CN102850701A - Fluorine rubber compounded rubber with high-temperature flexibility and vulcanization process of fluorine rubber compounded rubber - Google Patents

Abstract

The invention relates to fluorine rubber compounded rubber with high-temperature flexibility. The fluorine rubber compounded rubber comprises the following raw materials in parts by weight: 100 parts of fluorine rubber raw rubber, 8 to 12 parts of magnesium oxide, 2 to 4 parts of fluorine rubber bisphenol vulcanization auxiliaries LCA, 1.5 to 6 parts of iron oxide red, 15 to 18 parts of barium sulfate, 0 to 0.5 parts of silane coupling agents A-151, 0 to 1.0 part of rhein 54, 0 to 1.0 part of Brazil palm wax, 3 to 4 parts of bisphenol AF-50 and 1.5 to 2.0 parts of accelerant BPP-33. Compared with the common compounded rubber, the recipe provided by the invention has the advantages that the hand feeling flexibility at high temperature is good, toughness is realized and crudeness is avoided, the tearing is difficult during demolding, and the fluorine rubber compounded rubber with different vulcanization speeds can be obtained through different-weight regulation of AF-50 and BPP-33.

Description

A kind of have the flexible fluororubber compounded rubber of high temperature and a sulfuration process thereof

Technical field

The present invention relates to a kind of viton and preparation method thereof, especially relate to a kind of the have flexible fluororubber compounded rubber of high temperature and sulfuration process thereof.

Background technology

Former viton high temperature bottom knockout process when producing many lip mouth oil seals is easily torn.Lack flexible dry and astringent stiff intensity under the feel rubber high temperature low, in complicated structure, easily tear during the demoulding.Chinese patent 200910223537.3 discloses a kind of fluorocarbon rubber with easy demoulding and tear resistance and preparation method thereof.Although the part of the technical scheme in this patent has solved the problems referred to above, it still has the low problem of the flexible dry and astringent stiff intensity of shortage under the feel rubber high temperature.

Summary of the invention

First technical problem that the present invention will solve provides a kind of flexible fluororubber compounded rubber of high temperature that has; This fluororubber compounded rubber has overcome the shortcoming that the high temperature bottom knockout is easily torn when producing many lip mouth oil seals.Improve the snappiness when the condition of high temperature, be beneficial to the production of many lips FKM goods.

Second technical problem that the present invention will solve provides a kind of sulfuration process with the flexible fluororubber compounded rubber of high temperature.

For solving above-mentioned first technical problem, the present invention has the flexible fluororubber compounded rubber of high temperature, comprises the raw material of following parts by weight:

100 parts of fluorine glue rubbers, 8～12 parts in magnesium oxide,

2～4 parts of viton bis-phenol vulcanization aid LCA, 1.5～6 parts of iron oxide reds,

15～18 parts in barium sulfate, silane coupling A-151 0～0.5 part,

54 0～1.0 parts in Lay mattress, 0～1.0 part of carnauba wax,

Bisphenol AF-50 3～4 part, 1.5～2.0 parts of accelerant B PP-33.

Preferably, described magnesium oxide is extra light calcined magnesia MgO-150, and for example Japanese consonance company produces.

For solving above-mentioned second technical problem, a kind of sulfuration process with the flexible fluororubber compounded rubber of high temperature of the present invention comprises the steps:

1) sulfurizing mould cleans up, and is preheated to curing temperature;

2) with the cotton brush of releasing agent 9019 immersions, then dry when cotton brush extremely drips without water droplet and end.

3) use cotton brush and carefully smear mold cavity, and then heating mould is to curing temperature;

4) according to normal process sulfuration, carefully smear mold cavity with above-mentioned brush before every fire sulfuration, cotton is brushed every usefulness once need soak the releasing agent system of again drying in the air again.

The common rubber unvulcanizate of recipe ratio of the present invention is flexible, the flexible of feel at high temperature, and not stiff, the demoulding is difficult for tearing; Can obtain the fluorine glue rubber unvulcanizate of different vulcanization rates by the adjustment to AF-50 amounts different from BPP-33.

