A kind of high hardness damping rubber and preparation method thereof

Abstract

The invention discloses a high-hardness shock-absorbing rubber, which comprises the following ingredients in parts by weight: 100 parts of raw rubber, 7.8-12.2 parts of an active protection system, 90.8-121.2 parts of a reinforcing system, and 3.7-5.7 parts of a vulcanization system. The reinforcing system includes glyceryl methacrylate. The high-hardness shock-absorbing rubber of the present invention, by adding glyceryl methacrylate in the formula, has the dual effects of plasticization and hardness improvement, overcomes the processing and performance limits of rubber products for high hardness, and makes the rubber have High hardness (hardness 92°Shore A), excellent rigidity, mechanical properties, good shock absorption effect and long service life; the obtained rubber products can be well applied to buffer rubber for rail transit gear transmissions. At the same time, the invention also discloses a preparation method of the high-hardness shock-absorbing rubber.

Description

Technical field

[0001] The present invention belongs to the field of rubber articles, especially a high hardness shock absorbing rubber and a preparation method thereof.Background technique

[0002] High-hardness rubber products have generally existed the problem of elasticity and difficulty in forming healing, plus the size of the product, high thickness, and a higher requirement for manufacturing processing. With a traditional rubber fitting scheme, there is a problem that the flow is difficult, and the compound is easy to layered, in particular when the article is installed under high pressure conditions, it is prone to cracking abnormalities.

[0003] "Modified Forming" is a generally employed rubber molding process, and the rubber raw material is placed in a mold cavity of the sulfide molding machine, and the mold is hot after a certain period of time to obtain the required article. Compared to "molding", "injection molding" is suitable for products that are relatively complicated to pro...

Examples

Embodiment 1

[0028]An embodiment of the high hardness shock absorbing rubber of the present invention, the high hardness shock absorbing rubber contains components of the following weight:

[0029]Both glue (3 # natural tobacco: NR) 100 copies, 15 of medium super wear-resistant carbon black (N220), 40 parts of high resistant carbon black (N330), 40 copostarized carbon black (N550), Rhine 1 10 parts of methacrylate, zinc oxide (ZnO purity ≥99.7%), 2 hydrolic acid (SA), 1 part of phenylenediamine, antioxidative agent (4010), ketamamamine antioxidative agent ( RD) 2 parts, sulfur 2 parts, 2-thiol-phrobenzene thiazole 0.5 parts, 0.8 parts of dithiarazole, N-cyclohexyl-2-benzothiazazole subolysulfonamide 1.4 parts.

[0030]The method of high hardness shock absorbing rubber is: mixing each component is uniform, obtaining a mixture; automatically feeding the mixture through the injection molding machine into the machine injection, and then via the mold injection The mouth and the flow path injected the plast...

Embodiment 2

[0032]An embodiment of the high hardness shock absorbing rubber of the present invention, the high hardness shock absorbing rubber contains components of the following weight:

[0033]Both glue (3 # natural tobacco: NR) 100 parts, medium super wear-resistant carbon black (N220), 35 high-resistance carbon black (N330), fast pressure carbon black (N550), Rhine 0.8 Part, 8 parts of methacrylate, zinc oxide (ZnO purity ≥99.7%), 1.5 parts of stearic acid (SA), 0.8 phenylenediamine antioxidants (4010), ketamine antioxidative agent ( RD) 1.5 parts, sulfur 1.5 parts, 2-thiol-2-thiazole of 0.4 parts, 0.6 parts of dithiazine thiazole, N-cyclohexyl-2-benzothiazolia sulfonamide 1.2 parts.

[0034]The method of high hardness shock absorbing rubber is: mixing each component is uniform, obtaining a mixture; automatically feeding the mixture through the injection molding machine into the machine injection, and then via the mold injection The mouth and the flow path injected the plasticized mixture into t...

Embodiment 3

[0036]An embodiment of the high hardness shock absorbing rubber of the present invention, the high hardness shock absorbing rubber contains components of the following weight:

[0037]Both glue (3 # natural tobacco: NR) 100 copies, Super Fort-resistant carbon black (N220), high resistance carbon black (N330), fast pressure carbon black (N550) 45 copies, Rhine 1.2 12 parts of methacrylate, zinc oxide (ZnO purity ≥99.7%), 2.5 stearic acid (SA), 1.2 cophenylenediamine antioxidants (4010), ketamam amine antioxidative agent ( RD) 2.5 parts, 0.5 parts of sulfur, 0.6 parts of 2-thiol-phrobenzene thiazole, 1.0 parts of disulfurized diphenyl thiazole, N-cyclohexyl-2-benzothiazolia sulfonamide 1.6 parts.

