CN1324885A - Production process of halogen-free fireproof rubber - Google Patents
Production process of halogen-free fireproof rubber Download PDFInfo
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- CN1324885A CN1324885A CN 01113261 CN01113261A CN1324885A CN 1324885 A CN1324885 A CN 1324885A CN 01113261 CN01113261 CN 01113261 CN 01113261 A CN01113261 A CN 01113261A CN 1324885 A CN1324885 A CN 1324885A
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- rubber
- halogen
- free fireproof
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Abstract
The present invention provides a production process of halogen-less flame-retardant rubber. In this flame-retardant rubber lots of inorganic flane-retartant fillers are contained, the unsaturated carboxylic acids of methyl acrylic acid or acrylic acid and can be used as modifying agent, and the peroxide can be used as vulcanizing agent. Said invented flame-retardent material possesses excellent performance, low production cost, and its production process is simple, and so it possesses extensive application.
Description
The present invention relates to a kind of production method of halogen-free fireproof rubber.
Low-smoke non-halogen flame-retardant is a high molecular fire retardant Development of Materials direction, the high Al (OH) that fills
3And Mg (OH)
2Deng inorganic combustion inhibitor is the effective means that reaches the macromolecular material low-smoke non-halogen flame-retardant, can significantly improve the oxygen index of macromolecular material and reduce smoke density.But their flame retarding efficiency is low, and obtain satisfied flame retardant effect must fill in polymkeric substance in a large number.Add a large amount of mineral filler meetings the mechanical property of polymkeric substance is descended significantly, this has limited its application greatly.As everyone knows, improve high mechanical property of filling fire retardant material and mainly contain two kinds of means: one, carry out surface modification with lipid acid, derivative of fatty acid or coupling agent to filler; Its two, in polymeric matrix, introduce elasticity or functionalized polymkeric substance.Yet there is certain limitation in these methods, have not only increased operation sequence but also increased production cost.Existing many researchs (USP4,100,182, USP4,500,466, USP4,720,526, Rubber World, 1990:26, China Synthetic Rubber Industry, 1996, show that 19:248) metallic salts of unsaturated carboxylate is effective strengthening agent of peroxide cure rubber, metallic salts of unsaturated carboxylate can directly join in the rubber, also can generate by neutralization reaction original position in rubber of metal oxide or oxyhydroxide and unsaturated carboxylic acid, and the original position method of formation is more far better than direct addition method.
The object of the present invention is to provide and a kind ofly can reduce cost, simplify production technique, can keep the preparation method of the fire-retardant rubber material of good mechanical property again.
Method of the present invention is to add a large amount of inorganic fire-retarded fillers and a little properties-correcting agent, sulfidization molding under the effect of particular initiator in rubber matrix.
The present invention is applied to high the filling in the flame retardant rubber system with the method for metallic salts of unsaturated carboxylate original position reinforced rubber, has obtained good effect.At a large amount of Al (OH) that fill
3Or Mg (OH)
2Make properties-correcting agent Deng the middle a small amount of methacrylic acid (MAA) that adds of styrene-butadiene rubber(SBR) (SBR), the ethylene-propylene rubber(EPR) (EPR) of inorganic fire-retarded filler, can keep the mechanical property of material preferably.In mixing or sulfidation, most of MAA can with Al (OH)
3And Mg (OH)
2Neutralization reaction takes place, and original position generates aluminium methacrylate (Al (MAA)
3) and magnesinm methacrylate (Mg (MAA)
2).In with peroxide cure rubber, Al (MAA)
3And Mg (MAA)
2At the filling surface polymerization reaction take place, generate the short sequence of polymethyl acrylic acid aluminium or polymethyl acrylic acid magnesium, on the MAA that is grafted to rubber molecular chain then simultaneously and combines closely with filling surface, so just between filling surface and rubber, form and connect the biphase polymer chain.
Rubber of the present invention is styrene-butadiene rubber(SBR) (SBR), ethylene-propylene rubber(EPR) (EPR), natural rubber (NR), paracril halide-free rubbers such as (NBR).
Inorganic fire-retarded filler of the present invention is Al (OH)
3And Mg (OH)
2, consumption is 150-250phr.
Properties-correcting agent of the present invention is methacrylic acid (MAA), vinylformic acid unsaturated carboxylic acids such as (AA), and consumption is 5-40phr.
Initiator of the present invention is dicumyl peroxide (DCP), dibenzoyl peroxide peroxide initiators such as (BPO).
Mixing facilities of the present invention is Banbury mixer or mill, and melting temperature is room temperature or comparatively high temps (being no more than the decomposition temperature of superoxide).
Fire-retardant rubber material excellent property, especially intensity and modulus that the present invention makes are higher, and production cost is low, and production technique is simple, have a wide range of applications and industrial prospect.
Following embodiment is to further specify of the present invention, rather than limits the scope of the invention.
Embodiment 1-5:SBR flame retardant rubber
Under the room temperature, at first with 100g SBR and 150g Al (OH)
3Mix in Banbury mixer, add MAA and 0.9g DCP then successively, with the vulcanizing press sulfuration, cure conditions is 170 ℃ * 10min again.The gained vulcanized rubber material is pressed GB528-82, GB530-81, GB531-83 and performance index such as GB2406-80 test tensile strength, tear strength, hardness and oxygen index respectively, and the result is as shown in the table.
