CN107266785A - A kind of nanometer powdered rice hulls RPP foam composite material and preparation method thereof - Google Patents
A kind of nanometer powdered rice hulls RPP foam composite material and preparation method thereof Download PDFInfo
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
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- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C08J2203/20—Ternary blends of expanding agents
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Abstract
The present invention provides a kind of nanometer powdered rice hulls RPP foam composite material and preparation method thereof, and specific preparation method is：Levigate sieve of powdered rice hulls is dried to obtain the rice husk powder of over dry, takes out dry-mixed with esters of silicon acis coupling agent while hot, again heating response, to modified rice husk powder；Basalt fibre and string are added in sulfuric acid solution, agitating and heating activation obtains NBSK fiber；Plain polypropylene particle, high melt strength, propylene powder, modified rice husk powder, NBSK fiber, mixed foaming agent and nano imvite are stirred, is added in double screw extruder and extrudes, obtain hybrid particles；Hybrid particles are placed in supercritical carbon dioxide foaming device and reacted, reaction is rapid in 5 10s after terminating to decline recovery to normal pressure, and cooling and shaping obtains a nanometer powdered rice hulls RPP foam composite material.Uniform foam cell in PP foam material prepared by the present invention, consistency is high, and melt strength is high, and mechanical performance is excellent.
Description
Technical field
The invention belongs to polypropylene foaming composite material technical field, and in particular to a kind of nanometer powdered rice hulls RPP
Foam composite material and preparation method thereof.
Background technology
Polypropylene is the thermoplastic resin by propylene polymerization, is divided into isotactic polypropylene, nothing according to methyl arrangement position
Isotactic polypropylene and syndiotactic polypropylene, polypropylene industrial product is using isotactic thing as main component, and remaining is a random or rule poly- third
Alkene, also including the copolymer of propylene and a small amount of ethene, polypropylene is usually translucent colorless solid, and odorless is nontoxic, structure
Regular and highly crystallized, relatively low heat distortion temperature (100 DEG C), low transparency, low-luster, low rigidity, but have stronger
Impact strength, vicat softening temperature is 150 DEG C, surface rigidity and anti-scratch characteristic very well, in the absence of ESC
Problem.
Polymeric foamable material is a kind of using resin as matrix, and inside has the poromerics of a large amount of bubbles, can be considered as
Solid/gas composite by filler of gas, polymeric foamable material has that density is small, specific strength is high, energy absorption capability is strong
With sound isolating and heat insulating performance it is good the features such as, and polyethylene deals out the cards material with more excellent heat resistance and mechanical property, bending die
Amount is high, and static load power is good, is obtained for and is widely applied in fields such as commodity, packaging, automobile, transport service and buildings.
A kind of preparation method of enhanced polypropylene foaming beads, will easily be crystallized disclosed in Chinese patent CN103509203B
Acrylic resin and high-melting-point binary or ternary acrylic resin copolymer or homopolymer and inorganic or organic crystal into
Core auxiliary agent, and add newborn dispersant, drop fumicants, antioxidant, the auxiliary agent such as antistatic additive and be prepared into through mixing extrusion wire drawing pelletizing
Polypropylene microparticle, then reacted kettle heating pressurization, makes polypropylene microparticle produce the inside pressure outwards expanded at high temperature under high pressure
Power, and in abrupt release to air, obtain enhanced polypropylene foaming beads.From above-mentioned prior art, common poly- third
Alkene is difficult to foaming, it is necessary to by the use of high melt strength, propylene as primary raw material, pass through modifying production process or chemistry
Crosslinking, physical blending, melt it is branched raising its melt strength, reduce its foam difficulty, obtain more preferable foam structure, while
The mechanical property of polypropylene resin foam particle can purposefully be improved.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of nanometer powdered rice hulls RPP foam composite material and its
Preparation method, by the modification rice husk powder, NBSK basalt fibre and bamboo fibre, plain polypropylene of esters of silicon acis coupling agent
Grain, high melt strength, propylene powder, mixed foaming agent and nano imvite are as raw material, after being granulated through spiral squeezing, super to face
Boundary's carbon dioxide reaction obtains a nanometer powdered rice hulls RPP foam composite material.PP foam material prepared by the present invention
Middle uniform foam cell, consistency is high, and melt strength is high, and mechanical performance is excellent.
