CN104401238A - Vehicle seat sponge, manufacturing method, module and vehicle seat - Google Patents
Vehicle seat sponge, manufacturing method, module and vehicle seat Download PDFInfo
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- CN104401238A CN104401238A CN201410594838.8A CN201410594838A CN104401238A CN 104401238 A CN104401238 A CN 104401238A CN 201410594838 A CN201410594838 A CN 201410594838A CN 104401238 A CN104401238 A CN 104401238A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/70—Upholstery springs ; Upholstery
- B60N2/7023—Coach-like constructions
- B60N2/7035—Cushions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0008—Foam properties flexible
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0041—Foam properties having specified density
- C08G2110/0058—≥50 and <150kg/m3
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- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses vehicle seat sponge, a manufacturing method, a module and a vehicle seat. The vehicle seat sponge comprises a main functional area, wherein a left supporting area and a right supporting area are respectively arranged on the two sides of the main functional area, the main functional area sequentially comprises a front area, a middle area and a back area from the front to the back, the density of the middle area is 60-70 gram per cubic meter, the density of the front area is 45-55 gram per cubic meter, and the density of each of the left supporting area, the right supporting area and the back area is 40-50 gram per cubic meter. The vehicle seat sponge has the characteristics of being multiple in density and hardness, the position which needs to be supported has better supporting performance, the position which needs to be soft has good buffering performance and attaching performance, when a vehicle swerves, the area with the two sides being hard can reduce horizontal accelerated speed borne by a human body, so that the hip and the thighs of the human body can lightly bear the body, the horizontal stability of the human body is guaranteed, and the comfort and the safety are good.
Description
Technical field
The invention belongs to automotive seating art field, relate to a kind of automotive seat sponge, also relate to the preparation method of a kind of automotive seat sponge simultaneously, for the preparation of automotive seat sponge mould and use the automotive seat of above-mentioned automotive seat sponge.
Background technology
Automotive seat sponge is the important component part of automotive seat, and it is directly connected to driver and the level of comfort of occupant in by bus.At present, automobile polyurethane sponge is the single hardness sponge products of single density, the mechanical property of conventional MDI system seat sponge is as follows: 25% indentation force deflection is (150 ± 20) N, 65% indentation force deflection is (390 ± 20) N, and density is (50 ± 5) g/m
3.Although this sponge meets the requirement taken to a certain extent, the current traveling comfort requirement that cannot meet passenger of this product.If automotive seat sponge is a little hard, people can be made to take uncomfortable, use for a long time, occupant can be made to feel relatively to tire out; If softer, sponge supportive is not enough, poor with fabric arranging effect, seat can be caused simultaneously to break away, affect safety.
Summary of the invention
The object of this invention is to provide a kind of automotive seat sponge, solve existing automotive seat sponge density hardness single, take uncomfortable problem.
Second object of the present invention is to provide the preparation method of a kind of automotive seat sponge.
3rd object of the present invention is to provide a kind of mould for the preparation of automotive seat sponge.
4th object of the present invention is to provide a kind of automotive seat using above-mentioned automotive seat sponge.
In order to realize above object, the technical solution adopted in the present invention is: a kind of automotive seat sponge, comprises function of tonic chord district, and both sides, function of tonic chord district are respectively equipped with left support district and right support district; Described function of tonic chord district comprises forward region, center and rear area from front to back successively; The density of described center is 60 ~ 70g/m
3, the density of forward region is 45 ~ 55g/m
3, the density of left support district, right support district and rear area is 40 ~ 50g/m
3.
25% indentation force deflection of described center is 110 ~ 150N, and 25% indentation force deflection of forward region is 150 ~ 190N, and 25% indentation force deflection of left support district, right support district and rear area is 190 ~ 250N.
In described automotive seat sponge, the connecting portion of each subregion converges extruding, common foaming automatically by this adjacent sectors, position raw material when foaming.
This automotive seat sponge is made up according to the ratio that mass ratio is 100:40 ~ 65 of the raw material of following parts by weight and isocyanates:
Polyether glycol 40 ~ 80 parts, graft polyether 20 ~ 60 parts, reaction expansion type amines catalyst 0.2 ~ 0.3 part, in earlier stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3 ~ 4 parts, multiple crosslinking agent 1 ~ 2.4 part, stabilizer 0.3 ~ 1.0 part.
