CN104710666A - Rigid polyurethane foam particle modified rubber composite material, preparation method and application thereof - Google Patents

Rigid polyurethane foam particle modified rubber composite material, preparation method and application thereof Download PDF

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CN104710666A
CN104710666A CN201310695681.3A CN201310695681A CN104710666A CN 104710666 A CN104710666 A CN 104710666A CN 201310695681 A CN201310695681 A CN 201310695681A CN 104710666 A CN104710666 A CN 104710666A
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hard polyaminoester
granule
waste
rubber composite
modified rubber
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CN104710666B (en
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程青民
张云河
陈武
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Jiangxi Green Recycling Industry Co.,Ltd.
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Shenzhen Gem High Tech Co Ltd
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Abstract

The invention provides a rigid polyurethane foam particle modified rubber composite material, which comprises the following components by weight part, 30-50 of waste tire rubber particles, 30-50 of waste rigid polyurethane foam particles, 5-10 of a flame retardant, 4-10 of an adhesive, and 0.5-3 of a colorant. According to the invention, waste tire rubber particles and polyurethane foam are employed to prepare the composite material, the waste resource utilization is improved, and simultaneously a new technology of waste high polymer material application is developed. The invention also provides a preparation method for the rigid polyurethane foam particle modified rubber composite material. The method has a simple process and is easy to operate, and the prepared rubber composite material has the characteristics of small density, strong permeability, low cost and excellent performance. The invention also provides application of the rigid polyurethane foam particle modified rubber composite material in road construction aspect.

Description

Granule modified rubber composite of a kind of hard polyaminoester foam and its preparation method and application
Technical field
The present invention relates to field of compound material, be specifically related to granule modified rubber composite of a kind of hard polyaminoester foam and its preparation method and application.
Background technology
The mankind enter 21 century, and the recycling of spent high molecular material has become a urgent problem.The accumulation of a large amount of spent high molecular material not only causes the waste of resource, and causes pollution to environment.Waste refrigeration plant (comprising refrigerator, refrigerator) can produce a large amount of waste and old hard polyaminoester foams after disassembling, waste and old hard polyaminoester foam is a kind of three-dimensional netted highly cross-linked thermosetting material, be difficult to dissolve or fusing, and density is lower, not easy to be recycled.In recent years, along with China steps into the peak period that waste refrigeration plant scraps, the generation of a large amount of Methods for Polyurethane Wastes not only causes the waste of resource, and also creates disadvantageous effect to ecotope.Simultaneously due to the development of domestic automobile industry, the quantity of junked tire increases year by year, how to reduce the pollution of junked tire and polyurethane foam, and its reasonable recycling has been become current problem demanding prompt solution.
At present comminuting method, physiochemical mutagens, chemical recovery and burning are mainly comprised to the recovery method of polyurethane foam and reclaim heat energy etc.Thermolysis recovering liquid fuels and chemicals, fuel utilization, reclaimed rubber utilization, rubber powder utilization etc. are mainly comprised to waste tire rubber goods.There is method complexity in existing recycling, state of the art is low, the consumption energy is large, and easily cause the problem of secondary pollution; So the recycling situation of China to thermosetting foam plastics waste is unsatisfactory, is mostly just developed for the thermoplastic foam of regenerating easily, lacked the recoverying and utilizing method of the thermosetting foam plastics to difficult life.
Summary of the invention
In order to solve the problem of existing waste tire rubber and waste and old hard polyaminoester foam no pollution resource utilization difficulty, the invention provides granule modified rubber composite of a kind of hard polyaminoester foam and its preparation method and application.Waste and old scrap tire rubber and polyurethane foam particle are prepared into matrix material by the method, not only increase the new technology that waste and old resource utilization also developed the application of a kind of spent high molecular material; The granule modified rubber composite of hard polyaminoester foam prepared by the method has the advantage that density is low, perviousness is strong, present invention also offers the application of the granule modified rubber composite of a kind of hard polyaminoester foam in Road construction.
First aspect, the invention provides the granule modified rubber composite of a kind of hard polyaminoester foam, by weight, comprise following component: waste tire rubber granule 30 ~ 50, waste and old hard polyaminoester foam particle 30 ~ 50, fire retardant 5 ~ 10, sizing agent 4 ~ 10, tinting material 0.5 ~ 3.
