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Rubber composition and preparation method thereof
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A technology of rubber composition and masterbatch, which is applied in the field of rubber, can solve the problems such as not easy to disperse, and achieve the effect of good wear, high tensile strength and balance
Pending Publication Date: 2022-08-09
QINGDAO DOUBLESTAR TIRE IND CO LTD
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Problems solved by technology
[0005] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present invention is to overcome the problem that the existing natural rubber system uses white carbon black as a reinforcing material that is not easy to disperse, and propose a method that can reduce hysteresisenergy loss and reduce rubber compound Heat generation, significantly improving the controllability of the rubber compound, improving the processability of the rubber compound and its preparation method
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Embodiment 1
[0050] This embodiment provides a hydroxy POSS / natural rubber composition for regulating the physicochemical properties of the sizing material and a preparation method thereof.
[0051] The formula is specifically:
[0052] In parts by weight, it includes the following components: 100 parts of natural rubber, 2 parts of D-POSS, 5 parts of silane coupling agent, 40 parts of high wear-resistant carbon black (HAF) N330, 8 parts of zincoxide, 2.5 parts of stearic acid parts, 2.5 parts of antioxidant, 3 parts of S, and 1 part of accelerator; among them, granule glue 1# is used, the molecular weight is 300,000-350,000, the low viscositysystem is used, the Mooney viscosity is 68 degrees, and 1,4- The isoprene unit accounts for 90% of the mass of the rubber segment of the pellet rubber.
[0053] The preparation method includes the following steps:
[0054] The first stage of mixing: the rotor speed is 45rpm, and the upper bolt pressure is 6.0MPa. First, the hydroxyl POSS and silan...
Embodiment 2
[0058] This embodiment provides a hydroxy POSS / natural rubber composition for regulating the physicochemical properties of the sizing material and a preparation method thereof.
[0059] The formula is specifically:
[0060] In parts by weight, it includes the following components: 100 parts of natural rubber, 2.2 parts of D-POSS, 5 parts of silane coupling agent, 40 parts of high wear-resistant carbon black (HAF) N330, 8 parts of zincoxide, 2.5 parts of stearic acid parts, 2.5 parts of antioxidant, 3 parts of S, and 1 part of accelerator.
[0061] The preparation method is the same as in Example 1.
Embodiment 3
[0063] This embodiment provides a hydroxy POSS / natural rubber composition for regulating the physicochemical properties of the sizing material and a preparation method thereof.
[0064] The formula is specifically:
[0065] In parts by weight, it includes the following components: 100 parts of natural rubber, 3 parts of D-POSS, 5 parts of silane coupling agent, 40 parts of high wear-resistant carbon black (HAF) N330, 8 parts of zincoxide, 2.5 parts of stearic acid parts, 2.5 parts of antioxidant, 3 parts of S, and 1 part of accelerator.
[0066] The preparation method is the same as in Example 1.
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Abstract
The invention discloses a rubber composition and a preparation method thereof, and belongs to the technical field of rubber. The modified natural rubber comprises the following components in parts by weight: 100 parts of natural rubber, 1-3 parts of hydroxyl POSS (Polyhedral Oligomeric Silsesquioxane) and 5-10 parts of a silanecoupling agent, the hydroxyl POSS is any one of octahydroxy butylation-POSS, trans-cyclohexanediol heptyl-POSS, trisilanol-isooctyl-POSS and trisilanol phenyl-POSS, and the hydroxyl POSS is any one of octahydroxy butylation-POSS, trans-cyclohexanediol heptyl-POSS, trisilanol-isooctyl-POSS and trisilanol phenyl-POSS. The silanecoupling agent is liquid Si-69, and the main structure of the silanecoupling agent is bis-[gamma-(triethoxysilyl) propyl] tetrasulfide. The invention is applied to the aspect of rubber materials, solves the problem that the existing natural rubbersystem takes white carbon black as a reinforcing material and is not easy to disperse, and can reduce the hysteresisenergy loss, reduce the heat generation of the rubber materials, obviously improve the controllability of the rubber materials and improve the processability of the rubber materials.
Description
technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a rubber composition and a preparation method thereof. Background technique [0002] Since the tire itself is temperature sensitive and is a poor conductor of heat, during use, a large amount of heat generated by dynamic heat generation accumulates inside the material, resulting in an increase in temperature. Therefore, on the one hand, the oxidation of the rubber will be accelerated, the molecular chain will be broken, and softening will occur; on the other hand, the temperature may also lead to further branching and cross-linking of the rubber, which will reduce the strength of the rubber, harden the surface, crack and lose elasticity, and deteriorate the product. performance, thereby shortening product life and increasing safety risks. [0003] Existing tires are often made of natural rubber and butadiene rubber as the main materials, and silica as the reinforcing ...
Claims
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Application Information
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