In order to solve the above technical problems, the technical scheme is that：
A kind of nanometer powdered rice hulls RPP foam composite material, the nanometer powdered rice hulls RPP foaming is compound
The raw material of material include plain polypropylene particle, high melt strength, propylene powder, modified rice husk powder, NBSK fiber,
Mixed foaming agent and nano imvite, the modified rice husk powder are the coupling agent modified micron order rice husk powder of esters of silicon acis, institute
NBSK fiber is stated for sulfuric acid modified basalt fibre and string, the string is bamboo fibre, the mixing
Foaming agent is the mixture of ammonium hydrogen carbonate inorganic foaming agent and azodicarbonamide organic foaming agent.
As the preferred of above-mentioned technical proposal, the nanometer powdered rice hulls RPP foam composite material is through overcritical two
It is prepared by carbonoxide foaming technique.
The present invention also provides the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material, including following step
Suddenly：
(1) it is powdered rice hulls are levigate, 150-200 mesh sieves are crossed, is placed in 105-110 DEG C of baking oven and dries 8-10h, obtain over dry
Rice husk powder, takes out while hot with esters of silicon acis coupling agent the dry-mixed 2-5min in high-speed mixer, is placed again into reaction in baking oven
30min, to modified rice husk powder；
(2) basalt fibre and string are added in sulfuric acid solution, agitating and heating activation obtains NBSK fine
Dimension；
(3) by plain polypropylene particle, high melt strength, propylene powder, the modification rice husk powder of step (1) preparation, step
Suddenly NBSK fiber, mixed foaming agent and the nano imvite that prepared by (2) are stirred, and are added to double screw extruder
Middle extrusion, obtains hybrid particles；
(4) hybrid particles for preparing step (3) are placed in supercritical carbon dioxide foaming device, in 20-25MPa pressure
Under, the reaction time of Co 2 supercritical fluid is 30-60min, and reaction declines rapidly in 5-10s after terminating and recovered to normal
Pressure, cooling and shaping obtains a nanometer powdered rice hulls RPP foam composite material.
As the preferred of above-mentioned technical proposal, in the step (1), the moisture content of the rice husk powder of over dry is less than 1%.
As the preferred of above-mentioned technical proposal, in the step (1), the rice husk powder of over dry and the matter of esters of silicon acis coupling agent
Amount is than being 1:0.2-0.3.
As the preferred of above-mentioned technical proposal, in the step (2), string is bamboo fibre, the basalt fibre
Mass ratio with string is 1:1-2.
As the preferred of above-mentioned technical proposal, in the step (2), the temperature of heat-activated is 80-90 DEG C, and the time is
30-60min。
As the preferred of above-mentioned technical proposal, in the step (3), mixed foaming agent is that mol ratio is 1:0.5-1 carbon
Sour hydrogen ammonium inorganic foaming agent and azodicarbonamide organic foaming agent
As the preferred of above-mentioned technical proposal, in the step (3), plain polypropylene particle, high melt strength, propylene
Powder, modified rice husk powder, NBSK fiber, the mass ratio of mixed foaming agent and nano imvite are 50-60:30-45:
20-30:10-15:15-25:5-10。
As the preferred of above-mentioned technical proposal, in the step (3), the process conditions of extrusion are that the temperature of expulsion area is
180-185 DEG C, the temperature of head is 160 DEG C, and rate of feeding is 80r/min, and engine speed is 100r/min.
Compared with prior art, the invention has the advantages that：
(1) it is modified in nanometer powdered rice hulls RPP foam composite material prepared by the present invention containing silicate coupling agents
Rice husk powder, rice husk powder is micro/nano level, and rice husk powder contains a large amount of nanoscale holes, loose adhesive aggregation, to polypropylene
Acted on superpower toughening modifying, and rice husk powder is compatible with polypropylene material after silicate coupling agents modifying function
Property improve, be conducive to dispersed in polypropylene material, the uniform mechanical property for improving polypropylene material.
