CN103753740B - A kind of release agent composition for epoxy resin product - Google Patents
A kind of release agent composition for epoxy resin product Download PDFInfo
- Publication number
- CN103753740B CN103753740B CN201310536251.7A CN201310536251A CN103753740B CN 103753740 B CN103753740 B CN 103753740B CN 201310536251 A CN201310536251 A CN 201310536251A CN 103753740 B CN103753740 B CN 103753740B
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- epoxy resin
- release agent
- resin product
- agent composition
- silicone oil
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of release agent composition for epoxy resin product, composed of the following components by weight: reactive ammonia alkyl silicone oil 15 ~ 45 parts, 48 ~ 80 parts, hydroxyl silicon rubber, methyl MQ silicones 5 ~ 35 parts, solvent 300 ~ 20000 parts.The present invention has that stripping result is good, environmental friendliness, can repeat the demoulding, the advantage that production efficiency is high.
Description
Technical field
The present invention relates to polymer material molding processing technique field, be specifically related to a kind of release agent composition for epoxy resin product.
Background technology
Epoxy resin is the organic high molecular compound containing two or more epoxide groups in general reference molecule, and except indivedual, their relative molecular mass is not high.The molecular structure of epoxy resin be with in strand containing active epoxide group for its feature, epoxide group can be positioned at the end of strand, centre or structure circlewise.Due in molecular structure containing active epoxide group, make they can with polytype curing agent generation cross-linking reaction and formed and insoluble, not molten there is the cancellated high polymer of three-dimensional, be therefore widely used in every profession and trade.Macromolecular material is as the processing and forming of epoxy resin product, and the molded method of normal employing, injects mould by melt or molten liquid material, after curing molding, then take out moulded products from mould.Epoxy resin release agent is a kind of functional materials between mould and finished product, and molding molded articles can be prevented to be bonded to die surface.In order to ensure the demoulding smoothly of goods energy, usually to apply releasing agent in advance at die surface, not boning with mould after making part cooling.
Conventional epoxy resin release agent is based on sacrificial releasing agent, and so-called sacrificial releasing agent is namely through releasing agent that namely de-filming process is once totally consumed.Sacrificial releasing agent must recoat and be layed onto on die surface before each goods of manufacture, was easily accumulated into dirt, thus caused a series of adverse consequences, as affected products appearance integrality; Often cleaning is needed to have impact on production efficiency; Reuse, cost is high, and in increase releasing agent, volatile materials is as the discharge capacity of solvent simultaneously, and environmental protection pressure is large.
As China Patent Publication No. CN1554524A discloses a kind of preparation method of demolding agent for roducing epoxy glass fibre reinforced plastic composite material, by the proportioning taken amount respectively of the higher fatty acid salt of the silicon rubber of the silicone grease of 5 ~ 20 parts of weight, 10 ~ 60 parts of weight, 20 ~ 120 parts of weight, the paraffin of 30 ~ 90 parts of weight, adopt gasoline as solvent, each component to be added respectively in reaction vessel and to make the weight percentage of solid be 10%-80%, 50 DEG C ~ 120 DEG C heating, stirring at reflux makes each component be dissolved as homogeneous phase, i.e. obtained release agent solution.Weak point to repeat the demoulding, and production efficiency is low, and solvent discharge amount is large.
Summary of the invention
Technical problem to be solved by this invention is the defect overcoming prior art, provides that a kind of stripping result is good, environmental friendliness, can repeat the epoxy resin product releasing agent of the demoulding.
In order to solve above technical problem, present invention employs following technical scheme: a kind of release agent composition for epoxy resin product, composed of the following components by weight:
Described reactive ammonia alkyl silicone oil is preferably two hydroxy-end capped ammonia alkyl silicone oil or bi-methoxy end-blocking ammonia alkyl silicone oil.
Described reactive ammonia silicon alkyl oil viscosity is preferably 500 ~ 150000cps.
The amino content of described reactive ammonia alkyl silicone oil is preferably 0.15 ~ 5.6%.
The MQ value of described methyl MQ silicones is preferably 0.6 ~ 0.9.
