CN103710872A - Nonwoven cloth sound absorbing cotton containing wood sawdust - Google Patents

Abstract

The invention relates to sound absorbing cotton, in particular to nonwoven cloth sound absorbing cotton containing wood sawdust. The nonwoven cloth sound absorbing cotton is composed of a top face layer, a back layer and a fiber cotton layer clamped between the top face layer and the back layer, the top face layer and the back layer are made of nonwoven cloth, and the nonwoven cloth is formed by, by weight, 100 parts of syndiotactic polypropylene, 2-3 parts of sodium polyacrylate, 1-2 parts of triethanolamine, 2-3 parts of white carbon black, 12-15 parts of dioctyl terephthalate, 5-7 parts of chlorinated paraffin, 10-12 parts of the wood sawdust, 4-5 parts of clay, 2-3 parts of stearic acid, 2-4 parts of circium japonicum, 3-5 parts of boxthorn leaf, 2-3 parts of dry white hyacinth bean flower and 4-5 parts of auxiliary through a melt-blowing method. The nonwoven cloth which is excellent in mechanical performance, fireproof, flame-retardant, breathable and heat-insulating is adopted as an outer layer material, so that good sound-absorbing and denoising effect is realized; the nonwoven cloth sound absorbing cotton is low in material cost and has great application prospect.

Description

A kind of nonwoven fabric acoustical cotton that contains wooden sawdust

Technical field

The present invention relates to a kind of acoustical cotton, be specifically related to a kind of nonwoven fabric acoustical cotton that contains wooden sawdust.

Background technology

Acoustical cotton is the effect materials such as a class set absorbing sound and lowering noise, control tonequality and decoration, be widely used in the places such as household, music hall, cinema, automobile, factory building, traditional acoustical cotton material is mainly the materials such as glass fibre, polyester fiber, rock wool, mineral wool, yet there is certain defect in acoustical cotton prepared by these materials, as poor in the feature of environmental protection, cause a disease carcinogenic, inflammable, water imbibition is poor, service life is short etc., therefore, be necessary to improve original acoustical cotton material, to improve its Environmental Safety, improve user's experience; Nonwoven fabric is undoubtedly a kind of desirable alternative materials, it have moisture retardant, pliable and tough light weight, good permeability, can recycle, the advantage such as nontoxic, coordinate again other sound-absorbing materials, can effectively improve the defect of existing acoustical cotton, promote sound-absorbing, soundproof effect.

Summary of the invention

The object of the invention is to, for the deficiency of current material, provide a kind of nonwoven fabric acoustical cotton that contains wooden sawdust, make it have the effects such as flame-proof environmental protection, ventilative insulation, sound absorption and noise isolation, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of nonwoven fabric acoustical cotton that contains wooden sawdust, by top coat, back layer, and the cellucotton layer being clipped between top coat and back layer forms, described top coat, back layer adopts nonwoven cloth material, nonwoven fabric described in it is characterized in that is made by meltblown by the raw material of following weight portion: syndiotactic polypropylene 100, Sodium Polyacrylate 2-3, triethanolamine 1-2, white carbon 2-3, DOTP 12-15, chlorinated paraffin wax 5-7, wooden sawdust 10-12, clay 4-5, stearic acid 2-3, setose thistle 2-4, folium lycii 3-5, extra dry white wine flower of hyacinth dolichos 2-3, auxiliary agent 4-5,

Described auxiliary agent is made by the raw material of following weight portion: mica 30-40, nano-sized carbon 1-2, antioxidant MB 1-2, aluminate coupling agent DL-411 3-4, Sodium Benzoate 1-2,582-2 amino resins 3-4, actinolite 2-3, urea 1-2, cyanuric acid zinc 2-3, epoxyoleic acid butyl ester 35-40, n-propyl gallate 2-3, coix seed oil 1-2, vanadium carbide 2-3, Tea Polyphenols 1-2; Preparation method sends into mica, actinolite in calcining furnace and calcine 2-3 hour at 720-740 ℃, then, takes out, and sends in the hydrochloric acid solution of 10-15% and soaks 2-3 hour, filters, and obtains filter residue, with clear water, cleans, and dries, grinds to form 400-600 order powder; Gained powder mixes with other residual components, is heated to 60-70 ℃, and stirring reaction 40-50 minute is cooling, grinds to form slurry, obtains.

Described a kind of nonwoven fabric acoustical cotton that contains wooden sawdust, is characterized in that, nonwoven cloth material is made by following step:

(1) setose thistle, folium lycii, extra dry white wine flower of hyacinth dolichos mixed and pulverize as 200-250 order powder, standby;

(2) wooden sawdust is sent in retort, at 530-620 ℃, 3-4 hour is processed in charing, takes out, and is ground into powder;

(3) clay is put into calcining furnace and calcined 3-4 hour at 710-740 ℃, take out cooling after, be ground into 300-400 object powder;

(4) isotactic polypropylene is heated to molten condition, adds step (1), (2), (3) material, stir;

(5) in step (4) material, add other residual components, fully stir, mix, by nozzle, spray silk and make nonwoven fabric.

