CN104403338A - Uniform mixing method of wood powder and inorganic reinforced particles - Google Patents
Uniform mixing method of wood powder and inorganic reinforced particles Download PDFInfo
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- CN104403338A CN104403338A CN201410606392.6A CN201410606392A CN104403338A CN 104403338 A CN104403338 A CN 104403338A CN 201410606392 A CN201410606392 A CN 201410606392A CN 104403338 A CN104403338 A CN 104403338A
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Abstract
The invention discloses a uniform mixing method of wood powder and inorganic reinforced particles. The method is characterized by comprising preparing plastic wood powder, mixing the plastic wood powder and inorganic reinforced particles to obtain two-component mixed powder, and mixing the two-component mixed powder and wood powder with particle sizes less than 500 microns. The uniform mixing method realizes segregation-free uniform mixing of wood powder and inorganic reinforced particles, has simple processes, has no high temperature and high pressure condition requirements on all the processes, prevents influence produced by inorganic reinforced particle clustering, oxidation, decomposition and segregation on final performances of mixed powder and products, utilizes conventional equipment in processes, is free of dispersant and binder additives with high prices, has a low cost and can be massively produced and popularized.
Description
Technical field
The invention belongs to powder body material field, particularly the wooden powder of the wooden material for sliding bearing of a kind of particle strengthening for the preparation of alternative sintered bronze and the uniform mixing method of inorganic enhanced particles.
Background technology
Along with the development of modern powder deep processing technology, powder mixing is more and more applied in novel material exploitation, and various hybrid technique occurs as emerged rapidly in large numbersBamboo shoots after a spring rain with equipment.Traditional powder blending means, due to processes such as placement, transport and fillings, the metal added, non-metal powder produce segregation, cause the composition of the goods adopting mixed powder die forming technique to obtain, performance and overall dimensions generation fluctuation.In recent years, field of powder metallurgy, by the employing of the innovation of mixing equipment and technique, novel dispersant, binding agent, makes the problems referred to above obtain good solution; But owing to employing special specific equipment, complicated technical process, expensive dispersion agent and binding agent, make large-scale production scale of investment surprising, cause the cost of mixed powder and goods significantly to increase, be unfavorable for promoting.The fibrous wooden powder that simultaneously these known blending meanss are comparatively strong for surface polarity, loose density is only about 0.2g/cm3 and loose density more seem unable to do what one wishes up to the Homogeneous phase mixing of the fine copper powder of several times, nano-corundum powder, nanometer silica powder, nano oxidized bismuth meal, one is the processing requirement being difficult to meet mixture homogeneity >98%, and two is that the segregation of die forming procedure component is serious.Therefore seek a kind of technique powder segregation-free uniform mixing method simple, with low cost and become study hotspot in industry.
Summary of the invention
The technical problem to be solved in the present invention is: the defect existed in wooden powder mixes with inorganic enhanced particles for existing powder hybrid technology, there is provided that a kind of technique is simple, powder segregation-free, uniform mixing method with low cost, that is: the uniform mixing method of a kind of wooden powder and inorganic enhanced particles.
In order to realize above object, the technical solution used in the present invention is: the uniform mixing method of a kind of wooden powder and inorganic enhanced particles, it is characterized in that comprising the following steps:
Step 1: the wooden powder of granularity <500um and high density polyethylene(HDPE) particle are pressed massfraction in flakes more mixing than 30% ~ 40%:60% ~ 70%, and through cooling, pulverize, plasticizing wooden powder that screening obtains granularity < 250um is for subsequent use;
Step 2: by the plasticizing of step 1 gained wooden powder and inorganic enhanced particles in mass ratio 3:2 ~ 8:2 be placed in two-dimensional motion mixer and mix 30 ~ 60min, obtain even two-dimensional mixing powder;
Step 3: by the wooden powder of step 2 gained two-dimensional mixing powder and granularity <500um in mass ratio 1:4 ~ 1:9 be placed in three-dimensional motion mixer and mix 60 ~ 90min, obtain required uniform three dimensional powder mix.
Described wooden powder is the mixture of one or more that forestry three remains in thing powder, reed stalk powder, agricultural crop straw powder and agricultural shell powder; Wherein said forestry three remains thing and comprises trees, bamboo logging residue, saw lumber residuum and industrial wood waste.