Each component in the granule modified rubber composite of hard polyaminoester foam makes the excellent property of this matrix material through rational proportion.
Described waste tire rubber granule is the particle of junked tire after disassembling fragmentation of automobile dismounting or daily recovery.Preferably, the particle diameter of described waste tire rubber granule is grade.Preferably, the particle size range of described waste tire rubber granule is 1 ~ 5mm.
Described waste and old hard polyaminoester foam particle is the waste and old hard polyaminoester foam that electron wastes disassembles generation, obtains through fragmentation.Preferably, the particle diameter of described hard polyaminoester foam particle is grade.Preferably, the particle size range of described waste and old hard polyaminoester foam particle is 0.5 ~ 4mm.
Waste and old hard polyaminoester foam particle is directly obtained through simple fragmentation, so have the low density advantage of large lump waste materials.
Preferably, described fire retardant comprises one or more the combination in tetraphenyl (bisphenol-A) bisphosphate (BDP), Resorcinol two (phenylbenzene) phosphoric acid ester (RDP), ammonium polyphosphate (APP) and triphenylphosphate (TPP).
Described fire retardant is phosphorus-nitrogen containing flame retardant, and phosphorus-nitrogen containing flame retardant is environmental protection fire retarding agent, and have dual-use function that is fire-retardant and plasticising, flame retarding efficiency is high, and can realize fire retardant non-halogen, the amount of being fuming is lower; When plasticising function can make plastic shaping, flow processability improves, and can suppress the residue after burning, poisonous gas and the corrosive gases of generation are less, and especially the consistency of phosphoric acid ester and urethane is fine; In addition, phosphorus-nitrogen containing flame retardant facile hydrolysis, biodegradable, there is no environmental persistence and biological accumulation.
Preferably, described sizing agent is polyurethane-type sizing agent.
Described polyurethane adhesive is environment-protecting polyurethane type sizing agent, usually has highly filled, low viscosity, technique suitability is good, bounding force is strong, the advantage such as nontoxic; Also have good machining property and wettability, after compound, just sticky effect is obvious especially, has good transparency and elasticity, ageing-resistant, and economical and practical environmental protection.
Preferably, described tinting material is at least one in titanium dioxide, carbon black, iron oxide red, iron oxide yellow, titanium viridescent and titanium ultramarine.
The component of the granule modified rubber composite of described hard polyaminoester foam is waste tire rubber granule and waste and old hard polyaminoester foam particle, described waste and old hard polyaminoester foam particle can retain the low density advantage of large lump waste materials, the open-celled structure simultaneously existed in hard polyaminoester foam particle and rubber grain and polyurethane foam void among particles, space between rubber grain and rubber grain and polyurethane foam particle and polyurethane foam void among particles make the hard polyaminoester foam granule modified rubber composite density that obtains little, perviousness is strong, the granule modified rubber composite of described hard polyaminoester foam is used for Road construction aspect, surface rain water is made to leak into underground, can effectively solve urban road drainage problem,
And, in the compositing range of the granule modified rubber composite of hard polyaminoester foam provided by the invention, according to different areas quantity of precipitation, can be prepared by the size and consumption proportion regulating waste and old rubber particle and waste and old hard polyaminoester foam particle and various there is different densities and the granule modified rubber composite of infiltrative hard polyaminoester foam, can meet the Road construction demand of different areas, therefore suitability and practicality are very strong;
In addition, the raw material used due to the granule modified rubber composite of hard polyaminoester foam is all waste, so have the low advantage of cost.
Second aspect, the invention provides the preparation method of the granule modified rubber composite of a kind of hard polyaminoester foam, comprises the following steps:
(1) waste tire rubber granule is provided;
(2) waste and old hard polyaminoester foam particle is provided;
(3) banburying is mixed: by weight: waste tire rubber granule 30 ~ 50, waste and old hard polyaminoester foam particle 30 ~ 50, fire retardant 5 ~ 10, sizing agent 4 ~ 10, tinting material 0.5 ~ 3 takes material, then joins in mill by described waste tire rubber granule, waste and old hard polyaminoester foam particle, fire retardant, sizing agent and tinting material respectively successively, mixing banburying 5 ~ 10min, to be mixed evenly after, obtain sheet material base;
(4) hot-forming: the sheet material base that step (3) obtains is put into mould, hot-formingly obtain the granule modified rubber composite work in-process of hard polyaminoester foam, then take out product and obtain the granule modified rubber composite of described hard polyaminoester foam through shearing, after deburring.