Described solvent is preferably the one in benzinum, methyl iso-butyl ketone (MIBK) (MIBK), butyl acetate.
After release agent composition for epoxy resin product of the present invention is coated in die surface, along with the volatilization of solvent, cross-linked network structure can be formed between each composition, and methyl MQ silicones imparts composition and the stronger cementation power of die surface, releasing agent effectively can be prevented to the transfer of goods, maintain the persistence of stripping result.
The optional reactive ammonia alkyl silicone oil represented with following general formula of reactive ammonia alkyl silicone oil of the present invention:
R in formula
1, R
2, R
3, R
4and R
5identical or different separately, represent that carbon number is the alkyl of 1 ~ 4; P
1, P
2and P
3identical or different separately, be selected from the alkyl that hydroxyl, alkoxyl and carbon number are 1 ~ 4 respectively, but must ensure the number of hydroxyl and/or alkoxyl 2 and more than; R
1and R
2identical or different separately, be selected from ammonia alkyl respectively (as-CH
2cH
2cH
2nH
2deng) and carbon number be the alkyl of 1 ~ 4, but have one at least for ammonia alkyl; L, m are 0 or positive integer, and n is positive integer, l+m ﹥ 0, and the number of ammonia alkyl is greater than 0.Reactive ammonia alkyl silicone oil is preferably two hydroxy-end capped ammonia alkyl silicone oil or bi-methoxy end-blocking ammonia alkyl silicone oil.Described reactive ammonia silicon alkyl oil viscosity is preferably 500 ~ 150000cps, and amino content is preferably 0.15 ~ 5.6%.
Methyl MQ silicones refers to by four degree of functionality siloxane polycondensation chain link (SiO
2i.e. Q) and single functionality siloxane unit (R
3siO
1/2i.e. M) the special polysiloxane of the structure comparison that forms.MQ value refers to the ratio of M and Q.
The principle that solvent of the present invention is selected can make reactive ammonia alkyl silicone oil, silicon rubber and methyl MQ silicones uniform dissolution and the solvent of effumability.As varsol hexane, benzinum etc., ketones solvent acetone, methyl iso-butyl ketone (MIBK) etc., esters solvent ethyl acetate, butyl acetate etc., halogenated hydrocarbon solvent trichloroethanes, trichorotrifluoroethane etc.Described solvent is preferably the one in benzinum, methyl iso-butyl ketone (MIBK) (MIBK), butyl acetate.
The preparation method of epoxy goods mold release compositions of the present invention is as follows: each for described mold release compositions composition is at room temperature uniformly mixed into uniform solution.
Compared with prior art, the present invention has the following advantages:
1, stripping result is good, the easy film-forming of epoxy resin product releasing agent of the present invention and strong with the cohesive force of die surface, so less to goods transfer, do not affect the secondary operations of goods, obtained moulded products surface smoothness is good;
2, can repeat the demoulding, production efficiency is high, and coating once can realize continuous several times demoulding, simplifies production process, improves production efficiency;
3, environmental friendliness, decreases solvent discharge, safety and environmental protection.
Detailed description of the invention
Below in conjunction with specific embodiment, illustrate the present invention further, but these embodiments are only for explaining the present invention, instead of for limiting the scope of the invention.
The optional reactive ammonia alkyl silicone oil represented with following general formula of the reactive ammonia alkyl silicone oil used in embodiment:
R in formula
1, R
2, R
3, R
4and R
5identical or different separately, represent that carbon number is the alkyl of 1 ~ 4; P
1, P
2and P
3identical or different separately, be selected from the alkyl that hydroxyl, alkoxyl and carbon number are 1 ~ 4 respectively, but must ensure the number of hydroxyl and/or alkoxyl 2 and more than; R
1and R
2identical or different separately, be selected from ammonia alkyl respectively (as-CH
2cH
2cH
2nH
2deng) and carbon number be the alkyl of 1 ~ 4, but have one at least for ammonia alkyl; L, m are 0 or positive integer, and n is positive integer, l+m ﹥ 0, and the number of ammonia alkyl is greater than 0.