Further, described center is made up according to the ratio that mass ratio is 100:40 ~ 50 of the raw material of following parts by weight and isocyanates: polyether glycol 60 ~ 80 parts, graft polyether 20 ~ 40 parts, react expansion type amines catalyst 0.2 ~ 0.3 part, early stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3 ~ 3.8 parts, multiple crosslinking agent 1 ~ 2 part, stabilizer 0.3 ~ 1.0 part;
Described forward region is made up according to the ratio that mass ratio is 100:50 ~ 60 of the raw material of following parts by weight and isocyanates: polyether glycol 50 ~ 80 parts, graft polyether 20 ~ 50 parts, react expansion type amines catalyst 0.2 ~ 0.3 part, early stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3 ~ 4 parts, multiple crosslinking agent 1 ~ 2 part, stabilizer 0.3 ~ 1.0 part;
Described left support district, right support district and rear area are made up according to the ratio that mass ratio is 100:55 ~ 65 of the raw material of following parts by weight and isocyanates: polyether glycol 40 ~ 80 parts, graft polyether 20 ~ 60 parts, react expansion type amines catalyst 0.2 ~ 0.3 part, early stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3.2 ~ 4 parts, multiple crosslinking agent 1 ~ 2.4 part, stabilizer 0.3 ~ 1.0 part.
Wherein, described polyether glycol is epoxy ethane-epoxy propane class copolyether polyalcohol.
Preferably, described polyether glycol is any one in TEP-330N (Tianjin petrochemical complex Co., Ltd), FA-703 (can Leah polyalcohol (Nanjing) Co., Ltd), GEP-330N (Shanghai Gaoqiao petrochemical industry Co., Ltd).
Described graft polyether is epoxypropane class graft polyether.
Preferably, described graft polyether is any one in POP-H45 (Jiangsu Changhua Polyurethane Technology Co., Ltd.), FA-3630S (Nanjing can Leah polyalcohol Co., Ltd).
Described reaction expansion type amines catalyst is any one in ZF-10 (Hensel is graceful), ALLCHEM 328 (Shanghai Ye Xing Industrial Co., Ltd.).
Described early stage, gel-type catalyst was response type gel-type catalyst in early stage.
Preferably, described early stage, gel-type catalyst was any one in ZR-50 (Hensel is graceful), DPA (Hensel is graceful), ZF-130 (Hensel is graceful).
Described later stage gel-type catalyst is response type later stage gel-type catalyst.
Preferably, described later stage gel-type catalyst is Dabco NE1070 (aerochemistry company).
Described foaming agent is water.
Described multiple crosslinking agent is low molecular weight polyols amine multiple crosslinking agent.
Described multiple crosslinking agent is the compound of diethanolamine (DEA) and triethanolamine, and mol wt is 105 ~ 150.
Described multiple crosslinking agent is the mass ratio of diethanolamine (DEA) and triethanolamine is the compound of 1:1.
Described stabilizer is silicone oil stabilizer.
Preferably, described stabilizer is any one in L-3151 (Mai Tu new high-tech material Co., Ltd), L-3628 (Mai Tu new high-tech material Co., Ltd), L-5309J (Mai Tu new high-tech material Co., Ltd).
Described isocyanates is modified diphenylmethane diisocyanate (MDI); Wherein, the mass percentage of NCO is 25.5% ~ 32.5%.
Described modified diphenylmethane diisocyanate is by 4, the mass content of 4-methyl diphenylene diisocyanate be not less than 40% methyl diphenylene diisocyanate heterogeneous mixture and polyethers A, polyethers B hybrid reaction gained intermediate product, then the mass percentage of the NCO be mixed to form with liquefaction methyl diphenylene diisocyanate is the compound of 25.5% ~ 32.5%.Wherein, in methyl diphenylene diisocyanate heterogeneous mixture, the mass content except 4,4-methyl diphenylene diisocyanate is not less than outside 40%, and all the other are methyl diphenylene diisocyanate isomery homologue.In described polyethers A, the mass content of epoxyethane is 50%-90%; The mass content of polyethers B ethylene oxide is 25%.The mass content of the NCO of described intermediate product is 15%.
The preparation method of automotive seat sponge of the present invention is cold-curing molding process planning.
A preparation method for above-mentioned automotive seat sponge, comprises the following steps:
1) the high density feed liquid of foaming, Midst density feed liquid and lower density feed liquid is configured for respectively, for subsequent use;
2) first lower density feed liquid is poured into successively region corresponding with left support district, rear area, right support district in mould, again Midst density feed liquid is poured into region corresponding with forward region in mould, then high density feed liquid is poured into region corresponding with center in mould;
3), after being poured, the shaping and demoulding of heat-insulation pressure keeping, opens bubble, to obtain final product.
Step 3) in, the shaping temperature of described heat-insulation pressure keeping is 40 ~ 60 DEG C, and pressure is 0.6MPa, and the time is 3 ~ 5min.
Step 3) in, described in open bubble be by the demoulding after products formed by opening the process of bubble machine, be specially and products formed 90% volume compressed, blow down gas.
For the preparation of the mould that above-mentioned automotive seat sponge is used, comprise former and formpiston, described former is provided with forming tank, is longitudinally provided with two vertical muscle, forming tank is from left to right divided into left shaping area, main shaping area and right shaping area in described forming tank; Transversely be provided with two horizontal bars in described main shaping area, forming tank be divided into from front to back front shaping area, middle shaping area and aftershaping district.
The height of described horizontal bar and vertical muscle is lower than the notch of forming tank.
