Application of physical foaming agent and chemical foaming agent in skylight sealing strip non-porous rubber microcellular foaming

A technology of chemical foaming agent and physical foaming agent, which is applied in the field of microcellular foaming of compact glue for skylight sealing strips, and achieves the effects of simple operation, easy production, and reduced production costs

Inactive Publication Date: 2017-09-15
WUHAN YINAN RUBBER & PLASTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But about the blowing agent composition that a kind of physical blowing agent of the present invention and chemical blowing agent are formed and its application to skylight weatherstrip dense glue microcellular foaming has not yet been reported

Method used

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  • Application of physical foaming agent and chemical foaming agent in skylight sealing strip non-porous rubber microcellular foaming
  • Application of physical foaming agent and chemical foaming agent in skylight sealing strip non-porous rubber microcellular foaming
  • Application of physical foaming agent and chemical foaming agent in skylight sealing strip non-porous rubber microcellular foaming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

3.5

[0037] In the first step, each component is weighed according to the ratio.

[0038] The second step is the rubber compounding process. One-stage mixing: first press and mix EPDM raw rubber, then add zinc oxide, stearic acid, polyethylene glycol, carbon black, light calcium carbonate, white oil and mix evenly, and then discharge the rubber. At 145°C, the film is discharged, cooled and parked. Two-stage mixing: first mix the first rubber after being parked for 24 hours, then add calcium oxide, vulcanization system, physical foaming agent, chemical foaming agent for mixing, and control the glue discharge temperature below 100℃. The distance is 1-1.5mm to prevent damage to the molecular structure of the blowing agent.

[0039] The third step is the extrusion vulcanization process. First pass the product through the extruder, the temperature of the extruder is controlled at 60°C, and the temperature of the rubber at the exit of the extruder is controlled at 70-90°C. Then throu...

Embodiment 2

3

[0042] In the first step, each component is weighed according to the ratio.

[0043] The second step is the rubber compounding process. One-stage mixing: first press and mix EPDM raw rubber, then add zinc oxide, stearic acid, polyethylene glycol, carbon black, light calcium carbonate, white oil and mix evenly, and then discharge the rubber. At 155°C, the film is discharged, cooled, and parked. Two-stage mixing: first mix the first rubber after being parked for 24 hours, then add calcium oxide, vulcanization system, physical foaming agent, chemical foaming agent for mixing, and control the glue discharge temperature below 100℃. The distance is 1-1.5mm to prevent damage to the molecular structure of the blowing agent.

[0044] The third step is the extrusion vulcanization process. First pass the product through the extruder, the temperature of the extruder is controlled at 75°C, and the temperature of the rubber at the exit of the extruder is controlled at 70-90°C. Then throug...

Embodiment 3

3.6

[0047] In the first step, each component is weighed according to the ratio.

[0048] The second step is the rubber compounding process. One-stage mixing: first press and mix EPDM raw rubber, then add zinc oxide, stearic acid, polyethylene glycol, carbon black, light calcium carbonate, white oil and mix evenly, and then discharge the rubber. At 150°C, the film is discharged, cooled, and parked. Two-stage mixing: first mix the first rubber after being parked for 24 hours, then add calcium oxide, vulcanization system, physical foaming agent, chemical foaming agent for mixing, and control the glue discharge temperature below 100℃. The distance is 1-1.5mm to prevent damage to the molecular structure of the blowing agent.

[0049] The third step is the extrusion vulcanization process. First pass the product through the extruder, the temperature of the extruder is controlled at 75°C, and the temperature of the rubber at the exit of the extruder is controlled at 70-90°C. Then thro...

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Abstract

The invention relates to an automobile skylight sealing strip non-porous rubber microcellular foaming rubber. The rubber is made from EPDM raw rubber, carbon black, zinc oxide, stearic acid, light calcium carbonate, white oil, polyethylene glycol, calcium oxide, a vulcanization system, a physical foaming agent and a chemical foaming agent. The invention also provides a foaming agent composition, an application thereof, and a preparation method of the microcellular foaming rubber. The foaming agents are used to reduce the density of the rubber by 15% or above, makes the rubber meet the sealing strip weight requirement of automobile lightweighting, energy saving and consumption reduction, realizes simple operation and reduces the production cost.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to a foaming agent composition composed of a physical foaming agent and a chemical foaming agent and its application to the microcellular foaming of a dense glue for a sunroof sealing strip. Background technique [0002] In recent years, the environmental protection technology of automobiles has been continuously developed, and the requirements for the lightweight, energy saving and emission reduction of automobiles have become higher and higher. The lightweight of the car is to reduce the quality of the car as much as possible under the premise of ensuring the strength and safety of the car, thereby improving the power of the car, reducing fuel consumption, and reducing exhaust pollution. Experiments have proved that the quality of the car is reduced by half, and the fuel consumption will also be reduced by nearly half. Due to the needs of environmental protection and energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L71/02C08L91/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/26C08J9/10C08J9/14
CPCC08L23/16C08J9/105C08J9/147C08J2203/04C08J2203/144C08J2203/184C08J2205/044C08J2323/16C08J2471/02C08K2003/2296C08K2003/265C08L2203/14C08L2205/03C08L71/02C08L91/06C08K13/02C08K3/04C08K3/22C08K5/09C08K3/26
Inventor 韩杰纪荣华金涛陆淑美
Owner WUHAN YINAN RUBBER & PLASTIC TECH CO LTD
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