Material based on a caoutchouc-type mixture for producing hard rubber, method of using such material for producing engine components, and engine components manufactured from such material
AssigneeSemperit Aktiengesellschaft
InventorsJosef Affenzeller, Wolf-Dieter Jost
Life of this patent
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Abstract
Into a material based on a caoutchouc-type or caoutchouc-containing mixture for producing hard rubber, there is incorporated a pre-mix containing high-strength organic fibers and a liquid hardenable plastic material. The high-strength and temperature resistant material thus obtained is particularly suitable for the attenuation of noise in combustion engines when heavy-weight fillers are also added to such material. Engine components like, for example, valve covers, timing gear covers and oil pans can be manufactured from this material.
Claims15
A material based on a rubber mixture for producing hard rubber and comprising:
- a rubber mixture comprising a preselected synthetic nitrile rubber, another synthetic diene rubber or natural rubber conjointly with vulcanizing adjuvants and a pre-mix;
- said pre-mix containing a mixture of high-strength organic fibers and a liquid hardenable plastic material;
- said high-strength organic fibers being selected from high-strength organic fibers which withstand, to a large extent, the shearing stresses occurring during the rubber mixing operations;
- said high-strength organic fibers being present in an amount resulting in a proportion in the range of about 10 to about 100 parts per 100 parts of said preselected rubber in said rubber mixture;
- said liquid hardenable plastic material containing a cross-linking agent for hardening said liquid hardenable plastic material;
- said liquid hardenable plastic material being selected from the group consisting of liquid phenolic resin, liquid polyester resin, liquid epoxide resin and a mixture of at least two of the aforementioned resins;
- and
- said liquid hardenable plastic resin being present in an amount resulting in a proportion in the range of about 20 to about 200 parts per 100 parts of said preselected rubber in said rubber mixture.
A material based on a rubber mixture for producing hard rubber and comprising:
- a rubber mixture comprising a preselected rubber conjointly with vulcanizing adjuvants and a premix;
- said preselected rubber being selected from the group consisting of nitrile rubber, natural rubber, and a mixture of nitrile rubber and natural rubber;
- said pre-mix containing a mixture of high-strength organic fibers and a liquid hardenable plastic material;
- said high-strength organic fibers being selected from the group consisting of aramid fibers, polyester fibers and poly-acrylonitrile fibers;
- said high-strength organic fibers being present in an amount resulting in a proportion in the range of about 10 to about 100 parts per 100 parts of said preselected rubber contained in said rubber mixture;
- said liquid hardenable plastic material containing a cross-linking agent for hardening said liquid hardenable plastic material;
- said liquid hardenable plastic material being selected from the group consisting of liquid phenolic resin, liquid polyester resin, liquid epoxide resin and a mixture of at least two of the aforementioned resins;
- and
- said liquid hardenable plastic resin being present in an amount resulting in a proportion in the range of about 20 to about 200 parts per 100 parts of said preselected rubber contained in said rubber mixture.
Dependencies are inferred from the claim text.