Wherein:
AY1, commercial (Fu Chun chemicals Co., Ltd) two hydroxy-end capped ammonia alkyl silicone oil, viscosity 4000cps, amino content 2.5%.Wherein, R
1for CH
2cH
2cH
2nH
2, P
1, P
2be respectively hydroxyl (OH), P
3, R
1, R
2, R
2, R
3, R
4and R
5be respectively methyl (CH
3);
AY2, commercial (Fu Chun chemicals Co., Ltd) two hydroxy-end capped ammonia alkyl silicone oil, viscosity 500cps, amino content 4%.Wherein, R
1for CH
2cH
2cH
2nH
2, P
1, P
2be respectively hydroxyl (OH), P
3, R
1, R
2, R
2, R
3, R
4and R
5be respectively methyl (CH
3);
AY3, commercial (three Tai Youjiguicailiaochang) bi-methoxy end-blocking ammonia alkyl silicone oil, viscosity 80,000 cps, amino content 0.43%.Wherein, R
1for CH
2cH
2cH
2nH
2, P
1, P
2be respectively methoxyl group (OCH
3), P
3, R
1, R
2, R
2, R
3, R
4and R
5be respectively methyl (CH
3);
AY4, commercial (three Tai Youjiguicailiaochang) bi-methoxy end-blocking ammonia alkyl silicone oil, viscosity 150,000 cps, amino content 0.15%.Wherein, R
1for CH
2cH
2cH
2nH
2, P
1, P
2be respectively methoxyl group (OCH
3), P
3, R
1, R
2, R
2, R
3, R
4and R
5be respectively methyl (CH
3);
AY5, synthetic reaction ammonia alkyl silicone oil, by the open method (Zhou Jianhua etc. of document, printing and dyeing assistant, 2004,21 (5): 11 ~ 14), by α, ε-dihydroxy dimethyl siloxane and N-β-aminoethyl-γ-aminopropyltrimethoxysilane are obtained by reacting under amines catalysis, viscosity 2200cps, amino content 5.6%.Wherein, P
1and P
2for hydroxyl (OH), P
3for methoxyl group (OCH
3), R
1for CH
2cH
2cH
2nHCH
2cH
2nH
2, R
1, R
2, R
2, R
3, R
4and R
5be respectively methyl (CH
3).
Embodiment 1
Preparation release agent composition for epoxy resin product: the reactive ammonia alkyl silicone oil AY1 of 20 grams, the hydroxyl silicon rubber of 75 grams, the methyl MQ silicones (MQ value is 0.71) of 5 grams and 400 grams of solvent benzinums are at room temperature stirred, is configured to releasing agent of the present invention.
Embodiment 2 ~ 10
Release agent composition for epoxy resin product compound method is with embodiment 1, and composition is in table 1.
Performance evaluation is carried out to the release agent composition for epoxy resin product of embodiment 1 ~ 15:
(1) demoulding test
Aluminium-making mould is heated to 90 DEG C, is coated with respectively and is covered with the mold release compositions of the embodiment of the present invention 1 ~ 15, after solidification 5 ~ 15min, casting epoxy resin and at 90 DEG C curing molding 4 hours, measure knockout press with tensile testing machine.
No longer repetitive coatings releasing agent, proceed demoulding test, until removal declines, (namely knockout press is greater than 3N/cm
2), (namely knockout press is less than 3N/cm to determine release times
2release times), the results detailed in Table 1.
(2) coated test
The molding for epoxy resin thing forming surface brushing esters of acrylic acid coating obtained in release times in demoulding test, carries out cross cut test by GB/T9286-1998 method after drying and forming-film, carries out classification according to pull-away situation.Be divided into 0 ~ 5 six grade, wherein 0 grade best, represent paint film completely without coming off.The suitability for secondary processing of the lower surface forming goods of progression is better, the results detailed in Table 1.
(4) shaping situation test
Observe the molding for epoxy resin thing forming surface obtained in release times in release property test, if any surface finish, zero defect, then surface forming is good, otherwise surface forming is poor, the results detailed in Table 1.
Table 1 embodiment 1 ~ 15 release agent composition for epoxy resin product composition and performance evaluation
Claims (5)
1. a release agent composition for epoxy resin product, composed of the following components by weight:
It is characterized in that described reactive ammonia alkyl silicone oil is for two hydroxy-end capped ammonia alkyl silicone oil or bi-methoxy end-blocking ammonia alkyl silicone oil.
