CN103407047B - Mold release agent for bicolor dual-density polyurethane sole - Google Patents

Mold release agent for bicolor dual-density polyurethane sole Download PDF

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Publication number
CN103407047B
CN103407047B CN201310361446.2A CN201310361446A CN103407047B CN 103407047 B CN103407047 B CN 103407047B CN 201310361446 A CN201310361446 A CN 201310361446A CN 103407047 B CN103407047 B CN 103407047B
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sole
mold release
density
dual
activity
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CN103407047A (en
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杜春毅
温文宪
林剑
帅丰平
陈俊
林孝宾
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Zhejiang Huafeng new material Co., Ltd
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ZHEJIANG HUAFENG NEW MATERIALS Co Ltd
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Abstract

The invention discloses a mold release agent for a bicolor dual-density polyurethane sole. The mold release agent is characterized in that a mixed solvent consisting of kerosene and a polar solvent comprises a mixture of wax with mold release activity and silicone oil with mold release activity. Compared with the prior art, the mold release agent has the following advantages: the defect of single mold release agent can be overcome through mixing the wax with mold release activity and the silicone oil with mold release activity, the polar solvent is added and can be adsorbed on the surface of an outsole in the forming process of the sole, tiny micropores are formed on the surface of the outsole, so that the stripping strength of the outsole and a midsole can be enhanced, i.e., the adhesion of the outsole and a midsole can be enhanced, the production efficiency for applying the mold release agent for producing the dual-density polyurethane sole is higher than that of applying a polyethylene release type method.

