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胶粘剂挥发性有机化合物限量
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GB 33372-2020
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标准编号: GB 33372-2020 (GB33372-2020)
中文名称: 胶粘剂挥发性有机化合物限量
英文名称: Limit of volatile organic compounds content in adhesive
行业: 国家标准
中标分类: G39
国际标准分类: 83.180
字数估计: 20,219
发布日期: 2020-03-04
实施日期: 2020-12-01
归口单位: 中华人民共和国工业和信息化部
提出机构: 中华人民共和国工业和信息化部
发布机构: 国家市场监督管理总局、国家标准化管理委员会
GB 33372-2020: 胶粘剂挥发性有机化合物限量
GB 33372-2020 英文名称: Limit of volatile organic compounds content in adhesive
1 范围
本标准规定了在规定条件下的胶粘剂中挥发性有机化合物(以下简称VOC)含量的限定要求、试验方法、检验规则和包装标志。
本标准适用于溶剂型、水基型、本体型胶粘剂中挥发性有机化合物含量的限定。
本标准不适用于:
---用作中间体或未进入流通领域用作生产原料的胶粘剂;
---用于任何研究与开发、质量保证或分析实验室中试验或评估的胶粘剂;
---脲醛、酚醛、三聚氰胺甲醛胶粘剂;
---材料粘接时应用的特殊功能性表面处理剂。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文
件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 2793 胶粘剂不挥发物含量的测定
GB/T 2943 胶粘剂术语
GB/T 6682 分析实验室用水规格和试验方法
GB/T 13354 液态胶粘剂密度的测定方法 重量杯法
GB 19340 鞋和箱包用胶粘剂
GB/T 20740 胶粘剂取样
GB 30982 建筑胶粘剂有害物质限量
GB 37822 挥发性有机物无组织排放控制标准
HG/T 2492-2018 α-氰基丙烯酸乙酯瞬间胶粘剂
3 术语和定义
GB/T 2943和GB 37822界定的以及下列术语和定义适用于本文件。
3.1
挥发性有机化合物含量
VOC含量
规定条件下,测得的单位体积或质量胶粘剂中挥发性有机化合物的质量。
3.2
溶剂型胶粘剂
以挥发性有机溶剂为主体分散介质的胶粘剂。
3.3
水基型胶粘剂
以水为主体分散介质的胶粘剂。
3.4
本体型胶粘剂
分散介质含量占总量的5%以内的胶粘剂。
4 分类
根据胶粘剂产品中不同的分散介质和含量,分为溶剂型、水基型、本体型三大类。
注:通常水基型胶粘剂和本体型胶粘剂为低VOC型胶粘剂。
5 VOC含量限量
5.1 基本要求
5.1.1 胶粘剂产品中苯系(苯、甲苯和二甲苯)、卤代烃(二氯甲烷、1,2-二氯乙烷、1,1,1-三氯乙烷、1,1,2-三氯乙烷)、甲苯二异氰酸酯、游离甲醛等单个挥发性有机化合物含量,应满足 GB 30982或GB 19340中的规定。
5.1.2 胶粘剂产品明示用于多种用途,取各要求中的最低限量。
5.2 溶剂型胶粘剂VOC含量限量
溶剂型胶粘剂VOC含量限量应符合表1的规定。
5.3 水基型胶粘剂VOC含量限量
水基型胶粘剂VOC含量限量应符合表2的规定。
5.4 本体型胶粘剂VOC含量限量
本体型胶粘剂VOC含量限量见表3。
6 试验方法
6.1 取样
胶粘剂产品取样按GB/T 20740的规定进行。
6.2 VOC含量的测定
6.2.1 溶剂型胶粘剂VOC含量的测定按附录A进行。
6.2.2 水基型胶粘剂VOC含量按附录D的规定进行测定。
6.2.3 本体型胶粘剂VOC含量按附录E的规定进行测定。
6.2.4 α-氰基丙烯酸乙酯瞬间胶粘剂VOC含量按HG/T 2492-2018中附录B规定的方法进行测定。
6.2.5 VOC含量也可以根据胶粘剂的成分进行计算,当无法计算或者计算和测量结果不符合时,以测量结果为准。
7 检验规则
7.1 检验项目
7.1.1 本标准所列的全部要求均为型式检验项目。
7.1.2 在正常生产情况下,每年至少进行一次型式检验。
7.1.3 有下列情况之一时,应进行型式检验:
---新产品最初定型时;
---产品异地生产时;
---生产配方、工艺、关键原材料来源有较大改变时;
---停产3个月后又恢复生产时。
7.2 产品抽样
在同一批产品中随机抽取3份样品,每份不少于0.5kg。
7.3 结果判定
在抽取的3份样品中,取1份样品按本标准的规定进行测定。如果所有项目的检验结果符合本标
准规定的要求,则判定为合格。
如果有一项检验结果未达到本标准要求时,应对余下2个样品进行复验。如复验结果合格,则判定
为合格,如仍有1个样品未达到本标准要求时,则判定为不合格。
8 包装标志
按本标准检验合格的胶粘剂产品,应在包装或产品文件上明示产品符合本标准。
GB 33372-2020
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.180
G 39
Replacing GB/T 33372-2016
Limit of volatile organic compounds content in
adhesive
ISSUED ON: MARCH 04, 2020
IMPLEMENTED ON: DECEMBER 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Classification ... 5
5 Limit of VOC content ... 5
6 Test method ... 8
7 Inspection rules ... 8
8 Labels for packages ... 9
Appendix A (Normative) Determination of VOC content in solvent-based
adhesive ... 10
Appendix B (Normative) Determination of water content in adhesive ... 12
Appendix C (Normative) Determination of acetone, methyl acetate and dimethyl
carbonate ... 17
Appendix D (Normative) Determination of VOC content in water-based
adhesive ... 21
Appendix E (Normative) Determination of VOC content in bulk adhesive ... 26
Limit of volatile organic compounds content in
adhesive
1 Scope
This Standard specifies the limit requirements, test methods, inspection rules
and packaging marks of volatile organic compounds (hereinafter referred to as
