Summary of the invention
The present invention has overcome deficiency of the prior art, is to provide that a kind of environmental protection, sound absorbing capabilities are excellent, the preparation method of strong, with low cost, the ornamental strong acoustic(al)absorbent of adsorption function.
Concrete technical scheme of the present invention is as follows:
A kind of preparation method with acoustic(al)absorbent of adsorption function comprises the steps:
(a) the first polyester staple fibers peacekeeping fiber A is mixed;
Described the first polyester staple fiber accounts for the 50%-70% of total fiber mass;
Described fiber A is selected from a kind of in the second polyester staple fiber, the Fypro;
The fusing point of described the first polyester staple fiber is 160 ℃~200 ℃; The fusing point of the second polyester staple fiber is 240 ℃~270 ℃;
(b) mixed fiber is carried out shredding, combing, form fleece;
(c) will obtain cellucotton after the acupuncture of fleece process, the roll-in;
The needling density of described acupuncture is 1.0~1.5 pins/cm
2Roll-in pressure during roll-in is 0.8~1.0Mpa, and roll-in speed is 1.18~1.26m/min;
(d) with the evengranular surface of spreading cellucotton of charcoal, described charcoal particle accounts for 0.6%~1.2% of cellucotton gross mass;
(e) then on the charcoal particle, lay one deck the first polyester staple fiber net, obtain the composite fibre cotton;
Described the first polyester staple fiber net is made through shredding, combing by the first polyester staple fiber, and the density of the first polyester staple fiber net is 40g/m
2~70g/m
2, thickness is 1mm~3mm;
(f) the composite fibre cotton is put in the baking oven heat-treated, heat treatment temperature is 160 ℃~210 ℃, and heat treatment time is 2min~3min;
(g) fabric or leather are placed on after heat treatment the composite fibre cotton, described fabric or leather contact with the first polyester staple fiber net on the composite fibre cotton, then fabric or leather are placed on the moulding press with the composite fibre cotton, can make acoustic(al)absorbent through the mould extruding;
The pressure of moulding press is 1.47 * 10 during extruding
5N/m
2~2.94 * 10
5N/m
2, the pressing mold time is 10s~20s.
Roller spacing during the middle roll-in of step (c) is 25mm~50mm.
The particle diameter of described charcoal particle is 200~250 orders.
Described fabric is dacron, and the density of dacron is 230-280g/m
2
The present invention with polyester staple fiber as raw material, with other raw material by self bond vitrified together, without any need for adhesive, and do not contain hazardous substance, formaldehydeless, free from extraneous odour, environmental protection.Cellucotton and charcoal particle, fabric or leather the first polyester staple fiber after by melting is bonded together.The charcoal particle that the present invention uses has very strong adsorption function, and the charcoal particle has improved the adsorption efficiency of acoustic(al)absorbent by the more ingress of air in interfibrous hole or charcoal particle and interfibrous space.The adsorption experiment of PARA FORMALDEHYDE PRILLS(91,95) proves, the adsorption efficiency of this acoustic(al)absorbent reaches more than 85%.This has the acoustic(al)absorbent material therefor environmental protection of adsorption function, easily reclaim, acoustically effective is good, especially the acoustically effective of bass obviously is improved.The present invention can play good decorative effect at surface coverage one deck fabric or the leather of the acoustic(al)absorbent with adsorption function, can change arbitrarily according to the style of the shape of replaceable mould and fabric, obtains the figure of oneself needs.This acoustic(al)absorbent with adsorption function is light, is easy to install.
The specific embodiment
The fusing point of " the first polyester staple fiber " among the embodiment is 160 ℃~200 ℃; The fusing point of " the second polyester staple fiber " is 240 ℃~270 ℃; The particle diameter of charcoal particle is 200~250 orders.
" fabric " of the present invention do not have special requirement, for common fabric gets final product.
" feeding unit ", " compression set ", " carding equipment ", " baking oven ", " moulding press " that the present invention uses all are existing equipment.
For content of the present invention is become apparent more, be further described below in conjunction with specific embodiment.