Inorganic enhanced particles described in step 2 is the mixture of one or more in the fine red copper powder of granularity < 75um, the nano-corundum powder of granularity < 300nm, nanometer silica powder, nano oxidized bismuth meal.
Under better performance, wooden powder described in step 1 is 35%:65% with the mixing mark ratio of high density polyethylene(HDPE) particle.
Under better performance, the plasticizing wooden powder described in step 2 and inorganic enhanced particles in mass ratio 5:2 are placed in two-dimensional motion mixer and mix.
Under better performance, the mixing time plastifying wooden powder and inorganic enhanced particles described in step 2 is 45min.
Under better performance, the powder of three-dimensional hybrid described in step 3 is 1:7 with the mixing quality ratio of the wooden powder of granularity <500um.
Under better performance, the mixing time of the wooden powder of the powder of three-dimensional hybrid described in step 3 and granularity <500um is 75min.
Beneficial effect of the present invention: (1) by the introducing of high density polyethylene(HDPE) (PE), make the granule-morphology of plasticizing wooden powder, surface wettability, polarity and surface electrostatic etc. compared with pure wooden powder be improved significantly; And made easy to do being evenly attached to of the inorganic enhanced particles such as fine copper powder, nano-corundum powder, nanometer silica powder, nano oxidized bismuth meal plastify wooden powder particle surface by simple and easy two-dimensional mixing mode; Make the wooden powder of vast scale and two-dimensional mixing powder realize Homogeneous phase mixing by high-level efficiency three-dimensional hybrid mode again, thus realize the Homogeneous phase mixing of wooden powder and inorganic enhanced particles.
(2) uniform mixing method of a kind of wooden powder provided by the invention and inorganic enhanced particles, each procedure that the method technique is simple to operation, relate to, all without high-temperature and high-pressure conditions requirement, avoids inorganic enhanced particles because of oxidation, the phenomenon of final performance decomposing and then affect powder mix and goods thereof; And in procedure, all use powder body material industry conventional equipment, and without the need to adding expensive dispersion agent, binding agent, with low cost, be easy to realize scale operation and popularization.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the uniform mixing method of a kind of wooden powder and inorganic enhanced particles.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, elaborate to the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can implement to be much different from other modes described here, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
Refer to Fig. 1, the uniform mixing method of a kind of wooden powder and inorganic enhanced particles, comprises the following steps:
Step 1: the wooden powder of granularity <500um and high density polyethylene(HDPE) particle are pressed massfraction in flakes more mixing than 30% ~ 40%:60% ~ 70%, and through cooling, pulverize, plasticizing wooden powder that screening obtains granularity < 250um is for subsequent use;
Wherein, described wooden powder is the mixture of one or more that forestry three remains in thing powder, reed stalk powder, agricultural crop straw powder and agricultural shell powder; Described forestry three remains thing and comprises trees, the logging residue of bamboo, saw lumber residuum and industrial wood waste;
Preferably, described wooden powder and the mixing mark of high density polyethylene(HDPE) particle are than being 35%:65%.
This step by the introducing of high density polyethylene(HDPE) (PE), make the granule-morphology of plasticizing wooden powder, surface wettability, polarity and surface electrostatic etc. compared with pure wooden powder be improved significantly.
Step 2: by the plasticizing of step 1 gained wooden powder and inorganic enhanced particles in mass ratio 3:2 ~ 8:2 be placed in two-dimensional motion mixer and mix 30 ~ 60min, obtain even two-dimensional mixing powder;
Wherein, described inorganic enhanced particles is the mixture of one or more in the fine red copper powder of granularity < 75um, the nano-corundum powder of granularity < 300nm, nanometer silica powder, nano oxidized bismuth meal;
Preferably, described plasticizing wooden powder and inorganic enhanced particles in mass ratio 5:2 are placed in two-dimensional motion mixer and mix;
Preferably, the mixing time of described plasticizing wooden powder and inorganic enhanced particles is 45min.
This step makes easy to do being evenly attached to of the inorganic enhanced particles such as fine copper powder, nano-corundum powder, nanometer silica powder, nano oxidized bismuth meal plastify wooden powder particle surface by simple and easy two-dimensional mixing mode.
