CN108795021A - A method of along fourth or natural rubber and the compound mixing of polyurethane - Google Patents
A method of along fourth or natural rubber and the compound mixing of polyurethane Download PDFInfo
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- CN108795021A CN108795021A CN201810686002.9A CN201810686002A CN108795021A CN 108795021 A CN108795021 A CN 108795021A CN 201810686002 A CN201810686002 A CN 201810686002A CN 108795021 A CN108795021 A CN 108795021A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/166—Magnesium halide, e.g. magnesium chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/168—Zinc halides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Product is blended along fourth or natural rubber and the compound co-vulcanization of PU, using following quality formula：Basic glue 1,100, basic glue 2,80-120, vulcanizing activator 0.5-5；Accelerating agent：0.001-8 is the one kind for promoting DM, promoting M；Peroxide initiator：0.5-5 is DOP；Co-crosslinker 2-20：TMPT,MA,TAIC,ZDMA,BGMH；Plasticizer 0-30；Basic glue 1 is polyester unsaturated polyester (UP) mixed milling type PU rubber or polyester unsaturated polyether millable rubbers；Basic glue 2 is 80-120 parts along fourth or natural rubber；Interfacial compatibilizer 2-15, using maleic anhydride polybutadiene methacrylic acid tetrahydrofurfural or dimethyl polybutadiene enester；Reinforcing agent is white carbon or reinforcing fiber.
Description
Technical field
It is especially compound with low polarity natural rubber the present invention relates to product and the preparation along fourth or the compound PU of natural rubber
The PU blend methods of co-vulcanization.
Background technology
Butadiene rubber, natural rubber are General Purpose Rubbers at low cost, the tire that is mainly covered with natural rubber products along fourth,
Sole, plate and pipe, are products most large in rubber, sulfuration process had for many years with ripe history；Vulcanizing agent is also known as handed over
Join agent or bridging agent.Natural rubber compounding technique is ripe, cheap, and such as conveyer belt, sole, but it wears no resistance, and makes
Low with the service life, PU rubber is known as wear-resisting king, but cost price is high, for a long time, it is intended that itself and low polarity natural rubber
Compound co-vulcanization molding, is desirably to obtain the product of excellent cost performance, but fail；Mainly this two classes material one is solubility
The difference of polarity parameters is big, natural rubber 7.5, PU12 or so, second is that its hydrogen bond energy index differential is also big, lacks the base of crystallization
Plinth, third, the strand activity difference due to them is very big, it is difficult to suitable cross-linking system is found, the compound co-vulcanization of natural rubber
Three bases of PU be not present, it is likely that being prepared by suitable high molecular weight compatibilizer and suitable vulcanizing system natural
The method that the compound co-vulcanization of rubber PU is blended prepares product.
Invention content
Purpose of the present invention is to propose a kind of suitable fourth or natural rubber and the compound co-vulcanization of PU is blended product and method, logical
It crosses suitable high molecular weight compatibilizer and suitable vulcanizing system prepares the method that the compound co-vulcanization of natural rubber PU is blended and prepares system
Product reduce the cost and improve comprehensive performance.
The technical scheme is that：Product is blended along fourth or natural rubber and the compound co-vulcanization of PU, it is characterized in that adopting
With following quality formula：Basic glue 1,100, basic glue 2,80-120, vulcanizing activator 0.5-5；Accelerating agent：0.001-8 is to promote
DM, the one kind for promoting M；Peroxide initiator：0.5-5 is DOP, TMCH or BIBP, double 2,5 [2,5- diethyl -2,5- bis-
(tert-butyl peroxide) hexane] (or bis- (t-butylperoxy) hexanes of 2,5- dimethyl -2,5-)；Co-crosslinker 2-20：TMPT,
MA,TAIC,ZDMA,BGMH；Plasticizer 0-30；Basic glue 1 is that polyester unsaturated polyester (UP) mixed milling type PU rubber or polyester are unsaturated
Polyethers millable rubbers；Basic glue 2 is 80-120 parts along fourth or natural rubber；Vulcanizing activator uses zinc dimethacrylate.
