CN109851757A - A kind of flexible polyurethane foam plastic product and its preparation process - Google Patents
A kind of flexible polyurethane foam plastic product and its preparation process Download PDFInfo
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- CN109851757A CN109851757A CN201910069564.3A CN201910069564A CN109851757A CN 109851757 A CN109851757 A CN 109851757A CN 201910069564 A CN201910069564 A CN 201910069564A CN 109851757 A CN109851757 A CN 109851757A
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- polyurethane foam
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Abstract
The invention discloses a kind of flexible polyurethane foam plastic products, belong to the technical field of polyurethane product, its key points of the technical solution are that, by weight, the raw material for preparing of flexible polyurethane foam plastic product includes following components: 100 parts of polyether polyol, 30-50 parts of toluene di-isocyanate(TDI), 1-5 parts of water, 0.1-0.5 parts of triethylene diamine, 0.1-0.5 parts of stannous octoate, 0.3-1.5 parts of silicone oil, it can also include fiber reinforced composition 18-24 parts, wherein, by weight, fiber reinforced composition includes 11.4-15.4 parts of spandex fibre, 10-14 parts of nylon fibre, 5.2-9.4 parts of polyester fiber, 5.6-7.2 parts of bamboo fiber, 3.3-4.2 parts of coupling agent；Production method includes that above-mentioned four kinds of fibers and coupling agent are first mixed 20-30min under 500-600r/min, and then again with remaining ingredient mixed foaming, flexible polyurethane foam plastic product obtained is with excellent resilience performance, support performance and usage comfort.
Description
Technical field
The present invention relates to the technical field of polyurethane product, in particular to a kind of flexible polyurethane foam plastic product and its
Preparation process.
Background technique
Flexible polyurethane foam abbreviation soft polyurethane foam or the soft bubble of PU are a kind of with certain elasticity and flexibility
Polyurethane foam plastics and the maximum a kind of polyurethane products of dosage, inside is presented porous honeycomb structure, has good
Flexibility, elasticity, water imbibition, water resistance etc. are widely used in Sofa cushion, sofa backrest, sofa handrail, vehicle seat, mattress
Etc. industries.
Existing to can refer to the Chinese patent application that application publication number is CN104130371B, it discloses a kind of low smells
The bus seat of height rebound according to mass ratio is 100:55- by combination material and modified diphenylmethane diisocyanate with sponge
60 ratio is made, wherein combination material is composed of the following parts by weight: 50-80 parts of polyether polyol, graft polyether 20-
50 parts, 0.2-0.3 parts of amines catalyst, gel catalyst 0.2-0.5 parts of early period, gel catalyst 0.5-0.7 parts of later period, foaming
3-4 parts of agent, 1 part of crosslinking agent, 0.5-0.7 parts of stabilizer.
TDI (toluene di-isocyanate(TDI)) system PU is soft, and bubble refers to using toluene di-isocyanate(TDI) as the soft bubble foaming raw material of PU
The soft bubble of PU obtained, the apparent density of the soft bubble of TDI system PU is relatively low, and foam volume is big, comfortable feel, however, it is universal
Have the shortcomings that resilience performance is not good enough, cause its support degree insufficient, usage comfort is not good enough, limit its Sofa cushion,
The application of the industries such as sofa backrest, sofa handrail, vehicle seat, mattress also limits the value of itself.
Summary of the invention
In view of the shortcomings of the prior art, the purpose of the present invention one is: providing a kind of former for foaming with toluene di-isocyanate(TDI)
The flexible polyurethane foam plastic product of material has excellent resilience performance, support performance and usage comfort.
The first purpose of this invention has the technical scheme that
A kind of flexible polyurethane foam plastic product includes by weight following components: 100 parts of polyether polyol, toluene
30-50 parts of diisocyanate, 1-5 parts of water, 0.1-0.5 parts of triethylene diamine, 0.1-0.5 parts of stannous octoate, silicone oil 0.3-1.5
Part.
The present invention is further arranged to: include following components by weight: 100 parts of polyether polyol, toluene two are different
35-40 parts of cyanate, 2-3 parts of water, 0.2-0.4 parts of triethylene diamine, 0.2-0.3 parts of stannous octoate, 0.5-0.7 parts of silicone oil.
