CN1316321A - Internal demoulding agent for glass fibre reinforced plastics - Google Patents
Internal demoulding agent for glass fibre reinforced plastics Download PDFInfo
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- CN1316321A CN1316321A CN 00114189 CN00114189A CN1316321A CN 1316321 A CN1316321 A CN 1316321A CN 00114189 CN00114189 CN 00114189 CN 00114189 A CN00114189 A CN 00114189A CN 1316321 A CN1316321 A CN 1316321A
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- glass fibre
- reinforced plastics
- fibre reinforced
- agent
- fatty alcohol
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Abstract
An internal demoulding agent for glass fibre reinforced plastics is synthesized from the phosphorylating agent including P2O5 and phosphorus oxychloride and the straight-chain emtrol (n-decanol, n-octanol, etc). Its advantages include low melting point (not higher than 60 deg.C), high compatibility with liquid resin and dispersity, and high surface quality of demoulded products.
Description
The production of glass fiber reinforced plastics product has many kinds of technologies, such as when producing a kind of continuous wire of constant cross-section, must use pultrude process production,, in manufacturing process, must use inner pattern releasing agent applicable that parts are deviate from from mould in order successfully to make the dragging and squeezing glass fiber reinforced plastics parts.
The technical process of pultrusion is to allow continuous fiber (normally woven glass roving fabric or carbon fiber, aramid fiber) by a groove that fills the resin sizing material, allow fiber soak the resin sizing material, enter mold heated through after the preformed, the curing of being heated of resin sizing material, be drawn out mould then, be cut into required length at last.
The resin sizing material is main to be made up of unsaturated polyester resin or vinyl ester resin or epoxy resin, and these resins can solidify to form smooth hard components together with catalyst in heated mold.When it solidifies, resin has slight contraction tendency, therefore help it to take off from mould, except above-mentioned resin, can also add thin mineral powder filling materials to improve outward appearance and surface characteristic and to gain in strength, in addition, normal other composition that adds is low contraction heat plastic additive in the sizing material, cross-linking monomer also adds pigment sometimes and makes colored part.
Resin has stronger and the tendency mould adhesion in the process of being heating and curing, especially after it adds fiber and fleut, reduce the contraction of resin, therefore, in the resin sizing material, needed to add inner pattern releasing agent applicable, the contraction of resin sizing material is more little, just needs to add more inner pattern releasing agent applicable.
In the fiberglass pultrude process, the most frequently used inner pattern releasing agent applicable is a zinc stearate.The effect of zinc stearate is to be seeped into the parts surface that is solidifying, and contacts with mould, provides lubrication to make the goods demoulding at die surface.
Zinc stearate is the fine-powdered material, and it has some problems in the use, because be powdery, it is difficult to disperse in liquid resin, this just may form caking and disperse irregularly, and when the caking of zinc stearate was seeped into die surface, the result can be at product surface shape planar defect or indenture.When dispersion is irregular, can cause the sizing material and the mould adhesion of no zinc stearate, cause the product sticking to mould, the percent defective of product is raise.The defective of product has also been disturbed the follow-up outer reason to parts surface, comprise follow-up laminated, bonding, spray paint etc.Because according to the difference of parts and uses thereof, before adding face coat, must carry out sand milling to parts, operations such as cleaning.When using low shrinkage additive, the problem of using zinc stearate to meet is more serious, therefore must use more inner pattern releasing agent applicable.In addition, use zinc stearate relatively poor as the resulting lustrous surface of inner pattern releasing agent applicable.
The fusing point of zinc stearate is higher to be 120 ℃, if use low temperature curing agent to come the cured resin sizing material, then when sizing material solidified, zinc stearate is not fusing also, can not move to the die surface lubricate.At this moment, zinc stearate can not play demoulding effect at all.
The inner pattern releasing agent applicable that the object of the present invention is to provide a kind of low melting point, easily disperse, demoulding ability is strong.
A kind of internal demoulding agent for glass fibre reinforced plastics is characterized in that being synthesized by two kinds of raw materials, and a kind of is phosphorylation agent, and another kind is a straight-chain fatty alcohol.
Aforesaid a kind of internal demoulding agent for glass fibre reinforced plastics is characterized in that phosphorylation agent comprises phosphorus pentoxide.
