Many small wheels on the market for baby carriages, trolley cases and other products need to have a certain load-bearing capacity and shock absorption performance, appropriately reduce the soft contact between the tire and the ground, and reduce the friction between the tire and the ground. You can use foamed tires or mid-air. Heart-shaped foam tires. Foamed small tires have certain requirements on the mechanical strength and wear resistance of the rubber. The use of latex reclaimed rubber, or the combined use of latex reclaimed rubber and natural rubber to produce foam wheels can effectively reduce the cost of raw materials. If necessary, you can also choose rubber and plastic. .
1. Tips for selecting latex reclaimed rubber
When using latex reclaimed rubber to produce low-cost foamed wheels, it is necessary to select suitable reclaimed rubber products according to the color and mechanical strength of the foamed tire. In general, it is easier to match colors by choosing white latex reclaimed rubber 2LLYY1218 for light-colored and colored foaming wheels or the corresponding color reclaimed latex rubber, which can reduce the cost of partial color distribution. In theory, choosing the product that is closest to the physical properties of the foamed tire can increase the amount of latex reclaimed rubber and reduce more raw material costs.
In order to avoid the harmful substances released during the production and use of the foaming ferry and affecting human health, it is necessary to use environmentally friendly reclaimed latex rubber that can provide relevant environmental protection test reports. At present, the EU ROHS test standard is more common.
2. Other raw materials selection skills
In terms of raw materials, rubber product manufacturers can use natural rubber in an appropriate amount in the latex reclaimed rubber, or add a small amount of high styrene, to further improve the mechanical strength, elasticity, and wear resistance of the foamed wheel.
As for accessories, black and dark rubber foamed tires can be reinforced with carbon black and filled with calcium carbonate. It is recommended to use white carbon black instead of carbon black for light and colored foamed wheels. The softening system and anti-aging system should avoid the use of pollution-type compounding agents, such as aromatic oil, asphalt, anti-aging agent A, etc. should not be used to avoid harmful substances in the finished product and avoid discoloration and migration.
3. The main points of rubber raw and auxiliary materials
When designing the rubber foaming wheel formula with latex reclaimed rubber as the main raw material, the traditional sulfur vulcanization system is generally used, the cost of the compounding agent is low, and the rubber material basically does not emit peculiar smell. The reinforcing system can be used in combination with carbon black/white carbon black, light calcium, and talc. The softening system can choose naphthenic oil, paraffin oil, and suitable amount of chemical plasticizer. Anti-aging system can use anti-aging agent MB, anti-aging agent SP-C, anti-aging agent 264, anti-aging agent 2246, etc. When the foaming agent H is used alone, the cell diameter is smaller. When the latex reclaimed rubber is used to produce rubber foaming wheels, the foaming agent H can be used alone, or the foaming agent H can be combined with alum and soda.
When using latex reclaimed rubber as the main raw material to produce foamed rubber wheels, rubber products manufacturers must choose environmentally friendly raw materials and auxiliary materials. When designing the matching system, it is also necessary to pay attention to whether the reaction between the compounding agents will generate harmful substances. In the production process of foaming wheel, it is necessary to set the processing parameters reasonably to optimize the product quality. The editor will continue to discuss with you later.
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