HG/T 2492-1993 α-Ethyl Cyanoacrylate Instant Adhesive HG/T2492-1993 Standard download decompression password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG/T 2492. - 93
α-Ethyl cyanoacrylate instant adhesive 9 Li 317-05 issued
Ministry of Chemical Industry of the People's Republic of China
Implementation on December 1, 1994
Chemical Industry Standard of the People's Republic of China
Ethyl cyanoacrylate instant adhesive
Subject content and applicable scope
HG/T: 2492 -
This standard specifies the technical requirements for ethyl cyanoacrylate instant adhesive (502. glue). Test methods, inspection rules, packaging, marking, transportation and storagebzxz.net
This standard applies to general-purpose type I ethyl cyanoacrylate instantaneous curing adhesives. Reference standards
GB./T2794 Method for determining viscosity of adhesives (rotational viscosity method) GB/T:2944 Provisions for packaging, marking, transportation and storage of adhesive products: GB/.T6680 General rules for sampling of liquid chemical products GB/T 7124
Method for determining tensile shear strength of adhesives (metal to metal) 3 Technical requirements
The technical requirements of this product [general type 1] shall comply with the provisions of Table 1, Table 1
Appearance:
Curing time,
Adhesive spots. mPa-s (25℃)
Tensile shear strength, MPa
Storage stability:
Appearance:
Weakness time, s
Viscosity, mPas(25℃)
Tensile shear strength, MPa
Test method
Measure 5mL of sample into a 10mL colorimetric tube. Measure under diffuse light. Approved by the Ministry of Chemical Industry of the People's Republic of China on July 5, 1993
Colorless and transparent liquid
Colorless and transparent liquid
1994-1201 Implementation
4.2 Viscosity
HG / T 2492
Take 20mL of the sample and keep it at a constant temperature of 25℃ for 1h, inject it into the test bottle, keep it at a temperature of 25±1 for 1m, and measure it according to the provisions of GB/T2794.
4.3 Curing time
4.3.1 Surface treatment of test pieces
Use a 200-240 mesh oilstone to grind the bonding surface of the metal test piece that meets the requirements of GB/T7124. (Use water as a lubricant for the oilstone, do not use oil. You can also use a grinder equipped with a 200-240 self-abrasive belt for grinding. The grinding area should be no less than 12.5mm×25mm. Clean the grinding area with a water solution of washing powder or other detergents, then clean it with water, and then clean it with acetone, and put it in a silica gel dryer for use within one week. 4.3.2 Preparation of spot samples
Select a diameter of about 2 mm 4.3.3 Determination steps
Under the test conditions of temperature of 232°C and relative coagulation of 60%±10%, lay a test piece flat, insert the sample spotting stick into the sample liquid surface for about 10 mm, take it out, and drop a drop of sample (0.02～0.03 mL), immediately press it with the bonding part of another test piece, start timing at the same time, hold the bonding part of the test piece with the thumb and index finger, and fix one end of the test piece to a rack through the pin hole, then hang a 5kg weight on the lower end of the test piece, and measure the shortest time that the bonding part of the test piece is not damaged after adding the weight.
4.4 Tensile shear strength
4.4.1 Preparation of sampling tube
Choose a 0.1mL pipette, add a rubber hose with one end sealed at the suction port, and fix the rubber hose when the sampling volume is 0.05mL by adjusting the exhaust volume.
4.4.2 Sample preparation
Put the test piece treated according to the requirements of 4.3. 1 flat, and use the sampling tube to drop about 0.05 mL sample, immediately attach another test piece and fix it with a clamp. Place it for 24 hours under the test conditions of temperature 23±2℃ and relative humidity 60%±10%. 4. 4.3. Test steps
Measure according to the provisions of GB·7124
Test results: The number of measurements shall not be less than five times, and then the data shall be selected and discarded using the Grubbs method at a confidence level of 95%, and then the arithmetic mean shall be taken.
4.5·Bar storage stability test
Take a 40g sample with packaging, place it in an air circulation thermostatic box, keep it warm at 70±2℃ for 120 hours, then take it out, wait until the sample temperature drops to room temperature, and then test the appearance, viscosity, curing time, tensile shear strength according to the provisions of 4.1~4.4 series, 5 Inspection rules
5.1 Factory inspection
Factory inspection items are all items listed in Table 1. 5.2 Product sampling
: According to the provisions of GB/T6680
5.3 If one of the product test results is unqualified, double samples should be prepared to retest the unqualified items. If there is still one unqualified result, the batch of products is unqualified.
6 Packaging, marking, transportation and storage
6.1 Packaging: marking: transportation
, according to the provisions of GB/T2944.
EG/T 2492-93
This product should be stored in a cool, ventilated and dry environment. The storage period under the above conditions is meters from the date of production. Additional remarks:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China and was approved by the National Technical Committee for Standardization of Adhesives. This standard was drafted by Beijing Chemical Plant, and the main drafters of this standard were Sun Yanlong, Shao Huiwang, Li Li, and Ye Huali. People's Republic of China
Chemical Industry Standard
α-Ethyl Acrylate Instant Adhesive
HG/T 2492-93
Editorial Industry Standard Promotion and Compilation Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Instant Printing Standardization Research Institute of Ministry of Chemical Industry
Copyright Exclusive Reprinting
Format 80×12301/16 Printing Sheet 6 Words 6000 First Printing in October 1993
October 1993 First Edition
Printing Number 1-509
Cost 1.20 Yuan
HG/T2492-93
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