Step 3: by the wooden powder of step 2 gained two-dimensional mixing powder and granularity <500um in mass ratio 1:4 ~ 1:9 be placed in three-dimensional motion mixer and mix 60 ~ 90min, obtain required uniform three dimensional powder mix;
Preferably, described two-dimensional mixing powder and the mixing quality of the wooden powder of granularity <500um are than being 1:7;
Preferably, the mixing time of the wooden powder of described two-dimensional mixing powder and granularity <500um is 75min.
This step makes the wooden powder of vast scale and two-dimensional mixing powder realize Homogeneous phase mixing by high-level efficiency three-dimensional hybrid mode again, thus realizes the Homogeneous phase mixing of wooden powder and inorganic enhanced particles.
Each procedure that aforesaid method technique is simple to operation, relate to, all without high-temperature and high-pressure conditions requirement, avoids inorganic enhanced particles because of oxidation, the phenomenon of final performance decomposing and then affect powder mix and goods thereof; And in procedure, all use powder body material industry conventional equipment, and without the need to adding expensive dispersion agent, binding agent, with low cost, be easy to realize scale operation and popularization.
It is below specific embodiment.
Embodiment 1
Referring to Fig. 1, the uniform mixing method of a kind of wooden powder and inorganic enhanced particles, comprises the following steps:
Step 1: the forestry three of getting granularity <500um remains thing powder 600g and high density polyethylene(HDPE) particle 1400g is in flakes mixing, and through cooling, pulverize, plasticizing wooden powder that screening obtains granularity < 250um is for subsequent use; Described forestry three remains thing and comprises trees, bamboo logging residue, saw lumber residuum and industrial wood waste;
Step 2: get step 1 gained plasticizing wooden powder 600g and be placed in two-dimensional motion mixer mixing 30min with inorganic enhanced particles 400g, obtain even two-dimensional mixing powder; Described inorganic enhanced particles is the fine red copper powder of granularity < 75um;
Step 3: get step 2 gained two-dimensional mixing powder 300g and be placed in three-dimensional motion mixer mixing 60min with the wooden powder 1200g of granularity <500um, obtain required uniform three dimensional powder mix.
Embodiment 2
Referring to Fig. 1, the uniform mixing method of a kind of wooden powder and inorganic enhanced particles, comprises the following steps:
Step 1: the forestry three of getting granularity <500um remain thing powder 600g, reed stalk powder 200g, agricultural crop straw powder 200g and agricultural shell powder 200g mix after in flakes mixing with high density polyethylene(HDPE) particle 1800g, and through cooling, pulverize, the plasticizing wooden powder of screening acquisition granularity < 250um is for subsequent use;
Step 2: get step 1 gained plasticizing wooden powder 1200g and be placed in two-dimensional motion mixer mixing 60min with inorganic enhanced particles 300g, obtain even two-dimensional mixing powder; Described inorganic enhanced particles is the mixture of the fine red copper powder of granularity < 75um, the nano-corundum powder of granularity < 300nm, nanometer silica powder, nano oxidized bismuth meal;
Step 3: get step 2 gained two-dimensional mixing powder 200g and be placed in three-dimensional motion mixer mixing 90min with the wooden powder 1800g of granularity <500um, obtain required uniform three dimensional powder mix.
Embodiment 3
Referring to Fig. 1, the uniform mixing method of a kind of wooden powder and inorganic enhanced particles, comprises the following steps:
Step 1: in flakes mixing with high density polyethylene(HDPE) particle 1300g after getting reed stalk powder 300g, the agricultural crop straw powder 400g mixing of granularity <500um, and through cooling, pulverize, the plasticizing wooden powder of screening acquisition granularity < 250um is for subsequent use;
Step 2: get step 1 gained plasticizing wooden powder 500g and be placed in two-dimensional motion mixer mixing 45min with inorganic enhanced particles 200g, obtain even two-dimensional mixing powder; Described inorganic enhanced particles is the mixture of the fine red copper powder of granularity < 75um, the nano-corundum powder of granularity < 300nm;
Step 3: get step 2 gained two-dimensional mixing powder 200g and be placed in three-dimensional motion mixer mixing 75min with the wooden powder 1400g of granularity <500um, obtain required uniform three dimensional powder mix.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively in detail concrete, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a uniform mixing method for wooden powder and inorganic enhanced particles, is characterized in that comprising the following steps:
Step 1: the wooden powder of granularity <500um and high density polyethylene(HDPE) particle are pressed massfraction in flakes more mixing than 30% ~ 40%:60% ~ 70%, and through cooling, pulverize, plasticizing wooden powder that screening obtains granularity < 250um is for subsequent use;
Step 2: by the plasticizing of step 1 gained wooden powder and inorganic enhanced particles in mass ratio 3:2 ~ 8:2 be placed in two-dimensional motion mixer and mix 30 ~ 60min, obtain even two-dimensional mixing powder;
Step 3: by the wooden powder of step 2 gained two-dimensional mixing powder and granularity <500um in mass ratio 1:4 ~ 1:9 be placed in three-dimensional motion mixer and mix 60 ~ 90min, obtain required uniform three dimensional powder mix.