Description

Mold release agent for bicolor dual-density polyurethane sole
Technical field
The present invention relates to a kind of polyurethane shoe-sole releasing agent.
Background technology
The double-colored polyurethane shoe-sole large end, is different with color of the middle end, and line of demarcation is clear, aesthetics and stylishness stronger.The large end of Duel-density polyurethane sole, is different with the compact density at the middle end, the compact density at the large end is higher, compact structure, ensure that the intensity of sole, can be able to take the friction on ground within the longer time, extend sole service life, wherein the compact density at the end is lower, quality is soft, ensure that the snugness of fit of user.The large end of its densification of Duel-density polyurethane sole and the combination at the light comfortable middle end make polyurethane shoe-sole integrate comfortable light and security, are widely used at the bottom of safety shoe.
The patent No. is the production method disclosing a kind of dual-density sole in the Chinese patent of ZL200910106740.2.This method overcomes the connector that different densities ectonexine sole commonly uses and fixes or gluing defective workmanship, and ectonexine sole combines firmly, production cost is lower.But in its production process, need to be lining with covering polyethylene film in polyurethane, then taken out again, polyethylene film plays release (i.e. the demoulding) effect.This method production efficiency is low.If directly at the releasing agent that the upper and lower surface spraying of die for shoe-sole is conventional, then the releasing agent of mould upper surface easily remains the upper surface at the polyurethane large end and forms separation layer, affects the adhesive fastness at the large end and the middle end, reduces peel strength.
Application number is the manufacture craft disclosing a kind of two-color dual-density sole in the Chinese patent application of 201210536146.9, the EVA expanded material of two kinds of different colours and different hardness is injected in upper and lower die cavity respectively simultaneously, dividing plate is placed with between upper and lower two moulds, this dividing plate plays film in support and presses down and prevent bi-material from altering look, and after removing out dividing plate, upper and lower two pieces of templates bonding together.The time that this technical process extracts dividing plate is very crucial, and the time is too short, and patrix presses down, and bi-material alters look, and the time is oversize, affects the peel strength of the sole made.The unexposed extraction dividing plate time in this patent application, and different operating personnel may affect outward appearance and the performance of sole because of the impact extracting dividing plate factor.
Summary of the invention
The object of this invention is to provide a kind of mold release agent for bicolor dual-density polyurethane sole, to overcome the deficiencies in the prior art.
Described mold release agent for bicolor dual-density polyurethane sole, is characterized in that: in the mixed solvent that kerosene and polar solvent form, the wax containing demoulding activity and the silicon oil mixture containing demoulding activity;
The described wax containing demoulding activity is 0.8 ~ 1:1 with the weight ratio of the silicone oil containing demoulding activity;
The weight ratio of described kerosene and polar solvent is 8 ~ 18:1;
Described kerosene weight consumption is 10 ~ 50:1 with the weight ratio of the wax containing demoulding activity and the silicon oil mixture containing demoulding activity;
The described wax containing demoulding activity is selected from microcrystalline wax;
The described silicone oil containing demoulding activity is methyl-silicone oil, hydroxy silicon oil or aminoethylaminopropyl dimethyl silicone polymer;
Described polar solvent is one or more in DMF, ethyl acetate, acetonitrile or pyridine;
Described two-color dual-density polyurethane release agent, can be used for preparing two-color dual-density polyurethane shoe-sole, application process, comprises the steps:
(1) releasing agent described in the upper and lower surface spraying of the large bottom die of sole;
(2) in the die cavity of outsole molds, the polyurethane resin of the first density first look is injected to form the large end;
(3) when the large end is shaping, open large bottom die upper cover, inject the polyurethane resin of the second density second look, middle bottom die of closing the in type large end, with the end in being formed;
(4) when the middle end is shaping, open mould, the demoulding is taken out, and namely forms two-color dual-density polyurethane shoe-sole.
The present invention has the following advantages relative to prior art: the defect being overcome single releasing agent by the mixing of microcrystalline wax and silicone oil, add polar solvent, in Sole moulding process, polar solvent can be adsorbed in Large sole shoes basal surface on a small quantity, minimum micropore is formed at Large sole shoes basal surface, increase the peel strength at the large end and the middle end, namely improve the cementability at the large end and the middle end, use this releasing agent to produce the production efficiency of Duel-density polyurethane sole higher than the method using polyethylene release.
Specific implementation method
Below by embodiment, the present invention is specifically described, is only used to further illustrate the present invention, can not limiting the scope of the present invention be interpreted as.The implementation condition adopted in embodiment can do some nonessential improvement and adjustment according to the condition of concrete producer and requirement.
Embodiment 1
In the container of 1L, add the microcrystalline wax of 4.0g, the methyl-silicone oil of 5.0g, the kerosene of the DMF of 22.9g, the ethyl acetate of 23g, 404.1g mixes, obtained releasing agent 1.
