CN106553297A - A kind of palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent - Google Patents
A kind of palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent Download PDFInfo
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- CN106553297A CN106553297A CN201610913347.4A CN201610913347A CN106553297A CN 106553297 A CN106553297 A CN 106553297A CN 201610913347 A CN201610913347 A CN 201610913347A CN 106553297 A CN106553297 A CN 106553297A
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- releasing agent
- silicones
- palm wax
- rebound polyurethane
- agent
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/60—Releasing, lubricating or separating agents
- B29C33/62—Releasing, lubricating or separating agents based on polymers or oligomers
- B29C33/64—Silicone
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent, are related to a kind of releasing agent, and the releasing agent of the present invention is prepared from silicones compounding by palm wax.The present invention is introduced into palm wax in high-rebound polyurethane releasing agent first, the Compositional type polyurethane release agent prepared is one-level to the stripping result of high-rebound polyurethane product on cast-aluminum die, release times are at least up to more than 12 times, and can effectively improve the abscess non-uniform phenomenon that traditional high-rebound polyurethane releasing agent is caused, reduction in the numbers of seconds, while its preparation process is simple, it is easy to manipulate, disclosure satisfy that use requirement of the complicated high-rebound polyurethane product to releasing agent.
Description
Technical field
The present invention relates to a kind of releasing agent, more particularly to a kind of palm wax and silicones Compositional type high-rebound polyurethane
Brewage releasing agent.
Background technology
High-rebound polyurethane is a kind of flex foam of function admirable.Except having light common soft alveolar substance, softness, ratio
Outside the advantages of intensity is high, thermal insulation is good, the comfortableness also with higher resilience, the feel of similar latex foam and height,
Therefore it is widely used in the industries such as automobile, furniture.Need using releasing agent to prevent poly- ammonia in polyurethane foam forming process
Adhewsive action between ester foam and mould.So exploitation stripping result it is good, be difficult to remain in die surface, environmental protection, safety, and
Can make the new liquid releasing agent that foamed product surface has open-celled structure that there is important practical significance.
Polyurethane release agent most-often used in the market is wax system releasing agent and silicon systems releasing agent.For example：《The Inner Mongol
Petrochemical industry》In deliver within 2007《Emulsified paraffin release agent formulation selection》, using phase transfer emulsion process, with paraffin, emulsification
Agent, water are prepared for a kind of aqueous release agent for primary raw material.Test result indicate that, when emulsifying temperature be 80 DEG C, mixing speed be
It is 7%, assistant for emulsifying agent consumption releasing agent outward appearance prepared when being 5% that 3000r/min, paraffin consumption are 10%, stearic content
Uniformly, fine and smooth, stability is preferable.CN201510031671.9 discloses a kind of releasing agent main component for paraffin 5-13 parts, firmly
Resin acid 2-6 parts, potassium hydroxide 3-7 parts, AEO 4-8 parts, aluminium dihydrogen phosphate 5-9 parts, Graphene 2-7 parts,
Epoxy resin 3-9 parts, zinc dialkyl dithiophosphate 8-15 parts, coupling agent 2-5 parts.It is de- using polyurethane obtained in said ratio
Although mould agent use when can the smoothly demoulding, due to the fusing point of common paraffin itself it is relatively low, Jing after being used for multiple times, mold temperature
Raise, be also easy to produce decomposition and pollute mould, affect release times.《Polyurethane industrial》Deliver within 2005《Microporous polyurethane bullet
Development of the gonosome molding with silicone oil type releasing agent》, it is main using octamethylcy-clotetrasiloxane (D4), hexamethyl siloxane (MM) etc.