Preferably; in described step (1) by the junked tire of automobile dismounting or daily recovery through clean, drying, cut, fragmentation, to sieve; the rubber grain screened is carried out activation treatment, then cleans, dry, obtain described waste tire rubber granule for subsequent use.
Preferably, described in step (1), the particle size range of waste tire rubber granule is 1 ~ 5mm.
Preferably, in described step (2), electron wastes is disassembled the polyurethane foam of generation through cleaning, drying, that fragmentation obtains waste and old hard polyaminoester foam particle is for subsequent use.
Preferably, described in step (2), the particle size range of waste and old hard polyaminoester foam particle is 0.5 ~ 4mm.
Preferably, fire retardant described in step (3) comprises one or more the combination in tetraphenyl (bisphenol-A) bisphosphate (BDP), Resorcinol two (phenylbenzene) phosphoric acid ester (RDP), ammonium polyphosphate (APP) and triphenylphosphate (TPP).
Preferably, described in step (3), sizing agent is polyurethane-type sizing agent.
Preferably, tinting material described in step (3) is at least one in titanium dioxide, carbon black, iron oxide red, iron oxide yellow, titanium viridescent and titanium ultramarine.
Preferably, described in step (4), the processing parameter of hot-forming process is: tabletting machine temperature is 50 ~ 150 DEG C, and pressure is 3 ~ 10MPa, and the dwell time is 5 ~ 10min.
The preparation method of the granule modified rubber composite of described hard polyaminoester foam adopts waste tire rubber and waste and old hard polyaminoester foam particle as raw material, and one is that the preparation of particulate material is more simple and easy to do, and technique is simple, and energy consumption is low, production cost is low; Two is that particulate material remains the low density advantage of large lump waste materials, and the space between particulate material and particulate material makes the composite density of preparation little, and perviousness is strong.On the other hand, the harmless resource utilization that described preparation method achieves waste tire rubber and waste and old rigid polyurethane foam cotton material utilizes, and has the advantages such as inexpensive, environmental protection, economic benefit are high.
The third aspect, the invention provides the application of the granule modified rubber composite of a kind of hard polyaminoester foam in Road construction.
Compared with prior art, the present invention has following beneficial effect:
1, to have density little for the granule modified rubber composite of hard polyaminoester foam provided by the invention, and perviousness is strong, and cost is low, the advantage of excellent performance, high financial profit;
2, the preparation method of the granule modified rubber composite of hard polyaminoester foam provided by the invention, waste tire rubber granule and polyurethane foam particle is utilized to be prepared into matrix material for raw material, turn waste into wealth, reach innoxious, the recycling of waste and scrap, this preparation method has environmental protection, raw material supply is extensive, technique is simple, easily operate, energy consumption is low, be easy to the advantages such as scale operation;
3, the invention provides the application of the granule modified rubber composite of a kind of hard polyaminoester foam in Road construction, due to adding and the design of structure of hard polyaminoester foam in waste and old hard polyaminoester foam modified rubber floor tile, surface rain water can well leak into underground, effectively can solve the problem of urban groundwater disappearance.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
A preparation method for the granule modified rubber composite of hard polyaminoester foam, comprises the following steps:
(1) junked tire of automobile dismounting or recovery is put into clear water to clean up, remove booty, taking-up is dried, then carry out cutting, broken, sieve after select the rubber grain that particle size range is 1 ~ 5mm; The rubber grain screened is put into hydrochloric acid soln, carries out activation treatment after 15 minutes, taking-up clean water is clean and dry, and obtains described waste tire rubber granule for subsequent use;
(2) polyurethane foam electron wastes being disassembled generation is put into clear water and is cleaned up, and taking-up is dried, and being then broken into particle size range is that the waste and old hard polyaminoester foam particle of 0.5 ~ 4mm is for subsequent use;
(3) by weight: waste tire rubber granule 44 parts, waste and old hard polyaminoester foam particle 40 parts, ammonium polyphosphate 8 parts, adhesive for polyurethane 6 parts, tinting material 2 parts take material, then respectively described waste tire rubber granule, waste and old hard polyaminoester foam particle, ammonium polyphosphate, adhesive for polyurethane and tinting material are joined in mill successively, mixing banburying 8min, to be mixed evenly after, prepare sheet material base on a mill until according to die size;
(4) the sheet material base that step (3) obtains is put into mould, hot-formingly obtain the granule modified rubber composite work in-process of hard polyaminoester foam, wherein, tabletting machine temperature is 75 DEG C, pressure is 3MPa, dwell time is 5min, then takes out product and obtain the granule modified rubber composite of described hard polyaminoester foam after shearing, deburring.
