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Method for producing composite layer base material of carpet sound insulating mat for automobile

A production method and technology of sound-insulating pads, which are applied in the field of production of composite layer substrates for automotive carpet sound-insulating pads, can solve problems such as increased mold costs and changes in material surface morphology, and achieve good bending resistance, increased bonding strength, and avoid The effect of investing in building

Inactive Publication Date: 2018-11-27
陈卫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former will increase the cost of the mold, while the latter requires large-scale hot-pressing equipment and will easily lead to changes in the surface morphology of the material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: A kind of production method of the base material of composite layer of carpet sound-insulating mat for automobiles of the present invention adopts the following process steps:

[0016] The EPDM surface blanket among the present invention is prepared by reclaimed materials, and the main component is EPDM reclaimed fragments purchased from the market, with a tear strength > 100N; The weight percent concentration of the butadiene rubber solution is 40%, and the chloroprene rubber has a certain degree of ductility, and the oil resistance and heat resistance are also relatively outstanding.

[0017] Properly clean the surface of the EPDM blanket with water to remove the dust and grease on the surface during production and transportation. After the water evaporates and dries up, emboss on the surface of EPDM rubber to form lines, the lines are square, and the bonding area to be bonded is polished with a grinding wheel; the neoprene solution is evenly sprayed on ...

Embodiment 2

[0019] When the temperature is low, chloroprene rubber with a certain polarity can only be bonded to the surface of EPDM mainly by van der Waals force. The EPDM used in the present invention is a recycled material with certain plasticity, so after it is heated to a temperature close to the melting temperature or a processable temperature, the long molecular chains in the neoprene adhesive can penetrate into the EPDM base material, which is expected to increase Adhesion of EPDM layer. In this example, the same sample preparation method as in Example 1 was adopted, and the adhesive was Tai A stick DC7000 neoprene solution, and the weight percent concentration of the neoprene solution was 40%. The glue spraying density reaches about 70.8g / m2, and the amount of neoprene glue applied is: 0.005~0.3mg / mm2; let it dry for 2.5 minutes, let the solvent fully evaporate, and the neoprene glue can reach the maximum bonding ability. Use a pressure of 0.01-0.02MPa to apply pressure to the b...

Embodiment 3

[0021] In this example, the same sample preparation method as in Examples 1 and 2 was adopted, and the adhesive was Tai A stick DC7000 neoprene solution, and the weight percent concentration of the neoprene solution was 40%. Evenly spray the formulated adhesive neoprene solution on the EPDM surface blanket to be bonded. In this example, the spray density is about 69.1g / m2, and the application of the neoprene solution The amount is: 0.005~0.3mg / mm2. Leave it in the air for 3 minutes to allow the solvent to fully evaporate, and the bonding ability of the neoprene will reach the maximum. Finally, stick two pieces of EPDM blankets coated with glue together, and apply a pressure of 0.01 to 0.02 MPa to the bonded part for 25 seconds to remove the air between the bonded layers and ensure the bonded surface is secure. Good fit. According to the principle of time-temperature equivalence, the effect of increasing the drying temperature is the same as increasing the drying temperature....

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PUM

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Abstract

The invention relates to a method for producing a composite layer base material of a carpet sound insulating mat for an automobile, in particular to a composite layer base material which can be applied to a composite layer for producing the carpet sound insulating mat for the automobile. The method is characterized by comprising the following steps: taking an ethylene-propylene-diene monomer (EPDM) rubber blanket as a bonding base material, and embossing in a bonding area on the surface of the EPDM rubber blanket; uniformly coating a neoprene solution on embossed lines, and adhering two EPDM rubber blankets with surfaces coated with the neoprene solution after airing; placing the two EPDM rubber blankets into a press for pressing; and then placing the two EPDM rubber blankets into a dryingoven for heating and warming, and taking out; and cooling and molding the two EPDM rubber blankets to obtain a finished product. The method provided by the invention is low in production process andequipment requirements, and avoids investment and establishment for large equipment, and investment in repeated modification of molds. The finished product has very high resistance to high and low temperatures, aging resistance, and good bending resistance, the bonding strength is greatly improved, and the maximum peel strength can be 15 times an original value.

Description

technical field [0001] The invention relates to a production method for a base material of a composite layer of a carpet sound-insulating pad for automobiles, in particular, it can be applied to making a composite layer of an automobile carpet and sound-insulating pad. Background technique [0002] Rubber, as a polymer compound with extremely high molecular weight, has high elasticity characteristics that are lacking in general materials. It has small elastic modulus, large elongation and deformation, can maintain high elasticity in a wide temperature range, and has a certain hysteresis effect on alternating and vibration stress and fluctuations, so it has the function of sound insulation and shock absorption. In addition, its electrical The advantages of insulation, light weight, and good flexibility have also promoted the development of the rubber industry and the popularization of its products. [0003] Among them, ethylene-propylene-diene monomer (EPDM), which introduce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/10B32B37/12B32B38/16B32B38/06B60N3/04
CPCB32B37/10B32B37/1284B32B38/06B32B38/164B60N3/042
Inventor 陈伟
Owner 陈卫
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