Raw material is, at 85 ~ 95 DEG C, to have synthesized the silicon systems with part branched structure, viscosity for 160 ~ 200 mPas and taken off in reaction temperature
Mould agent.In research discovery silicone oil, at 39.55% or so, stripping result is best for methyl mass fraction.WO2004033172 is disclosed
A kind of semipermanent aqua type silicon mold release agent, using alkoxy polymers and appropriate crosslinking agent, wetting agent, thickener and dispersion
The mold release compositions that agent is re-dubbed, for the demoulding of the moulded parts such as polyurethane, with more good stripping result.However,
For complicated high-rebound polyurethane foaming product, the foam process for being typically due to high-rebound polyurethane is inherently different from tradition
The production technology of solid polyurethane, influence factor are more, and its foaming quality directly affects product quality, and its product corner angle is multiple
It is miscellaneous, careful, it is high for dimensional stability and surface smoothness requirements, if which can be caused using conventional waxes system or silicon systems releasing agent
Rate of closed hole increases, and defect rate is raised, and release times are reduced, the mould easily difficult problem such as pollution.
The content of the invention
It is an object of the invention to provide a kind of palm wax and the silicones Compositional type high-rebound polyurethane foaming product demoulding
Agent, the present invention are introduced into the palm wax with more preferable fineness and stability in high-rebound polyurethane article removal agent.With bubble
Pore size distribution is uniform, size is stable, and release times are high, the features such as little to mold fouling, meets complicated tool polyurethane foaming products pair
The requirement of releasing agent performance.
The purpose of the present invention is achieved through the following technical solutions：
A kind of palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent, the releasing agent composition include silicon tree
Fat, dispersing aid, solvent, modified palm wax；Releasing agent is the mixture of a kind of modified palm wax and silicones, and which is in releasing agent
In shared mass percent concentration be 2.0%-10.0%；Silicones is methyl silicon resin, phenyl polysiloxane, aminomethyl phenyl silicon tree
The mixture of fat, one or more materials of methyl vinyl silicone, its shared mass percent concentration in releasing agent is
0.5%-5.00%；Dispersing aid be domiphen second lactone, TWEEN-80, SPAN-80, AEO,
The mixture of one or more materials in neopelex, zinc stearate, octyl phenyl polyoxyethylene ether, which is de-
In mould agent, shared mass percent concentration is 0.1%-5.0%.
A kind of described palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent, the solvent include
The mixing of one or more materials in methyl alcohol, ethanol, dimethylbenzene, normal heptane, cyclohexanone, isopropanol, white oil, 120# solvent naphthas
Thing.
A kind of described palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent, the releasing agent lead to
Cross following method to prepare：
（1）Palm wax and silicones are heated into melting in mass ratio under the conditions of 90-100 DEG C, after melting completely, continues stirring
3-10 minutes；
（2）By step（1）Product be cooled to 80-90 DEG C, and add the mixing of one or more dispersing aiies of quality proportioning
Thing, the Jing ultrasonic oscillations 30-180 seconds under selected temperature, then with high shear homogeneous emulsifying machine in 10000-3000r/min bars
Under part, fully emulsified 0.5-3h can obtain Compositional type high-rebound polyurethane foaming product releasing agent；
（3）Solvent is added to be diluted to concentration scope at room temperature, you can direct spraying is used.
Advantages of the present invention with effect is：
The present invention is introduced into the palm wax with more preferable fineness and stability in high-rebound polyurethane article removal agent.In dispersion
Under the collective effect of the auxiliary agents such as agent, solvent, the new type release agent that palm wax is formed with silicones can improve traditional high rebound foaming
The abscess non-uniform phenomenon that polyurethane release agent is caused, with distribution of cells is uniform, size is stable, release times are high, to mould
The features such as polluting little, and the preparation process is simple of the releasing agent, it is easy to manipulate, emulsion storage stability is good, can meet multiple
Requirement of the polyurethane foaming products to releasing agent performance of miscellaneous tool.
Description of the drawings
Fig. 1 is the palm wax prepared by embodiment 1 and silicones Compositional type polyurethane release agent stripping result and aperture point
Butut；
Fig. 2 is the single silicones polyurethane release agent stripping result of comparative example and graph of pore diameter distribution.
Specific embodiment
With reference to embodiment, the present invention is described in detail.
