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GB/T 24994-2010: Measurement of colloidal charge at paper machine wet end
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24994-2010 | English | 189 |
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Measurement of colloidal charge at paper machine wet end
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GB/T 24994-2010
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Basic data | Standard ID | GB/T 24994-2010 (GB/T24994-2010) | | Description (Translated English) | Measurement of colloidal charge at paper machine wet end | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y30 | | Classification of International Standard | 85-010 | | Word Count Estimation | 8,812 | | Date of Issue | 2010-08-09 | | Date of Implementation | 2010-12-01 | | Quoted Standard | GB/T 7977 | | Regulation (derived from) | National Standard Approval Announcement 2010 No.3 (Total No.158) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method of dissolving the wet end of the papermaking charge amount was determined by flow potential. This standard applies to paper measuring the amount of charge in an aqueous solution of colloidal substances dissolved. | GB/T 24994-2010: Measurement of colloidal charge at paper machine wet end---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Measurement of colloidal charge at paper machine wet end
ICS 85-010
Y30
National Standards of People's Republic of China
Determination of the amount of charge Wet End dissolved
Issued on. 2010-08-09
2010-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
Appendix A of this standard is a normative appendix.
The standard proposed by China National Light Industry Council.
The standard paper by the National Standardization Technical Committee (SAC/TC141) centralized.
This standard was drafted. China Banknote Printing and Minting Corporation of Chengdu Banknote Printing Company, China Pulp and Paper Research Institute, the national paper quality supervision and inspection
Test center.
The main drafters of this standard. Lin Li, Yuebao Min, Deng Zhi-ming, Su Xinyu, who, education.
Determination of the amount of charge Wet End dissolved
1 Scope
This standard specifies the method for wet end dissolving the charge amount was determined by flow potential.
This standard applies to the paper in an aqueous solution of colloidal substances measured charge amount is dissolved.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 7977 paper, board and pulp - Determination of conductivity of aqueous extracts
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Dissolving the charge dissolvedcharge
Papermaking systems dissolved polyelectrolyte charged group containing cationic and anionic functional groups, such as lignin, hemicellulose, dispersion
Agent, size press sizing, starch, dry strength agents, wet strength agent and retention aid.
3.2
Streaming potential streamingpotential
Stream of charged particles in the opposite ion shear measured by the potential of being separated or, expressed in mV. Particles with a positive symbol indicates potential
Charge (positively charged) or negatively charged (negatively charged).
Point of zero charge indicate all charges present in the sample is neutralized.
3.3
The total charge totalcharge
Plasmacytoid ingredients dissolved and suspended materials (such as polymeric electrolytes, fibers, fines, fillers, interference, etc.) the sum of the charges.
3.4
Anionic and cationic demand requirements cationicdemandandanionicdemand
When the substance and cationic or anionic charge, standard titration solution requirements.
3.5
Electrochemical equivalent molecularweightofelectrochemistry
When the number of moles of 1mol substance involved in the electrolysis electrode reaction electrons, represented by eq.
Principle 4
Charged colloidal substances, polymers and suspended particles in an aqueous solution to a solid surface adsorption surface charge and electric double layer can be formed, when the adsorption
When the piston and cylinder wall and move with the piston surface charge their electric double layer CKS anion separation relative flow generated, thereby forming a stream
Driving current, and into the flow potential of the signal is displayed.
Use an oppositely charged polymer electrolyte as droplets given titration samples continue to be a solid surface charge neutralization, adsorption piston
Surface and interfacial charge polymer colloidal particles formed by diminishing the flow of current and streaming potential decreases, when the particles are electrically and colloids
When the charge is completely neutralized, streaming potential to zero. Dissolving the charge can be calculated according to the amount of titrant consumption.
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