By using above scheme, the main body of foamable reaction is the pure and mild toluene di-isocyanate(TDI) of polyether polyols, and water is as hair
Infusion, triethylene diamine and stannous octoate are as catalyst, and silicone oil is as stabilizer.Experiment discovery, above-mentioned each raw material component
There is larger impact with resilience performance, support performance and the usage comfort for comparing the soft bubble of PU obtained, when each raw material component
For burden control in above range, the PU of acquisition is soft, and bubble has preferable resilience performance, support performance and usage comfort.
The present invention is further arranged to: further including 18-24 parts of fiber reinforced composition, wherein by weight by weight
Part meter, fiber reinforced composition include 11.4-15.4 parts of spandex fibre, 10-14 parts of nylon fibre, 5.2-9.4 parts of polyester fiber,
5.6-7.2 parts of bamboo fiber, 3.3-4.2 parts of coupling agent.
By using above scheme, spandex fibre is also known as polyurethane fibre, has deep drawing quality (500-
700%), (200% extends, 95-99%'s for low elastic modulus (200% elongation, 0.04-0.12g/ denier) and elastic recovery rate
Response rate), by preparing in raw material for the spandex addition soft bubble of PU of suitable proportion, spandex, energy is distributed with inside the soft bubble of the PU of acquisition
Enough promote the elasticity and resilience of the soft bubble of PU.Moreover, spandex fibre is a kind of polyurethane fiber, and it is similarly polyurethane product
The soft bubble matrix of PU have preferable binding performance, this further enhance fiber it is soft to PU bubble matrix connection effect.
Nylon fibre is also known as Fypro, has preferable elastic recovery rate and fatigue durability, the addition of nylon fibre
The resilience of the soft bubble of PU can be further effectively improved, and the soft bubble of PU is enabled to keep higher rebound degree for a long time.
Polyester fiber has many advantages, such as elastic high, intensity height, modulus height, good conformality and heat resistance, can not only
Cooperate with spandex fibre, nylon fibre, the common resilience performance and compression strength for improving the soft bubble of PU, additionally it is possible to improve the soft bubble of PU
Heat resistance.
Bamboo fiber has preferable flexibility, stronger intensity, excellent anti-ultraviolet function, also resists with excellent
Bacterium, deodorization, bactericidal effect.The addition of bamboo fiber is other than it can be improved the comfort level of the soft bubble of PU, resistance to compression is slight, moreover it is possible to mention
The anti-ultraviolet function of the high soft bubble of PU mitigates the metachromatism of the soft bubble of PU in use.In addition, the sterilization of bamboo fiber removes
Smelly function can also effectively improve the sanitation performance of the soft bubble of PU, for Sofa cushion etc., be conducive to the cleannes for keeping cushion, promote
Human health.
Spandex fibre, nylon fibre, polyester fiber and bamboo fiber, four kinds of fibers are added with suitable proportion, Neng Gouli
With the property of each own threadiness, works in coordination and play the role of being coupled the soft bubble matrix of PU, to improve the soft bubble of PU
Globality, and thus promote the resilience performance and support performance of the soft bubble of PU.The addition of coupling agent can be to above-mentioned four kinds of fibers
Surface is modified processing, to further improve the inner Join and globality of the soft bubble of PU, further promotes the soft bubble of PU
Resilience performance and support performance.
The present invention is further arranged to: the fiber reinforced composition further includes 2.2-3.5 parts of antioxidant.
By using above scheme, the addition of antioxidant can not only improve the antioxygenic property of the soft bubble matrix of PU, also
The antioxygenic property that above-mentioned four kinds of fibers can be improved, mitigates the metachromatism of the soft bubble of PU, moreover it is possible to which the soft bubble of PU is protected for a long time
Hold excellent mechanical property.
The present invention is further arranged to: by weight, fiber reinforced composition includes 13.2 parts of spandex fibre, polyamide fibre fibre
Tie up 13.5 parts, 6.9 parts of polyester fiber, 6.3 parts of bamboo fiber, 3.7 parts of coupling agent, 2.8 parts of antioxidant.