Embodiment 6-11:EPDM flame retardant rubber
| Example | MAA, ?g | 100% modulus, MPa | Tensile strength, MPa | Elongation at break, % | Tear strength, kN/m | Hardness, Shao A | Oxygen index, % |
| ?1 | ?0 | ????2.5 | ????3.9 | ????414 | ????19.0 | ????75 | ?25.0 |
| ?2 | ?5 | ????7.3 | ????7.9 | ????132 | ????31.3 | ????85 | ?24.8 |
| ?3 | ?10 | ????7.4 | ????8.4 | ????157 | ????35.2 | ????85 | ?24.7 |
| ?4 | ?20 | ????8.1 | ????10.4 | ????213 | ????38.4 | ????86 | ?24.8 |
| ?5 | ?40 | ????11.4 | ????15.7 | ????212 | ????38.7 | ????89 | ?25.3 |
Under the room temperature, at first with EPDM and Al (OH)
3Mix in Banbury mixer, add MAA and DCP (2phr) then successively, with the vulcanizing press sulfuration, cure conditions is 170 ℃ * 15min again.The gained vulcanized rubber material is pressed performance index such as GB528-82, GB530-81, GB531-83 and GB2406-80 test tensile strength, tear strength, hardness respectively, and the result is as shown in the table.
| Example | ?Al(OH) 3, | ???MAA, ????g | 50% modulus, MPa | 100% modulus, MPa | Tensile strength, MPa | Elongation at break, % | Hardness, Shao A |
| ?1 | ????200 | ????0 | ????5.3 | ????/ | ????7.1 | ????95 | ????86 |
| ?2 | ????200 | ????5 | ????8.4 | ????11.3 | ????12.2 | ????149 | ????88 |
| ?3 | ????200 | ????10 | ????7.9 | ????10.9 | ????12.4 | ????161 | ????90 |
| ?4 | ????250 | ????0 | ????4.7 | ????/ | ????4.9 | ????61 | ????87 |
| ?5 | ????250 | ????5 | ????9.2 | ????13.3 | ????13.9 | ????127 | ????91 |
| ?6 | ????250 | ????10 | ????8.5 | ????12.6 | ????13.6 | ????122 | ????92 |
Claims (6)
1, the production method of halogen-free fireproof rubber is characterized in that adding rubber and a large amount of inorganic fire-retarded filler and a little properties-correcting agent, sulfidization molding under the effect of particular initiator in mixing facilities.
2, the production method of halogen-free fireproof rubber according to claim 1 is characterized in that described rubber is styrene-butadiene rubber(SBR) (SBR), natural rubber (NR), paracril (NBR), ethylene-propylene rubber(EPR) (EPR) halide-free rubber.
3, the production method of halogen-free fireproof rubber according to claim 1 is characterized in that described inorganic fire-retarded filler is Al (OH)
3And Mg (OH)
2, consumption is 150-250phr.
4, the method for the production of halogen-free fireproof rubber according to claim 1 is characterized in that described properties-correcting agent is methacrylic acid (MAA), vinylformic acid (AA) unsaturated carboxylic acid, and consumption is 5-40phr.
5, the production method of halogen-free fireproof rubber according to claim 1 is characterized in that described initiator is dicumyl peroxide (DCP), dibenzoyl peroxide (BPO) peroxide initiator.
6, according to the production method of the described halogen-free fireproof rubber of claim 1, it is characterized in that described mixing facilities is Banbury mixer or mill, melting temperature is room temperature or comparatively high temps (being no more than the decomposition temperature of superoxide).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113261 CN1324885A (en) | 2001-07-05 | 2001-07-05 | Production process of halogen-free fireproof rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113261 CN1324885A (en) | 2001-07-05 | 2001-07-05 | Production process of halogen-free fireproof rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1324885A true CN1324885A (en) | 2001-12-05 |
Family
ID=4659996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01113261 Pending CN1324885A (en) | 2001-07-05 | 2001-07-05 | Production process of halogen-free fireproof rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1324885A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069534A (en) * | 2010-12-13 | 2011-05-25 | 青岛开世密封工业有限公司 | Open mill charging method |
| CN110128726A (en) * | 2019-06-11 | 2019-08-16 | 广讯检测（广东）有限公司 | A kind of staged fire-retardant rubber material and preparation method thereof |
| CN115873364A (en) * | 2022-12-08 | 2023-03-31 | 中绿新材料（江苏）有限公司 | Halogen-free rubber material with high damping and low hardness and preparation method thereof |
-
2001
- 2001-07-05 CN CN 01113261 patent/CN1324885A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069534A (en) * | 2010-12-13 | 2011-05-25 | 青岛开世密封工业有限公司 | Open mill charging method |
| CN110128726A (en) * | 2019-06-11 | 2019-08-16 | 广讯检测（广东）有限公司 | A kind of staged fire-retardant rubber material and preparation method thereof |
| CN110128726B (en) * | 2019-06-11 | 2021-06-01 | 广讯检测（广东）有限公司 | Stepped flame-retardant rubber material and preparation method thereof |
| CN115873364A (en) * | 2022-12-08 | 2023-03-31 | 中绿新材料（江苏）有限公司 | Halogen-free rubber material with high damping and low hardness and preparation method thereof |
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