Sealing strip In recent years, the term "new infrastructure" has become very popular. Compared with the “public railway construction” such as highways and railways, the new infrastructure pays more attention to the use of big data as the core technology element to realize the digital transformation of traditional industries. At the same time, the new infrastructure has also spawned many new industry opportunities.

This year's "two sessions", the new infrastructure was included in the government work report. According to statistics, 22 provinces have launched more than 10,000 projects, and the total investment in new infrastructure has exceeded 33 trillion yuan. Huang Qifan, deputy chairman of the China International Economic Exchange Center, believes that the new infrastructure is the strategic basis for leading China's new technology and industrial revolution, and will generate multiple trillion-level investment directions.

In the "new infrastructure", 5G, big data, artificial intelligence, industrial Internet, etc. have become the key content. These are of great significance to the construction of smart cars, smart transportation and smart city related facilities. The application of big data and industrial Internet technology will provide assistance to the innovative business model of the automotive industry and the digital development of manufacturing, and enhance the overall level of digital and intelligent manufacturing in the automotive industry. The advancement of the "new infrastructure" will accelerate the speed of innovation in areas including automotive technology research and development, business models, and production models, and will have a disruptive change in the automotive industry.

According to statistics, auto consumption has accounted for more than a quarter of China's total social retail consumption. So far, my country has been the world's largest automobile consumer for 9 consecutive years. The acceleration of "new infrastructure" has brought new opportunities to the traditional auto industry. As one of the industries with the highest degree of correlation with "new infrastructure", the auto industry is expected to become a new outlet again.

Infatti, dalle direzioni chiave dello sviluppo nazionale si può anche vedere che oltre alla ferrovia intercity ad alta velocità e al transito ferroviario intercity, la restante infrastruttura 5G, UHV, pile di ricarica, big data center, intelligenza artificiale, Internet industriale, ecc. possono essere mangiati dall'industria automobilistica In termini di dividendi politici, il più popolare tra questi sono i nuovi veicoli energetici che il paese ha sviluppato con vigore negli ultimi anni.

Con lo sviluppo dell'intera industria automobilistica, verranno promosse anche le industrie correlate nella corrispondente catena industriale automobilistica. Tra questi, si prevede di migliorare anche l'importante decorazione esterna dei veicoli commerciali, la fascia di tenuta. Pertanto, è fondamentale per le industrie circostanti gettare solide basi e rafforzare il proprio sviluppo del prodotto.

La striscia di tenuta per automobili è una delle dell'auto. Ha la funzione di riempire vari intermittenti e spazi vuoti tra i componenti del corpo. Ha funzioni di assorbimento degli urti, impermeabile, antipolvere, isolamento acustico, decorazione, ecc. Può impedire efficacemente l'ingresso di vento e pioggia nella cabina. , E migliora il comfort di conducenti e passeggeri e protegge il corpo dell'auto.

La saldabilità è un indicatore importante della qualità dell'intero veicolo e la striscia di tenuta dell'automobile svolge un ruolo importante in esso.

There are many types of sealing strips, classified by material, such as TPE, TPV, modified PVC, EPDM rubber, etc. Automobile seals belong to automotive exterior parts, and have basic performance requirements for product performance: aging resistance, weather resistance, resilience, compression permanent deformation resistance, high and low temperature resistance, etc.

There are many sealing strips used on the whole automobile, mainly including front and rear windows, door seals, door glass guide groove seals, sunroof seals, roof cover seals, trunk seals, etc. Sealing strips are used wherever body sheet metal or sheet metal and glass need to be combined.

Vulcanized rubber seal

The common rubber material is EPDM, which has excellent comprehensive performance, outstanding weather resistance, high and low temperature resistance, and outstanding chemical resistance, small relative density, and excellent performance in all aspects. Recognized by foreign companies, the shortcomings cannot be recycled.

TPV sealing strip

It has the excellent properties of rubber and plastic, and can be recycled and reused. It is similar to the processing performance of plastics. It has good heat resistance, cold resistance, low density, and solvent resistance. It is similar to neoprene rubber.

TPE sealing strip

It is usually blended and modified with SEBS as the base material, and is usually used in doors, windows, furniture, automobiles, household appliances and so on. With the improvement of people's living standards and the pursuit of quality of life, the importance of the appearance, environmental protection and comfort of the sealing strip is increasingly prominent. TPE sealing strip has the following characteristics:

1. Environmentally friendly and odorless, meeting environmental protection requirements such as REACH and ROHS, and products can be recycled;

2. Small density, equivalent to about 67% of EPDM seals;

3. Good aging resistance and good resilience performance;

4. High production efficiency, simple processing technology, several times faster than rubber, low cost and low comprehensive economic benefits;

Modified PVC sealing strip

PVC material is cheap and easy to obtain, with corrosion resistance, wear resistance, acid and alkali resistance and various chemical media, flame resistance, high mechanical strength, the disadvantage is that the plasticizer in the formula is easy to migrate, it becomes hard and brittle with time, and loses its elasticity , Not resistant to aging, poor weather resistance and low temperature performance. Generally dark products. It is suitable for occasions where the illumination is not strong, the temperature change is not big, and the climatic conditions are not bad.

Sebbene la guarnizione dell'auto sia solo una piccola parte dell'auto, può garantire che la portiera sia stabile e pesante e può proteggere l'auto da agenti atmosferici, polvere, calore e suoni. Ha anche un effetto decorativo sul bordo della giunzione di porte e finestre. Quando il corpo viene vibrato e attorcigliato, la striscia di tenuta può anche svolgere un ruolo nel tamponamento, nell'assorbimento degli urti e nella protezione del vetro. Si può vedere che tutte le piccole parti poco appariscenti contengono grande saggezza e sono accompagnate da enormi opportunità di business.