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High-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip and preparation method thereof

A neoprene rubber and high temperature resistant technology, applied in the field of wiper strips, can solve the problems of strip strength, flexibility and wiper characteristics loss, the inability of wiper strips to be used for a long time, shortening the service life of wipers, etc., and achieve good mixing and extrusion characteristics, good thermal stability and aging resistance, little effect of hardness change

Pending Publication Date: 2020-07-17
JIANGSU YUNRUI AUTOMOBILE ELECTRIC SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wiper rubber strips are mostly made of natural rubber and various synthetic rubbers. In the complex natural environment of sunshine, rain, high and low temperature alternating for a long time, especially in the continuous high temperature environment in southern my country in summer, the rubber strips age quickly. The strength, flexibility, and wiping characteristics of the rubber strip are greatly lost, which shortens the service life of the wiper and greatly affects the wiping quality and driving safety.
At present, the wiper rubber strip made of ordinary neoprene still cannot be used for a long time in a high temperature environment. Therefore, the formula must be improved to meet the high temperature aging resistance requirements of the wiper rubber strip

Method used

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  • High-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip and preparation method thereof
  • High-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip and preparation method thereof
  • High-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step A: After masticating 100 parts of Baypren 110 neoprene, carry out pressure mixing with 2 parts of DDA, 2 parts of DTPD, 1 part of microcrystalline wax, and 5 parts of DOS, and then mix 15 parts of N550, 15 parts of N774, and 30 parts Add N990, 1 part of SA and 4 parts of magnesium oxide into the barrel of the internal mixer for internal mixing, put down the pressure hammer and mix for 2 minutes, when the temperature reaches 90 ° C, add 5 parts of zinc oxide and 2.5 parts of TMU densely Refining for 4 minutes, when the temperature reaches 120°C, discharge the lump rubber, then move the lump rubber to the open mill, and refine in the open mill, with a thickness of 2mm. The gap between the two rollers of the open mill is adjusted to the minimum distance, and the thin pass is carried out 3 times, which takes a total of 3 minutes, and then the refined rubber is put into the tablet machine, and pressed into a suitable size (length, Thickness, width) of the film, parked f...

Embodiment 2

[0029] Step A: After masticating 100 parts of Baypren 110 neoprene, carry out pressure banburying with 2.5 parts of DDA, 1 part of DTPD, 1.5 parts of microcrystalline wax and 6 parts of DOS, and then mix 10 parts of N550, 5 parts of N774, 40 parts Add N990, 1.5 parts of SA and 4 parts of magnesium oxide into the barrel of the internal mixer for banburying, put down the pressure hammer and mix for 3 minutes, when the temperature reaches 90°C, add 5 parts of zinc oxide and 2 parts of TMU successively Refining for 5 minutes, when the temperature reaches 140°C, discharge the lump rubber, then move the lump rubber to the open mill, and refine in the open mill, with a thickness of 5mm. The gap between the two rollers of the mill is adjusted to the minimum distance, and the thin pass is carried out 3 times, which takes a total of 6 minutes, and then the refined rubber is put into the tablet machine, and pressed into a suitable size (length, Thickness, width) of the film, parked for u...

Embodiment 3

[0035] Step A: After masticating 100 parts of Baypren 110 neoprene, carry out pressure mixing with 0.25 parts of DDA, 0.1 parts of DTPD, 0.15 parts of microcrystalline wax, and 5 parts of DOS, and then mix 5 parts of N550, 2 parts of N774, and 18 parts Add N990, 0.5 parts of SA and 2 parts of magnesium oxide into the barrel of the internal mixer for internal mixing, put down the pressure hammer and mix for 2 and a half minutes. When the temperature reaches 90°C, add 2 parts of zinc oxide and 2 parts of TMU internal mixing for 4 and a half minutes, when the temperature reaches 100°C, discharge the lump rubber, then move the lump rubber to the open mixer, and refine it in the open mixer, the thickness is 3mm, and manually carry out triangular bag refining for 5 Once, adjust the gap between the two rollers of the mill to the minimum distance, and carry out thin pass 3 times, which takes a total of 4 minutes, and then put the refined rubber into the tablet machine, and press it int...

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Abstract

The invention discloses a high-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip and a preparation method thereof. The high-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip comprises chloroprene rubber, carbon black, an anti-aging agent, a plasticizer, a processing aid, an accelerant, zinc oxide and magnesium oxide. The preparation method comprises the following steps: plastifying chloroprene rubber, pressurizing and banburying with the anti-aging agent and the plasticizer, adding carbon black, the processing aid and magnesium oxide, carrying out internal mixing, adding zinc oxide and the accelerant, carrying out internal mixing, discharging the rubber material when the temperature reaches 100-150 DEG C, carrying out re-mixing on an open mill for 3-6 minutes, pressing into a rubber sheet with an appropriate size by using a tablet press, standing for later use, putting the rubber sheet obtained in the step A into a special mold forthe windshield wiper rubber strip of a compression molding machine, molding for 3-10 minutes at the molding temperature of 150-180 DEG C to obtain a semi-finished product of the chloroprene rubber windshield wiper rubber strip, and performing post-treatment, cleaning, cutting, plasma treatment, spraying and other processes on the semi-finished windshield wiper rubber strip obtained in the step B to obtain the finished chloroprene rubber windshield wiper rubber strip.

Description

technical field [0001] The invention relates to a wiper rubber strip, in particular to a high-temperature aging-resistant neoprene wiper rubber strip and a preparation method thereof. Background technique [0002] The wiper is an accessory used to scrape off water stains and dust on the glass on the car. The quality of the wiper strip will directly affect the wiping quality of the entire wiper. Wiper rubber strips are mostly made of natural rubber and various synthetic rubbers. In the complex natural environment of sunshine, rain, high and low temperature alternating for a long time, especially in the continuous high temperature environment in southern my country in summer, the rubber strips age quickly. The strength, flexibility, and wiping characteristics of the rubber strip are greatly lost, thereby shortening the service life of the wiper, and greatly affecting the wiping quality and driving safety. At present, the wiper rubber strip made of ordinary neoprene still canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L91/06C08K13/02C08K3/04C08K5/18C08K5/11C08K5/09C08K5/405C08K3/22B29B7/74B29C51/10B29C51/46B29C69/00
CPCC08L11/00B29C69/001B29C51/10B29C51/46B29B7/7495C08L2201/08C08K2201/014C08K2003/2296C08K2003/222C08L91/06C08K13/02C08K3/04C08K5/18C08K5/11C08K5/09C08K5/405C08K3/22
Inventor 付红玲黎园李金春孙向南王辉吴明生
Owner JIANGSU YUNRUI AUTOMOBILE ELECTRIC SYST CO LTD
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