Embodiment 1
A kind of preparation method with acoustic(al)absorbent of adsorption function comprises the steps:
(a) the first polyester staple fibers peacekeeping the second polyester staple fiber is added in the raw material feeding unit, fiber mixes through feeding unit, and the first polyester staple fiber accounts for 50% of total fiber mass;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after the shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained cellucotton after by acupuncture, roll-in;
The needling density of described acupuncture is 1.0 pins/cm
2Roll-in pressure during roll-in is 0.8Mpa, and roll-in speed is 1.26m/min, and the roller spacing is 25mm;
(d) be the evengranular surface of spreading cellucotton of 200 purpose charcoals with particle diameter, described charcoal particle accounts for 0.6% of cellucotton gross mass;
(e) then on the charcoal particle, lay one deck the first polyester staple fiber net, obtain the composite fibre cotton;
Described the first polyester staple fiber net is made through shredding, combing by the first polyester staple fiber, and the density of the first polyester staple fiber net is 40g/m
2, thickness is 3mm;
(f) the composite fibre cotton is put in the baking oven heat-treated, heat treatment temperature is 180 ℃, and heat treatment time is 2min;
(g) leather is placed on after heat treatment the composite fibre cotton, described leather contacts with the first polyester staple fiber net on the composite fibre cotton, then leather is placed on the moulding press with the composite fibre cotton, can make acoustic(al)absorbent through the mould extruding;
The pressure of moulding press is 1.80 * 10 during extruding
5N/m
2, the pressing mold time is 15s.
WarpThe acoustic(al)absorbent that step (g) processing obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
Embodiment 2
A kind of preparation method with acoustic(al)absorbent of adsorption function comprises the steps:
(a) the first polyester staple fibers peacekeeping the second polyester staple fiber is added in the raw material feeding unit, fiber mixes through feeding unit, and the first polyester staple fiber accounts for 60% of total fiber mass;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after the shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained cellucotton after by acupuncture, roll-in;
The needling density of described acupuncture is 1.2 pins/cm
2Roll-in pressure during roll-in is 0.9Mpa, and roll-in speed is 1.20m/min, and the roller spacing is 30mm;
(d) be the evengranular surface of spreading cellucotton of 250 purpose charcoals with particle diameter, described charcoal particle accounts for 1.0% of cellucotton gross mass;
(e) then on the charcoal particle, lay one deck the first polyester staple fiber net, obtain the composite fibre cotton;
Described the first polyester staple fiber net is made through shredding, combing by the first polyester staple fiber, and the density of the first polyester staple fiber net is 50g/m
2, thickness is 2mm;
(f) the composite fibre cotton is put in the baking oven heat-treated, heat treatment temperature is 190 ℃, and heat treatment time is 2.5min;
(g) be 250g/m with density
2Dacron be placed on after heat treatment the composite fibre cotton, described dacron contacts with the first polyester staple fiber net on the composite fibre cotton, then dacron is placed on the moulding press with the composite fibre cotton, can makes acoustic(al)absorbent through the mould extruding;
The pressure of moulding press is 1.94 * 10 during extruding
5N/m
2, the pressing mold time is 16s.
WarpThe acoustic(al)absorbent that step (g) processing obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
Embodiment 3
A kind of preparation method with acoustic(al)absorbent of adsorption function comprises the steps:
(a) the first polyester staple fibers peacekeeping the second polyester staple fiber is added in the raw material feeding unit, fiber mixes through feeding unit, and the first polyester staple fiber accounts for 70% of total fiber mass;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after the shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained cellucotton after by acupuncture, roll-in;
The needling density of described acupuncture is 1.3 pins/cm
2Roll-in pressure during roll-in is 1.0Mpa, and roll-in speed is 1.26m/min, and the roller spacing is 50mm;
(d) be the evengranular surface of spreading cellucotton of 250 purpose charcoals with particle diameter, described charcoal particle accounts for 1.2% of cellucotton gross mass;
(e) then on the charcoal particle, lay one deck the first polyester staple fiber net, obtain the composite fibre cotton;
Described the first polyester staple fiber net is made through shredding, combing by the first polyester staple fiber, and the density of the first polyester staple fiber net is 60g/m
2, thickness is 3mm;
(f) the composite fibre cotton is put in the baking oven heat-treated, heat treatment temperature is 200 ℃, and heat treatment time is 3min;
(g) be 280g/m with density
2Dacron be placed on after heat treatment the composite fibre cotton, described dacron contacts with the first polyester staple fiber net on the composite fibre cotton, then dacron is placed on the moulding press with the composite fibre cotton, can makes acoustic(al)absorbent through the mould extruding;
The pressure of moulding press is 2.20 * 10 during extruding
5N/m
2, the pressing mold time is 18s.