Described formpiston not subregion itself, the bottom of its corresponding product, (seat basin is identical with sponge products bottom construction for fixing present basin, simultaneously also identical with formpiston structure, seat cushion can be blocked, fixing, supporting role is risen to seat cushion) on, be the region that passenger does not reach.
A kind of automotive seat, comprise cushion and backrest, described cushion and/or backrest adopt above-mentioned automotive seat sponge.
Automotive seat sponge of the present invention, adopt Tekscan human pressure distribution measurement system to measure, analyze areal distribution stressed when showing that human body is taken, then according to the performance of different subregion to foam, different requirements is proposed, according to the different stress point of human body, the soft durometer of design zones of different sponge.
Automotive seat sponge of the present invention, the density of center is 60 ~ 70g/m
3, the density of forward region is 45 ~ 55g/m
3, the density of left support district, right support district and rear area is 40 ~ 50g/m
3, there is the feature of the many hardness of multi-density, compared with single density single hardness sponge products and general sponge of the prior art, there is following advantage:
1, compared with general sponge, in the position needing to support, possessing good supportive, needing soft position, possessing good resiliency and stickiness;
2, during automobile turning, the region that both sides are harder, can reduce the transverse acceleration that human body bears, so that human body two can support health gently across with huckle, ensure the lateral stability of human body, traveling comfort and safety are all better, and this embodies especially obvious at driver's seat;
3, human body is initially being taken and is taking process for a long time, middle softer region, and foam is softer, has good plasticity, and human body is taken without extruding, and human bodily form and seat are well fitted, and experience comfortable, and resiliency is good;
4, identical product zones of different different soft and hard degree design, hard area, corner, strong to the coated supportive of surface cover, well-pressed, attractive in appearance; Soft district, more fit after surface cover is coated, coated sensation is more excellent;
5, designed by density zoning territory, the utilization of density regions, realize the lightweight of foam and optimize the material cost of foam from structure, realizing reducing costs, promote the level of profitability;
6, use environment-friendly type high-density, Midst density and low-density soft polyurethane foam material, mixing cast product, substitutes the single hardness raw material of single density, to reach the function realizing different densities and hardness in same sponge products zones of different; Simultaneously according to ergonomic's principle, realize sponge seat cushion soft or hard subregion, improving product comfort property.
The preparation method of automotive seat sponge of the present invention, first lower density feed liquid is poured into successively region corresponding with left support district, rear area, right support district in mould, again Midst density feed liquid is poured into region corresponding with forward region in mould, then high density feed liquid is poured into region corresponding with center in mould, adopt the pouring type from periphery to center, achieve the foaming of dissimilar raw material subregion, thus achieve the preparation of multi-density many hardness automotive seat sponge; Except mold exterior needs to increase extra equipment and investment, production efficiency is high; This preparation method's technique is simple, and easy to operate, cost is low, is applicable to applying.
Mould for the preparation of automotive seat sponge of the present invention, is longitudinally provided with two vertical muscle in the forming tank of former, forming tank is from left to right divided into left shaping area, main shaping area and right shaping area; Two horizontal bars are transversely provided with in described main shaping area, forming tank is divided into from front to back front shaping area, middle shaping area and aftershaping district, by the setting of two vertical muscle and two horizontal bars, achieve the separate of five subregions, thus in same mould, realize density and hardness subregion, make dissimilar raw material be confined to fixed area and can not cross each other and cause crossfire phenomenon, thus achieving and need not plant the foaming of raw material subregion.
Accompanying drawing explanation
Fig. 1 is the structural representation of the automotive seat sponge of embodiment 1;
Fig. 2 is the structural representation of former in embodiment 1 mould therefor;
Fig. 3 is the pictorial diagram of former in embodiment 1 mould therefor;
Fig. 4 is the pictorial diagram of formpiston in embodiment 1 mould therefor;
Fig. 5 is the flow scheme of the preparation method of automotive seat sponge of the present invention;
Fig. 6 is feed liquid casting sequence schematic diagram in the preparation method of automotive seat sponge of the present invention.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
Embodiment 1
The automotive seat sponge of the present embodiment, as shown in Figure 1, comprises function of tonic chord district, and both sides, function of tonic chord district are respectively equipped with left support district 4 and right support district 5; Described function of tonic chord district comprises forward region 3, center 1 and rear area 2 from front to back successively; The density of described center 1 is 60g/m
3, 25% indentation force deflection is 150N; The density of forward region 3 is 45g/m
3, 25% indentation force deflection is 190N; The density of left support district 4, right support district 5 and rear area 2 is 40g/m
3, 25% indentation force deflection is 250N.
In described automotive seat sponge, the connecting portion of each subregion converges extruding, common foaming automatically by this adjacent sectors, position raw material when foaming.