The present invention is further arranged to: the specification of above-mentioned four kinds of fibers is 100-150D, and length is 4-6mm.
The present invention is further arranged to: the coupling agent selects silane coupling agent.
The present invention is further arranged to: the antioxidant selects ultraviolet absorbent UV-531.
The purpose of the present invention two is: a kind of preparation process of above-mentioned flexible polyurethane foam plastic product is provided, including
There is following preparation step: flexible polyurethane foam plastic product is made through foamable reaction after each component is mixed, the temperature before mixing
Degree is 25-30 DEG C.
The purpose of the present invention three is: a kind of preparation process of above-mentioned flexible polyurethane foam plastic product is provided, it is special
Sign is, includes following preparation step:
The each raw material component of fiber reinforced composition is mixed 20-30min under 500-600r/min, obtained by S1 in parts by weight
Obtain fiber reinforced composition；
Flexibel polyurethane bubble is made through foamable reaction after mixing fiber reinforced composition with remaining ingredient in parts by weight in S2
Foam plastic products, the temperature before mixing are 25-30 DEG C.
By using above scheme, it is modified that surface is first carried out to above-mentioned four kinds of fibers using coupling agent, then with remaining ingredient
Mixing can further increase the binding force between above-mentioned four kinds of fibers and the soft bubble matrix of PU, improve the globality of the soft bubble of PU, from
And improve the resilience performance and support performance of the soft bubble of PU.
In conclusion the invention has the following advantages:
1, the proportion of each raw material component is scientific and reasonable, and the PU of acquisition is soft, and bubble has preferable resilience performance, support performance and use
Comfort level；
2, four kinds of spandex fibre, nylon fibre, polyester fiber and bamboo fiber fibers are added with suitable proportion, can be using respectively
The property of own threadiness works in coordination and plays the role of being coupled the soft bubble matrix of PU, to improve the entirety of the soft bubble of PU
Property, and thus further promote the resilience performance and support performance of the soft bubble of PU.
Specific embodiment
Invention is further described in detail below.
Embodiment 1
A kind of flexible polyurethane foam plastic product:
By weight, preparing raw material includes following components: 100 parts of polyether polyol, 30 parts of toluene di-isocyanate(TDI), water 1
Part, 0.1 part of triethylene diamine, 0.1 part of stannous octoate, 0.3 part of silicone oil；
Preparation step includes: that flexible polyurethane foam plastic product, each original is made through foamable reaction after mixing each raw material component
Temperature before expecting component mixing is 25 DEG C.
Embodiment 2
A kind of flexible polyurethane foam plastic product:
By weight, preparing raw material includes following components: 100 parts of polyether polyol, 35 parts of toluene di-isocyanate(TDI), water 2
Part, 0.2 part of triethylene diamine, 0.2 part of stannous octoate, 0.5 part of silicone oil；
Preparation step includes: that flexible polyurethane foam plastic product, each original is made through foamable reaction after mixing each raw material component
Temperature before expecting component mixing is 25 DEG C.
Embodiment 3
A kind of flexible polyurethane foam plastic product:
By weight, preparing raw material includes following components: 100 parts of polyether polyol, 40 parts of toluene di-isocyanate(TDI), water
2.5 parts, 0.3 part of triethylene diamine, 0.25 part of stannous octoate, 0.6 part of silicone oil；
Preparation step includes: that flexible polyurethane foam plastic product, each original is made through foamable reaction after mixing each raw material component
Temperature before expecting component mixing is 27 DEG C.
Embodiment 4
A kind of flexible polyurethane foam plastic product:
By weight, preparing raw material includes following components: 100 parts of polyether polyol, 40 parts of toluene di-isocyanate(TDI), water 3
Part, 0.4 part of triethylene diamine, 0.3 part of stannous octoate, 0.7 part of silicone oil；
Preparation step includes: that flexible polyurethane foam plastic product, each original is made through foamable reaction after mixing each raw material component
Temperature before expecting component mixing is 27 DEG C.