Beneficial effect of the present invention is, the raw materials such as the white carbon adding, clay have effectively improved the mechanical property of material, and its pliable and tough wear-resisting, stretch-proof is impacted; The natural plant fibres such as Chinese herbal medicine, increased the absorbing sound and lowering noise effect of material, wooden sawdust after charing, short texture, sound-absorbing effect strengthens, and can also adsorb the noxious material in environment for use, again in conjunction with other raw materials, given nonwoven cloth material good absorbing sound and lowering noise, fire resistant flame retardant, ventilative insulation, therefore, nonwoven fabric acoustical cotton prepared by the present invention is with a wide range of applications.

The specific embodiment

Embodiment

A kind of nonwoven fabric acoustical cotton that contains wooden sawdust, by top coat, back layer, and the cellucotton layer being clipped between top coat and back layer forms, described top coat, back layer adopt nonwoven cloth material, and the nonwoven fabric described in it is characterized in that is made by meltblown by the raw material of following weight portion: syndiotactic polypropylene 100, Sodium Polyacrylate 3, triethanolamine 2, white carbon 3, DOTP 15, chlorinated paraffin wax 6, wooden sawdust 12, clay 5, stearic acid 3, setose thistle 4, folium lycii 5, extra dry white wine flower of hyacinth dolichos 3, auxiliary agent 5;

Above-mentioned auxiliary agent is made by the raw material of following weight portion: mica 30, nano-sized carbon 1, antioxidant MB 1, aluminate coupling agent DL-411 3, Sodium Benzoate 1,582-2 amino resins 4, actinolite 2, urea 1, cyanuric acid zinc 2, epoxyoleic acid butyl ester 35, n-propyl gallate 3, coix seed oil 1, vanadium carbide 2, Tea Polyphenols 1; Preparation method sends into mica, actinolite in calcining furnace and calcine 2-3 hour at 720-740 ℃, then, takes out, and sends in the hydrochloric acid solution of 10-15% and soaks 2-3 hour, filters, and obtains filter residue, with clear water, cleans, and dries, grinds to form 400-600 order powder; Gained powder mixes with other residual components, is heated to 60-70 ℃, and stirring reaction 40-50 minute is cooling, grinds to form slurry, obtains.。

A nonwoven fabric acoustical cotton that contains wooden sawdust, its top coat and back layer nonwoven cloth material are made by following step:

(1) setose thistle, folium lycii, extra dry white wine flower of hyacinth dolichos are mixed and pulverized be 250 order powder, standby;

(2) wooden sawdust is sent in retort, at 530-620 ℃, charing is processed 4 hours, takes out, and is ground into powder;

(3) clay is put into calcining furnace and at 710-740 ℃, is calcined 4 hours, take out cooling after, be ground into 400 object powder;

(4) isotactic polypropylene is heated to molten condition, adds step (1), (2), (3) material, stir;

(5) in step (4) material, add other residual components, fully stir, mix, by nozzle, spray silk and make nonwoven fabric.

The performance test results of acoustical cotton of the present invention is:

The comprehensive Noise Reduction coefficient (NRC) of the thick product of 5cm: 0.85

Anti-flammability: B1 level

Hygroscopicity :≤5%

Thermal conductivity factor W/ (m.k): 0.03.

Claims (2)

1. a nonwoven fabric acoustical cotton that contains wooden sawdust, by top coat, back layer, and the cellucotton layer being clipped between top coat and back layer forms, described top coat, back layer adopts nonwoven cloth material, nonwoven fabric described in it is characterized in that is made by meltblown by the raw material of following weight portion: syndiotactic polypropylene 100, Sodium Polyacrylate 2-3, triethanolamine 1-2, white carbon 2-3, DOTP 12-15, chlorinated paraffin wax 5-7, wooden sawdust 10-12, clay 4-5, stearic acid 2-3, setose thistle 2-4, folium lycii 3-5, extra dry white wine flower of hyacinth dolichos 2-3, auxiliary agent 4-5,

Described auxiliary agent is made by the raw material of following weight portion: mica 30-40, nano-sized carbon 1-2, antioxidant MB 1-2, aluminate coupling agent DL-411 3-4, Sodium Benzoate 1-2,582-2 amino resins 3-4, actinolite 2-3, urea 1-2, cyanuric acid zinc 2-3, epoxyoleic acid butyl ester 35-40, n-propyl gallate 2-3, coix seed oil 1-2, vanadium carbide 2-3, Tea Polyphenols 1-2; Preparation method sends into mica, actinolite in calcining furnace and calcine 2-3 hour at 720-740 ℃, then, takes out, and sends in the hydrochloric acid solution of 10-15% and soaks 2-3 hour, filters, and obtains filter residue, with clear water, cleans, and dries, grinds to form 400-600 order powder; Gained powder mixes with other residual components, is heated to 60-70 ℃, and stirring reaction 40-50 minute is cooling, grinds to form slurry, obtains.

2. a kind of nonwoven fabric acoustical cotton that contains wooden sawdust as claimed in claim 1, is characterized in that, described nonwoven fabric is made by following step:

(1) setose thistle, folium lycii, extra dry white wine flower of hyacinth dolichos mixed and pulverize as 200-250 order powder, standby;

(2) wooden sawdust is sent in retort, at 530-620 ℃, 3-4 hour is processed in charing, takes out, and is ground into powder;

(3) clay is put into calcining furnace and calcined 3-4 hour at 710-740 ℃, take out cooling after, be ground into 300-400 object powder;

(4) isotactic polypropylene is heated to molten condition, adds step (1), (2), (3) material, stir;

(5) in step (4) material, add other residual components, fully stir, mix, by nozzle, spray silk and make nonwoven fabric.