Defibrating Machine Using Pooxyalkylene Compound to Break Hydrogen Bonds
Solution Overview
Problem
Dry type fiber body forming apparatuses require high energy to break hydrogen bonds between fibers, leading to inefficiencies and increased size, as they rely on mechanical defibration without effective energy reduction methods.
Innovation Solution
A defibrating method involving the use of a compound represented by the formula RO(EO)m(PO)nH, where R is an alkyl or alkenyl group with 6 to 22 carbon atoms, and m and n represent the average number of added moles, is added to the fiber material, allowing for low-energy defibration by disrupting hydrogen bonds and maintaining paper strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical defibration is used to break hydrogen bonds between fibers, then fibers can be separated, but large energy is required
Solution Approach 1:
A polyoxyalkylene compound is introduced as an intermediary substance between fibers during defibration. This compound disrupts hydrogen bonds between fibers, enabling separation with reduced mechanical energy input. The compound acts as a mediator that weakens the bonding forces, allowing the defibrating mechanism to separate fibers more efficiently with lower energy consumption.
Solution Approach 2:
The invention changes the chemical parameters of the defibration process by adding a polyoxyalkylene compound with specific molecular structure (formula RO(EO)m(PO)nH). This chemical modification alters the hydrogen bonding characteristics between fibers, reducing the energy required for mechanical separation. The parameter change involves both the chemical composition and the molecular weight range of the added compound.
2Loss of energy
If water is reduced in dry type fiber body forming apparatus, then energy saving is achieved, but high energy is still required for defibration
Solution Approach 1:
The polyoxyalkylene compound serves as a chemical intermediary that enables effective defibration without water. By disrupting hydrogen bonds through this intermediary substance, the system achieves both dry processing and reduced energy consumption, resolving the contradiction between water reduction and energy efficiency.
Solution Approach 2:
The invention partially replaces the purely mechanical defibration system with a chemically-assisted system. The polyoxyalkylene compound performs part of the separation work through chemical action (disrupting hydrogen bonds), reducing the burden on the mechanical defibrating mechanism and thereby lowering overall energy requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method enables energy-saving defibration of fibers at low energy costs while maintaining paper strength and preventing the formation of oily paper, allowing for efficient fiber body formation with enhanced operational efficiency.
Implementation Method 1
allowing for low-energy defibration by disrupting hydrogen bonds
Data Source
AI summary
A defibrating method includes the steps of: preparing a material which contains fibers and a compound represented by the following formula (1); and defibrating the material.RO(0)m(PO)nH (1)In the formula, R represents an alkyl or an alkenyl group having 6 to 22 carbon atoms or an alkylaryl group including an alkyl group which has 4 to 20 carbon atoms, E represents an ethylene group, P represents a propylene group, m and n each represent an average number of added moles, m represents a numerical value of 0 to 20, n represents a numerical value of 1 to 10, and (EO)m(PO)n represents a block addition structure.