Embodiment 1：By 3.0wt.% palm waxs, 1.0wt.% silicones 95 DEG C heating melt, it is fusion be completely melt after, after
Continuous stirring 3 minutes, subsequently cools the temperature to 85 DEG C, adds the SPAN80 of the Tween80 and 0.4wt.% of 0.4wt.%, then by breast
Liquid is emulsified 1 hour with high shear homogeneous emulsifying machine Jing after ultrasonic oscillation 90 seconds（Mixing speed is 20000r/min）, finally by
55.2wt.% solvents are gradually added dropwise, thick shape emulsion as palm wax are formed and is taken off with silicones Compositional type high-rebound polyurethane foaming product
Mould agent stoste, by being added during use at room temperature after the normal heptane of 40.0wt.%, direct spraying is used.
Stability of emulsion：Jing centrifuges 3000r/min is centrifuged 5 minutes, the prepared demoulding agent emulsion of the formula not breakdown of emulsion, no
Layering.
Stripping result：Polyurethane blowing mold is warming up to into 60 DEG C, in its surface even application releasing agent, and is blown with spray gun
Dry solvent, then high-rebound polyurethane A, B material is pressed into 5:3 mass ratio, quickly stirs and pours in mould, 10 points of thermal insulation foaming
Clock, molds and takes out polyurethane foam product.The releasing agent prepared by the formula is one-level to high-rebound polyurethane stripping result
（Upper and lower mould can be rapidly separated, die surface non-foam product residual, and product surface is smooth, and corner angle are clean and tidy, without breakage）.It is de-
Mould number of times is 12 times.
Product surface pattern is determined：On polyurethane foam product and the surface of contacting dies, its abscess is poroid in standard-sized sheet
State, poroid more uniform, non-mold release agent residual, as shown in Figure 1.
Embodiment 2：3.0wt.% palm waxs, 1.0wt.% silicones are melted in 95 DEG C of heating, it is until completely melted, fusion
After being completely melt, continue stirring 3 minutes, subsequently cool the temperature to 85 DEG C, add 0.5wt.% AEO with
Then emulsion is emulsified 1 hour Jing after ultrasonic oscillation 90 seconds by the zinc stearate of 0.5wt.% with high shear homogeneous emulsifying machine（Stir
Speed is mixed for 20000r/min）, 55.0wt.% solvents are finally gradually added dropwise, thick shape emulsion are formed and is palm wax with silicones again
Distribution type high-rebound polyurethane foaming product releasing agent stoste, by being added during use at room temperature after 40.0wt.% normal heptanes directly
Spraying is used.
Stability of emulsion：Jing centrifuges 3000r/min is centrifuged 5 minutes, the prepared demoulding agent emulsion of the formula not breakdown of emulsion, no
Layering.
Stripping result：Polyurethane blowing mold is warming up to into 70 DEG C, in its surface even application releasing agent, and is blown with spray gun
Dry solvent, then high-rebound polyurethane A, B material is pressed into 5:3 mass ratio, quickly stirs and pours in mould, 10 points of thermal insulation foaming
Clock, molds and takes out polyurethane foam product.The releasing agent prepared by the formula is one-level to high-rebound polyurethane stripping result
（Upper and lower mould can be rapidly separated, die surface non-foam product residual, and product surface is smooth, and corner angle are clean and tidy, without breakage）, take off
Mould number of times is 9 times.
Embodiment 3：By 2.0wt.% palm waxs, 2.0wt.% silicones 95 DEG C heating melt, it is fusion be completely melt after, after
Continuous stirring 3 minutes, subsequently cools the temperature to 85 DEG C, adds the SPAN80 of the Tween80 and 0.2wt.% of 0.2wt.%, then by breast
Liquid is emulsified 0.5 hour with high shear homogeneous emulsifying machine Jing after ultrasonic oscillation 100 seconds（Mixing speed is 30000r/min）, finally
55.6wt.% solvents are gradually added dropwise, thick shape emulsion are formed and is palm wax and silicones Compositional type high-rebound polyurethane foaming product
Releasing agent stoste, by being added during use at room temperature after the normal heptane of 40.0wt.%, direct spraying is used.
