Joint glue for corner part of sealing strip for car door and preparation method
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A technology for automobile doors and sealing strips, applied in the field of rubber products, which can solve the problems of reducing shear stress, affecting the dispersion of rubber materials, and slipping
Active Publication Date: 2013-12-11
GREAT WALL MOTOR CO LTD
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Abstract
Description
Claims
Application Information
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Problems solved by technology
In order to ensure the cushioning effect and closing force when the car door is closed, the hardness of the rubber material needs to be controlled between 35 and 40 degrees. Paraffin oil will lead to low strength and poor physical and mechanical properties of the rubber compound; and slippage will occur due to the addition of a large amount of paraffin oil during mixing,
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0020] Example 1, raw materials were weighed according to the following parts by mass: 100 parts of EPDM K4869 (oil-extended 100PHR), 30 parts of EPDM 4045M, 3 parts of zinc oxide, 1 part of stearic acid, dispersant L- 24 1.5 parts, 2.5 parts of polyethylene glycol, 60 parts of FEF grade carbon black N550, 80 parts of light calcium carbonate, 40 parts of 300# paraffin oil, 0.8-1.6 parts of sulfur, 3-8 parts of hygroscopic agent GR, anti-scorch agent 0.2 parts of CTP, 1.2 parts of accelerator BZ, 0.5 parts of accelerator M, 0.8 parts of accelerator Na-22, and 0.2 parts of accelerator DTDM.
Embodiment 2
[0021] Example 2, raw materials were weighed according to the following parts by mass: 60 parts of EPDM K4869 (oil-extended 100PHR), 20 parts of EPDM 4045M, 5 parts of zinc oxide, 3 parts of stearic acid, dispersant L- 1 part of 24, 5 parts of polyethylene glycol, 70 parts of FEF grade carbon black N550, 20 parts of light calcium carbonate, 45 parts of 300# paraffin oil, 0.8 part of sulfur, 4 parts of hygroscopic agent GR, 0.1 part of anti-scorch agent CTP, Accelerator BZ 1.0 parts, accelerator M 0.7 parts, accelerator Na-22 0.2 parts, accelerator DTDM 0.6 parts.
Embodiment 3
[0022] Example 3, raw materials were weighed according to the following parts by mass: 120 parts of EPDM K4869 (oil-extended 100PHR), 50 parts of EPDM 4045M, 8 parts of zinc oxide, 2 parts of stearic acid, dispersant L- 24 2 parts, 3 parts of polyethylene glycol, 80 parts of FEF grade carbon black N550, 60 parts of light calcium carbonate, 70 parts of 300# paraffin oil, 1.6 parts of sulfur, 3 parts of hygroscopic agent GR, 0.5 parts of anti-scorch agent CTP, Accelerator BZ 1.6 parts, accelerator M 1.2 parts, accelerator Na-22 0.5 parts, accelerator DTDM 0.3 parts.
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PUM
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Abstract
The invention discloses joint glue for a corner part of a sealing strip for a car door and a preparation method. The joint glue adopts the technical scheme that the joint glue is prepared by the following materials in parts by mass: 100-160 parts of ethylene propylene diene terpolymer rubber K4869, 20-50 parts of ethylene propylene diene terpolymer rubber 4045M, 3-8 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of dispersant L-24, 2-5 parts of polyethylene glycol, 60-100 parts of FEF (Fast Extruding Furnace) level carbon black N550, 20-80 parts of light calcium carbonate, 40-70 parts of paraffin oil, 3-8 parts of moisture absorbent, 0.1-0.5 parts of anti-scorching agent, 0.8-1.6 parts of sulfur and 1.7-4.7 parts of accelerant. The mooney viscosity of the joint glue is increased to be 16; the tensile strength is improved to be 12.3MPa; a shearing force during mixing is increased obviously; the dispersity of a packing is improved; skidding during the mixing of the glue is precluded; and the production efficiency is improved.
Description
technical field [0001] The invention relates to a rubber product, in particular to a joint rubber material used at the corner of an automobile door sealing strip and a preparation method thereof. Background technique [0002] Automobile door seals are mainly used in gaps that need to be sealed, such as doors, windows, hatch covers, etc., in addition to playing a sealing role to prevent harmful substances such as wind and sand, rain, and dust from intruding into the interior and exterior of the car, and can also play a role in shock absorption, insulation Acoustic and decorative functions to improve the working life of auto parts and the comfort of the car. Due to the differences in the structure of different parts of the automobile body sheet metal, the cross-sectional structure materials of different parts of the automobile sealing strip are variable, especially the movable and fixed parts of the car doors and windows, as well as different parts such as corners, bends and s...
Claims
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Application Information
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