VOC) content in adhesive under specified conditions.
This Standard applies to the limitation of volatile organic compounds content in
solvent-based, water-based and bulk adhesives.
This Standard does not apply to:
-- adhesives that are used as intermediates or as raw materials for
production without entering the circulation field;
-- adhesives for testing or evaluation in any research and development,
quality assurance or analytical laboratory;
-- urea formaldehyde, phenolic formaldehyde, melamine formaldehyde
adhesives;
-- special functional surface treatment agent that is applied when materials
are bonded.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 2793, The method for determination of nonvolatile content of adhesives
GB/T 2943, Terms of adhesive
GB/T 6682, Water for analytical laboratory use - Specification and test
methods
GB/T 13354, Test method for density of adhesives in fluid form - Method of
weight cup
GB 19340, Adhesives for footwear and case and bag
6 Test method
6.1 Sampling
Adhesive product sampling shall be carried out in accordance with GB/T 20740.
6.2 Determination of VOC content
6.2.1 The determination of VOC content in solvent-based adhesive shall be
performed according to Appendix A.
6.2.2 The VOC content in water-based adhesive shall be determined in
accordance with the provisions of Appendix D.
6.2.3 The VOC content in bulk adhesive shall be determined in accordance with
the provisions of Appendix E.
be determined according to the method that is specified in Appendix B of HG/T
2492-2018.
6.2.5 The VOC content can also be calculated according to the composition of
the adhesive. When the calculation is not possible or the calculation and
measurement results do not match, the measurement result shall prevail.
7 Inspection rules
7.1 Inspection items
7.1.1 All requirements that are listed in this Standard are type inspection items.
7.1.2 Under normal production conditions, type inspection shall be carried out
7.1.3 Type inspection shall be carried out in any of the following cases:
-- when a new product is initially finalized;
-- when the product is produced off-site;
-- when there are major changes in production formulas, processes, and key
raw material sources;
-- when production is resumed after 3 months of suspension.
7.2 Product sampling
Appendix A
(Normative)
A.1 Overview
Place an appropriate amount of the adhesive in a blast drying oven at a
constant temperature; measure the amount of the volatiles in the adhesive
within a prescribed time. Use the gas chromatography to determine the content
of low photochemical reaction compounds; use Karl Fischer method or gas
chromatography to determine the water content in the adhesive; subtract the
water content and the acetone, methyl acetate and dimethyl carbonate amount
from the amount of the volatiles in the adhesive, to obtain the VOC content in
the adhesive.
A.2.1 General
Perform two parallel determinations for all tests.
A.2.2 Density
Prepare the mixed sample according to the matching requirements that are
expressed by the adhesive product; after stirring well, measure the density of
the sample according to the method that is specified in GB/T 13354, at a test
temperature of (23 ± 2) °C.
A.2.3 Volatile content of the sample
A.2.3.1 One-component sample
is specified in GB/T 2793.