[0038]The method of high hardness shock absorbing rubber is: mixing each component is uniform, obtaining a mixture; automatically feeding the mixture through the injection molding machine into the machine injection, and then via the mold injection The mouth and the flow path injected the plastici...

Technical field

[0001] The present invention belongs to the field of rubber articles, especially a high hardness shock absorbing rubber and a preparation method thereof.Background technique

[0002] High-hardness rubber products have generally existed the problem of elasticity and difficulty in forming healing, plus the size of the product, high thickness, and a higher requirement for manufacturing processing. With a traditional rubber fitting scheme, there is a problem that the flow is difficult, and the compound is easy to layered, in particular when the article is installed under high pressure conditions, it is prone to cracking abnormalities.

[0003] "Modified Forming" is a generally employed rubber molding process, and the rubber raw material is placed in a mold cavity of the sulfide molding machine, and the mold is hot after a certain period of time to obtain the required article. Compared to "molding", "injection molding" is suitable for products that are relatively complicated to pro...

Examples

Embodiment 1

[0028]An embodiment of the high hardness shock absorbing rubber of the present invention, the high hardness shock absorbing rubber contains components of the following weight:

[0029]Both glue (3 # natural tobacco: NR) 100 copies, 15 of medium super wear-resistant carbon black (N220), 40 parts of high resistant carbon black (N330), 40 copostarized carbon black (N550), Rhine 1 10 parts of methacrylate, zinc oxide (ZnO purity ≥99.7%), 2 hydrolic acid (SA), 1 part of phenylenediamine, antioxidative agent (4010), ketamamamine antioxidative agent ( RD) 2 parts, sulfur 2 parts, 2-thiol-phrobenzene thiazole 0.5 parts, 0.8 parts of dithiarazole, N-cyclohexyl-2-benzothiazazole subolysulfonamide 1.4 parts.

[0030]The method of high hardness shock absorbing rubber is: mixing each component is uniform, obtaining a mixture; automatically feeding the mixture through the injection molding machine into the machine injection, and then via the mold injection The mouth and the flow path injected the plast...

Embodiment 2

[0032]An embodiment of the high hardness shock absorbing rubber of the present invention, the high hardness shock absorbing rubber contains components of the following weight:

[0033]Both glue (3 # natural tobacco: NR) 100 parts, medium super wear-resistant carbon black (N220), 35 high-resistance carbon black (N330), fast pressure carbon black (N550), Rhine 0.8 Part, 8 parts of methacrylate, zinc oxide (ZnO purity ≥99.7%), 1.5 parts of stearic acid (SA), 0.8 phenylenediamine antioxidants (4010), ketamine antioxidative agent ( RD) 1.5 parts, sulfur 1.5 parts, 2-thiol-2-thiazole of 0.4 parts, 0.6 parts of dithiazine thiazole, N-cyclohexyl-2-benzothiazolia sulfonamide 1.2 parts.

[0034]The method of high hardness shock absorbing rubber is: mixing each component is uniform, obtaining a mixture; automatically feeding the mixture through the injection molding machine into the machine injection, and then via the mold injection The mouth and the flow path injected the plasticized mixture into t...

Embodiment 3

[0036]An embodiment of the high hardness shock absorbing rubber of the present invention, the high hardness shock absorbing rubber contains components of the following weight:

[0037]Both glue (3 # natural tobacco: NR) 100 copies, Super Fort-resistant carbon black (N220), high resistance carbon black (N330), fast pressure carbon black (N550) 45 copies, Rhine 1.2 12 parts of methacrylate, zinc oxide (ZnO purity ≥99.7%), 2.5 stearic acid (SA), 1.2 cophenylenediamine antioxidants (4010), ketamam amine antioxidative agent ( RD) 2.5 parts, 0.5 parts of sulfur, 0.6 parts of 2-thiol-phrobenzene thiazole, 1.0 parts of disulfurized diphenyl thiazole, N-cyclohexyl-2-benzothiazolia sulfonamide 1.6 parts.

[0038]The method of high hardness shock absorbing rubber is: mixing each component is uniform, obtaining a mixture; automatically feeding the mixture through the injection molding machine into the machine injection, and then via the mold injection The mouth and the flow path injected the plastici...

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