In the automotive seat sponge of the present embodiment, described center is made up according to the ratio (high density feed liquid) that mass ratio is 100:40 of the raw material of following parts by weight and isocyanates: polyether glycol 80 parts, graft polyether 20 parts, react expansion type amines catalyst 0.3 part, early stage gel-type catalyst 0.4 part, later stage gel-type catalyst 0.5 part, foaming agent 3.0 parts, multiple crosslinking agent 1.4 parts, stabilizer 0.7 part;
Described forward region is made up according to the ratio (Midst density feed liquid) that mass ratio is 100:50 of the raw material of following parts by weight and isocyanates: polyether glycol 70 parts, graft polyether 30 parts, react expansion type amines catalyst 0.3 part, early stage gel-type catalyst 0.2 part, later stage gel-type catalyst 0.6 part, foaming agent 3.7 parts, multiple crosslinking agent 1.0 parts, stabilizer 0.7 part;
Described left support district, right support district and rear area are made up according to the ratio (lower density feed liquid) that mass ratio is 100:55 of the raw material of following parts by weight and isocyanates: polyether glycol 50 parts, graft polyether 50 parts, react expansion type amines catalyst 0.3 part, early stage gel-type catalyst 0.2 part, later stage gel-type catalyst 0.55 part, foaming agent 4.0 parts, multiple crosslinking agent 2.0 parts, stabilizer 0.3 part.
Wherein, described polyether glycol is epoxypropane class polyether glycol TEP-330N (Tianjin petrochemical complex Co., Ltd); Described graft polyether is epoxypropane class graft polyether POP-H45 (Jiangsu Changhua Polyurethane Technology Co., Ltd.); Described reaction expansion type amines catalyst is ZF-10 (Hensel is graceful); Described early stage, gel-type catalyst was response type gel-type catalyst Z R-50 in early stage (Hensel is graceful); Described later stage gel-type catalyst is response type later stage gel-type catalyst Dabco NE-1070 (aerochemistry company); Described foaming agent is water; Described multiple crosslinking agent is the mass ratio of diethanolamine (DEA) and triethanolamine is the compound of 1:1; Described stabilizer is silicone oil stabilizer L-3151 (Mai Tu new high-tech material Co., Ltd).Described isocyanates is modified diphenylmethane diisocyanate, described modified diphenylmethane diisocyanate is by 4, the mass content of 4-methyl diphenylene diisocyanate be not less than 40% methyl diphenylene diisocyanate heterogeneous mixture and polyethers A, polyethers B hybrid reaction gained intermediate product, then the mass percentage of the NCO be mixed to form with liquefaction methyl diphenylene diisocyanate is the compound of 29.5%; Wherein, in methyl diphenylene diisocyanate heterogeneous mixture, the mass content except 4,4-methyl diphenylene diisocyanate is not less than outside 40%, and all the other are methyl diphenylene diisocyanate isomery homologue; In described polyethers A, the mass content of epoxyethane is 70%; The mass content of polyethers B ethylene oxide is 25%; The mass content of the NCO of described intermediate product is 15%.
The mould used for the preparation of above-mentioned automotive seat sponge of the present embodiment, comprise former (as shown in Figure 2 and Figure 3) and formpiston (as shown in Figure 4), described former is provided with forming tank, longitudinally be provided with two vertical muscle 16 in described forming tank, forming tank be from left to right divided into left shaping area 15, main shaping area and right shaping area 14; Transversely be provided with two horizontal bars 17 in described main shaping area, forming tank be divided into from front to back front shaping area 12, middle shaping area 11 and aftershaping district 13.The height of described horizontal bar 17 and vertical muscle 16 is lower than the notch of forming tank.The effect of horizontal bar and vertical muscle is when pouring into a mould, and the feed liquid of different densities is isolated in each self-corresponding region; During foaming, the foam that the feed liquid of adjacent sectors is formed covers horizontal bar and vertical muscle, automatically converges extruding, common foaming above horizontal bar and vertical muscle; Feed liquid itself has enough bonding forces in foaming process, the sponge of not same district is integrally connected shaping.
The preparation method of the automotive seat sponge of the present embodiment, be cold-curing molding process planning, technological process as shown in Figure 5, specifically comprises the following steps:
1) get each raw material by above-mentioned formula, be uniformly mixed in stirred tank, be configured for the high density feed liquid of foaming, Midst density feed liquid and lower density feed liquid respectively, discharging barrelling is for subsequent use;
2) delivery tool release agent spraying, 8 component Double-gun head ABB robot pourings and the luxuriant and rich with fragrance control system of Crouse's agate is adopted to pour into a mould mould, specifically as shown in Figure 6, corresponding with the female mould structure of Fig. 2, Fig. 3: to left shaping area 4. the mixing head of cating machine first sky is walked, along diagram route, successively to left shaping area 4., aftershaping district 2., 5. right shaping area evenly pour into a mould lower density feed liquid; After 5. right shaping area is poured, cating machine mixing head is walked to 3. center, front shaping area along diagram route sky, changes the cast of Midst density feed liquid fixed point; After 3. front shaping area is poured, cating machine mixing head continues sky along diagram route and walks to 1. center, middle shaping area, changes the cast of high density feed liquid fixed point; After 1. middle shaping area is poured, robot pouring playbacks, and namely completes cast;
3) after being poured, at 40 DEG C, heat-insulation pressure keeping 5min under 0.6MPa condition, the shaping and demoulding, obtains products formed; By the products formed after the demoulding by opening the process of bubble machine, being specially and products formed 90% volume is compressed, blow down gas; Then hang 3 days, to obtain final product.