Interfacial compatibilizer 2-15, using maleic anhydride polybutadiene methacrylic acid tetrahydrofurfural or dimethyl polybutadiene
Ester；Reinforcing agent 20-60N330N220 carbon blacks, white carbon or reinforcing fiber.
Another addition zinc chloride, zinc oxide, magnesium chloride, zinc dimethacrylate or stearate wherein at least one；Separately add
Add 0.5-2 parts of rubber accelerator.Promote DM, promote M, DM or M complex compound.
Another 0.5-2 parts of antioxidant of addition.
The present invention just will produce a small amount of cracking preferably with peroxide vulcanizing system, peroxide under normal temperature state,
It increases to decompose with temperature and accelerate, commonly use the acetophenone that peroxide DCP generates penetrating odor in vulcanization, common peroxidating
Article kind also has BIPB [two (tert-butyl peroxide) diisopropylbenzene (DIPB)s] and double two or five [two (peroxidating of 2,5- diethyl -2,5-
Tertiary butyl) hexane], containing there are two effective peroxy groups in the two molecular structure, and penetrating odor is not generated after vulcanizing,
It can replace DCP completely in high-grade product；In peroxide vulcanizing system, addition helps bridging agent TAC or TAIC that can make vulcanization
Time of scorch slightly postpone, with the extension of vulcanization time, bridging agent is helped to occur apparent promoting cross-linked effect；Probably due to
In the initial stage of vulcanization reaction, help bridge formation agent molecule itself that cyclopolymerization occurs, and be grafted with rubber molecule and consume part
Rubber molecule free radical, these free radicals should generate normal chemical crosslinking in helpless bridging agent with vulcanization time
Extend, double bond and the rubber of allyl, which crosslink to react, occupies an leading position, and forms activating agent bridged bond, to improve crosslinking effect
Rate.
Advantageous effect, the difference that the present invention solves two class material polarity parameters substantially is big, lacks the basis of crystallization and divides
The big deficiency of subchain activity difference, using improved peroxyde crosslinked system, in addition passing through suitable high molecular weight compatibilizer and conjunction
Suitable vulcanizing system prepares the method that the compound co-vulcanization of natural rubber PU is blended and prepares product.The mixed milling type that the present invention obtains is poly-
The performance of urethane rubber：All there is fabulous high mechanical strength and excellent chemical resistance, and there are many cost reduction；It wants
According to vulcanizate requirement and used process equipment, select suitable millable polyurethane elastomer type, go forward side by side
The rational formula design of row.Polyethers millable polyurethane elastomer has excellent hydrolytic resistance；And polyester blending-type polyurethane rubber
Glue has excellent oil resistivity and fuel resistance.Peroxide cure assigns the best heat resistance of product and minimum compression is permanent
Deformation.The processing of sulfur cross-linking sizing material is flexible, and isocyanates vulcanization is suitable for high rigidity product.
The performance characteristics of peroxide vulcanizing system:Compression set, setafter break are small, heat-resist, rebound
Property is good, and breaking strength of the present invention, elongation at break, tearing strength have very high target.It can make transparent rubber.
1. hardness is preferable in Shao A50~90 degree traditional performance.
2. traditional performance breaking strength is less than 10%, 40~65kN/m of tearing strength in 5~25MPa, setafter break.
Traditional performance breaking strength reaches as high as 35MPa or more
Resilience performance resilience 40~60% 3. (Shao A85 degree and the above resilience 30% or so) 4. wear hardness Akrons
Abrasion are in 0.01~0.07 ㎝ 3/1.61km.5. (100 DEG C × 70h, 30%) of buckling performance compression set is less than 35%.6.
Oil resistivity is resistant to oily (100 DEG C × 70h) mass change 15% or so of 3# experiments, volume change 20% or so.
Water resistance 7. (room temperature × 9d adds 70 DEG C × 7d) mass change 0.4%, volume change 0.4%.
Fuel oil resistance A performances 8. (room temperature × 7d) mass change 2.7%, volume change 6%.