The granule modified rubber composite of hard polyaminoester foam prepared by the present embodiment, can be used as floor tile, described floor tile can be applicable to Road construction.Test the performance of the granule modified rubber composite of described hard polyaminoester foam, recording apparent density is 0.76g/cm 3, tensile yield is 54%, and seepage rate is 46%, and visible hard polyaminoester foam provided by the invention granule modified rubber composite density is low, and perviousness is strong, excellent performance.
Embodiment 2
A preparation method for the granule modified rubber composite of hard polyaminoester foam, comprises the following steps:
(1) junked tire of automobile dismounting or recovery is put into clear water to clean up, remove booty, taking-up is dried, then carry out cutting, broken, sieve after select the rubber grain that particle size range is 1 ~ 5mm; The rubber grain screened is put into hydrochloric acid soln, carries out activation treatment after 12 minutes, taking-up clean water is clean and dry, and obtains described waste tire rubber granule for subsequent use;
(2) polyurethane foam electron wastes being disassembled generation is put into clear water and is cleaned up, and taking-up is dried, and being then broken into particle size range is that the waste and old hard polyaminoester foam particle of 0.5 ~ 4mm is for subsequent use;
(3) by weight: waste tire rubber granule 36 parts, waste and old hard polyaminoester foam particle 46 parts, triphenylphosphate 7.5 parts, adhesive for polyurethane 10 parts, tinting material 0.5 part take material, then respectively described waste tire rubber granule, waste and old hard polyaminoester foam particle, triphenylphosphate, adhesive for polyurethane and tinting material are joined in mill successively, mixing banburying 8min, to be mixed evenly after, prepare sheet material base on a mill until according to die size;
(4) the sheet material base that step (3) obtains is put into mould, hot-formingly obtain the granule modified rubber composite work in-process of hard polyaminoester foam, wherein, tabletting machine temperature is 65 DEG C, pressure is 4MPa, dwell time is 6min, then takes out product and obtain the granule modified rubber composite of described hard polyaminoester foam after shearing, deburring.
The granule modified rubber composite of hard polyaminoester foam prepared by the present embodiment, can be used as floor tile, described floor tile can be applicable to Road construction.Test the performance of the granule modified rubber composite of described hard polyaminoester foam, recording apparent density is 0.71g/cm 3, tensile yield is 64%, and seepage rate is 51%, and visible hard polyaminoester foam provided by the invention granule modified rubber composite density is low, and perviousness is strong, excellent performance.
Embodiment 3
A preparation method for the granule modified rubber composite of hard polyaminoester foam, comprises the following steps:
(1) junked tire of automobile dismounting or recovery is put into clear water to clean up, remove booty, taking-up is dried, then carry out cutting, broken, sieve after select the rubber grain that particle size range is 1 ~ 5mm; The rubber grain screened is put into hydrochloric acid soln, carries out activation treatment after 7 minutes, taking-up clean water is clean and dry, and obtains described waste tire rubber granule for subsequent use;
(2) polyurethane foam electron wastes being disassembled generation is put into clear water and is cleaned up, and taking-up is dried, and being then broken into particle size range is that the waste and old hard polyaminoester foam particle of 0.5 ~ 4mm is for subsequent use;
(3) by weight: waste tire rubber granule 30 parts, waste and old hard polyaminoester foam particle 50 parts, triphenylphosphate 10 parts, adhesive for polyurethane 7 parts, tinting material 3 parts take material, then respectively described waste tire rubber granule, waste and old hard polyaminoester foam particle, triphenylphosphate, adhesive for polyurethane and tinting material are joined in mill successively, mixing banburying 5min, to be mixed evenly after, prepare sheet material base on a mill until according to die size;
(4) the sheet material base that step (3) obtains is put into mould, hot-formingly obtain the granule modified rubber composite work in-process of hard polyaminoester foam, wherein, tabletting machine temperature is 50 DEG C, pressure is 3MPa, dwell time is 5min, then takes out product and obtain the granule modified rubber composite of described hard polyaminoester foam after shearing, deburring.