The automotive seat of the present embodiment, comprise cushion and backrest, and described cushion adopts above-mentioned automotive seat sponge.Wherein, the rear area of described automotive seat sponge is near the junction of cushion and backrest.
Embodiment 2
The automotive seat sponge of the present embodiment, comprises function of tonic chord district, and both sides, function of tonic chord district are respectively equipped with left support district and right support district; Described function of tonic chord district comprises forward region, center and rear area from front to back successively; The density of described center is 65g/m
3, 25% indentation force deflection is 130N; The density of forward region is 55g/m
3, 25% indentation force deflection is 150N; The density of left support district, right support district and rear area is 50g/m
3, 25% indentation force deflection is 190N.
In described automotive seat sponge, the connecting portion of each subregion converges extruding, common foaming automatically by this adjacent sectors, position raw material when foaming.
In the automotive seat sponge of the present embodiment, described center is made up according to the ratio (high density feed liquid) that mass ratio is 100:45 of the raw material of following parts by weight and isocyanates: polyether glycol 70 parts, graft polyether 30 parts, react expansion type amines catalyst 0.25 part, early stage gel-type catalyst 0.2 part, later stage gel-type catalyst 0.6 part, foaming agent 3.3 parts, multiple crosslinking agent 2.0 parts, stabilizer 0.3 part;
Described forward region is made up according to the ratio (Midst density feed liquid) that mass ratio is 100:55 of the raw material of following parts by weight and isocyanates: polyether glycol 80 parts, graft polyether 20 parts, react expansion type amines catalyst 0.25 part, early stage gel-type catalyst 0.5 part, later stage gel-type catalyst 0.6 part, foaming agent 3.0 parts, multiple crosslinking agent 1.7 parts, stabilizer 0.5 part;
Described left support district, right support district and rear area are made up according to the ratio (lower density feed liquid) that mass ratio is 100:60 of the raw material of following parts by weight and isocyanates: polyether glycol 40 parts, graft polyether 60 parts, react expansion type amines catalyst 0.2 part, early stage gel-type catalyst 0.4 part, later stage gel-type catalyst 0.6 part, foaming agent 3.5 parts, multiple crosslinking agent 1.0 parts, stabilizer 0.7 part.
Wherein, described polyether glycol is epoxypropane class polyether glycol TEP-330N (Tianjin petrochemical complex Co., Ltd); Described graft polyether is epoxypropane class graft polyether POP-H45 (Jiangsu Changhua Polyurethane Technology Co., Ltd.); Described reaction expansion type amines catalyst is ALLCHEM 328 (Shanghai Ye Xing Industrial Co., Ltd.); Described early stage, gel-type catalyst was response type gel-type catalyst DPA in early stage (Hensel is graceful); Described later stage gel-type catalyst is response type later stage gel-type catalyst Dabco NE-1070 (aerochemistry company); Described foaming agent is water; Described multiple crosslinking agent is the mass ratio of diethanolamine (DEA) and triethanolamine is the compound of 1:1; Described stabilizer is silicone oil stabilizer L-3628 (Mai Tu new high-tech material Co., Ltd).Described isocyanates is modified diphenylmethane diisocyanate (with embodiment 1), and wherein the mass content of NCO is 29.5%.
The mould used for the preparation of above-mentioned automotive seat sponge of the present embodiment is with embodiment 1.
The preparation method of the automotive seat sponge of the present embodiment, be cold-curing molding process planning, technological process as shown in Figure 5, specifically comprises the following steps:
1) the high density feed liquid of foaming, Midst density feed liquid and lower density feed liquid is configured for respectively by above-mentioned formula, for subsequent use;
2) delivery tool release agent spraying, 8 component Double-gun head ABB robot pourings and the luxuriant and rich with fragrance control system of Crouse's agate is adopted to pour into a mould, specifically as shown in Figure 6, corresponding with the female mould structure of Fig. 2, Fig. 3: to left shaping area 4. the mixing head of cating machine first sky is walked, along diagram route, successively to left shaping area 4., aftershaping district 2., 5. right shaping area evenly pour into a mould lower density feed liquid; After 5. right shaping area is poured, cating machine mixing head is walked to 3. center, front shaping area along diagram route sky, changes the cast of Midst density feed liquid fixed point; After 3. front shaping area is poured, cating machine mixing head continues sky along diagram route and walks to 1. center, middle shaping area, changes the cast of high density feed liquid fixed point; After 1. middle shaping area is poured, robot pouring playbacks, and namely completes cast;
3) after being poured, at 60 DEG C, heat-insulation pressure keeping 3min under 0.6MPa condition, the shaping and demoulding, obtains products formed; By the products formed after the demoulding by opening the process of bubble machine, being specially and products formed 90% volume is compressed, blow down gas; Then hang 3 days, to obtain final product.