Acid-proof alkaline 9. (room temperature × 7d) 20%HCI, 30%H2SO3 and 40%NOH mass change is respectively 0%,
0.6% and 0.9%, volume change is respectively 0.09%, -1% and 0.2%.
10. -70 DEG C of resistance to low temperature brittleness temperature, compressing the coefficient that resists cold, (- 50 DEG C, 20%) compression is 0.30.
11. heat resistance can only generally use in the environment of less than 100 DEG C.12. stable storing rubber compound is close in room temperature
It seals up for safekeeping to put 6 months and test, performance change is small.
Specific implementation mode
Product is blended with natural rubber and the compound co-vulcanization of PU, using (mass ratio) as following formula：
Embodiment 1：
1,100 part of basic glue is polyester unsaturated polyester (UP) mixed milling type PU rubber (different selections when water-fast).Basic glue 2 is
80 parts along fourth or natural rubber.
Vulcanizing activator 2, accelerating agent 0.001 are to promote DM, 5 parts of peroxide initiator, for double 2,5 [2,5- diethyl-
2,5- bis- (tert-butyl peroxide) hexane] (or bis- (t-butylperoxy) hexanes of 2,5- dimethyl -2,5-)；Co-crosslinker 10,
TMPT or BGMH；Plasticizer 30,
Zinc chloride, magnesium chloride, zinc stearate, antioxidant are 0.5-2；Reinforcing agent 20-60N330N220 carbon blacks, white carbon
Or reinforcing fiber；
Interfacial compatibilizer 15, using maleic anhydride polybutadiene methacrylic acid tetrahydrofurfural or dimethyl polybutadiene
Ester.
Embodiment 2：
Basic glue 1,100 is polyester mixed milling type PU rubber (different selections when water-fast).Basic glue 2 be 120 parts along fourths or
Natural rubber.
Vulcanizing activator 5, accelerating agent 0.05 are to promote DM, 3 parts of peroxide initiator, for double 2,5 [2,5- diethyl-
2,5- bis- (tert-butyl peroxide) hexane] (or bis- (t-butylperoxy) hexanes of 2,5- dimethyl -2,5-)；Co-crosslinker 10,
TMPT or BGMH；Plasticizer 10,
Zinc chloride 1, zinc dimethacrylate 1, stearate 1, antioxidant 0.5-2；Reinforcing agent：20-60N330 or N220
Carbon black or white carbon；
Interfacial compatibilizer 2, using maleic anhydride polybutadiene.
Embodiment 3：
Basic glue 1,100 is polyester mixed milling type PU rubber (different selections when water-fast).Basic glue 2 be 100 parts along fourths or
Natural rubber.
Vulcanizing activator 0.5,8 parts of accelerating agent promote M, 1 part of DOP or BIBP of peroxide initiator；5 parts of co-crosslinker, MA
Or ZDMA；Plasticizer 10, zinc oxide 2, antioxidant 2；60 parts of reinforcing fibers of reinforcing agent；Interfacial compatibilizer 15, using metering system
Sour tetrahydrofurfural or dimethyl polybutadiene enester.
Embodiment 4：
Basic glue 1,100 is polyethers mixed milling type PU rubber (different selections when water-fast).Basic glue 2 be 120 parts along fourths or
Natural rubber.
Vulcanizing activator 5, accelerating agent 0.001 be promote DM, promote M one kind, 1 part of peroxide initiator, DOP, TMCH or
BIBP, double 2,5 [2,5- diethyl -2,5- bis- (tert-butyl peroxide) hexanes] (or 2, bis- (the peroxide uncles of 5- dimethyl -2,5-
Butyl) hexane) one kind；Co-crosslinker 2, one kind in TMPT, MA, TAIC, ZDMA, BGMH；Plasticizer 5, Sulfur 0-2；
Zinc chloride promotees DM, zinc dimethacrylate, zinc stearate, the equal 0.5-2 of antioxidant；Reinforcing agent 60N330N220 charcoals
Black, white carbon or reinforcing fiber；Interfacial compatibilizer 15, using dimethyl polybutadiene enester.