The granule modified rubber composite of hard polyaminoester foam prepared by the present embodiment, can be used as floor tile, described floor tile can be applicable to Road construction.Test the performance of the granule modified rubber composite of described hard polyaminoester foam, recording apparent density is 0.65g/cm 3, tensile yield is 46%, and seepage rate is 53%, and visible hard polyaminoester foam provided by the invention granule modified rubber composite density is low, and perviousness is strong, excellent performance.
Embodiment 4
A preparation method for the granule modified rubber composite of hard polyaminoester foam, comprises the following steps:
(1) junked tire of automobile dismounting or recovery is put into clear water to clean up, remove booty, taking-up is dried, then carry out cutting, broken, sieve after select the rubber grain that particle size range is 1 ~ 5mm; The rubber grain screened is put into hydrochloric acid soln, carries out activation treatment after 15 minutes, taking-up clean water is clean and dry, and obtains described waste tire rubber granule for subsequent use;
(2) polyurethane foam electron wastes being disassembled generation is put into clear water and is cleaned up, and taking-up is dried, and being then broken into particle size range is that the waste and old hard polyaminoester foam particle of 0.5 ~ 4mm is for subsequent use;
(3) by weight: waste tire rubber granule 50 parts, waste and old hard polyaminoester foam particle 38 parts, tetraphenyl (bisphenol-A) bisphosphate 5 parts, adhesive for polyurethane 4 parts, tinting material 3 parts take material, then respectively described waste tire rubber granule, waste and old hard polyaminoester foam particle, tetraphenyl (bisphenol-A) bisphosphate, adhesive for polyurethane and tinting material are joined in mill successively, mixing banburying 10min, to be mixed evenly after, prepare sheet material base on a mill until according to die size;
(4) the sheet material base that step (3) obtains is put into mould, hot-formingly obtain the granule modified rubber composite work in-process of hard polyaminoester foam, wherein, tabletting machine temperature is 150 DEG C, pressure is 10MPa, dwell time is 10min, then takes out product and obtain the granule modified rubber composite of described hard polyaminoester foam after shearing, deburring.
The granule modified rubber composite of hard polyaminoester foam prepared by the present embodiment, can be used as floor tile, described floor tile can be applicable to Road construction.Test the performance of the granule modified rubber composite of described hard polyaminoester foam, recording apparent density is 0.86g/cm 3, tensile yield is 63%, and seepage rate is 47%, and visible hard polyaminoester foam provided by the invention granule modified rubber composite density is low, and perviousness is strong, excellent performance.
Embodiment 5
A preparation method for the granule modified rubber composite of hard polyaminoester foam, comprises the following steps:
(1) junked tire of automobile dismounting or recovery is put into clear water to clean up, remove booty, taking-up is dried, then carry out cutting, broken, sieve after select the rubber grain that particle size range is 1 ~ 5mm; The rubber grain screened is put into hydrochloric acid soln, carries out activation treatment after 15 minutes, taking-up clean water is clean and dry, and obtains described waste tire rubber granule for subsequent use;
(2) polyurethane foam electron wastes being disassembled generation is put into clear water and is cleaned up, and taking-up is dried, and being then broken into particle size range is that the waste and old hard polyaminoester foam particle of 0.5 ~ 4mm is for subsequent use;
(3) by weight: waste tire rubber granule 50 parts, waste and old hard polyaminoester foam particle 30 parts, triphenylphosphate 6 parts, two (phenylbenzene) phosphoric acid ester 3 parts of Resorcinol, adhesive for polyurethane 8 parts, tinting material 3 parts takes material, then successively respectively by described waste tire rubber granule, waste and old hard polyaminoester foam particle, triphenylphosphate and two (phenylbenzene) phosphoric acid ester of Resorcinol, adhesive for polyurethane, tinting material joins in mill, mixing banburying 10min, to be mixed evenly after, sheet material base is prepared on a mill until according to die size,
(4) the sheet material base that step (3) obtains is put into mould, hot-formingly obtain the granule modified rubber composite work in-process of hard polyaminoester foam, wherein, tabletting machine temperature is 150 DEG C, pressure is 10MPa, dwell time is 10min, then takes out product and obtain the granule modified rubber composite of described hard polyaminoester foam after shearing, deburring.