WarpThe acoustic(al)absorbent that step (g) processing obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
Embodiment 4
A kind of preparation method with acoustic(al)absorbent of adsorption function comprises the steps:
(a) the first polyester staple fibers peacekeeping Fypro is added in the raw material feeding unit, fiber mixes through feeding unit, and the first polyester staple fiber accounts for 65% of total fiber mass;
(b) mixed fiber is at first carried out pre-shredding, agglomerated fiber together becomes loose; Carry out smart shredding after pre-shredding is finished, fiber is mixed uniformly; The compressed device of fiber after the shredding is thrown carding equipment into, and fiber forms continuous fleece behind carding equipment;
(c) fleece is obtained cellucotton after by acupuncture, roll-in;
The needling density of described acupuncture is 1.5 pins/cm
2Roll-in pressure during roll-in is 0.9Mpa, and roll-in speed is 1.18m/min, and the roller spacing is 25mm;
(d) be the evengranular surface of spreading cellucotton of 200 purpose charcoals with particle diameter, described charcoal particle accounts for 0.8% of cellucotton gross mass;
(e) then on the charcoal particle, lay one deck the first polyester staple fiber net, obtain the composite fibre cotton;
Described the first polyester staple fiber net is made through shredding, combing by the first polyester staple fiber, and the density of the first polyester staple fiber net is 50g/m
2, thickness is 2mm;
(f) the composite fibre cotton is put in the baking oven heat-treated, heat treatment temperature is 200 ℃, and heat treatment time is 3min;
(g) fabric is placed on after heat treatment the composite fibre cotton, described fabric contacts with the first polyester staple fiber net on the composite fibre cotton, then dacron is placed on the moulding press with the composite fibre cotton, can make acoustic(al)absorbent through the mould extruding;
The pressure of moulding press is 2.90 * 10 during extruding
5N/m
2, the pressing mold time is 20s.
WarpThe acoustic(al)absorbent that step (g) processing obtains namely can be used as finished product and dispatches from the factory behind side cut, test package.
Below the sound absorbing capabilities of acoustic(al)absorbent that the present invention is prepared detect, table 1 is the acoustic absorptivity of each product; The detection method employing standard of acoustic absorptivity is GB/T 20247-2006 " acoustic absorptivity measurements of acoustic reverberation chamber ", checkout equipment: BK4418 type architectural acoustics analyzer; 26 ℃ of environment temperatures, humidity 83%.
Table 1 is the acoustic absorptivity of each product
The method and apparatus of measuring air formaldehyde concentration among the present invention is as follows:
Examination criteria: GB/T18883-2002 " IAQ standard "
Detecting instrument: 723 type visible spectrophotometers
Detection method: phenol reagent AAS.
The room of below selecting in the experiment is long 5m, wide 4m, high 2.85m; Acoustic(al)absorbent is long 0.8m, wide 0.6m, thick 9mm.
What No. 1 room used is the acoustic(al)absorbent that embodiment 1 obtains, and what No. 2 room used is the acoustic(al)absorbent that embodiment 2 obtains, and what No. 3 room used is the acoustic(al)absorbent that embodiment 3 obtains
Choose three newly-decorated rooms, record its Formaldehyde Concentration of Indoor Air and be: No. 1 room 0.14mg/m
3, No. 2 room 0.16mg/m
3, No. 3 room 0.16mg/m
3, get three of acoustic(al)absorbents, the acoustic(al)absorbent that will have adsorption function is decorated respectively the metope in three rooms, be placed on the inside, No. 1 2h is placed in the room, and No. 2 2.5h is placed in the room, No. 3 3h is placed in the room, takes out the concentration of formaldehyde that detects in three space airs behind the acoustic(al)absorbent to be: No. 1 room 0.02mg/m
3, No. 2 room 0.02mg/m
3, No. 3 room 0.01mg/m
3
The adsorpting data of acoustic(al)absorbent