Stability of emulsion：Jing centrifuges 3000r/min is centrifuged 5 minutes, the prepared demoulding agent emulsion of the formula not breakdown of emulsion, no
Layering.
Stripping result：Polyurethane blowing mold is warming up to into 70 DEG C, in its surface even application releasing agent, and is blown with spray gun
Dry solvent, then high-rebound polyurethane A, B material is pressed into 5:3 mass ratio, quickly stirs and pours in mould, 10 points of thermal insulation foaming
Clock, molds and takes out polyurethane foam product.The releasing agent prepared by the formula is one-level to high-rebound polyurethane stripping result
（Upper and lower mould can be rapidly separated, die surface non-foam product residual, and product surface is smooth, and corner angle are clean and tidy, without breakage）, take off
Mould number of times is 8 times.
Embodiment 4：By 2.0wt.% palm waxs, 2.0wt.% silicones 95 DEG C heating melt, it is fusion be completely melt after, after
Continuous stirring 3 minutes, subsequently cools the temperature to 85 DEG C, adds the aliphatic polyoxyethylene of the span80 and 0.4wt.% of 0.2wt.%
Then emulsion is emulsified 1 hour Jing after ultrasonic oscillation 150 seconds by ether with high shear homogeneous emulsifying machine（Mixing speed is 20000r/
min）, 55.4wt.% solvents are finally gradually added dropwise, thick shape emulsion are formed and is palm wax and the poly- ammonia of the high resilience of silicones Compositional type
Ester foaming article removal agent stoste, by being added during use at room temperature after 40.0wt.% dimethylbenzene, direct spraying is used.
Stability of emulsion：Jing centrifuges 3000r/min is centrifuged 5 minutes, the prepared demoulding agent emulsion of the formula not breakdown of emulsion, no
Layering.
Stripping result：Polyurethane blowing mold is warming up to into 60 DEG C, in its surface even application releasing agent, and is blown with spray gun
Dry solvent, then high-rebound polyurethane A, B material is pressed into 5:3 mass ratio, quickly stirs and pours in mould, 10 points of thermal insulation foaming
Clock, molds and takes out polyurethane foam product.The releasing agent prepared by the formula is one-level to high-rebound polyurethane stripping result
（Upper and lower mould can be rapidly separated, die surface non-foam product residual, and product surface is smooth, and corner angle are clean and tidy, without breakage）.It is de-
Mould number of times is 7 times.Product surface pattern is determined：On polyurethane foam product and the surface of contacting dies, its abscess is in standard-sized sheet
Poroid state, poroid more uniform, non-mold release agent residual.
Comparative example：By 4.0wt.% silicones 95 DEG C heating melt, it is fusion be completely melt after, continue stirring 5 minutes, with
After cool the temperature to 85 DEG C, add 0.4wt.% Tween80 and 0.4wt.% SPAN80, then by emulsion Jing ultrasonic oscillation
Emulsified 1 hour with high shear homogeneous emulsifying machine after 90 seconds（Mixing speed is 20000r/min）, 55.2wt.% is finally gradually added dropwise
Solvent, forms thick shape emulsion and is single silicone type polyurethane release agent stoste, add 40.0wt.% during use at room temperature
Normal heptane after direct spraying use.
Stability of emulsion：Jing centrifuges 3000r/min is centrifuged 5 minutes, the prepared demoulding agent emulsion of the formula not breakdown of emulsion, no
Layering.
Stripping result：Polyurethane blowing mold is warming up to into 60 DEG C, in its surface even application releasing agent, and is blown with spray gun
Dry solvent, then high-rebound polyurethane A, B material is pressed into 5:3 mass ratio, quickly stirs and pours in mould, 10 points of thermal insulation foaming
Clock, molds and takes out polyurethane foam product.The releasing agent prepared by the formula is two grades to high-rebound polyurethane stripping result
（Upper and lower mould can be rapidly separated, die surface non-foam product residual, but product surface is uneven）, and polyurethane product deposits
In abscess non-uniform phenomenon, release times are 2 times, as shown in Figure 2.
