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Preparing method for acoustic insulating, damping and noise-decreasing sheets for car

A technology of damping and sheet materials, which is applied in the field of preparation of sound-insulating, damping and noise-reducing sheets for cars, to achieve the effects of widening the spectrum of noise-reducing and damping, improving the manufacturing level, and facilitating construction

Inactive Publication Date: 2006-11-08
HENKEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the original defects of the existing domestic vehicle barrier sheet construction methods, and provide a high-speed mixer to mix the modified functional granular raw materials such as polyethylene matrix resin and inorganic fillers. Then, the modified functional pellets are prepared through a twin-screw extrusion granulation unit, and the modified functional pellets are then passed through a sheet or plate extrusion production line to make a sound-insulating, damping, and noise-reducing thermoplastic sheet for medium and high-fill cars.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, the preparation method of sound insulation damping noise reduction sheet material for car

[0019] The main equipment is SHR-100A high-speed mixer, TE-50 co-rotating twin-screw extrusion granulation unit, and SJ90×30 plastic sheet extrusion unit.

[0020] The proportion of modified functional pellets is 65.3% of polyethylene resin, including 31.6% of EVA, 33.7% of LLDPE, 31.6% of inorganic filler, of which 21.1% of talc powder, 10.5% of light calcium carbonate, titanate coupling agent 0.68%, lubricant polyethylene wax 0.53%, antioxidant 0.42%, diluent dispersant white oil 0.63%, halogen absorbent zinc stearate 0.53%.

[0021] Accurately weigh 15Kg of EVA (brand 18 / 3 produced by Beijing Chemical Plant), LLDPE (brand 7042 produced by Yangzi Petrochemical) 16Kg, talcum powder (1250 mesh produced by Zhejiang Johnson & Johnson Company) 10Kg, light calcium carbonate (800 mesh produced by Changzhou Calcium Carbonate Factory) ) 5Kg, polyethylene wax (melting poin...

Embodiment 2

[0022] Embodiment 2, the preparation method of sound insulation damping noise reduction sheet material for car

[0023] Main equipment is identical with embodiment 1.

[0024] The proportion of modified functional pellets is 65.5% polyethylene resin, including 31.7% EVA, 33.8% LLDPE, 31.7% inorganic filler light calcium carbonate, 0.68% titanate coupling agent, and 0.53% lubricant polyethylene wax %, 0.42% antioxidant, 0.63% dilute dispersant white oil, 0.53% halogen absorbent zinc stearate.

[0025] Accurately weigh 15Kg of EVA (brand PE-3019 produced by Brazil Imperial Chemical Co., Ltd.), 16Kg of LLDPE (manufactured by Yangzi Petrochemical Company of brand 7042), 15Kg of light calcium carbonate (1200 mesh produced by Changzhou Calcium Carbonate Factory), polyethylene wax (melting point 100- 120°C, produced by Sichuan Chengdu Tongli Auxiliary Co., Ltd.) 250g, antioxidant (antioxidant SK-1010, produced by Shandong Qingdao Haida Chemical Co., Ltd.) 200g, titanate coupling age...

Embodiment 3

[0026] Embodiment 3, the preparation method of sound insulation damping noise reduction sheet material for car

[0027] Main equipment is identical with embodiment 1.

[0028] The proportion of modified functional pellets is 65.4% polyethylene resin, including 52.7% EVA, 12.7% EPDM, 31.6% light calcium carbonate inorganic filler, 0.67% titanate coupling agent, and 0.53 polyethylene wax as a lubricant %, 0.63% antioxidant, 0.63% dilute dispersant white oil, 0.53% halogen absorbent zinc stearate.

[0029] Accurately weigh 25Kg of EVA (brand PE-3019 produced by Brazil Imperial Chemical Co., Ltd.), 6Kg of EPDM (brand NDR3430 produced by Beijing Chenhui Weiye Technology Co., Ltd.), 15Kg of light calcium carbonate (1200 mesh produced by Changzhou Calcium Carbonate Factory), polyethylene Wax (melting point 100-120°C, produced by Sichuan Chengdu Tongli Auxiliary Co., Ltd.) 250g, antioxidant (antioxidant SK-1010, produced by Shandong Qingdao Haid Chemical Co., Ltd.) 300g, titanate cou...

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Abstract

The invention provides a sound-insulating, damping, and noise-reducing thermoplastic sheet for cars. It adopts a high-speed mixer to mix the raw materials of the modified functional pellets, and then prepares the modified functional pellets through a twin-screw extrusion pelletizing unit. The functional pellets are then passed through the sheet or plate extrusion production line to be made into a sound-insulating, damping and noise-reducing thermoplastic sheet for cars with medium and high filling. Modified functional granular material distribution ratio (mass percentage): polyethylene resin 27.6-70.4%, inorganic filler 28-68%, coupling agent 0.4-1.5%, lubricant 0.4-0.8%, antioxidant 0.1-0.7% , 0.3-0.8% diluting dispersant, 0.4-1.0% halogen absorbent; raw materials of modified functional pellets are added to a high-speed mixer and heated to 70°C, then cooled to room temperature. Twin-screw extrusion granulator cylinder control temperature 100-170 ℃, head control temperature 140-200 ℃. The extruder main engine of the plate extrusion production line controls the temperature at 90-170°C, and the head controls the temperature at 120-200°C.

Description

technical field [0001] The invention relates to the molding or connection of plastics, in particular to a method of mixing raw materials such as polyethylene matrix resin and inorganic fillers with modified functional pellets by using a high-speed mixer, and then preparing modified functional pellets through a twin-screw extrusion granulation unit. Granules, modified functional granules are then passed through a sheet or plate extrusion production line to produce a medium-high filling car with a sound-insulating, damping and noise-reducing thermoplastic sheet. Background technique [0002] At present, the barrier sheets for domestic vehicles are mainly asphalt barrier sheets. Asphalt barrier sheets are sheets filled with a large amount of inorganic substances with asphalt as a continuous item, and are mostly used for relatively flat floors of trucks or cars. Although the sheet has the characteristics of good barrier properties, due to the low strength...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08K5/11B29C47/40
Inventor 王东川钱时杰朱华平徐国平
Owner HENKEL CORP
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