The automotive seat of the present embodiment, comprise cushion and backrest, and described backrest adopts above-mentioned automotive seat sponge.Wherein, the rear area of described automotive seat sponge is near the junction of cushion and backrest.
Embodiment 3
The automotive seat sponge of the present embodiment, comprises function of tonic chord district, and both sides, function of tonic chord district are respectively equipped with left support district and right support district; Described function of tonic chord district comprises forward region, center and rear area from front to back successively; The density of described center is 70g/m
3, 25% indentation force deflection is 110N; The density of forward region is 50g/m
3, 25% indentation force deflection is 170N; The density of left support district, right support district and rear area is 45g/m
3, 25% indentation force deflection is 220N.
In described automotive seat sponge, the connecting portion of each subregion converges extruding, common foaming automatically by this adjacent sectors, position raw material when foaming.
In the automotive seat sponge of the present embodiment, described center is made up according to the ratio (high density feed liquid) that mass ratio is 100:50 of the raw material of following parts by weight and isocyanates: polyether glycol 60 parts, graft polyether 40 parts, react expansion type amines catalyst 0.25 part, early stage gel-type catalyst 0.3 part, later stage gel-type catalyst 0.5 part, foaming agent 3.8 parts, multiple crosslinking agent 1.7 parts, stabilizer 0.5 part;
Described forward region is made up according to the ratio (Midst density feed liquid) that mass ratio is 100:60 of the raw material of following parts by weight and isocyanates: polyether glycol 60 parts, graft polyether 40 parts, react expansion type amines catalyst 0.2 part, early stage gel-type catalyst 0.4 part, later stage gel-type catalyst 0.5 part, foaming agent 4.0 parts, multiple crosslinking agent 1.3 parts, stabilizer 1.0 parts;
Described left support district, right support district and rear area are made up according to the ratio (lower density feed liquid) that mass ratio is 100:65 of the raw material of following parts by weight and isocyanates: polyether glycol 65 parts, graft polyether 35 parts, react expansion type amines catalyst 0.25 part, early stage gel-type catalyst 0.5 part, later stage gel-type catalyst 0.5 part, foaming agent 3.2 parts, multiple crosslinking agent 2.4 parts, stabilizer 0.5 part.
Wherein, described polyether glycol is epoxypropane class polyether glycol FA-703 (can Leah polyalcohol (Nanjing) Co., Ltd); Described graft polyether is epoxypropane class graft polyether FA-3630S (Nanjing can Leah polyalcohol Co., Ltd); Described reaction expansion type amines catalyst is ALLCHEM-328 (Shanghai Ye Xing Industrial Co., Ltd.); Described early stage, gel-type catalyst was response type gel-type catalyst Z F-130 in early stage (Hensel is graceful); Described later stage gel-type catalyst is response type later stage gel-type catalyst Dabco NE-1070 (aerochemistry company); Described foaming agent is water; Described multiple crosslinking agent is the mass ratio of diethanolamine (DEA) and triethanolamine is the compound of 1:1; Described stabilizer is silicone oil stabilizer L-5309J (Mai Tu new high-tech material Co., Ltd).Described isocyanates is modified diphenylmethane diisocyanate (with embodiment 1), and wherein the mass content of NCO is 29.5%.
The mould used for the preparation of above-mentioned automotive seat sponge of the present embodiment is with embodiment 1.
The preparation method of the automotive seat sponge of the present embodiment, be cold-curing molding process planning, technological process as shown in Figure 5, specifically comprises the following steps:
1) the high density feed liquid of foaming, Midst density feed liquid and lower density feed liquid is configured for respectively by above-mentioned formula, for subsequent use;
2) delivery tool release agent spraying, 8 component Double-gun head ABB robot pourings and the luxuriant and rich with fragrance control system of Crouse's agate is adopted to pour into a mould, specifically as shown in Figure 6, corresponding with the female mould structure of Fig. 2, Fig. 3: to left shaping area 4. the mixing head of cating machine first sky is walked, along diagram route, successively to left shaping area 4., aftershaping district 2., 5. right shaping area evenly pour into a mould lower density feed liquid; After 5. right shaping area is poured, cating machine mixing head is walked to 3. center, front shaping area along diagram route sky, changes the cast of Midst density feed liquid fixed point; After 3. front shaping area is poured, cating machine mixing head continues sky along diagram route and walks to 1. center, middle shaping area, changes the cast of high density feed liquid fixed point; After 1. middle shaping area is poured, robot pouring playbacks, and namely completes cast;
3) after being poured, at 50 DEG C, heat-insulation pressure keeping 4min under 0.6MPa condition, the shaping and demoulding, obtains products formed; By the products formed after the demoulding by opening the process of bubble machine, being specially and products formed 90% volume is compressed, blow down gas; Then hang 3 days, to obtain final product.