Aforesaid a kind of internal demoulding agent for glass fibre reinforced plastics is characterized in that being that the proportion of phosphorylation agent and fatty alcohol is as follows: the molar ratio range of phosphorus pentoxide and fatty alcohol is 1 to 2 to 1 to 4 (1: 2～1: 4).
Aforesaid a kind of internal demoulding agent for glass fibre reinforced plastics is characterized in that being that phosphorylation agent comprises phosphorous oxychloride.
Aforesaid a kind of internal demoulding agent for glass fibre reinforced plastics is characterized in that being that the mol ratio of phosphorous oxychloride and fatty alcohol is 1 to 1 to 1 to 2 (1: 1～1: 2).
Aforesaid a kind of internal demoulding agent for glass fibre reinforced plastics is characterized in that straight-chain fatty alcohol includes Decanol, n-octyl alcohol, laruyl alcohol.
This inner pattern releasing agent applicable is applied in unsaturated polyester (UP) and the vinylite moulding compound, particularly fiberglass pultrude process, also can be applied in the heat curing process of mould pressing process and other use metal mold closing.Its molten point is lower, generally can not surpass 60 °, and is good with the compatibility of liquid resin, easily disperses, and improved the surface quality of demoulding functions and goods, makes it can carry out following process immediately, as various coatings, bonding etc.
Below the present invention is done detailed explanation:
The present invention is synthetic by two kinds of raw materials, and a kind of is phosphorylation agent, comprises phosphorus pentoxide and phosphorous oxychloride, and another kind is a straight-chain fatty alcohol, comprises single from fatty alcohol and mixed fatty alcohol.As Decanol, n-octyl alcohol, laruyl alcohol, C
8-12Mixed fatty alcohol, these fatty alcohols can be natural, also can synthesize.
In this inner pattern releasing agent applicable, the proportion of phosphorylation agent and fatty alcohol is as follows: the molar ratio range of phosphorus pentoxide and fatty alcohol is 1 to 2 to 1 to 4 (1: 2～1: 4); The mol ratio of phosphorous oxychloride and fatty alcohol is 1 to 1 to 1 to 2 (1: 1～1: 2).
Embodiment 1:
The Decanol of 69 parts (weight) is dropped in the reactor, and heat fused slowly drops into the phosphorus pentoxide of 31 parts (weight), and the control temperature was reacted three hours at 60 ℃+5 ℃, got 100 parts of products.
Embodiment 2:
The laruyl alcohol of 83.8 parts (weight) is dropped in the reactor, and heat fused stirs the phosphorus pentoxide that slowly drops into 16.2 parts (weight) down, and the control temperature is lower than 80 ℃, reacts three hours, gets 100 parts of products.
Embodiment 3:
The hydrochlorinate phosphorus of 37.6 parts (weight) is dropped in the reactor, under agitation slowly splash into the n-octyl alcohol of 62.4 parts (weight), the control temperature is lower than 80 ℃, adding the back continues to stir one hour, be hydrolyzed with an amount of water afterwards, branch vibration layer, oil reservoir continue washing 2 times, behind the branch vibration layer, oil reservoir is carried out drying and dehydrating, get 65～70 parts of products.
For easy to use, above-mentioned inner pattern releasing agent applicable can be dissolved in organic solvent or the plasticizer and make goods.Organic solvent comprises styrene, methyl methacrylate and diallyl phthalate etc., plasticizer such as dibutyl phthalate, dioctyl phthalate, repefral etc., and its mixed proportion can according to circumstances be decided.
Applicating example:
The garden rod of pultrusion 18mm diameter, the long 1200mm of mould, the resin sizing material adopts following prescription:
Unsaturated polyester (UP) (S-686) 100
Calcium carbonate 20
Curing agent (P-16) 1
Curing agent (TBPB) 0.5
Pigment paste 1
Add inner pattern releasing agent applicable: 1～1.5
Reinforcing material uses the alkali-free roving of 2400tex, and totally 148, the content of glass fibre is 70%.Without preheating, mould adopt the heating of three districts, and it is 120 ℃, 150 ℃, 140 ℃ that temperature is set, and pultrusion speed is the 300mm/ branch.Stripping result and outward appearance are estimated,, also used zinc stearate to test for the ease of relatively.The result shows, uses the product surface of aforementioned synthetic inner pattern releasing agent applicable gained smooth, highly polished, and the machine pulling force is little, and product appearance is coarse when using zinc stearate, and the machine pulling force is big.
