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An additive capable of improving the dynamic mechanical properties of rubber and its preparation and application
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A dynamic mechanics, additive technology, applied in the field of tire rubber additives, to reduce the effect of the three-dimensional network structure of the filler
Active Publication Date: 2019-12-27
TONGJI UNIV
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Description
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And present rubber additive is difficult to solve the above-mentioned problem, and the present invention just proposes based on this kind of background
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preparation example Construction
[0054] A preparation method for an additive capable of improving the dynamic mechanical properties of rubber, comprising the following steps:
[0055] (1) Take dicarboxylic acid and alkali, or directly take the salt of dicarboxylic acid and place it in a polar solvent, heat until the solution is completely transparent, and obtain dicarboxylate solution A;
[0056] (2) Take aromatic carboxylic acid with phenolic hydroxyl group and base, or directly take the salt of aromatic carboxylic acid with phenolic hydroxyl group and place it in a polar solvent, heat until the solution is completely transparent, and obtain a solution of aromatic carboxylate with phenolic hydroxyl group B;
[0057] (3) Under stirring conditions, mix the dicarboxylate solution A, the aromatic carboxylate solution B with phenolic hydroxyl group and the prepared metal element M solution, react, filter, wash, and dry to obtain the desired product rubber additive ;
[0081] An additive that can improve the dynamic mechanical properties of rubber, its chemical structural formula is:
[0082]
[0083] The preparation method of above-mentioned additive comprises the following steps:
[0084] (1) Add 1 L of distilled water and 16 g of solidsodiumhydroxide (purity ≥ 97%, purchased from Aladdin) into a 2 L beaker. After the sodiumhydroxide was completely dissolved, 42.05g of 3,3'-dithiodipropionic acid (purity≥99.0% (GC)(T), purchased from TCI) was added. The above mixture was heated to 90°C and stirred vigorously for 1 hour until the solution was completely transparent. (Solution A)
[0085] (2) Add 1 L of distilled water and 16 g of solidsodiumhydroxide (purity ≥ 97%, purchased from Aladdin) into a 2 L beaker. After the sodium hydroxide was completely dissolved, 78.88 g of levodopa (DOPA) (purity ≥ 99%, purchased from Aladdin) was added. The above mixture was heated to 90 °C and stirred vigorously for 1 hour until the solution was ...
Embodiment 2
[0090] An additive that can improve the dynamic mechanical properties of rubber, its chemical structural formula is:
[0091]
[0092] The preparation method of above-mentioned additive comprises the following steps:
[0093] (1) Add 1 L of distilled water and 16 g of solidsodium hydroxide (purity ≥ 97%, purchased from Aladdin) into a 2 L beaker. After the sodium hydroxide was completely dissolved, 42.05g of 3,3'-dithiodipropionic acid (purity≥99.0% (GC)(T), purchased from TCI) was added. The above mixture was heated to 90°C and stirred vigorously for 1 hour until the solution was completely transparent. (Solution A)
[0094] (2) Add 1 L of distilled water and 16 g of solid sodium hydroxide (purity ≥ 97%, purchased from Aladdin) into a 2 L beaker. After the sodium hydroxide is completely dissolved, add 37.63g of 3,4,5-trihydroxybenzoic acid (gallic acid) (Vetec TM reagent grade, 98% (Vetec), purchased from Sigma). The above mixture was heated to 90°C and stirred vigor...
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Abstract
The invention relates to an additive capable of improving the dynamic mechanical property of rubber as well as a preparation and application of the additive. The additive has a chemical structural formula as shown in the specification, wherein n is an oxidation state of a metal element M and is equal to 2, 3 or 4; A is one of oxygen, sulfur, carbon, nitrogen, phosphorus and silicon, and x is larger than or equal to 0 and is smaller than or equal to 10; B is one of oxygen, sulfur, carbon, nitrogen, phosphorus and silicon, and y is larger than or equal to 0 and is smaller than or equal to 10; (AxBy)m shows that atoms are connected by chemical bonds, and x and y are not zero at the same time; m is larger than or equal to 0 and is smaller than or equal to 10; z is smaller than or equal to 50;a and b are positive integers; R1 and R2 are aliphatic chains, alicyclic hydrocarbons or aromatic compounds of which the carbon atom numbers range from 0 to 50; and R3, R4, R6 and R8 are aliphatic chains or alicyclic hydrocarbons of which the carbon atom numbers range from 0 to 50, and R5 and R7 are aromatic compounds. When the additive prepared by using the preparation method is used for preparing rubber, the dynamic mechanical property of the rubber is improved, and parts of rubber compositions containing the rubber additive have improved Shorehardness and elasticity modulus and reduced loss factors.
Description
technical field [0001] The invention relates to the field of tire rubber additives, in particular to an additive capable of improving the dynamic mechanical properties of rubber and its preparation and application. Background technique [0002] When a car is running, energy will be consumed by various resistances, and about 20% of gasoline is consumed by tire rolling resistance. Reducing tire rubber rolling resistance reduces this energy consumption, resulting in better fuel economy. [0003] In the tire industry, rubber formulations are designed considering a balance of different properties such as tensile properties, rolling resistance and wet skid resistance. In general, changing a component to improve one or more of these properties often results in a decrease in the other properties. When it is highly desirable to reduce the rolling resistance of a tire by introducing an additive, it is important to maintain other key properties of the rubber material, such as tensile...
Claims
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Application Information
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