(2) receiving with layer structure is contained in nanometer powdered rice hulls RPP foam composite material prepared by the present invention
Rice montmorillonite, nano imvite is with that after mixed with resin, can form more nucleating point, while layer structure can prevent the firm shape of bubble
The merging in nuclear vacuole hole, can prevent cell wall to be destroyed montmorillonite and be orientated along cell wall during bubble growth,
The sphere tangential direction of abscess is oriented parallel to, while preventing bubbles escape, also solidifying cell wall prevents rupture, makes abscess chi
It is very little to diminish, cell density increase.
(3) NBSK fiber, sulphur are contained in nanometer powdered rice hulls RPP foam composite material prepared by the present invention
Hydrochlorate pulp fibres are the basalt fibre and bamboo fibre of sulfuric acid modified processing, and polypropylene is improved using mineral fibres and string
The mechanical property of material, it is sulfuric acid activated after fiber easily form chemical bond and hydrogen bond with polypropylene material surface, improve fiber
With the adhesion of polypropylene material.
(4) nanometer powdered rice hulls RPP foam composite material prepared by the present invention is with plain polypropylene particle, Gao Rong
Body strength polypropylene powder, using fiber and nano material Aided Modification, is sent out as primary raw material through critical carbon dioxide technology
Bubble reaction obtains PP foam material, and PP foam material abscess-size prepared by the present invention is small, and cell density is big, toughness
It is good, good mechanical performance.
Embodiment
Describe the present invention in detail below in conjunction with specific embodiment, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
Embodiment 1：
(1) it is powdered rice hulls are levigate, 150 mesh sieves are crossed, is placed in 105 DEG C of baking ovens and dries 8h, moisture content are obtained exhausted less than 1%
Dry rice husk powder, take out while hot with esters of silicon acis coupling agent in high-speed mixer dry-mixed 2min, wherein, the rice husk powder of over dry
Mass ratio with esters of silicon acis coupling agent is 1:0.2, reaction 30min in 105 DEG C of baking ovens is placed again into, to modified rice husk powder.
(2) it is 1 by mass ratio:1 basalt fibre and plant bamboo fibre is added in 1% sulfuric acid solution, at 80 DEG C
Lower agitating and heating activates 30min, obtains NBSK fiber.
(3) it is 50 by mass ratio:30:20:10:15:5 plain polypropylene particle, high melt strength, propylene powder, change
Property rice husk powder, NBSK fiber, mol ratio be 1:0.5 ammonium hydrogen carbonate and the mixed foaming agent of azodicarbonamide and receive
Rice montmorillonite is stirred, and is added in double screw extruder, is 180 DEG C, the temperature of head according to the temperature of expulsion area
Spend for 160 DEG C, rate of feeding is 80r/min, engine speed is extruded for 100r/min, obtains hybrid particles.
(4) hybrid particles are placed in supercritical carbon dioxide foaming device, under 20MPa pressure, carbon dioxide is super to be faced
The reaction time of boundary's fluid is 30min, and reaction is rapid in 5s after terminating to decline recovery to normal pressure, and cooling and shaping obtains nanometer
Powdered rice hulls RPP foam composite material.
Embodiment 2：
(1) it is powdered rice hulls are levigate, 200 mesh sieves are crossed, is placed in 110 DEG C of baking ovens and dries 10h, moisture content is obtained and is less than 1%
The rice husk powder of over dry, take out while hot with esters of silicon acis coupling agent in high-speed mixer dry-mixed 5min, wherein, the powdered rice hulls of over dry
The mass ratio of end and esters of silicon acis coupling agent is 1:0.3, reaction 30min in 110 DEG C of baking ovens is placed again into, to modified powdered rice hulls
End.
(2) it is 1 by mass ratio:2 basalt fibre and plant bamboo fibre is added in 1% sulfuric acid solution, at 90 DEG C
Lower agitating and heating activates 60min, obtains NBSK fiber.