The automotive seat of the present embodiment, comprise cushion and backrest, and described cushion and backrest all adopt above-mentioned automotive seat sponge.Wherein, the rear area of described automotive seat sponge is near the junction of cushion and backrest.
Embodiment 4
The automotive seat sponge of the present embodiment, comprises function of tonic chord district, and both sides, function of tonic chord district are respectively equipped with left support district and right support district; Described function of tonic chord district comprises forward region, center and rear area from front to back successively; The density of described center is 60g/m
3, 25% indentation force deflection is 150N; The density of forward region is 55g/m
3, 25% indentation force deflection is 150N; The density of left support district, right support district and rear area is 45g/m
3, 25% indentation force deflection is 220N.
In described automotive seat sponge, the connecting portion of each subregion converges extruding, common foaming automatically by this adjacent sectors, position raw material when foaming.
In the automotive seat sponge of the present embodiment, described center is made up according to the ratio (high density feed liquid) that mass ratio is 100:45 of the raw material of following parts by weight and isocyanates: polyether glycol 65 parts, graft polyether 35 parts, react expansion type amines catalyst 0.2 part, early stage gel-type catalyst 0.5 part, later stage gel-type catalyst 0.7 part, foaming agent 3.6 parts, multiple crosslinking agent 1.0 parts, stabilizer 1.0 parts;
Described forward region is made up according to the ratio (Midst density feed liquid) that mass ratio is 100:55 of the raw material of following parts by weight and isocyanates: polyether glycol 50 parts, graft polyether 50 parts, react expansion type amines catalyst 0.25 part, early stage gel-type catalyst 0.3 part, later stage gel-type catalyst 0.7 part, foaming agent 3.3 parts, multiple crosslinking agent 2.0 parts, stabilizer 0.3 part;
Described left support district, right support district and rear area are made up according to the ratio (lower density feed liquid) that mass ratio is 100:60 of the raw material of following parts by weight and isocyanates: polyether glycol 80 parts, graft polyether 20 parts, react expansion type amines catalyst 0.25 part, early stage gel-type catalyst 0.3 part, later stage gel-type catalyst 0.7 part, foaming agent 3.7 parts, multiple crosslinking agent 1.5 parts, stabilizer 1.0 parts.
Wherein, described polyether glycol is epoxypropane class polyether glycol GEP-330N (Shanghai Gaoqiao petrochemical industry Co., Ltd); Described graft polyether is epoxypropane class graft polyether POP-H45 (Jiangsu Changhua Polyurethane Technology Co., Ltd.); Described reaction expansion type amines catalyst is ZF-10 (Hensel is graceful); Described early stage, gel-type catalyst was response type gel-type catalyst Z R-50 in early stage (Hensel is graceful); Described later stage gel-type catalyst is response type later stage gel-type catalyst Dabco NE-1070 (aerochemistry company); Described foaming agent is water; Described multiple crosslinking agent is the mass ratio of diethanolamine (DEA) and triethanolamine is the compound of 1:1; Described stabilizer is silicone oil stabilizer L-3151 (Mai Tu new high-tech material Co., Ltd).Described isocyanates is modified diphenylmethane diisocyanate (with embodiment 1), and wherein the mass content of NCO is 29.5%.
The mould used for the preparation of above-mentioned automotive seat sponge of the present embodiment is with embodiment 1.
The preparation method of the automotive seat sponge of the present embodiment, be cold-curing molding process planning, technological process as shown in Figure 5, specifically comprises the following steps:
1) the high density feed liquid of foaming, Midst density feed liquid and lower density feed liquid is configured for respectively by above-mentioned formula, for subsequent use;
2) delivery tool release agent spraying, 8 component Double-gun head ABB robot pourings and the luxuriant and rich with fragrance control system of Crouse's agate is adopted to pour into a mould, specifically as shown in Figure 6, corresponding with the female mould structure of Fig. 2, Fig. 3: to left shaping area 4. the mixing head of cating machine first sky is walked, along diagram route, successively to left shaping area 4., aftershaping district 2., 5. right shaping area evenly pour into a mould lower density feed liquid; After 5. right shaping area is poured, cating machine mixing head is walked to 3. center, front shaping area along diagram route sky, changes the cast of Midst density feed liquid fixed point; After 3. front shaping area is poured, cating machine mixing head continues sky along diagram route and walks to 1. center, middle shaping area, changes the cast of high density feed liquid fixed point; After 1. middle shaping area is poured, robot pouring playbacks, and namely completes cast;
3) after being poured, at 45 DEG C, heat-insulation pressure keeping 5min under 0.6MPa condition, the shaping and demoulding, obtains products formed; By the products formed after the demoulding by opening the process of bubble machine, being specially and products formed 90% volume is compressed, blow down gas; Then hang 3 days, to obtain final product.
