Some standard content:
Chemical Industry Standard of the People's Republic of China
HG/T2493-93
Chloroprene Rubber Adhesive for Shoes
Published on July 5, 1993
Ministry of Chemical Industry of the People's Republic of China
The standard was approved by the website mmz.b28080com and was implemented on December 1, 1994
Chemical Industry Standard of the People's Republic of China
Chloroprene Rubber Adhesive for Shoes
1 Subject Content and Scope of Application
HG/T2493-93
This standard specifies the classification, typing, use, technical requirements, test methods, acceptance rules and packaging, marking, transportation and storage of nitrile rubber adhesive for shoes.
This standard applies to solvent-based chloroprene rubber adhesives for shoes. This standard does not apply to emulsion-based chloroprene rubber adhesives. 2 Reference standards
GB/T532 Determination of the bond strength between vulcanized rubber and fabrics GB/T2793
Determination method for the non-volatile content of adhesives
GB/T2794 Determination method for viscosity of adhesives (rotational viscometer method) GB2909.1 Technical requirements for cotton canvas for rubber industry GB2941 Rubber test specimens Standard temperature, humidity and time for environmental conditioning and testing GB/T2944 Regulations for packaging, marking, transportation and storage of adhesive products GB/T3723
General safety rules for sampling of industrial chemical products GB8948 Polyvinyl chloride artificial leather
HG/T2198 General requirements for physical test methods of vulcanized rubber 3 Product classification, classification and use
3.1 Product classification and use
The products are divided into two categories: ordinary type and grafted type. Ordinary chloroprene rubber adhesive is mainly used for bonding materials such as vulcanized rubber, leather, and machine cloth. Grafted chloroprene rubber adhesive is mainly used for bonding materials such as polyvinyl chloride artificial leather (PVC), leather, vulcanized rubber and thermoplastic elastomers.
3.2 Product model
3.2.1 Ordinary type is divided into six models according to viscosity: see Table 1Table 1
Viscosity, Pa·S
Graft type is divided into three models according to viscosity: see Table 21993-07-05 approved by the Ministry of Chemical Industry of the People's Republic of ChinaP-5
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1994-12-01Implementation
Viscosity Pa·s
4 Technical requirements
HG/T2493-93
Appearance: uniform, no gel, no mechanical Impurities mixed, 4.1
Technical indicators shall comply with the provisions of Table 3:
Adhesive type
Drum bonding material
Cotton canvas/cotton canvas
Cotton cloth/styrene-butadiene rubber sheet
Initial adhesion, kN/m
Cowhide/styrene-butadiene rubber sheet
PVC/PVC
Cotton canvas/cotton canvas
Cotton cloth/styrene-butadiene rubber sheet
Peel strength, kN/m
Attached heat aging, 50±2℃
Peel strength after 7 days, kN/m
Non-volatile matter content, %
5 Test method
Cowhide/styrene-butadiene rubber sheet
PVC/PVC
Cotton canvas/cotton cloth
Checkered canvas/styrene-butadiene rubber sheet
Cowhide/styrene-butadiene rubber sheet
PVC/PVC
5.1 Adhesive and its surface treatment, see Appendix A15.2 Sample preparation, see Appendix A2.
5.3 Performance determination
5.3.1 Appearance quality shall be inspected by visual inspection,
5.3.2 Initial adhesion
First-class product
Qualified product
After the test pieces are stacked and pressed into test pieces, they must be left alone and immediately fixed according to GB/T532. 5.3.3 Peeling Strength
The sample is parked for 48 hours according to GB2941, and tested according to GB/T5322
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Qualified Products
HG/T2493-93
5.3.4 Heat Aging Resistance
After the sample is parked for 48 hours according to GB2941, it is placed in a 50±2℃ oven for 7 days, and then the sample is placed in an ambient temperature of 23±±2 for 30 minutes, and tested according to GB/T532. 5.3.5 Viscosity
Viscosity is tested according to GB/T2794.
5.3.6 Non-volatile Content
Non-volatile content is tested according to GB/T2793. 6 Inspection rules
6.1 Adhesives manufactured under the same signature are considered a batch. Adhesives are inspected in batches. 6.2 Products shipped out of the factory shall be tested in accordance with this technical condition. Each batch of products shipped out of the factory shall meet the technical requirements specified in this standard and be accompanied by a product quality certificate in a certain format, including: production unit and address, product name, product model, product grade, production batch number, production date, dangerous goods packaging mark, etc.
6.3 Factory inspection
6.3.1 Inspection items: appearance, peel strength (any one of the bonded materials), viscosity, non-volatile content, 6.3.2 Inspection conditions shall comply with the contents of 5.3.1, 5.3.3, and 5.3.5, 6.4 Type inspection
6.4.1 Inspection items are all the contents of 4.1 to 4.2, 6.4.2 Inspection conditions shall comply with all the requirements of Article 5. 6.5 Sampling method
6.5.1 The number of product samples shall be as specified in Table 4Table 4
Number of containers
9—27
65—125
126—216
Minimum number of samples
Number of containers
217-343
344—512
513-729
7301000
Minimum Number of samples
6.5.2 The total amount of samples shall not be less than 1kg, and after uniform mixing, they shall be mixed to form a mixed sample for testing. The mixed sample shall be stored in a sealed container.