Embodiment 2
In the container of 1L, add the microcrystalline wax of 20.0g, the methyl-silicone oil of 20.0g, the kerosene of the DMF of 22.0g, the ethyl acetate of 22.0g, 356.0g mixes, obtained releasing agent 2.
Embodiment 3
In the container of 1Ll, add the microcrystalline wax of 6.0g, the methyl-silicone oil of 6.0g, the kerosene of the DMF of 8.0g, the ethyl acetate of 7.6.0g, 284.4g mixes, obtained releasing agent 3.
Embodiment 4
In the container of 1L, add the microcrystalline wax of 6.0g, the methyl-silicone oil of 6.0g, the kerosene of the DMF of 12.0g, the ethyl acetate of 12.0g, 276.0g mixes, obtained releasing agent 4.
Embodiment 5
Releasing agent 1 is poured in releasing agent spray gun cabin.With spray gun after the mould upper and lower surface even application releasing agent at the polyurethane shoe-sole large end, the first density first look polyurethane resin reaction is injected shaping in mould, forming temperature is 48 DEG C, molding time is after 3 ~ 4min, opens large bottom die upper cover, middle bottom die is placed at large the end, the polyurethane resin reaction of injecting the second density second look in middle bottom die is shaping, forming temperature is 48 DEG C, and molding time is 4min, obtained two-color dual-density polyurethane shoe-sole after the demoulding.Observe sole epidermis quality, use the peel strength of GB/T3903.29-2008 method test Duel-density polyurethane sole.
Embodiment 6
Releasing agent 2 is poured in releasing agent spray gun cabin.With spray gun after the mould upper and lower surface even application releasing agent of polyurethane shoe-sole outer bottom, the first density first look polyurethane resin reaction is injected shaping in mould, forming temperature is 45 DEG C, molding time is after 3 ~ 4min, opens large bottom die upper cover, middle bottom die is placed at large the end, the polyurethane resin reaction of injecting the second density second look in middle bottom die is shaping, forming temperature is 45 DEG C, and molding time is 3min, obtained two-color dual-density polyurethane shoe-sole after the demoulding.Observe sole epidermis quality, use the peel strength of GB/T3903.29-2008 method test Duel-density polyurethane sole.
Embodiment 6
Releasing agent 2 is poured in releasing agent spray gun cabin.With spray gun after the mould upper and lower surface even application releasing agent of polyurethane shoe-sole outer bottom, the first density first look polyurethane resin reaction is injected shaping in mould, forming temperature is 45 ~ 50 DEG C, molding time is after 3 ~ 4min, opens large bottom die upper cover, middle bottom die is placed at large the end, the polyurethane resin reaction of injecting the second density second look in middle bottom die is shaping, forming temperature is 50 DEG C, and molding time is 4min, obtained two-color dual-density polyurethane shoe-sole after the demoulding.Observe sole epidermis quality, use the peel strength of GB/T3903.29-2008 method test Duel-density polyurethane sole.
Embodiment 7
Releasing agent 3 is poured in releasing agent spray gun cabin.With spray gun after the mould upper and lower surface even application releasing agent of polyurethane shoe-sole outer bottom, the first density first look polyurethane resin reaction is injected shaping in mould, forming temperature is 45 DEG C, molding time is after 4min, opens large bottom die upper cover, middle bottom die is placed at large the end, the polyurethane resin reaction of injecting the second density second look in middle bottom die is shaping, forming temperature is 50 DEG C, and molding time is 4min, obtained two-color dual-density polyurethane shoe-sole after the demoulding.Observe sole epidermis quality, use the peel strength of GB/T3903.29-2008 method test Duel-density polyurethane sole.
Embodiment 8
Releasing agent 4 is poured in releasing agent spray gun cabin.With spray gun after the mould upper and lower surface even application releasing agent of polyurethane shoe-sole outer bottom, the first density first look polyurethane resin reaction is injected shaping in mould, forming temperature is 50 DEG C, molding time is after 3min, opens large bottom die upper cover, middle bottom die is placed at large the end, the polyurethane resin reaction of injecting the second density second look in middle bottom die is shaping, forming temperature is 50 DEG C, and molding time is 3min, obtained two-color dual-density polyurethane shoe-sole after the demoulding.Observe sole epidermis quality, use the peel strength of GB/T3903.29-2008 method test Duel-density polyurethane sole.
Comparative example 1
In the container of 1L, add the microcrystalline wax of 6.0g, the methyl-silicone oil of 6.0g, the kerosene of 300.0g mixes, obtained releasing agent 5.
Releasing agent 5 is poured in releasing agent spray gun cabin.With spray gun after the mould upper and lower surface even application releasing agent of polyurethane shoe-sole outer bottom, the first density first look polyurethane resin reaction is injected shaping in mould, forming temperature is 45 DEG C, molding time is after 4min, opens large bottom die upper cover, middle bottom die is placed at large the end, the polyurethane resin reaction of injecting the second density second look in middle bottom die is shaping, forming temperature is 40 DEG C, and molding time is 3min, obtained two-color dual-density polyurethane shoe-sole after the demoulding.Observe sole epidermis quality, use the peel strength of GB/T3903.29-2008 method test Duel-density polyurethane sole.
In embodiment, microcrystalline wax is MULTIWAX W445
Embodiment 5 ~ 8 test result lists in table I.
Table I
Embodiment 5 Embodiment 6 Embodiment 7 Embodiment 8 Comparative example 1
Large end density (g/cm 3) 1.0 1.0 1.0 1.0 1.0
Color of the large end Black Black Black Black Black
Middle end density (g/cm 3 0.45 0.45 0.45 0.45 0.45
Color of the middle end White White White White White
Sole epidermis Light Light Light Light Light
Peel strength (kN/m) 5.2 5.3 4.9 5.0 3.3

