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A rubber inner tube, air-free technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of small elasticity, poor riding comfort, and lack of promotion
Inactive Publication Date: 2017-06-20
ZHEJIANG DIMA RUBBER
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[0004] At present, almost all the inner tubes of bicycles and baby stroller tires on the market use pneumatic inner tubes. It is polyurethane rubber foam, but because of its small elasticity, weak load-carrying capacity, and poor riding comfort, it is only suitable for baby stroller tires and has not been widely promoted.
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Embodiment 1
[0032] An air-free rubber inner tube is characterized in that the ratio of raw and auxiliary materials by weight includes the following components:
[0033]
[0034] Among the above materials,
[0035] Natural rubber: the tensile strength is required to be greater than 18 MPa.
[0036] Reclaimed rubber: It is required to be tasteless and fine reclaimed rubber above 60 mesh.
[0037] Composite glue: mainly to increase product elasticity.
[0038] Carbon black: more than N330 is required, mainly for reinforcement, increasing the wear resistance and hardness of the product.
[0039] Calcium carbonate: Fills the rubber body.
[0040] Zinc oxide: Activate the entire vulcanization system of rubber and increase the crosslink density.
[0041] Stearic acid: Activator, plasticizer and softener for rubber vulcanization.
[0042] Anti-aging agent: improve the aging resistance and thermal stability of the product.
[0043] Chemical foaming agent: closed-cell foaming is required, ...
Embodiment 2
[0053] An air-free rubber inner tube is characterized in that the ratio of raw and auxiliary materials by weight includes the following components:
[0054]
[0055]
[0056] The manufacture method of above-mentioned air-free rubber inner tube, technological process are the same as embodiment 1
[0057] The inner tubes of rubber bicycles and baby carriages produced by the invention are of solid structure, sponge-like and porous after foam molding, free of inflation, puncture-resistant, highly elastic, and never "puncture".
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Abstract
The invention discloses a non-pneumatic rubber inner tire. The non-pneumatic rubber inner tire comprises, by weight, 30 to 50 parts of natural rubber, 90 to 110 parts of reclaimed rubber, 10 to 20 parts of a composite glue, 5 to 8 parts of carbon black, 40 to 50 parts of calcium carbonate, 3 to 5 parts of zinc oxide, 2 to 4 parts of stearic acid, 1 to 2 parts of an anti-aging agent, 3 to 5 parts of a chemical blowing agent, 3 to 5 parts of sulphur, 1.5 to 2 parts of promoter M&D, and 4 to 6 parts of urea. The non-pneumatic rubber inner tire is non-pneumatic, is capable of avoiding puncture, and is high in elasticity, and tire burst is avoided completely.
Description
[0001] Technical field: [0002] The invention relates to an air-free rubber inner tube. [0003] Background technique: [0004] At present, almost all the inner tubes of bicycles and baby stroller tires on the market use inflatable inner tubes. It is polyurethane rubber foam, but because of its small elasticity, weak load-carrying capacity, and poor riding comfort, it is only suitable for baby stroller tires and cannot be widely promoted. [0005] Invention content: [0006] The technical problem to be solved by the present invention is to provide a non-inflatable rubber inner tube for bicycles and baby carriages that is free of inflation, puncture-proof, highly elastic, never "punctured", has strong bearing capacity, and has good riding comfort. [0007] Technical scheme of the present invention is: [0008] An air-free rubber inner tube is characterized in that the ratio of raw and auxiliary materials by weight includes the following components: [0009] [0010] Amon...
Claims
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Application Information
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