Embodiment 5
A kind of flexible polyurethane foam plastic product:
By weight, preparing raw material includes following components: 100 parts of polyether polyol, 50 parts of toluene di-isocyanate(TDI), water 5
Part, 0.5 part of triethylene diamine, 0.5 part of stannous octoate, 1.5 parts of silicone oil；
Preparation step includes: that flexible polyurethane foam plastic product, each original is made through foamable reaction after mixing each raw material component
Temperature before expecting component mixing is 30 DEG C.
Embodiment 6
A kind of flexible polyurethane foam plastic product, the difference with embodiment 3 are:
By weight, preparing raw material further includes 18 parts of fiber reinforced composition, wherein by weight, fiber reinforcement combination
Object includes 11.4 parts of spandex fibre, 10 parts of nylon fibre, 5.2 parts of polyester fiber, 5.6 parts of bamboo fiber, 3.3 parts of coupling agent, resists
2.2 parts of oxidant, coupling agent selects silane coupling agent, and antioxidant selects ultraviolet absorbent UV-531, the rule of four kinds of fibers
Lattice are 100D, and length is 4mm；
Preparation step includes:
The each raw material component of fiber reinforced composition is mixed under 500r/min 20min, obtains fiber by S1 in parts by weight
Enhance composition；
Flexibel polyurethane bubble is made through foamable reaction after mixing fiber reinforced composition with remaining ingredient in parts by weight in S2
Foam plastics, the temperature before mixing are 25 DEG C.
Embodiment 7
A kind of flexible polyurethane foam plastic product, the difference with embodiment 3 are:
By weight, preparing raw material further includes 20 parts of fiber reinforced composition, wherein by weight, fiber reinforcement combination
Object include 13.2 parts of spandex fibre, 13.5 parts of nylon fibre, 6.9 parts of polyester fiber, 6.3 parts of bamboo fiber, 3.7 parts of coupling agent,
2.8 parts of antioxidant, coupling agent selects silane coupling agent, and antioxidant selects ultraviolet absorbent UV-531, four kinds of fibers
Specification is 120D, and length is 5mm；
Preparation step includes:
The each raw material component of fiber reinforced composition is mixed under 550r/min 25min, obtains fiber by S1 in parts by weight
Enhance composition；
Flexibel polyurethane bubble is made through foamable reaction after mixing fiber reinforced composition with remaining ingredient in parts by weight in S2
Foam plastics, the temperature before mixing are 27 DEG C.
Embodiment 8
A kind of flexible polyurethane foam plastic product, the difference with embodiment 3 are:
By weight, preparing raw material further includes 24 parts of fiber reinforced composition, wherein by weight, fiber reinforcement combination
Object includes 15.4 parts of spandex fibre, 14 parts of nylon fibre, 9.4 parts of polyester fiber, 7.2 parts of bamboo fiber, 4.2 parts of coupling agent, resists
3.5 parts of oxidant, coupling agent selects silane coupling agent, and antioxidant selects ultraviolet absorbent UV-531, the rule of four kinds of fibers
Lattice are 150D, and length is 6mm；
Preparation step includes:
The each raw material component of fiber reinforced composition is mixed under 600r/min 30min, obtains fiber by S1 in parts by weight
Enhance composition；
Flexibel polyurethane bubble is made through foamable reaction after mixing fiber reinforced composition with remaining ingredient in parts by weight in S2
Foam plastics, the temperature before mixing are 30 DEG C.
Embodiment 9
A kind of flexible polyurethane foam plastic product, the difference with embodiment 7 are: directly by all raw material groups in preparation step
Divide mixing, flexible polyurethane foam plastic product is made in foamed react.
The soft bubble of the flexible polyurethane foam plastic product that performance detection prepares embodiment 1-9, i.e. PU carries out performance inspection
It surveys, detection project includes that collapse performance, resilience performance and stretching tear resistance, the detection of apparent density, embodiment comfort are tied
Fruit is as shown in table 1.
The performance test results of 1 flexible polyurethane foam plastic product of table
According to table 1, every detection data of the soft bubble of PU of embodiment 1-9 preparation meets high-class product standard, illustrates of the invention
It matches scientific and reasonable, can effectively promote the apparent density of the soft bubble of PU, support performance, resilience performance and stretch tear resistance.
The component proportion that comparative example 1-5 can be seen that the soft bubble of PU all has larger impact to its properties,
In, the performance for the soft bubble of PU that the component proportion in embodiment 3 obtains is best.