Claims (3)

1. mold release agent for bicolor dual-density polyurethane sole, is characterized in that, in the mixed solvent that kerosene and polar solvent form, and the wax containing demoulding activity and the silicon oil mixture containing demoulding activity;
The described wax containing demoulding activity is 0.8 ~ 1:1 with the weight ratio of the silicone oil containing demoulding activity;
The weight ratio of described kerosene and polar solvent is 8 ~ 18:1;
Described kerosene weight consumption is 10 ~ 50:1 with the weight ratio of the wax containing demoulding activity and the silicon oil mixture containing demoulding activity;
The described wax containing demoulding activity is selected from microcrystalline wax;
The described silicone oil containing demoulding activity is methyl-silicone oil, hydroxy silicon oil or aminoethylaminopropyl dimethyl silicone polymer;
Described polar solvent is one or more in DMF, ethyl acetate, acetonitrile or pyridine.
2. the application of mold release agent for bicolor dual-density polyurethane sole according to claim 1, is characterized in that, for the preparation of two-color dual-density polyurethane shoe-sole.
3. application according to claim 2, is characterized in that, application process comprises the steps:
(1) releasing agent described in the upper and lower surface spraying of the large bottom die of sole; (2) in the die cavity of outsole molds, the polyurethane resin of the first density first look is injected to form the large end; (3) when the large end is shaping, open large bottom die upper cover, inject the polyurethane resin of the second density second look, middle bottom die of closing the in type large end, with the end in being formed; (4) when the middle end is shaping, open mould, the demoulding is taken out, and namely forms two-color dual-density polyurethane shoe-sole.
CN201310361446.2A 2013-08-19 2013-08-19 Mold release agent for bicolor dual-density polyurethane sole Active CN103407047B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104177816A (en) * 2014-08-06 2014-12-03 金善花 Raw material formula and making process of double-color double-density outsole and midsole formed integrally
CN104626454A (en) * 2014-12-24 2015-05-20 东莞智标鞋业科技有限公司 Preparation method and product of double-density-layer middle sole
CN106626168B (en) * 2016-08-23 2018-01-23 广东工业大学 A kind of water-based emulsion silicone release and its preparation method and application
CN110733150B (en) * 2019-10-29 2022-02-22 临沂大学 Spraying type plastic release agent
CN111166005B (en) * 2019-10-31 2022-01-11 温州大学 Cold-coating last-pasting film

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6040278A (en) * 1998-03-09 2000-03-21 Acheson Industries, Inc. Water-free release/lubrication agent for treating the walls of a die for original shaping or reshaping
CN1843655A (en) * 2006-03-14 2006-10-11 上海应用技术学院 Releasing agent for wet-method forming of magnetic material and preparation method thereof
CN101628458A (en) * 2009-04-07 2010-01-20 上海立汰新模具材料有限公司 Polyurethane water-based release agent and application thereof
CN102658351A (en) * 2012-05-02 2012-09-12 厦门大学 Fluorine-free aluminum zinc alloy water base release agent and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6040278A (en) * 1998-03-09 2000-03-21 Acheson Industries, Inc. Water-free release/lubrication agent for treating the walls of a die for original shaping or reshaping
CN1843655A (en) * 2006-03-14 2006-10-11 上海应用技术学院 Releasing agent for wet-method forming of magnetic material and preparation method thereof
CN101628458A (en) * 2009-04-07 2010-01-20 上海立汰新模具材料有限公司 Polyurethane water-based release agent and application thereof
CN102658351A (en) * 2012-05-02 2012-09-12 厦门大学 Fluorine-free aluminum zinc alloy water base release agent and preparation method thereof

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Address after: 325200, No. 1688, Avenue, development zone, Ruian Economic Development Zone, Wenzhou, Zhejiang

Patentee after: Zhejiang Huafeng new material Co., Ltd

Address before: 325200, No. 1688, Avenue, development zone, Ruian Economic Development Zone, Wenzhou, Zhejiang

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