Sound-insulating pad used inside automobile and preparation process of sound-insulating pad
A technology for automobile interior and preparation process, applied in vehicle parts, layered products, transportation and packaging, etc., can solve problems such as lack of good sound absorption effect, and achieve the effect of good air permeability, isolation of audio environment, and improved effect.
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Embodiment 1
[0017] The sound-insulating pad for automobile interior of the present embodiment is formed by bonding the sound-absorbing layer and the sound-insulating layer with adhesive glue, and the sound-absorbing layer is made of the following raw materials in proportions by weight: 30 parts of bamboo charcoal fiber, 50 parts of hemp fiber, polyester 20 parts of ester fiber, 10 parts of glass fiber; the sound insulation layer is made of the following raw materials in parts by weight: 40 parts of nitrile rubber, 20 parts of alumina powder, 10 parts of quartz powder, 0.3 parts of sulfur, 0.2 parts of di-o-tolueneguanidine 0.1 part of dioctyl phthalate, 0.2 part of N-phenyl-N`-isopropyl-p-phenylenediamine, 1 part of chlorinated paraffin, 2 parts of antimony trioxide, 0.2 part of azodicarbonamide part, 0.1 part of sodium bicarbonate; adhesive glue is made from the following raw materials in parts by weight: 50 parts of silicone rubber adhesive.
Embodiment 2
[0019] The sound-insulating pad for automobile interior of the present embodiment is formed by bonding the sound-absorbing layer and the sound-insulating layer with adhesive glue, and the sound-absorbing layer is made of the following raw materials in proportions by weight: 60 parts of bamboo charcoal fiber, 80 parts of hemp fiber, polyester 40 parts of ester fiber, 30 parts of glass fiber; the sound insulation layer is made of the following raw materials in proportion by weight: 80 parts of nitrile rubber, 40 parts of alumina powder, 30 parts of quartz powder, 0.8 part of sulfur, 0.6 part of di-o-tolueneguanidine 0.4 parts of dioctyl phthalate, 0.4 parts of N-phenyl-N`-isopropyl-p-phenylenediamine, 3 parts of chlorinated paraffin, 4 parts of antimony trioxide, 0.5 parts of azodicarbonamide Part, 0.3 part of sodium bicarbonate; Adhesive glue is made from the following raw materials in proportion by weight: 80 parts of silicone rubber adhesive.
Embodiment 3
[0021] The sound-insulating pad for automobile interior of the present embodiment is formed by bonding the sound-absorbing layer and the sound-insulating layer with adhesive glue, and the sound-absorbing layer is made of the following raw materials in optimal proportions by weight: 50 parts of bamboo charcoal fiber, 60 parts of hemp fiber , 30 parts of polyester fiber, 20 parts of glass fiber; the sound insulation layer is made of the following raw materials with the optimal ratio by weight: 60 parts of nitrile rubber, 30 parts of alumina powder, 20 parts of quartz powder, 0.6 part of sulfur, two 0.4 parts of o-tolylguanidine, 0.2 parts of dioctyl phthalate, 0.3 parts of N-phenyl-N`-isopropyl-p-phenylenediamine, 2 parts of chlorinated paraffin, 3 parts of antimony trioxide, azo 0.3 part of dimethylformamide, 0.2 part of sodium bicarbonate; the adhesive is made of the following raw materials with the optimal ratio by weight: 70 parts of silicone rubber adhesive.
[0022] The pr...
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