In the adhesive industry, foreign adhesives have a wide range of applications, many varieties of products, and a large number of serialized products, and are growing. The adhesive production in China has ranked third in the world in 1999, but the output value only accounts for 7% of the world's adhesives. Moreover, the high-performance, high-value-added products are not only low in quality, but also of low quality and single species, lagging far behind developed countries. . Due to the vast market for adhesives in China, some foreign adhesive production companies have also shifted to the domestic market.
First, the status quo of domestic quality inspection of adhesive products and existing problems
1. Many small and medium enterprises in the adhesive industry, quality inspection equipment is relatively backward. A considerable part of the company's instruments that measure quality indicators are still using the mechanical dynamometers of the sixties and seventies to measure the peeling strength. The sticky and sticky testers used to measure the basic indicators of adhesives are products that are manufactured by the company. There are also some companies without equipment, which is entirely judged by their hand.
2. The adhesive industry standards vary. Due to the fact that the company's conditions vary widely, the equipment provided varies from actual implementation to actual implementation. Some of them are only sticky and sticky indicators, and some have peel strength indicators. Some companies have unclear test targets for certain types of adhesives, such as structural adhesives, etc. Larger products only need to pull the shear strength, there is no need to measure the initial viscosity, sticking index.
3. Some companies have a vague concept of the national standard, and the tests are done in kind. The user glues the wood to the wood and the user sticks the glass to the glass. This is totally incomparable. It is inconvenient to communicate with each other within the industry. Actually, all the internationally specified indicators are made on the standard test board.
4. The utilization rate of the testing equipment is not high and does not play a greater role. A considerable part of companies use equipment to do experiments, only give experimental reports, but less analysis of experimental results, research production process. Therefore, adopting advanced, high-precision quality inspection equipment, actively absorbing and digesting international advanced standards, standardizing industry standards, and giving full play to the role of existing equipment are the most important tasks in meeting the challenges of WTO entry.
Second, adhesive advanced quality inspection equipment introduction
1. Initial viscous tester. Suitable for initial tack testing of pressure sensitive tapes and other related products. Adopt the internationally common inclined ball method, adjust the tilt angle 0-30°, and prepare the standard steel ball (1/32~lin).
2. Holding a sticky tester. Applicable to sticky tape and other products holding sticky test. Standard test plate, loading plate, weight, precise timing mechanism design, can measure six groups of samples at the same time.
3. PC type intelligent electronic tensile testing machine. Suitable for adhesive 180° peel, 90° peel test. The aircraft host LCD large-screen LCD display, PVC operation panel, high-precision speed control motor can be set eight-speed, standard configuration HP computers, HP printers. Host liquid crystal and computer display show the entire test process, curve. Users can modify the test report and set the contents according to their own requirements. The unique stripping curve automatically goes from head to tail and data analysis, group test curve superposition analysis, and multi-mode data past query function enable managers to accurately grasp control parameters and grasp quality changes.
4. Adhesive tensile shear tester. Suitable for all kinds of adhesive stretching, shearing, pressure shearing, pull-off test. The test load of this machine adopts hydraulic dragging, and the force measurement system adopts a high-precision force value sensor. The control system conducts high-speed data acquisition, processing, and sending to the test process. Configure communication cables, software, data analysis and query. The unique automatic recording test time and the end of the test show the maximum force value and test intensity of the test process.
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