(3) it is 60 by mass ratio:45:30:15:25:10 plain polypropylene particle, high melt strength, propylene powder,
Modified rice husk powder, NBSK fiber, mol ratio are 1:1 ammonium hydrogen carbonate and the mixed foaming agent of azodicarbonamide and receive
Rice montmorillonite is stirred, and is added in double screw extruder, is 185 DEG C, the temperature of head according to the temperature of expulsion area
Spend for 160 DEG C, rate of feeding is 80r/min, engine speed is extruded for 100r/min, obtains hybrid particles.
(4) hybrid particles are placed in supercritical carbon dioxide foaming device, under 25MPa pressure, carbon dioxide is super to be faced
The reaction time of boundary's fluid is 60min, and reaction is rapid in 10s after terminating to decline recovery to normal pressure, and cooling and shaping obtains nanometer
Powdered rice hulls RPP foam composite material.
Embodiment 3：
(1) it is powdered rice hulls are levigate, 180 mesh sieves are crossed, is placed in 108 DEG C of baking ovens and dries 9h, moisture content are obtained exhausted less than 1%
Dry rice husk powder, take out while hot with esters of silicon acis coupling agent in high-speed mixer dry-mixed 3min, wherein, the rice husk powder of over dry
Mass ratio with esters of silicon acis coupling agent is 1:0.25, reaction 30min in 108 DEG C of baking ovens is placed again into, to modified rice husk powder.
(2) it is 1 by mass ratio:1.5 basalt fibre and plant bamboo fibre is added in 1% sulfuric acid solution, 85
Agitating and heating activates 45min at DEG C, obtains NBSK fiber.
(3) it is 55 by mass ratio:35:25:10:20:7 plain polypropylene particle, high melt strength, propylene powder, change
Property rice husk powder, NBSK fiber, mol ratio be 1:0.7 ammonium hydrogen carbonate and the mixed foaming agent of azodicarbonamide and receive
Rice montmorillonite is stirred, and is added in double screw extruder, is 180 DEG C, the temperature of head according to the temperature of expulsion area
Spend for 160 DEG C, rate of feeding is 80r/min, engine speed is extruded for 100r/min, obtains hybrid particles.
(4) hybrid particles are placed in supercritical carbon dioxide foaming device, under 21MPa pressure, carbon dioxide is super to be faced
The reaction time of boundary's fluid is 50min, and reaction is rapid in 6s after terminating to decline recovery to normal pressure, and cooling and shaping obtains nanometer
Powdered rice hulls RPP foam composite material.
Embodiment 4：
(1) it is powdered rice hulls are levigate, 200 mesh sieves are crossed, is placed in 105 DEG C of baking ovens and dries 9h, moisture content are obtained exhausted less than 1%
Dry rice husk powder, take out while hot with esters of silicon acis coupling agent in high-speed mixer dry-mixed 4min, wherein, the rice husk powder of over dry
Mass ratio with esters of silicon acis coupling agent is 1:0.2, reaction 30min in 105 DEG C of baking ovens is placed again into, to modified rice husk powder.
(2) it is 1 by mass ratio:1.3 basalt fibre and plant bamboo fibre is added in 1% sulfuric acid solution, in 80-
Agitating and heating activates 45min at 90 DEG C, obtains NBSK fiber.
(3) it is 53 by mass ratio:37:22:14:21:6 plain polypropylene particle, high melt strength, propylene powder, change
Property rice husk powder, NBSK fiber, mol ratio be 1:0.7 ammonium hydrogen carbonate and the mixed foaming agent of azodicarbonamide and receive
Rice montmorillonite is stirred, and is added in double screw extruder, is 185 DEG C, the temperature of head according to the temperature of expulsion area
Spend for 160 DEG C, rate of feeding is 80r/min, engine speed is extruded for 100r/min, obtains hybrid particles.
(4) hybrid particles are placed in supercritical carbon dioxide foaming device, under 25MPa pressure, carbon dioxide is super to be faced
The reaction time of boundary's fluid is 45min, and reaction is rapid in 8s after terminating to decline recovery to normal pressure, and cooling and shaping obtains nanometer
Powdered rice hulls RPP foam composite material.
