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Dongguan Minz Rubber & Plastics Co., Ltd.

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The production process of silicone hose_the use of silicone hose is a problem to be paid attention

Release time:

2019-06-03 12:30

Source:

Silicone hoseThe production process of_the use of silicone hose is to pay attention to the problem
 
Production process of silicone hose
 
Silicone hose is a common silicone material products, with excellent high temperature and low temperature resistance; good physiological stability, excellent resilience and small permanent deformation; ozone resistance, UV resistance, aging resistance and other characteristics. The most important thing is green and environmentally friendly, in line with food-grade certification, so Dongguan silicone products factory silicone hose is widely used in various fields of industry. So how is the silicone hose produced?
 
1. Rubber mixing: The rubber mixing raw materials are mixed with double -24 or platinum vulcanizing agent or silica gel color masterbatch in a double-stick rubber mixing machine, and pressed into a layer of silica gel extrusion material with uniform thickness.
 
2. Extrusion molding: the die is installed in the head of the silicone extruder. The refined rubber is divided into shapes of the same size and length, so that it is convenient to feed from the inlet of the extruder. Then through the silicone extruder feeding, extrusion molding but very soft silicone hose, silicone hose into 8 meters long drying tunnel, high temperature vulcanization. The silicone hose coming out of the drying tunnel can be semi-finished and then wound.
 
3. High temperature vulcanization: Put the wrapped silicone hose into the oven, ordinary silicone 180 degrees, gas phase silicone hose 200 degrees, high temperature for 2 hours, and carry out secondary vulcanization to remove the peculiar smell on the silicone hose and prevent frost spray and yellowing.
 
4. Follow-up processing: The rest is to carry out subsequent processing such as cutting or bonding according to the length required by the customer. According to the requirements of packaging and shipping to customers.
Silicone tube production methods are as follows: extrusion molding, molding, bonding and other processes. To extrude silicone tube for example:
 
① Mixing glue: silica gel is mixed evenly, and color masterbatch and vulcanizing agent (platinum vulcanizing agent, BOP vulcanizing agent and double two four vulcanizing agent) are added.
 
② Install the mold in the silicone extrusion equipment, silicone extruder, feeding vulcanization molding, hollow silicone tube, Japanese silicone tube, medical silicone tube, such as the use of such processes;
 
③ Secondary vulcanization, two-stage vulcanization process or oven baking for products with incomplete vulcanization!
 
4 according to the different needs of the silicone tube cut off.
 
The silicone tube again processing, such as fresh-keeping boxes, lunch boxes in the food grade silicone tube stick into a silicone sealing ring (silicone rubber sealing ring). KL-301 silicone tube glue, heating in the machine to take over the two ends of the silicone tube stick together.
 
The medical silicone tube due to strict requirements, the use of platinum curing agent, liquid silicone extrusion molding; in the 300 medical silicone glue can be with stainless steel metal, PVC/PP plastic tube stick together.
 
The use of silicone hose is to pay attention to the problem
1, silicone hose in use has a good tortuous function, can bend the radius is small, and in the twists and turns will not be pleated. Therefore, in order to prevent the temperature from being too high, do not overload for a long time, and pay attention to the radiator fins not to be polluted by oil to prevent dust from adhering to affect the heat dissipation effect; insist on satisfying the amount of oil to facilitate the circulation and heat dissipation of the oil. Pressure inspection, the national standard begs the test pressure is 2 times the working pressure, the explosion pressure is usually 3-4 times the working pressure is qualified.
 
2. Look at the brightness of the section on the surface of the silicone hose. High brightness is the top grade, and it is better to pinch its colloid elasticity with fingernails. Silicone hose in the movement or interruption, can not make it excessive twists and turns, also can not be in the root twists and turns, at least in its diameter of 1.5 times the initial twists and turns, in addition to the high-pressure hose to move to the pole position shall not be pulled too tight, should be compared with lax.
 
3, the use of silicone hose should try to prevent the change of deformation, silicone hose as far as possible away from the heat radiation components, if necessary, can add insulation board, to prevent silicone hose external damage. Such as the use of long-term conflict with the surface of the component, etc., the viscosity of the oil decreased, resulting in leakage, power decline, lubricating oil film strength decline, accelerate the wear of machinery, the generation of carbide and silt, oil oxidation to accelerate the deterioration of oil quality, oil seal, high-pressure hose premature aging.
 
4, silicone hose in cleaning or disinfection, you can use bleach cleaning or with a temperature of 150 degrees above the short-term steam disinfection or hot water cleaning, if the use of disinfectant cleaning as far as possible to choose no smell or light fruit disinfectant.

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