6.5.3 Sampling shall be carried out in accordance with the relevant provisions of GB/T3723. 6.6 Inspection results: If one item does not meet the technical indicators of this standard, double samples shall be taken for retesting of the unqualified items. If the corresponding technical indicators are still not met after the retest, the batch of adhesives shall be downgraded or unqualified. 6.7 When the supply and demand parties have objections to the quality of the product, they can be resolved through negotiation or by arbitration. : 7 Marking, packaging, transportation and storage
7.1 Chloroprene rubber adhesives are flammable and dangerous goods. Their marking, packaging, transportation and storage shall be carried out in accordance with GB/T2944. 7.2 Chloroprene rubber adhesives should be stored at room temperature of 10~35C. The storage period is 6 months from the date of production. 3
Standard Search Network.mm.bzsoma.com All American standard industry information is free to download A1 Adhesive and its surface treatment
A1.1 Cotton canvas
HG/T2493-93
Appendix A
(Supplement)
Cotton canvas should comply with 210 (21s5/5) in GB2909.1. A1.2 Cowhide
The specification of cowhide is first-class product. Take its spine. The sample
cowhide must be polished with a grinding wheel until the leather surface is velvety. The polished test piece should be brushed to remove dust thoroughly. A1.3 Styrene-butadiene rubber sheet
. Rubber formula (mass parts)
Styrene butadiene rubber (SBR1502)
Zinc oxideWww.bzxZ.net
Stearic acid
Accelerator M
Accelerator DM
Accelerator TMTD
High wear-resistant carbon black
Motor oil (No. 20)
Vulcanization conditions: 150±1c×8min.
Thickness of styrene butadiene rubber sheet: 2±0.3mm, with cotton canvas lining on the back. d
After the preparation, the styrene-butadiene rubber sheet is placed at room temperature for 24 hours. The styrene-butadiene rubber sheet is polished according to the provisions of HG/T2198. A1.4 Polyethylene artificial leather
Use cloth-based artificial leather, the thickness of the first-class product is (0.9±0.1) mm, and its technical requirements should comply with GB8948, Class 1A. The PVC surface is wiped clean with butanone and dried.
A2 Sample preparation
A2.1 Adhesive preparation
Except for special provisions, triphenylmethane triisocyanate is generally used as a curing agent, the amount is 5% of the adhesive, the content of triphenylmethane triisocyanate is 19%~21%, and the insoluble content (m/m) is not more than 1%. A2.2 Adhesive coating
Apply the prepared and evenly mixed adhesive to the adhered surfaces of the two adhered materials respectively, usually twice for the thicker ones and three times for the cotton canvas. If the absorbent material requires multiple coatings on the bonding surface, the number of times should be indicated in the test report. The adhesive coating plate should be based on the adhesive surface without lack of adhesive or accumulation of adhesive. After coating, place it in a drying oven to dry. The drying temperature is 60±5℃ each time, and the drying time is 5~15min.
A2.3 Overlay and pressurization
Overlay the two bonding surfaces to prevent dislocation and air bubbles. Then roll it longitudinally 3~5 times with your hand, and then apply a uniform pressure of 0.4~.0.6MPa for 15s, and then cut it into a specimen. Standard search network.mm.bzsoma.com Free download of various US standard industry data HG/T2493-93
A2.4 The number of specimens shall be at least 3, and the arbitration test shall be no less than 5. A3 Shape and size of adhesive specimen
The adhesive specimen is a long strip with an effective width of (25±0.2) mm and an effective peeling length of no less than 70 mm. The size and shape of the specimen are shown in Figure A1.
Drum adhesive
Adhesive layer
Additional instructions:
This standard was proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of the National Adhesive Standardization Technical Committee. This standard was drafted by Shanghai Rubber Shoes Research Institute and Sichuan Changshou Chemical General Factory. The main drafters of this standard are He Wenxi, Wang Yuzhu, Ju Yinhan, Liu Yuhua and Chen Xiaoli. After the release and implementation of this standard, the original national standard GB7126-86 "Chloroprene rubber adhesive for shoes" will be abolished. 3
Editor: Chemical Industry Standards Department
(Chemical Industry Standardization Institute)
Postal Code: 100013
Printing: Chemical Industry Standardization Institute
Copyright: Exclusive Reproduction
Format: 880×12301/16Printing Sheet: 716Word Count: 10000First Edition: October 1993
First Printing: October 1993
Print Quantity: 1—500
Standard Exchange Network: am.b2s0o.cnHG/T2493—93
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