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Modified fluororubber compounded stock and preparation method thereof

A technology for modifying fluororubber and fluororubber raw rubber, which is applied in the field of rubber compound preparation, which can solve the problem that the wear resistance and sealing performance need to be improved, the compression set of fluororubber is not mentioned, and the resistance of fluororubber is not mentioned. Grinding performance and other issues, to achieve good processability, improve mechanical properties, the effect of simple method

Inactive Publication Date: 2015-04-29
DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Acron abrasion of the existing fluorine rubber compound is generally greater than 0.8cm 3 , the compression set is also above 20% (200℃×70h, 25% compression rate), and the wear resistance and sealing performance need to be improved
Chinese patent application CN103756201A improves the wear resistance of fluorine rubber by adding nano-silicon nitride, so that the minimum wear of Akron reaches 1.15cm 3 , but it does not mention the compression set of fluororubber
In the Chinese patent CN101875750B, two kinds of Mooney value binary fluororubber and ternary fluororubber are blended to improve the compression set of fluororubber, which can reach a minimum of 15%, but the blending of ternary fluororubber will greatly increase the cost , which reduces the stability of the process, and does not mention the wear resistance of fluororubber

Method used

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  • Modified fluororubber compounded stock and preparation method thereof
  • Modified fluororubber compounded stock and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Configure the raw materials according to the formula in Table 1.

[0027] The operation steps are as follows: add fluororubber raw rubber to the open mill, roll temperature 40-50°C, roll speed 18-22rpm, adjust the roll distance, subject to the accumulation of rubber between the two rolls; add additives in order: ① Processing aid stearic acid, wear-resistant additive nano-silicon carbide, ② magnesium oxide, calcium hydroxide, ③ thermal cracking carbon black, high wear-resistant furnace black, ④ vulcanizing agent bisphenol AF, vulcanizing aid BPP; every step After the powder is completely eaten, cut 5 triangle buns with a knife, and roll for 1 minute. After the rubber is mixed evenly, the sheet will be thinned out 12 times, and the sheet will be left at room temperature for 18 hours; the temperature of the roll is controlled at 55 ° C, and the roll distance is 0.4 mm The roller speed is 24rpm, and the triangular bag thin pass is carried out for 12 times, and then the roll...

Embodiment 2

[0030] Configure the raw materials according to the formula in Table 1.

[0031] Operation steps Except that the processing aid is calcium stearate, and the wear-resisting additive is molybdenum selenide micropowder. After eating the powder, open 3 triangular bags with a knife, and roll for 2 minutes. It is the same as embodiment 1 except that it is 0.3 mm.

[0032] The performance test items are the same as in Example 1, and the results are shown in Table 2.

Embodiment 3

[0034] Configure the raw materials according to the formula in Table 1.

[0035] The operating steps are the same as in Example 1, except that the processing aid is carnauba wax, and a triangular bag is opened after the powder is completely eaten.

[0036] Performance test item is the same as embodiment 1, and the results are shown in Table 2

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Abstract

The invention discloses a modified fluororubber compounded stock. The modified fluororubber compounded stock comprises the following components in parts by weight: 100 parts of raw rubber of fluororubber, 10-30 parts of thermal cracking carbon black, 10-30 parts of furnace black with high wear resistance, 2-8 parts of wear-resistant additives, 0.2-0.6 part of processing additives, 2-4 parts of active magnesium oxide, 5-9 parts of calcium hydroxide, 1.5-3.0 parts of bisphenol A and 0.4-0.8 part of benzyl triphenylphosphonium chloride. The invention further discloses a preparation method of the compounded stock, the hardness of the obtained high-strength, high-elasticity and oil-resistant fluororubber compounded stock after vulcanization can be controlled within 70-85, and the modified fluororubber compounded stock has the advantages of good processability, low cost, simple method and easiness in industrialization.

Description

technical field [0001] The invention belongs to the field of rubber compound rubber preparation, and in particular relates to the preparation of modified fluorine rubber compound rubber. Background technique [0002] Fluorine rubber refers to a synthetic polymer elastomer with fluorine atoms attached to the carbon atoms of the main chain or side chain. This type of polymer material has excellent heat resistance, weather resistance, ozone resistance, oil resistance, and chemical resistance. Characteristic, low gas permeability, and self-extinguishing rubber, its comprehensive performance is the best among all synthetic rubbers. With the development of the automobile industry and highways, the driving speed of automobiles has increased significantly, which has led to a sharp increase in the operating temperature of oil seals. Therefore, the quality requirements for rubber seals matched with automobiles have also increased accordingly. The use of fluorine rubber to make oil sea...

Claims

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Application Information

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IPC IPC(8): C08L27/12C08K13/02C08K3/04C08K3/22C08K5/13C08K5/50C08K5/098B29B7/52B29B7/88
CPCC08K13/02B29B7/526B29B7/88C08K3/04C08K3/22C08K3/30C08K3/34C08K5/09C08K5/098C08K5/13C08K2003/2206C08K2003/222C08K2201/011C08K2201/014C08L27/12C08L91/06C08L71/00
Inventor 杨策宇汤诚陆翠方
Owner DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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