Claims
- 1. In a belt having a load-carrying section provided with load-carrying cords, an improved cushion having a high strength bond with said cords embedded therein, said cushion being formed of a modified rubber blend, comprising:
- (a) about 100 parts by weight chloroprene rubber,
- (b) about 0.1 to 5.0 phr of silane coupling agent,
- (c) about 10-60 phr silica,
- (d) about 0.3 phr sulphur containing cross-linking agent, and
- (e) about 2-60 phr carbon black.
- 2. In a belt having a compression section, a load-carrying cushion having load-carrying cords embedded therein, and a tension section, said cushions being formed of modified rubber blend comprising:
- (a) about 100 parts by weight styrene-butadiene rubber
- (b) about 0.1 to 5.0 phr of silane coupling agent,
- (c) about 10-60 phr silica,
- (d) elemental sulphur cross-linking agent, and
- (e) about 2-60 phr carbon black.
- 3. The belt structures of claim 1 wherein said cross-linking agent is 2-mercaptoimidazoline.
- 4. The belt structures of claims 1 or 2 wherein said silane coupling agent is Vinyl-Tris (.beta.-Methoxy Ethoxy)Silane, .gamma.-Glysidoxypropyltrimethoxy Silane, N-.beta.-(Aminoethyl).gamma.-Aminopropyltrimethoxy Silane, .gamma.-Mercaptopropyltrimethoxy Silane, or Bis-(3-[Triethoxisilyl]-Propyl-)Tetrasulfane.
- 5. The belt structures of claims 1 or 2 wherein the phr of said silane coupling agent is in the range of about 0.3 to 2.0 phr.
- 6. The belt structures of claims 1 or 2 wherein the phr of said silica is in the range of about 20-45 phr.
- 7. The belt structures of claims 1 or 2 wherein the phr of said carbon black is in the range of about 10-40 phr.
- 8. The belt structures of claims 1 or 2 wherein said belt is a V-belt.
- 9. The belt structures of claims 1 or 2 wherein said belt is a raw edge belt.
- 10. The belt structures of claims 1 or 2 wherein said belt is a wrapped belt.
- 11. The belt structures of claims 1 or 2 wherein said belt defines a compression section having a plurality of grooves extending transversely to the longitudinal extent of the belt.
- 12. The belt structures of claims 1 or 2 wherein said belt includes at least one section provided with distributed transversely extending short reinforcing fibers.
- 13. The belt structures of claims 1 or 2 wherein said belt is a banded belt having a plurality of belt elements defined at least in part by said blend.
Priority Claims (1)
Number |
Date |
Country |
Kind |
54-145280 |
Nov 1979 |
JPX |
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Parent Case Info
This application is a continuation of application Ser. No. 203,716, filed Nov. 3, 1980, now abandoned.
US Referenced Citations (15)
Foreign Referenced Citations (4)
Number |
Date |
Country |
1439247 |
Jun 1976 |
GBX |
1438355 |
Jun 1976 |
GBX |
1524077 |
Sep 1978 |
GBX |
2038341 |
Jul 1980 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Derwent Abst. 37666/E19, (5-1982), Mitsuboshi Belting KK, (EP-50993). |
Continuations (1)
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Number |
Date |
Country |
Parent |
203716 |
Nov 1980 |
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