%.
[0026] 2. Preparation of silicon-boron sol: ethyl orthosilicate (TEOS), absolute ethanol (EtOH), water (H 2 O), boric acid is added in the Erlenmeyer flask according to the mol ratio of 1:10:15:0.33, with 0.1mol.L -1 Hydrochloric acid is used as a catalyst, and the pH value is adjusted to 6. At room temperature, vigorously stirred for 1 hour to obtain a transparent sol, which is used for the treatment of wood fibers;
[0027] 3. Poplar fiber modification: Poplar fiber was extracted with acetone and tap water for 20 hours in a Soxhlet extractor, and dried at 80°C to constant weight. Then put the treated poplar fiber into the self-made treatment tank to vacuumize and keep a vacuum of 0.097MPa. After 20 minutes, add silicon-boron sol (per 100g poplar fi...
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Abstract
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