Although vulcanized rubber strips have good comprehensive properties, not all products can be used in a wide range. NBR materials with good oil and solvent resistance are prone to aging and cracking under oxidation, and their cold resistance is relatively poor. It is quite targeted to distinguish the material types of rubber strips used as a reference. 3. In addition to the reference value of material and comprehensive performance, the sealing effect is also a core element that cannot be ignored for the distinction between the types of rubber strips, and to do this, it is necessary to select high quality manufacturers and products to ensure its effect.

There are many functions of the sealant strip, including the sound insulation, so many people will think that the sealant strip is useful for car sound insulation. But in fact, the effect of the sealing strip on the sound insulation of the car can be described as minimal. First of all, although the role of the sealing strip includes sound insulation, but the biggest role of the actual strip is sealing, used to improve the sealing of the vehicle, the so-called sound insulation in some cases is to prevent the vehicle parts contact, wear and tear generated by the noise. To give a simple example, a sealing strip is pasted under the engine cover, hoping to reduce engine noise, but in fact the engine

Door and window sealing strips are commonly black rubber objects, which are commonly found at the edges of doors and windows, and are elastic strip-shaped or rod-shaped materials on the combined parts of glass and bead, glass and frame fan, frame and fan, fan and fan. It can block water, wind, sound, etc., and temperature, and can prevent mechanical damage caused by metal collision, so it can be sealed, sound insulation, heat insulation and shock absorption. Therefore, as a key part of doors and windows, it must have sufficient tensile strength, good elasticity, good temperature resistance and aging resistance, so as to ensure a good use experience and a comfortable home experience of doors and windows. Therefore, its section

The sealing strip market is mainly made of ethylene propylene diene monomer (EPDM) rubber, rubber and plastic. According to its use, it can be divided into automobile sealing strips, mechanical sealing strips, door and window sealing strips and so on. Door and window sealing strips are classified into plastic steel door and window sealing strips, aluminum alloy door and window sealing strips, wooden door sealing strips, cold storage door sealing strips, grain depot door sealing strips, flame retardant door and window sealing strips, glass sealing strips, automatic revolving door sealing strips, building door sealing strips, curtain wall sealing strips, etc. The characteristics of the door and window sealing strip are the new generation of doors and windows that have been widely used in recent years. It has better corrosion resistance and weather resistance than ordinary door and window sealing strips.

A tubular rubber product used to transport gas, liquid, slurry or granular materials. It is composed of inner and outer rubber layer and skeleton layer. The material of the skeleton layer can be cotton fiber, various synthetic fibers, carbon fiber or asbestos, steel wire, etc. The inner and outer rubber layer of the general hose is made of natural rubber, styrene butadiene rubber or butadiene rubber; oil-resistant hose is made of chloroprene rubber and nitrile rubber; acid and alkali resistant, high temperature resistant hose is made of ethylene propylene rubber, fluorine rubber or silicone rubber. In recent years, thermoplastic rubbers such as thermoplastic urethane rubbers, polyester rubbers and the like have come to be used. Because of the advantages of easy bending, buffering, light weight and easy installation and use, the hose has a wide range of uses,

The price is relatively low. Due to the different quality, the price is generally between 6000 yuan and 15000 yuan/ton. Low-end products due to the use of waste, alternative plasticizers and high filling amount, to make the rubber strip elasticity is poor, easy to harden, there is a thorn nose smell, easy to migrate to make the frame material yellow, short service life. A small number of doors and windows in the low level of price competition enterprises are still in use. Medium and high-end PVC rubber strips can reach the standard index, and the service life is relatively long. Because PVC products contain halogen, stabilizer contains heavy gold A, it is not conducive to environmental protection, so foreign developed countries and domestic Beijing and coastal cities have eliminated or restricted the use of PV.

This paper briefly introduces how to detect the quality of high-pressure rubber hose: first of all, starting from visual inspection, the wall thickness of rubber hose with poor quality is uneven, the steel wire is too tightly woven or the number of layers is too small, the rubber hose will deform greatly under slight pressure change, be easily corroded by corrosion, and the adhesive force between the rubber layer and the steel wire layer is lack, which will make the pipe wall easily burst. Secondly, improper selection of the buckling amount and buckling speed during the assembly of the hose and the joint, or unreasonable selection of the structure, material and size of the joint, can lead to too tight or too loose pressure between the hose and the joint, resulting in early damage to the joint. In addition, the joint design is unreasonable, poor processing quality, will also constitute the internal glue.

1, vulcanization did not reach positive vulcanization, the form of sulfur or sulfur. Due to the above two reasons, its various attributes and functions cannot meet the requirements, resulting in problems during use. 2. The wall thickness of the hose is uneven, especially the inner rubber layer has the greatest influence. 3. The steel wire weaving or winding process did not follow the design process, the weaving angle did not reach 54 degrees and 44 minutes, the steel wire weaving was too tight or too loose, and the deformation (elongation, shortening or bending deformation) of the high-pressure hose during use (after pressurization) was large. 4. Poor air tightness of the outer layer of glue leads to corrosion of the steel wire. 5, the inner layer of rubber sealing is poor and the high pressure oil easily into the steel wire