Embodiment 5：
(1) it is powdered rice hulls are levigate, 180 mesh sieves are crossed, is placed in 110 DEG C of baking ovens and dries 9h, moisture content are obtained exhausted less than 1%
Dry rice husk powder, take out while hot with esters of silicon acis coupling agent in high-speed mixer dry-mixed 4min, wherein, the rice husk powder of over dry
Mass ratio with esters of silicon acis coupling agent is 1:0.2, reaction 30min in 110 DEG C of baking ovens is placed again into, to modified rice husk powder.
(2) it is 1 by mass ratio:1.6 basalt fibre and plant bamboo fibre is added in 1% sulfuric acid solution, in 80-
Agitating and heating activates 40min at 90 DEG C, obtains NBSK fiber.
(3) it is 53 by mass ratio:40:23:14:21:7 plain polypropylene particle, high melt strength, propylene powder, change
Property rice husk powder, NBSK fiber, mol ratio be 1:0.7 ammonium hydrogen carbonate and the mixed foaming agent of azodicarbonamide and receive
Rice montmorillonite is stirred, and is added in double screw extruder, is 185 DEG C, the temperature of head according to the temperature of expulsion area
Spend for 160 DEG C, rate of feeding is 80r/min, engine speed is extruded for 100r/min, obtains hybrid particles.
(4) hybrid particles are placed in supercritical carbon dioxide foaming device, under 25MPa pressure, carbon dioxide is super to be faced
The reaction time of boundary's fluid is 50min, and reaction is rapid in 7s after terminating to decline recovery to normal pressure, and cooling and shaping obtains nanometer
Powdered rice hulls RPP foam composite material.
Embodiment 6：
(1) it is powdered rice hulls are levigate, 160 mesh sieves are crossed, is placed in 105 DEG C of baking ovens and dries 8h, moisture content are obtained exhausted less than 1%
Dry rice husk powder, take out while hot with esters of silicon acis coupling agent in high-speed mixer dry-mixed 3min, wherein, the rice husk powder of over dry
Mass ratio with esters of silicon acis coupling agent is 1:0.3, reaction 30min in 105 DEG C of baking ovens is placed again into, to modified rice husk powder.
(2) it is 1 by mass ratio:2 basalt fibre and plant bamboo fibre is added in 1% sulfuric acid solution, at 90 DEG C
Lower agitating and heating activates 50min, obtains NBSK fiber.
(3) it is 60 by mass ratio:35:20:15:20:7 plain polypropylene particle, high melt strength, propylene powder, change
Property rice husk powder, NBSK fiber, mol ratio be 1:0.6 ammonium hydrogen carbonate and the mixed foaming agent of azodicarbonamide and receive
Rice montmorillonite is stirred, and is added in double screw extruder, is 180 DEG C, the temperature of head according to the temperature of expulsion area
Spend for 160 DEG C, rate of feeding is 80r/min, engine speed is extruded for 100r/min, obtains hybrid particles.
(4) hybrid particles are placed in supercritical carbon dioxide foaming device, under 25MPa pressure, carbon dioxide is super to be faced
The reaction time of boundary's fluid is 30min, and reaction is rapid in 10s after terminating to decline recovery to normal pressure, and cooling and shaping obtains nanometer
Powdered rice hulls RPP foam composite material.
After testing, the nanometer powdered rice hulls RPP foam composite material and prior art that prepared by embodiment 1-6
The result of the pore property of PP foam material, loss of weight situation and mechanical property is as follows：
As seen from the above table, the nanometer powdered rice hulls RPP foam composite material abscess-size that prepared by the present invention is small, bubble
Hole density is big, good toughness, good mechanical performance.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of nanometer powdered rice hulls RPP foam composite material, it is characterised in that：The nanometer powdered rice hulls enhancing poly- third
The raw material of alkene foam composite material includes plain polypropylene particle, high melt strength, propylene powder, modified rice husk powder, sulfuric acid
Salt pulp fibres, mixed foaming agent and nano imvite, the modified rice husk powder are the coupling agent modified micron order rice of esters of silicon acis
Shell powder, the NBSK fiber is sulfuric acid modified basalt fibre and string, and the string is bamboo fibre,
The mixed foaming agent is the mixture of ammonium hydrogen carbonate inorganic foaming agent and azodicarbonamide organic foaming agent.