2. the uniform mixing method of a kind of wooden powder according to claim 1 and inorganic enhanced particles, is characterized in that: described wooden powder is the mixture of one or more that forestry three remains in thing powder, reed stalk powder, agricultural crop straw powder and agricultural shell powder; Wherein said forestry three remains thing and comprises trees, the logging residue of bamboo, saw lumber residuum and industrial wood waste.
3. the uniform mixing method of a kind of wooden powder according to claim 1 and inorganic enhanced particles, is characterized in that: the inorganic enhanced particles described in step 2 is the mixture of one or more in the fine red copper powder of granularity < 75um, the nano-corundum powder of granularity < 300nm, nanometer silica powder, nano oxidized bismuth meal.
4. any one wooden powder according to claim 1-3 and the uniform mixing method of inorganic enhanced particles, is characterized in that: wooden powder described in step 1 is 35%:65% with the mixing mark ratio of high density polyethylene(HDPE) particle.
5. the uniform mixing method of arbitrary a kind of wooden powder and inorganic enhanced particles according to claim 1-3, is characterized in that: the plasticizing wooden powder described in step 2 and inorganic enhanced particles in mass ratio 5:2 are placed in two-dimensional motion mixer and mix.
6. the uniform mixing method of arbitrary a kind of wooden powder and inorganic enhanced particles according to claim 1-3, is characterized in that: the mixing time plastifying wooden powder and inorganic enhanced particles described in step 2 is 45min.
7. the uniform mixing method of arbitrary a kind of wooden powder and inorganic enhanced particles according to claim 1-3, is characterized in that: the mixing quality of the powder of two-dimensional mixing described in step 3 and the wooden powder of granularity <500um is than being 1:7.
8. the uniform mixing method of arbitrary a kind of wooden powder and inorganic enhanced particles according to claim 1-3, it is characterized in that: the powder of two-dimensional mixing described in step 3 and granularity, the mixing time of the wooden powder of <500um is 75min.
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Cited By (3)
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| CN104875268A (en) * | 2015-04-30 | 2015-09-02 | 中南林业科技大学 | Particle reinforced wooden outdoor engineering material and production method thereof |
| CN105153727A (en) * | 2015-09-25 | 2015-12-16 | 王军 | Synthesis process of nanometer macromolecule ecological wood |
| CN105834416A (en) * | 2016-04-06 | 2016-08-10 | 中南林业科技大学 | Biomass mechanical engineering material based on fast-growing grass and preparation method thereof |
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| CN101037527A (en) * | 2007-03-29 | 2007-09-19 | 上海交通大学 | Method for preparing bakelite by using nonmetal material in waste printing circuit board |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875268A (en) * | 2015-04-30 | 2015-09-02 | 中南林业科技大学 | Particle reinforced wooden outdoor engineering material and production method thereof |
| CN105153727A (en) * | 2015-09-25 | 2015-12-16 | 王军 | Synthesis process of nanometer macromolecule ecological wood |
| CN105834416A (en) * | 2016-04-06 | 2016-08-10 | 中南林业科技大学 | Biomass mechanical engineering material based on fast-growing grass and preparation method thereof |
| CN105834416B (en) * | 2016-04-06 | 2017-09-12 | 中南林业科技大学 | A kind of biomass mechanical engineering material based on fast-growing grass and preparation method thereof |
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