The granule modified rubber composite of hard polyaminoester foam prepared by the present embodiment, can be used as floor tile, described floor tile can be applicable to Road construction.Test the performance of the granule modified rubber composite of described hard polyaminoester foam, recording apparent density is 0.87g/cm 3, tensile yield is 61%, and seepage rate is 45%, and visible hard polyaminoester foam provided by the invention granule modified rubber composite density is low, and perviousness is strong, excellent performance.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. the granule modified rubber composite of hard polyaminoester foam, is characterized in that, by weight, comprise following component: waste tire rubber granule 30 ~ 50, waste and old hard polyaminoester foam particle 30 ~ 50, fire retardant 5 ~ 10, sizing agent 4 ~ 10, tinting material 0.5 ~ 3.
2. the granule modified rubber composite of hard polyaminoester foam according to claim 1, is characterized in that, the particle size range of described waste tire rubber granule is 1 ~ 5mm.
3. the granule modified rubber composite of hard polyaminoester foam according to claim 1, is characterized in that, the particle size range of described waste and old hard polyaminoester foam particle is 0.5 ~ 4mm.
4. the granule modified rubber composite of hard polyaminoester foam according to claim 1, it is characterized in that, described fire retardant comprises one or more the combination in tetraphenyl (bisphenol-A) bisphosphate, Resorcinol two (phenylbenzene) phosphoric acid ester, ammonium polyphosphate and triphenylphosphate.
5. the granule modified rubber composite of hard polyaminoester foam according to claim 1, is characterized in that, described sizing agent is polyurethane-type sizing agent.
6. a preparation method for the granule modified rubber composite of hard polyaminoester foam, is characterized in that, comprise the following steps:
(1) waste tire rubber granule is provided;
(2) waste and old hard polyaminoester foam particle is provided;
(3) banburying is mixed: by weight: waste tire rubber granule 30 ~ 50, waste and old hard polyaminoester foam particle 30 ~ 50, fire retardant 5 ~ 10, sizing agent 4 ~ 10, tinting material 0.5 ~ 3 takes material, then joins in mill by described waste tire rubber granule, waste and old hard polyaminoester foam particle, fire retardant, sizing agent and tinting material respectively successively, mixing banburying 5 ~ 10min, to be mixed evenly after, obtain sheet material base;
(4) hot-forming: the sheet material base that step (3) obtains is put into mould, hot-formingly obtain the granule modified rubber composite work in-process of hard polyaminoester foam, then take out product and obtain the granule modified rubber composite of described hard polyaminoester foam through shearing, after deburring.
7. the preparation method of the granule modified rubber composite of hard polyaminoester foam according to claim 6, is characterized in that, described in step (1), the particle size range of waste tire rubber granule is 1 ~ 5mm.
8. the preparation method of the granule modified rubber composite of hard polyaminoester foam according to claim 6, is characterized in that, described in step (2), the particle size range of waste and old hard polyaminoester foam particle is 0.5 ~ 4mm.
9. the preparation method of the granule modified rubber composite of hard polyaminoester foam according to claim 6, it is characterized in that, described in step (4), the processing parameter of hot-forming process is: tabletting machine temperature is 50 ~ 150 DEG C, and pressure is 3 ~ 10MPa, and the dwell time is 5 ~ 10min.
10. the application of the granule modified rubber composite of hard polyaminoester foam in Road construction.
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CN109517363A (en) * 2018-11-12 2019-03-26 金陵科技学院 A kind of nylon fiber enhancing compound polyurethane material and preparation method thereof
CN115368651A (en) * 2022-09-14 2022-11-22 交通运输部公路科学研究所 Sound absorption material for recycling waste tire rubber and preparation method thereof
CN115368651B (en) * 2022-09-14 2023-11-28 交通运输部公路科学研究所 Sound absorption material for recycling waste tire rubber and preparation method thereof

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