Embodiment 5：
Basic glue 1,100 is polyethers unsaturated polyether mixed milling type PU rubber (different selections when water-fast).Basic glue 2 is
80 parts along fourth or natural rubber.
0.9 part of vulcanizing activator, 1 part of accelerating agent, for promote DM, promote M one kind, peroxide initiator 0.5-5DOP,
(or 2,5- dimethyl -2,5- is bis- for TMCH or BIBP, double 2,5 [2,5- diethyl -2,5- bis- (tert-butyl peroxide) hexanes]
(t-butylperoxy) hexane)；Co-crosslinker 2-20, TMPT, MA, TAIC, ZDMA, BGMH；Plasticizer 30, Sulfur 1；
Zinc chloride promotees DM, zinc dimethacrylate, zinc stearate, the equal 0.5-2 of antioxidant；Reinforcing agent 60N330N220 charcoals
Black, white carbon or reinforcing fiber；Interfacial compatibilizer 5, using maleic anhydride polybutadiene methacrylic acid tetrahydrofurfural.
Embodiment 6：
Basic glue 1,100 is polyester unsaturated polyester (UP) mixed milling type PU rubber (different selections when water-fast).Basic glue 2 is
100 parts along fourth or natural rubber.
Vulcanizing activator 0.5-5, accelerating agent 0.001-8 be promote DM, promote M one kind, peroxide initiator 0.5-5DOP,
(or 2,5- dimethyl -2,5- is bis- for TMCH or BIBP, double 2,5 [2,5- diethyl -2,5- bis- (tert-butyl peroxide) hexanes]
(t-butylperoxy) hexane)；Co-crosslinker 2-20, TMPT, MA, TAIC, ZDMA, BGMH；Plasticizer 0-30, Sulfur 0-2；Chlorination
Zinc, zinc oxide promote DM, promote M, DM or M complex compound, magnesium chloride, zinc dimethacrylate, stearate (zinc etc.), antioxidant
0.5-2；Reinforcing agent 20-60N330N220 carbon blacks, white carbon or reinforcing fiber；
Interfacial compatibilizer 2-15, using maleic anhydride polybutadiene methacrylic acid tetrahydrofurfural or dimethyl polybutadiene
Ester.
Vulcanizing activator is all made of zinc dimethacrylate.
For polyalcohol, polyethers both may be used, can also be using ester.Polyethers and polyester polyol have many product again
Kind.Diisocyanate component can be aromatic diisocyanate；It can also be aliphatic diisocyanate.Two isocyanide of aromatic series
Acid esters assigns the preferable mechanical strength of sizing material, and aliphatic diisocyanate assigns the preferable heat resistance of sizing material and hydrolytic resistance.
If producing light color and coloured prod, it is also desirable to use aliphatic diisocyanate.Along fourth or natural rubber the present invention's
The indistinction in.
The preparation of the above-mentioned formula of the present invention refers to vulcanizing when being kneaded：Sulfurization technology scheme may be used.
Peroxide vulcanizing system (when mixing), the temperature similar with sulfur cross-linking method are free by the macromolecule of formation
Base, macromolecule free radical couple two-by-two again, form carbon-carbon crosslink, this bond type is heat-resisting fine, but dynamic property tear-proof
Poor performance；Another part peroxide radical, which can be attacked, denounces electron group in rubber molecule, such as methyl, generates molecular backbone
Carbon-to-carbon rupture forms many defects, degraded performance in rubber cross network.Also part free radical or it is quenched or is formed
Invalid mounting.In addition, peroxide just will produce a small amount of cracking under normal temperature state, increases to decompose with temperature and accelerate, vulcanization
Incipient scorch controllable degree is low in the process, there's almost no vulcanization induction period, and processing technology adaptability is very poor.Peroxide vulcanizing system
It is not rarely seen for silicon rubber, fluorubber and nitrile rubber EP rubbers.Vulcanize body especially in butadiene acrylonitrile rubber, second third as peroxidating
During glue peroxide cure, it can play that compressive deformation is low, curingprocess rate is fast and the sizing material of hot air aging.