Comparative example 3,6-8 can be seen that embodiment 6-8 preparation the soft bubble of PU collapse performance, resilience performance and
Stretching tear resistance compared with embodiment 2 has promotion by a relatively large margin, demonstrate spandex fibre proposed by the present invention, nylon fibre,
Improvement effect of the addition of four kinds of fibers of polyester fiber and bamboo fiber and coupling agent bubble performance soft to PU.
Comparative example 7,9 is as can be seen that in advance using coupling agent to spandex fibre, nylon fibre, polyester fiber and bamboo
Four kinds of fibers of fibrinogen are modified, and are conducive to promote the support performance of the soft bubble of PU, resilience performance and are stretched tear resistance.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (10)
1. a kind of flexible polyurethane foam plastic product, it is characterised in that: include following components by weight: polyethers is more
100 parts of first alcohol, 30-50 parts of toluene di-isocyanate(TDI), 1-5 parts of water, 0.1-0.5 parts of triethylene diamine, stannous octoate 0.1-0.5
Part, 0.3-1.5 parts of silicone oil.
2. a kind of flexible polyurethane foam plastic product according to claim 1, it is characterised in that: by weight, packet
Following components is included: 100 parts of polyether polyol, 35-40 parts of toluene di-isocyanate(TDI), 2-3 parts of water, triethylene diamine 0.2-0.4
Part, 0.2-0.3 parts of stannous octoate, 0.5-0.7 parts of silicone oil.
3. a kind of flexible polyurethane foam plastic product according to claim 1, it is characterised in that: by weight, also
Including 18-24 parts of fiber reinforced composition, wherein by weight, fiber reinforced composition includes spandex fibre 11.4-15.4
Part, 10-14 parts of nylon fibre, 5.2-9.4 parts of polyester fiber, 5.6-7.2 parts of bamboo fiber, 3.3-4.2 parts of coupling agent.
4. a kind of flexible polyurethane foam plastic product according to claim 3, it is characterised in that: the fiber reinforcement group
Closing object further includes 2.2-3.5 parts of antioxidant.
5. a kind of flexible polyurethane foam plastic product according to claim 4, it is characterised in that: by weight, fine
Dimension enhancing composition includes 13.2 parts of spandex fibre, 13.5 parts of nylon fibre, 6.9 parts of polyester fiber, 6.3 parts of bamboo fiber, idol
Join 3.7 parts of agent, 2.8 parts of antioxidant.
6. -5 any a kind of flexible polyurethane foam plastic product according to claim 1, it is characterised in that: described above-mentioned
The specification of four kinds of fibers is 100-150D, and length is 4-6mm.
7. -5 any a kind of flexible polyurethane foam plastic product according to claim 1, it is characterised in that: the coupling
Silane coupling agent is selected in agent.
8. -5 any a kind of flexible polyurethane foam plastic product according to claim 1, it is characterised in that: the antioxygen
Agent selects ultraviolet absorbent UV-531.
9. a kind of preparation process of flexible polyurethane foam plastic product of any of claims 1 or 2, which is characterized in that including
There is following preparation step: flexible polyurethane foam plastic product is made through foamable reaction after each component is mixed, the temperature before mixing
Degree is 25-30 DEG C.
10. a kind of preparation process of any flexible polyurethane foam plastic product of claim 3-8, which is characterized in that
Include following preparation step:
The each raw material component of fiber reinforced composition is mixed 20-30min under 500-600r/min, obtained by S1 in parts by weight
Obtain fiber reinforced composition；
Flexibel polyurethane bubble is made through foamable reaction after mixing fiber reinforced composition with remaining ingredient in parts by weight in S2
Foam plastic products, the temperature before mixing are 25-30 DEG C.
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| CN111434703A (en) * | 2019-01-12 | 2020-07-21 | 天津市海神聚氨酯制品有限公司 | TDI system soft polyurethane foam plastic product and production method and production system thereof |
| CN111592752A (en) * | 2020-06-10 | 2020-08-28 | 东莞市腾崴塑胶制品有限公司 | Bamboo fiber sponge and preparation method thereof |
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