1. Examination of prevalent stress configurations in silicone hoses
In engineering, mechanical extrusion usually means the radial compression or local clamping distortion of silicone hoses when they are pushed or pulled on by something else. Mechanical compression comes from outside the hose, not from inside it. There are many different types of mechanical compression, and they commonly happen over and over again.
Compression that happens every so oftenThe functioning condition of peristaltic pumps is what most people think of as a representative. The roller keeps moving the medium forward by compressing the silicone hose over and over. In this situation, the hose needs to be able to handle high-frequency, regulated
2. Is silicone a good material for mechanical compression?
The first step in finding out if a silicone hose can handle mechanical compression is to go back to the substance itself.Very stretchy and strongSilicone is a very flexible polymer that can quickly return to its original shape when put under pressure within a reasonable range of strain. of this, it works very well when it is compressed for a short time or on a regular basis.
Low persistent deformation traitsHigh-quality silicone materials are less likely to permanently flatten after being compressed many times than regular rubber. This is especially significant for conditions that last for a long time.
Very stable temperatureSilicone hoses can keep their physical properties steady even when the temperature changes a lot. When the temperature is high, materials won't lose much of their resistance to compression because they soften. When the temperature is low, they don't become brittle readily.
3. The design of the silicone hose structure
In real life, the way silicone hoses are built often has a bigger effect on their ability to resist compression than the substance itself.
A regular silicone hose with one layerThis kind of hose is easy to work with, bends easily, and can handle light or occasional compression. But if you use it for a long time or a lot of times, it can get local fatigue or deformation. It is not suggested for usage in situations like peristaltic pumps.
A silicone hose that is thickerIncreasing the wall thickness can make it more able to handle outside pressure and not collapse. Works well for applications that need clamping, fixing, or limited space, but not much flexibility.
Silicone hose with fiber reinforcementAdding woven layers of polyester, aramid, or glass fiber to the silicone layer can make it far more resistant to negative pressure and compression. Many industrial machines use this kind of hose.
4. Silicone hose with steel wire inside
It is mostly used to handle high external pressure or negative pressure settings, although its strength and flexibility may be damaged to some extent, making it not good for squeezing a lot of times in a row.
5. A special silicone hose for a peristaltic pump
This class is the best at withstanding mechanical extrusion since it is developed for high-frequency mechanical extrusion and is optimized for resilience, fatigue life, and dimensional stability.t is clear from this that silicone hoses can only handle mechanical compression if the construction fits the use case.
Long-term effects of mechanical extrusion on silicone hoses' performancChanges in the inner diameter can cause flow to alter.Long-term compression may induce alterations in the inner diameter in some places, which could make it harder to move medium.
Accumulation of material fatigueConstant high-frequency compression can speed up the wear and tear on materials, which might lead to less elasticity or fissures on the surface.Risk of permanent deformityIf the hose is compressed too much, it may not be able to return to its previous shape.
6. Important outside influences that affect how well silicone hoses can resist extrusion
Along with materials and construction, the following outside variables must not be overlooked:The amount of the squeezing force and the region of contactHoses are more likely to break when there is high pressure in a small area than when there is low pressure in a vast area.Frequency of squeezingHigh-frequency cyclic extrusion has a far bigger effect on material fatigue than low-frequency extrusion does.
7. The performance of silicone hoses in typical industries when used in mechanical extrusion
The food and drink businessOften used in machinery for filling, moving, and measuring. People frequently choose thick or reinforced silicone hoses if there is clamping or squeezing.Medical and lab toolsThere are very high criteria for resilience and uniformity, and many people employ specific silicone hoses for peristaltic pumps.
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