2. a kind of nanometer powdered rice hulls RPP foam composite material according to claim 1, it is characterised in that：It is described
Nanometer powdered rice hulls RPP foam composite material is prepared through supercritical carbon dioxide foaming technology.
3. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material, it is characterised in that comprise the following steps：
(1) it is powdered rice hulls are levigate, 150-200 mesh sieves are crossed, is placed in 105-110 DEG C of baking oven and dries 8-10h, obtain the rice husk of over dry
Powder, takes out while hot with esters of silicon acis coupling agent the dry-mixed 2-5min in high-speed mixer, is placed again into reaction 30min in baking oven,
To modified rice husk powder；
(2) basalt fibre and string are added in sulfuric acid solution, agitating and heating activation obtains NBSK fiber；
(3) by plain polypropylene particle, high melt strength, propylene powder, the modification rice husk powder of step (1) preparation, step
(2) NBSK fiber, mixed foaming agent and the nano imvite prepared is stirred, and is added in double screw extruder
Extrusion, obtains hybrid particles；
(4) hybrid particles for preparing step (3) are placed in supercritical carbon dioxide foaming device, under 20-25MPa pressure,
The reaction time of Co 2 supercritical fluid is 30-60min, and reaction is rapid in 5-10s after terminating to decline recovery to normal pressure,
Cooling and shaping, obtains a nanometer powdered rice hulls RPP foam composite material.
4. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material according to claim 3, it is special
Levy and be：In the step (1), the moisture content of the rice husk powder of over dry is less than 1%.
5. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material according to claim 3, it is special
Levy and be：In the step (1), the rice husk powder of over dry is 1 with the mass ratio of esters of silicon acis coupling agent:0.2-0.3.
6. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material according to claim 3, it is special
Levy and be：In the step (2), string is bamboo fibre, and the mass ratio of the basalt fibre and string is 1:1-
2。
7. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material according to claim 3, it is special
Levy and be：In the step (2), the temperature of heat-activated is 80-90 DEG C, and the time is 30-60min.
8. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material according to claim 3, it is special
Levy and be：In the step (3), mixed foaming agent is that mol ratio is 1:0.5-1 ammonium hydrogen carbonate inorganic foaming agent and azo two
Formamide organic foaming agent.
9. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material according to claim 3, it is special
Levy and be：In the step (3), plain polypropylene particle, high melt strength, propylene powder, modified rice husk powder, sulfate
The mass ratio of pulp fibres, mixed foaming agent and nano imvite is 50-60:30-45:20-30:10-15:15-25:5-10.
10. the preparation method of a kind of nanometer of powdered rice hulls RPP foam composite material according to claim 3, it is special
Levy and be：In the step (3), the process conditions of extrusion are that the temperature of expulsion area is 180-185 DEG C, and the temperature of head is
160 DEG C, rate of feeding is 80r/min, and engine speed is 100r/min.
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| CN201710541155.XA CN107266785A (en) | 2017-07-05 | 2017-07-05 | A kind of nanometer powdered rice hulls RPP foam composite material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628126A (en) * | 2018-06-22 | 2019-12-31 | 佛吉亚汽车内部设备工业公司 | Composition based on natural fibres and powdered polypropylene homopolymer |
| CN112876765A (en) * | 2021-01-19 | 2021-06-01 | 温州劲泰新材料有限公司 | Preparation method of high-efficiency supercritical die-pressing foaming elastomer |
-
2017
- 2017-07-05 CN CN201710541155.XA patent/CN107266785A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628126A (en) * | 2018-06-22 | 2019-12-31 | 佛吉亚汽车内部设备工业公司 | Composition based on natural fibres and powdered polypropylene homopolymer |
| CN112876765A (en) * | 2021-01-19 | 2021-06-01 | 温州劲泰新材料有限公司 | Preparation method of high-efficiency supercritical die-pressing foaming elastomer |
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