Method for preparing ramie fibers through oxidation, degumming and repeated multiple-step feeding
A ramie fiber, oxidative degumming technology, applied in the direction of chemical production of bast fibers, etc., can solve the problems of reduced degumming effect and bleaching effect, uneven degumming of ramie fiber, excessive local decomposition, etc., to reduce ineffective decomposition and defoamer. The dosage, excellent mechanical properties, and the effect of reducing fiber damage
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0034] The method for preparing ramie fiber by oxidative degumming multiple step-by-step feeding comprises the following 4 steps:
[0035] Step 1: First feeding
[0036] 0.4 kg of sodium percarbonate, 0.4 kg of polyethylene glycol, 0.2 kg of urea, 0.3 kg of polyacrylamide, 0.05 kg of defoamer, 0.1 kg of caustic soda, add 98.45 kg of water to make a degumming solution, and immerse 10 kg of ramie raw materials in the degumming solution , forming a degumming liquid system. From room temperature to 70°C, keep warm at this temperature.
[0037] Step 2: Second feeding
[0038] After 30 minutes, add 0.4 kg of sodium percarbonate and 0.1 kg of caustic soda to the degumming solution system, raise the temperature to 85°C, and keep it warm at this temperature to continue to remove the gum.
[0039] Step 3: The third feeding
[0040] After 40 minutes, add 0.4 kg of sodium percarbonate to the degumming liquid system, and keep warm at 85°C for 40 minutes until the reaction ends and the ...
Embodiment 2
[0045] The method for preparing ramie fiber by oxidative degumming multiple step-by-step feeding comprises the following 4 steps:
[0046] Step 1: First feeding
[0047] 0.4 kg of hydrogen peroxide, 0.3 kg of sodium tripolyphosphate, 0.3 kg of ethylenediamine, 0.2 kg of sodium gluconate, 0.1 kg of hydroxymethyl cellulose, 0.05 kg of defoamer, 0.15 kg of caustic soda, add 98.5 kg of water to make degumming Liquid, 10 kilograms of ramie raw materials are immersed in the degumming liquid to form a degumming liquid system. From room temperature to 80°C, keep warm at this temperature.
[0048] Step 2: Second feeding
[0049] After 20 minutes, add 0.3 kg of hydrogen peroxide and 0.1 kg of caustic soda to the degumming liquid system, raise the temperature to 90°C, and keep it warm at this temperature to continue to remove the gum.
[0050] Step 3: The third feeding
[0051] After 50 minutes, add 0.3 kg of hydrogen peroxide to the degumming solution system, and keep warm at 90°C f...
Embodiment 3
[0054] The method for preparing ramie fiber by oxidative degumming multiple step-by-step feeding comprises the following 4 steps:
[0055] Step 1: First feeding
[0056] 0.4 kg of benzoyl peroxide, 0.3 kg of polysorbate, 0.2 kg of liquid ammonia, 0.2 kg of diethylamine pentaacetic acid, 0.15 kg of hydroxymethyl cellulose, 0.05 kg of defoamer, 0.2 kg of caustic soda, and 98.5 kg of water To form a degumming solution, 10 kilograms of ramie raw materials are immersed in the degumming solution to form a degumming solution system. From room temperature to 90°C, keep warm at this temperature.
[0057] Step 2: Second feeding
[0058] After 50 minutes, add 0.3 kg of benzoyl peroxide and 0.1 kg of caustic soda to the degumming solution system, raise the temperature to 100°C, and keep it warm at this temperature to continue to remove the gum.
[0059] Step 3: The third feeding
[0060] After 50 minutes, add 0.2 kg of benzoyl peroxide to the degumming solution system, and keep warm for...
PUM
Property | Measurement | Unit |
---|---|---|
strength | aaaaa | aaaaa |
strength | aaaaa | aaaaa |
strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com