Rubber sealing strips can be classified based on several methods、 such as cross-sectional shape、 vulcanization method、 location and purpose of use、 and materials used. According to the vulcanization method、 it is divided into (1) non continuous vulcanization method (cutting the extruded rubber strip according to a certain length、 placing it in a vulcanization tank for vulcanization、 and placing the semi-finished extruded rubber strip into a model for vulcanization); (2) Continuous vulcanization method (including microwave continuous vulcanization method、 salt bath continuous vulcanization method、 hot air continuous vulcanization method、 etc.). A. Microwave continuous vulcanization composite sealing strip: Microwave vulcanization technology is a widely promoted production technology applied after the energy crisis abroad in the 1970s. The use of microwave continuous vulcanization technology not only enables the production of composite strips made of various materials such as metal core、 solid core rubber、 and sponge rubber、 but also has advantages over other continuous vulcanization devices in terms of energy conservation and improving work efficiency. This technology is widely recognized as the best process method for producing extruded products worldwide. The characteristic of microwave heating is that heat is generated directly within the heated object、 rather than being input from the outside as usual. This not only generates heat quickly、 but also distributes evenly、 which is beneficial for improving product quality and greatly shortening the heating time. B. Salt bath continuous vulcanization sealing strip: Salt bath vulcanization uses a salt bath system containing nitrite、 which causes significant environmental pollution and has gradually been phased out. Sulfurization (Tmax: 450 ° C and Vmax: 60m/s) can also achieve the effect of flame pretreatment、 greatly improving safety. 2、 According to the classification of rubber sealing strip materials、 there are three types of rubber materials for automotive sealing strips: dense rubber、 sponge rubber、 and hard rubber. The hardness of hard rubber can reach Shore A95. The rubber used for sealing strips is mostly made of ethylene propylene diene monomer (EPDM)、 which is resistant to aging、 low temperature、 water vapor、 chemical corrosion、 and ozone aging. EPDM can be combined with steel strip、 steel wire woven strip、 TPE、 flannel、 flocking、 PU coating、 organic silicon coating、 etc. to ensure the waterproof、 dustproof、 sound insulation、 thermal insulation、 vibration reduction、 wear resistance、 and decorative effects of the car interior、 external environment、 and itself. Under normal circumstances、 EPDM sealing strips can be stably used for more than ten years. You can also choose chloroprene rubber (CR) with good ozone resistance and good aging resistance. Considering the process performance of commonly used rubber compounds、 it is sometimes necessary to use a combination of rubber、 such as natural rubber (NR)、 CR and styrene butadiene rubber (SBR)、 or polyethylene (PE)、 EPDM、 and NR rubber to improve ozone resistance

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

inspection and testing process:

1. Telephone communication and confirmation of requirements

Testing and testing characteristics:

1. The testing industry is fully covered、 meeting different testing needs

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing、 with no testing fees charged

5. Self service order delivery for free on-site sampling