The automotive seat of the present embodiment, comprise cushion and backrest, and described cushion and backrest all adopt above-mentioned automotive seat sponge.Wherein, the rear area of described automotive seat sponge is near the junction of cushion and backrest.
Claims (10)
1. an automotive seat sponge, is characterized in that: comprise function of tonic chord district, and both sides, function of tonic chord district are respectively equipped with left support district and right support district; Described function of tonic chord district comprises forward region, center and rear area from front to back successively; The density of described center is 60 ~ 70g/m
3, the density of forward region is 45 ~ 55g/m
3, the density of left support district, right support district and rear area is 40 ~ 50g/m
3.
2. automotive seat sponge according to claim 1, it is characterized in that: 25% indentation force deflection of described center is 110 ~ 150N, 25% indentation force deflection of forward region is 150 ~ 190N, and 25% indentation force deflection of left support district, right support district and rear area is 190 ~ 250N.
3. automotive seat sponge according to claim 1 and 2, is characterized in that: this automotive seat sponge is made up according to the ratio that mass ratio is 100:40 ~ 65 of the raw material of following parts by weight and isocyanates:
Polyether glycol 40 ~ 80 parts, graft polyether 20 ~ 60 parts, reaction expansion type amines catalyst 0.2 ~ 0.3 part, in earlier stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3 ~ 4 parts, multiple crosslinking agent 1 ~ 2.4 part, stabilizer 0.3 ~ 1.0 part.
4. automotive seat sponge according to claim 3, is characterized in that:
Described center is made up according to the ratio that mass ratio is 100:40 ~ 50 of the raw material of following parts by weight and isocyanates: polyether glycol 60 ~ 80 parts, graft polyether 20 ~ 40 parts, react expansion type amines catalyst 0.2 ~ 0.3 part, early stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3 ~ 3.8 parts, multiple crosslinking agent 1 ~ 2 part, stabilizer 0.3 ~ 1.0 part;
Described forward region is made up according to the ratio that mass ratio is 100:50 ~ 60 of the raw material of following parts by weight and isocyanates: polyether glycol 50 ~ 80 parts, graft polyether 20 ~ 50 parts, react expansion type amines catalyst 0.2 ~ 0.3 part, early stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3 ~ 4 parts, multiple crosslinking agent 1 ~ 2 part, stabilizer 0.3 ~ 1.0 part;
Described left support district, right support district and rear area are made up according to the ratio that mass ratio is 100:55 ~ 65 of the raw material of following parts by weight and isocyanates: polyether glycol 40 ~ 80 parts, graft polyether 20 ~ 60 parts, react expansion type amines catalyst 0.2 ~ 0.3 part, early stage gel-type catalyst 0.2 ~ 0.5 part, later stage gel-type catalyst 0.5 ~ 0.7 part, foaming agent 3.2 ~ 4 parts, multiple crosslinking agent 1 ~ 2.4 part, stabilizer 0.3 ~ 1.0 part.
5. automotive seat sponge according to claim 4, is characterized in that: described isocyanates is modified diphenylmethane diisocyanate, and wherein the mass percentage of NCO is 25.5% ~ 32.5%.
6. a preparation method for automotive seat sponge as claimed in claim 1, is characterized in that: comprise the following steps:
1) the high density feed liquid of foaming, Midst density feed liquid and lower density feed liquid is configured for respectively, for subsequent use;
2) first lower density feed liquid is poured into successively region corresponding with left support district, rear area, right support district in mould, again Midst density feed liquid is poured into region corresponding with forward region in mould, then high density feed liquid is poured into region corresponding with center in mould;
3), after being poured, the shaping and demoulding of heat-insulation pressure keeping, opens bubble, to obtain final product.
7. the preparation method of automotive seat sponge according to claim 6, is characterized in that: step 3) in, the shaping temperature of described heat-insulation pressure keeping is 40 ~ 60 DEG C, and pressure is 0.6MPa, and the time is 3 ~ 5min.
8. the preparation method of automotive seat sponge according to claim 6, is characterized in that: step 3) in, described in open bubble be by the demoulding after products formed by opening the process of bubble machine, products formed 90% volume is compressed, blow down gas.
9. one kind for the preparation of automotive seat sponge as claimed in claim 1 mould used, it is characterized in that: comprise former and formpiston, described former is provided with forming tank, longitudinally be provided with two vertical muscle in described forming tank, forming tank be from left to right divided into left shaping area, main shaping area and right shaping area; Transversely be provided with two horizontal bars in described main shaping area, forming tank be divided into from front to back front shaping area, middle shaping area and aftershaping district.
10. automotive seat, is characterized in that: comprise cushion and backrest, and described cushion and/or backrest adopt automotive seat sponge according to claim 1.
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