The scope of the present invention is not limited by example is embodied as, the method and group in the scope of the invention also including functional equivalent
Point.All modifications made according to basic composition of the invention and preparation technology or equivalent, also fall into the claim
Within the scope of.
Claims (3)
1. a kind of palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent, it is characterised in that the demoulding
Agent composition includes silicones, dispersing aid, solvent, modified palm wax；Releasing agent is that a kind of modified palm wax is mixed with silicones
Compound, its shared mass percent concentration in releasing agent is 2.0%-10.0%；Silicones is methyl silicon resin, phenyl silicon tree
Fat, methyl phenyl silicone resin, the mixture of one or more materials of methyl vinyl silicone, its shared matter in releasing agent
Amount percent concentration is 0.5%-5.00%；Dispersing aid is domiphen second lactone, TWEEN-80, SPAN-80, fat
One or more materials in alcohol APEO, neopelex, zinc stearate, octyl phenyl polyoxyethylene ether
Mixture, its shared mass percent concentration in releasing agent is 0.1%-5.0%.
2. a kind of palm wax according to claim 1 and silicones Compositional type high-rebound polyurethane foaming product releasing agent,
Characterized in that, the solvent includes methyl alcohol, ethanol, dimethylbenzene, normal heptane, cyclohexanone, isopropanol, white oil, 120# solvent naphthas
In one or more materials mixture.
3. a kind of palm wax according to claim 1 and silicones Compositional type high-rebound polyurethane foaming product releasing agent,
Characterized in that, the releasing agent is prepared via a method which：
（1）Palm wax and silicones are heated into melting in mass ratio under the conditions of 90-100 DEG C, after melting completely, continues stirring
3-10 minutes；
（2）By step（1）Product be cooled to 80-90 DEG C, and add the mixing of one or more dispersing aiies of quality proportioning
Thing, the Jing ultrasonic oscillations 30-180 seconds under selected temperature, then with high shear homogeneous emulsifying machine in 10000-3000r/min bars
Under part, fully emulsified 0.5-3h can obtain Compositional type high-rebound polyurethane foaming product releasing agent；
（3）Solvent is added to be diluted to concentration scope at room temperature, you can direct spraying is used.
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|---|---|---|---|
| CN201610913347.4A CN106553297A (en) | 2016-10-20 | 2016-10-20 | A kind of palm wax and silicones Compositional type high-rebound polyurethane foaming product releasing agent |
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| CN107630761A (en) * | 2017-07-25 | 2018-01-26 | 中原内配集团安徽有限责任公司 | A kind of cast-in burr cylinder sleeve and its manufacture method |
| CN109593181A (en) * | 2018-12-12 | 2019-04-09 | 怀化学院 | Polyurethane foam and preparation method thereof |
| CN111016018A (en) * | 2019-12-18 | 2020-04-17 | 中交第二航务工程局有限公司 | Special external mold release agent for non-aqueous reaction type double-component foam polyurethane and preparation method thereof |
| CN111363181A (en) * | 2020-04-26 | 2020-07-03 | 东莞市鼎力薄膜科技有限公司 | Release film for heat-conducting silica gel sheet and preparation method thereof |
| CN111688079A (en) * | 2020-06-16 | 2020-09-22 | 上海力太化学有限公司 | Full-aqueous release agent for artificial plywood ecological plate |
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| CN107587003A (en) * | 2017-07-25 | 2018-01-16 | 中原内配集团安徽有限责任公司 | A kind of helical form burr type aluminium alloy cylinder sleeve and preparation method thereof |
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| CN111363181A (en) * | 2020-04-26 | 2020-07-03 | 东莞市鼎力薄膜科技有限公司 | Release film for heat-conducting silica gel sheet and preparation method thereof |
| CN111688079A (en) * | 2020-06-16 | 2020-09-22 | 上海力太化学有限公司 | Full-aqueous release agent for artificial plywood ecological plate |
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Application publication date: 20170405 |