Claims (6)
1, a kind of internal demoulding agent for glass fibre reinforced plastics is characterized in that being synthesized by two kinds of raw materials, and a kind of is phosphorylation agent, and another kind is a straight-chain fatty alcohol.
2, a kind of internal demoulding agent for glass fibre reinforced plastics according to claim 1 is characterized in that phosphorylation agent comprises phosphorus pentoxide.
3, a kind of internal demoulding agent for glass fibre reinforced plastics according to claim 2 is characterized in that being that the proportion of phosphorylation agent and fatty alcohol is as follows: the molar ratio range of phosphorus pentoxide and fatty alcohol is 1 to 2 to 1 to 4 (1: 2～1: 4).
4, a kind of internal demoulding agent for glass fibre reinforced plastics according to claim 1 is characterized in that being that phosphorylation agent comprises phosphorous oxychloride.
5, a kind of internal demoulding agent for glass fibre reinforced plastics according to claim 4 is characterized in that being that the mol ratio of phosphorous oxychloride and fatty alcohol is 1 to 1 to 1 to 2 (1: 1～1: 2).
6, according to claim 1,3,5 described a kind of internal demoulding agent for glass fibre reinforced plastics, it is characterized in that straight-chain fatty alcohol includes Decanol, n-octyl alcohol, laruyl alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00114189 CN1316321A (en) | 2000-04-06 | 2000-04-06 | Internal demoulding agent for glass fibre reinforced plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00114189 CN1316321A (en) | 2000-04-06 | 2000-04-06 | Internal demoulding agent for glass fibre reinforced plastics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1316321A true CN1316321A (en) | 2001-10-10 |
Family
ID=4583902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00114189 Pending CN1316321A (en) | 2000-04-06 | 2000-04-06 | Internal demoulding agent for glass fibre reinforced plastics |
Country Status (1)
| Country | Link |
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| CN (1) | CN1316321A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309546C (en) * | 2003-12-26 | 2007-04-11 | 四川东方绝缘材料股份有限公司 | Method for preparing demolding agent for roducing epoxy glass fibre reinforced plastic composite material |
| CN101695860A (en) * | 2009-11-11 | 2010-04-21 | 天长市天广有机玻璃有限公司 | Release agent for pultrusion molding process of glass fiber reinforced plastic and preparation method thereof |
| CN101157795B (en) * | 2007-09-30 | 2010-08-11 | 潘锦荣 | Resin mixture and glass reinforced plastic section bar prepared thereby |
| CN106142403A (en) * | 2016-07-01 | 2016-11-23 | 陈小女 | A kind of internal demoulding agent for glass fibre reinforced plastics |
| CN106280286A (en) * | 2016-08-30 | 2017-01-04 | 山东圣泉新材料股份有限公司 | A kind of composite and application thereof and insulated wall connector |
| CN106273102A (en) * | 2016-08-30 | 2017-01-04 | 山东圣泉新材料股份有限公司 | A kind of releasing agent, resin combination, section bar and its preparation method and application |
-
2000
- 2000-04-06 CN CN 00114189 patent/CN1316321A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309546C (en) * | 2003-12-26 | 2007-04-11 | 四川东方绝缘材料股份有限公司 | Method for preparing demolding agent for roducing epoxy glass fibre reinforced plastic composite material |
| CN101157795B (en) * | 2007-09-30 | 2010-08-11 | 潘锦荣 | Resin mixture and glass reinforced plastic section bar prepared thereby |
| CN101695860A (en) * | 2009-11-11 | 2010-04-21 | 天长市天广有机玻璃有限公司 | Release agent for pultrusion molding process of glass fiber reinforced plastic and preparation method thereof |
| CN101695860B (en) * | 2009-11-11 | 2013-06-05 | 天长市天广有机玻璃有限公司 | Release agent for pultrusion molding process of glass fiber reinforced plastic and preparation method thereof |
| CN106142403A (en) * | 2016-07-01 | 2016-11-23 | 陈小女 | A kind of internal demoulding agent for glass fibre reinforced plastics |
| CN106280286A (en) * | 2016-08-30 | 2017-01-04 | 山东圣泉新材料股份有限公司 | A kind of composite and application thereof and insulated wall connector |
| CN106273102A (en) * | 2016-08-30 | 2017-01-04 | 山东圣泉新材料股份有限公司 | A kind of releasing agent, resin combination, section bar and its preparation method and application |
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