2. release agent composition for epoxy resin product according to claim 1, is characterized in that described reactive ammonia silicon alkyl oil viscosity is 500 ~ 150000cps.
3. release agent composition for epoxy resin product according to claim 1, is characterized in that the amino content of described reactive ammonia alkyl silicone oil is 0.15 ~ 5.6%.
4. release agent composition for epoxy resin product according to claim 1, is characterized in that the MQ value of described methyl MQ silicones is 0.6 ~ 0.9.
5. release agent composition for epoxy resin product according to claim 1, is characterized in that described solvent is the one in benzinum, methyl iso-butyl ketone (MIBK), butyl acetate.
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|---|---|---|---|
| CN201310536251.7A CN103753740B (en) | 2013-11-01 | 2013-11-01 | A kind of release agent composition for epoxy resin product |
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|---|---|---|---|
| CN201310536251.7A CN103753740B (en) | 2013-11-01 | 2013-11-01 | A kind of release agent composition for epoxy resin product |
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| Publication Number | Publication Date |
|---|---|
| CN103753740A CN103753740A (en) | 2014-04-30 |
| CN103753740B true CN103753740B (en) | 2015-12-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079183A (en) * | 2016-07-05 | 2016-11-09 | 安徽三彩工贸有限责任公司 | A kind of polyurethane release agent of dual density |
| CN106608008B (en) * | 2016-11-28 | 2018-11-23 | 西安空间无线电技术研究所 | A kind of release agent and preparation method thereof and the application in epoxy resin encapsulated |
| CN114654626A (en) * | 2022-03-18 | 2022-06-24 | 惠州市金亮丽塑胶制品有限公司 | Composite plastic processing release agent and preparation method thereof |
| CN114891398B (en) * | 2022-07-07 | 2023-05-26 | 厦门欧化实业有限公司 | Water-based plastic surface printing ink and production method and equipment thereof |
| CN115042353A (en) * | 2022-08-15 | 2022-09-13 | 广东纳德新材料有限公司 | Resin grinding block release agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535360C1 (en) * | 1985-10-03 | 1986-04-24 | Th. Goldschmidt Ag, 4300 Essen | Process for the formation of a strongly adherent, elastic coating on the surface of a heatable rubber bellows |
| CN87104240A (en) * | 1987-06-17 | 1988-12-28 | 中国原子能科学研究院 | Releasing agent for rubber |
| CN101247934A (en) * | 2005-04-08 | 2008-08-20 | 蓝星有机硅法国公司 | Composition based on siloxane for the moulding/unmoulding of tyres |
| CN101392097A (en) * | 2007-09-20 | 2009-03-25 | 德古萨有限责任公司 | Aqueous composition of organo-silicone with amido group functionalization |
-
2013
- 2013-11-01 CN CN201310536251.7A patent/CN103753740B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535360C1 (en) * | 1985-10-03 | 1986-04-24 | Th. Goldschmidt Ag, 4300 Essen | Process for the formation of a strongly adherent, elastic coating on the surface of a heatable rubber bellows |
| CN87104240A (en) * | 1987-06-17 | 1988-12-28 | 中国原子能科学研究院 | Releasing agent for rubber |
| CN101247934A (en) * | 2005-04-08 | 2008-08-20 | 蓝星有机硅法国公司 | Composition based on siloxane for the moulding/unmoulding of tyres |
| CN101392097A (en) * | 2007-09-20 | 2009-03-25 | 德古萨有限责任公司 | Aqueous composition of organo-silicone with amido group functionalization |
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| CN103753740A (en) | 2014-04-30 |
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Effective date of registration: 20180914 Address after: 324004 Zhejiang Quzhou Juhua Group Co., Ltd. Patentee after: Juhua Group Co., Ltd. Address before: 324004 Zhejiang Quzhou City Kecheng District Juhua Group Technology Center Patentee before: Technology Center of Juhua Group |
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Granted publication date: 20151230 Termination date: 20201101 |