Common peroxide DCP generates the acetophenone of penetrating odor in vulcanization, and common peroxide kind also has
[2,5- diethyl -2,5- two (tert-butyl peroxide) is by BIPB [two (tert-butyl peroxide) diisopropylbenzene (DIPB)s] and double 25
Alkane], containing there are two effective peroxy groups in the two molecular structure, and penetrating odor is not generated after vulcanizing, is made in top grade
DCP can be replaced in product completely；In peroxide vulcanizing system, when addition helps bridging agent TAC or TAIC that can make the incipient scorch of vulcanization
Between slightly postpone, with the extension of vulcanization time, helping bridging agent to occur, apparent to promote cross-linked effect may be because anti-in vulcanization
The initial stage answered helps bridge formation agent molecule itself that cyclopolymerization occurs, and is grafted with rubber molecule and consumes partial rubber molecule
Free radical, these free radicals should generate normal chemical crosslinking in helpless bridging agent with the extension of vulcanization time, allyl
The double bond of base is crosslinked to react with rubber and be occupied an leading position, and activating agent bridged bond is formed, to improve cross-linking efficiency.
Claims (4)
1. product is blended along fourth or natural rubber and the compound co-vulcanization of PU, it is characterized in that using following quality formula：Basic glue
1,100, basic glue 2,80-120, vulcanizing activator 0.5-5；Accelerating agent：0.001-8 is the one kind for promoting DM, promoting M；Peroxide
Initiator：0.5-5 is DOP, TMCH or BIBP, double 2,5 [2,5- diethyl -2,5- bis- (tert-butyl peroxide) hexanes]
(or bis- (t-butylperoxy) hexanes of 2,5- dimethyl -2,5-)；Co-crosslinker 2-20：TMPT,MA,TAIC,ZDMA,BGMH；Increase
Mould agent 0-30；Basic glue 1 is polyester unsaturated polyester (UP) mixed milling type PU rubber or polyester unsaturated polyether millable rubbers；Basic glue
2 be 80-120 parts of suitable fourth or natural rubbers；
Interfacial compatibilizer 2-15, using maleic anhydride polybutadiene methacrylic acid tetrahydrofurfural or dimethyl polybutadiene enester；
20-60 parts of N330N220 carbon blacks of reinforcing agent, white carbon or reinforcing fiber.
2. product is blended with the compound co-vulcanization of PU in suitable fourth according to claim 1 or natural rubber, it is characterized in that along fourth
Or product is blended in natural rubber and the compound co-vulcanization of PU, it is characterized in that separately add zinc chloride, zinc oxide, magnesium chloride or tristearin
Hydrochlorate wherein at least one；Another 0.5-2 parts of rubber accelerator of addition.Promote DM, promote M, DM or M complex compound.
3. product is blended with the compound co-vulcanization of PU in suitable fourth according to claim 1 or natural rubber, it is characterized in that separately adding
Add 0.5-2 parts of antioxidant.
4. product is blended with the compound co-vulcanization of PU in suitable fourth according to claim 1 or natural rubber, it is characterized in that vulcanization
Activating agent uses zinc dimethacrylate.
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Cited By (2)
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| CN112608534A (en) * | 2020-12-15 | 2021-04-06 | 浙江奋飞橡塑制品有限公司 | Wear-resistant polyurethane rubber, preparation method thereof and application thereof in conveyor belt |
| WO2022194111A1 (en) * | 2021-03-15 | 2022-09-22 | 彰洋材料股份有限公司 | Thermoplastic vulcanizate composition, preparation method therefor and shoe material |
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| CN112608534A (en) * | 2020-12-15 | 2021-04-06 | 浙江奋飞橡塑制品有限公司 | Wear-resistant polyurethane rubber, preparation method thereof and application thereof in conveyor belt |
| WO2022194111A1 (en) * | 2021-03-15 | 2022-09-22 | 彰洋材料股份有限公司 | Thermoplastic vulcanizate composition, preparation method therefor and shoe material |
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Application publication date: 20181113 |