High strength heat resistant rubber composition and process for producing high strength heat resistant rubber product
AssigneeKyoichi Wada
InventorsKyoichi Wada, Tianning Ding
Life of this patent
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Abstract
According to the invention, a high strength heat resistant rubber composition having both excellent strength and heat resistance, comprising: 80 to 85 parts by mass of a rubber base material; 5 to 11 parts by mass of attapulgite; 40 to 50 parts by mass of a linear low-density polyethylene; 4 to 6 parts by mass of a ceramic powder; 2 to 6 parts by mass of a cross-linking agent; 5 to 9 parts by mass of a filler; 5 to 9 parts by mass of a cross-linking aid; 8 to 13 parts by mass of rosin; 12 to 16 parts by mass of bismaleimide; and 7 to 12 parts by mass of yttrium oxide and a process for producing a high strength heat resistant rubber product using the composition are provided.
Claims12
A heat resistant rubber composition, comprising:
- 80 to 85 parts by mass of a rubber base material;
- 5 to 11 parts by mass of attapulgite;
- 40 to 50 parts by mass of a linear low-density polyethylene;
- 4 to 6 parts by mass of a ceramic powder;
- 2 to 6 parts by mass of a cross-linking agent;
- 5 to 9 parts by mass of a filler;
- 5 to 9 parts by mass of a cross-linking aid;
- 8 to 13 parts by mass of rosin;
- 12 to 16 parts by mass of bismaleimide;
- and
- 7 to 12 parts by mass of yttrium oxide.
A process for producing a heat resistant rubber composition comprising the steps of:
- a primary kneading step of supplying and mixing 80 to 85 parts by mass of a rubber base material, 5 to 11 parts by mass of attapulgite, 40 to 50 parts by mass of a linear low-density polyethylene and 4 to 6 parts by mass of a ceramic powder in a mixer to obtain a primary kneaded product by primary kneading;
- a secondary kneading step of mixing 2 to 6 parts by mass of a cross-linking agent, 5 to 9 parts by mass of a filler, 5 to 9 parts by mass of a cross-linking aid, 8 to 13 parts by mass of rosin, 12 to 16 parts by mass of bismaleimide and 7 to 12 parts by mass of yttrium oxide into the primary kneaded product to obtain a heat resistant rubber kneaded product;
- and
- a forming step of forming the heat resistant rubber kneaded product obtained in the secondary kneading step to obtain a rubber product.
Dependencies are inferred from the claim text.