A.2.3.2 Multi-component sample
According to the matching requirements that is expressed by the adhesive
product, take about 2 g of the mixed sample; stir it well quickly; then, measure
the non-volatile content of the sample within 5 minutes according to the method
that is specified in GB/T 2793.
A.2.3.3 Volatile content of the sample
Calculate the volatile content of the sample according to Formula (A.1):
B.3.1.4 Dropping bottle: 30 mL.
B.3.1.6 Beaker: 100 mL.
B.3.1.7 Petri dish.
B.3.2 Reagent
B.3.2.1 Distilled water: in accordance with the requirements of grade-3 water in
GB/T 6682.
B.3.2.2 Karl Fischer reagent: use appropriate reagents (for samples that do not
contain aldehyde and ketone compounds, the main components of the reagents
are iodine, sulfur dioxide, methanol, and organic bases. For samples that
contain aldehyde and ketone compounds, use special reagents for aldehyde
methoxyethanol, 2-chloroethanol and trichloromethane.
B.3.3 Test steps
B.3.3.1 Concentration calibration of Karl Fischer titrant
Add fresh Karl Fischer solvent into the titration cup of the titrator until the liquid
surface covers the electrode tip; use Karl Fischer titrant to titrate to the end
point (drift value < 10 μg/min). Use a micro-syringe to inject 10 μL of distilled
water into the titration cup; use the weight reduction method to obtain the mass
of the water (accurate to 0.1 mg); enter the mass into the titrator; use Karl
Fischer titrant to titrate to the end point; record the instrument displayed
Repeat the calibration until the difference between the two adjacent calibration
values is less than 0.01 mg/mL; find the average value of the two calibrations;
enter the calibration results into the titrator.
When the relative humidity of the test environment is less than 70%, it shall be
calibrated once a week; when the relative humidity is greater than 70%, it shall
be calibrated twice a week; if necessary, calibrate at any time.
B.3.3.2 Sample processing
If the viscosity of the to-be-tested sample is large and cannot be dispersed well
in Karl Fischer solvent, perform an appropriate dilution for the sample. In the
20% of distilled water to the beaker; accurately record the sample amount and
water addition. Cover a petri dish on the beaker; stir on a magnetic stirrer for
10 min ~ 15 min. Pour the diluted sample into a dropping bottle for later use.
Appendix C
(Normative)
Determination of acetone, methyl acetate and dimethyl carbonate
C.1 Principle
Directly inject the sample into the gas chromatograph after dilution; use
chromatographic column to separate it; then, use a hydrogen flame ionization
C.2 Materials and reagents
C.2.1 Carrier gas: nitrogen, purity ≥ 99.995%.
C.2.2 Fuel gas: hydrogen, purity ≥ 99.995%.
C.2.3 Combustion-supporting gas: air.
C.2.4 Auxiliary gas (separate purge and makeup gas): nitrogen that has the
same properties as the carrier gas.
C.2.5 Internal standard: a compound that does not exist in the sample; the
compound can be completely separated from other components on the
chromatogram; the purity is at least 99% or known. Such as: n-heptane, n-
C.2.6 Calibration compounds: acetone, methyl acetate, dimethyl carbonate,
whose purity is at least 99% or known.
C.2.7 Dilution solvent: the organic solvent that is used to dilute the sample (it
does not contain any substance that interferes with the test); the purity is at
least 99% or known. Such as: ethyl acetate, n-hexane, etc.
C.3 Instruments and apparatuses
C.3.1 Gas chromatograph, which has the following configuration:
-- inlet of the split device; the lining of the vaporization chamber can be
replaced;
-- detector, flame ionization detector;
f) injection volume: 1.0 μL.
D.5.2 Chromatographic condition 2:
a) chromatographic column (confirmation column): polyethylene glycol
capillary column, 30 m × 0.25 mm × 0.25 μm;
b) temperature of the sample injector: 240 °C;
c) detector: FID, temperature of 250 °C;
d) column temperature: programmed heating; keep the initial temperature of
60 °C for 1 min; then, increase to 240 °C at 20 °C /min; keep it for 20 min;
f) injection volume: 1.0 μL.
D.6 Test steps
D.6.1 General
Perform two parallel determinations for all tests. Multi-component samples are
the same as A.2.3.2.
D.6.2 Density determination
Perform according to the method that is specified in GB/T 13354.
D.6.3 Optimization of chromatographic parameters
According to the gas chromatography conditions, a known calibration
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