Embodiment

Embodiment 1

The present invention has the flexible fluororubber compounded rubber of high temperature, comprises the raw material of following parts by weight:

100 parts of fluorine glue rubbers, 8 parts of extra light calcined magnesias,

2 parts of viton bis-phenol vulcanization aid LCA, 1.5 parts of iron oxide reds,

15 parts in barium sulfate, bisphenol AF-50 3～4 part,

1.5～2.0 parts of accelerant B PP-33.

A kind of sulfuration process with the flexible fluororubber compounded rubber of high temperature comprises the steps:

1) sulfurizing mould cleans up, and is preheated to curing temperature;

2) with the cotton brush of releasing agent 9019 immersions, then dry when cotton brush extremely drips without water droplet and end.

3) use cotton brush and carefully smear mold cavity, and then heating mould is to curing temperature;

4) according to normal process sulfuration, carefully smear mold cavity with above-mentioned brush before every fire sulfuration, cotton is brushed every usefulness once need soak the releasing agent system of again drying in the air again.

Embodiment 2

Repeat embodiment 1, its difference is:

100 parts of fluorine glue rubbers, 12 parts in magnesium oxide,

4 parts of viton bis-phenol vulcanization aid LCA, 6 parts of iron oxide reds,

18 parts in barium sulfate, silane coupling A-151 0.5 part,

54 1.0 parts in Lay mattress, 1.0 parts of carnauba waxs,

Bisphenol AF-50 4 part, 2.0 parts of accelerant B PP-33.

Embodiment 3

Repeat embodiment 1, its difference is:

8 parts of 100 parts of extra light calcined magnesias of fluorine glue rubber

3 parts of viton bis-phenol vulcanization aid LCA, 3 parts of iron oxide reds

0.3 part of 16 parts of A-151 of barium sulfate

0.7 part of 54 0.8 parts of carnauba wax of Lay mattress

2.0 parts of bisphenol AF-50 3.5 part accelerant B PP-33.

The product of the embodiment of the invention 3 is detected, and performance data sees table:

Comparative Examples 1:(200910223537.3 embodiment 3 products)

Comparative Examples 2: former common fluorine glue

Produce tractors with 200 of the many lip mouth oil seals of certain specification, tear the product fraction defective that causes and see the following form:

To sum up, the common rubber unvulcanizate of recipe ratio of the present invention is flexible, the flexible of feel at high temperature, and not stiff, the demoulding is difficult for tearing; Can obtain the fluorine glue rubber unvulcanizate of different vulcanization rates by the adjustment to AF-50 amounts different from BPP-33.

Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give all embodiments exhaustive.Everyly belong to the row that apparent variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.

Claims (3)

1. have the flexible fluororubber compounded rubber of high temperature, it is characterized in that, comprise the raw material of following parts by weight:

100 parts of fluorine glue rubbers, 8～12 parts in magnesium oxide,

2～4 parts of viton bis-phenol vulcanization aid LCA, 1.5～6 parts of iron oxide reds,

15～18 parts in barium sulfate, silane coupling A-151 0～0.5 part,

54 0～1.0 parts in Lay mattress, 0～1.0 part of carnauba wax,

Bisphenol AF-50 3～4 part, 1.5～2.0 parts of accelerant B PP-33.

2. fluororubber compounded rubber according to claim 1 is characterized in that, preferably, described magnesium oxide is extra light calcined magnesia MgO-150.

3. a sulfuration process that has as claimed in claim 1 the flexible fluororubber compounded rubber of high temperature is characterized in that, comprises the steps:

1) sulfurizing mould cleans up, and is preheated to curing temperature;

2) with the cotton brush of releasing agent 9019 immersions, then dry when cotton brush extremely drips without water droplet and end.

3) use cotton brush and carefully smear mold cavity, and then heating mould is to curing temperature;

4) according to normal process sulfuration, carefully smear mold cavity with above-mentioned brush before every fire sulfuration, cotton is brushed every usefulness once need soak the releasing agent system of again drying in the air again.