CN105372162A - Method for testing granularity of glass fiber chopped strands - Google Patents
Method for testing granularity of glass fiber chopped strands Download PDFInfo
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- CN105372162A CN105372162A CN201510715839.8A CN201510715839A CN105372162A CN 105372162 A CN105372162 A CN 105372162A CN 201510715839 A CN201510715839 A CN 201510715839A CN 105372162 A CN105372162 A CN 105372162A
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title abstract description 10
- 239000003365 glass fiber Substances 0.000 title abstract description 8
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims description 42
- 239000002245 particle Substances 0.000 claims description 19
- 238000010998 test method Methods 0.000 claims description 18
- 239000011324 bead Substances 0.000 claims description 16
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 abstract 3
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 238000012956 testing procedure Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
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- General Health & Medical Sciences (AREA)
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Abstract
Provided is a method for testing the granularity of glass fiber chopped strands. The method includes the following steps that y g of glass fiber chopped strands are weighed in a testing environment with the temperature of 20-25 DEG C and the relative humidity of 40%-60% and conditioned for 0.1-1.5 h, wherein y ranges from 10 to 100; the vibrating amplitude of a vibrating screening instrument is adjusted to 0.1-3.0 mm, the vibrating time is adjusted to 1-60 min, three screens of different sizes are taken, three small balls are placed on each screen, the screens are sequentially stacked from bottom to top and placed from small to large according to the mesh size, and a plate is placed under the screen on the lowermost layer; the chopped strands are poured into the screen on the uppermost layer, and the vibrating screening instrument is started after the screen is covered with a lid; the vibrating screening instrument is stopped after the vibrating time is up, the small balls are taken out, then the chopped strands on each layer and the chopped strands in the plate are weighed, and weights are recorded; the percent of the chopped strands on each layer is calculated according to the formula that x=m/y*100%, and the overall granularity distribution of the chopped strands is evaluated according to the data. According to the method, testing time is short, testing is convenient, few personal errors exist, and testing precision is high.
Description
Technical field
the present invention relates to a kind of method of testing of fiberglas chopped strand granularity, particularly a kind of method of testing of thermoplasticity fiberglas chopped strand granularity, can be used for quantizing the granularity size of thermoplastic glass fiber's chopped strand.
Background technology
along with the progress of science and technology and the development of society, the compound substance with premium properties is more and more subject to people's attention, wherein fiber glass thermoplastics (calling GFRTP in the following text) can replace timber, iron and steel to a certain extent, be widely used in the various aspects such as industry, traffic, building, electrical equipment, in occupation of extremely important status in productive life.Because continuous high-endization in market proposes stricter requirement to GFRTP industry, domestic and international each large-engineering plastics-production business all uses fiberglas chopped strand (calling chopped strand in the following text) to carry out compound as reinforcing material and resin matrix, production engineering plastics now.The engineering plastics using chopped strand to produce as reinforcing material, have properties of product and stablize, content of glass fiber is accurate, leaks the advantages such as fine floating fine phenomenon is few.Client is when producing, chopped strand is by the side spout of extruder, feeding extruder carries out shearing dispersion and carries out compound with resin simultaneously, in this production run, the granularity of chopped strand can bring very large impact to the production efficiency of client and product quality, and granularity is too small, chopped strand filoselle is a lot, easily produce arch formation at feed screw place, side, cause compound material content of glass fiber to be forbidden, shut down; Granularity is excessive, and threaded rod shear shear force is constant, easily causes occurring glass fibre dispersion bad phenomenon in compound material, simultaneously larger to extruder wearing and tearing.
also not about the method for testing of chopped strand granularity in current industry, in the past in the production run of chopped strand, for the control of granularity, the product produced before relying on contrast keeps sample.Owing to not having means of testing, this comparison method is all completed by naked eyes, and this also makes in production run, can not quantize for these performance index of chopped strand granularity, also the granularity of product cannot be recorded in product process control simultaneously.
Summary of the invention
for overcoming above shortcoming, this application provides a kind of method can testing chopped strand granularity effective and rapidly, by this method can be effective and rapid test chopped strand granularity, ensure that the granularity size of chopped strand is unified, thus provide the chopped strand goods of high-quality for client.
it is as follows that the present invention solves the problems of the technologies described above adopted technical scheme:
a kind of fiberglas chopped strand particle size test method, comprises following step:
be 20 ~ 25 DEG C in temperature, relative humidity is under the test environment of 40% ~ 60%, uses analytical balance to weigh fiberglas chopped strand y gram (10 ~ 100g), nurses one's health 0.1 ~ 1.5 hour.
the amplitude of vibrosieve instrument is adjusted to 0.1 ~ 3.0mm, time of vibration is adjusted to 1 ~ 60min, gets the screen cloth of three different sizes, then places three beads at each screen cloth place, screen cloth is stacked by mesh size from top to bottom successively from small to large, underneath one plate of orlop screen cloth.
chopped strand is poured into the superiors' screen cloth, cover lid, Vibration on Start-up pulp classifier.
after the time of vibration arranged arrives, vibrosieve instrument stops automatically, is taken out by bead, then weighs to the chopped strand in the chopped strand of every one deck and plate, and record.
by formula x=m ÷ y × 100%, calculate the chopped strand number percent of every one deck, in formula, x is chopped strand number percent, and m is the weight of every one deck chopped strand, and evaluates according to the integral particle degree distribution of chopped strand percent data to chopped strand of every one deck.
by the particle size data of one deck every in this method of testing, we can draw the distribution of particle sizes of this batch of chopped strand.
plate of the present invention can adopt stainless steel disc.
bead of the present invention can be rubber sphere.
ground floor x value, generally all require the smaller the better, x value is larger, and illustrate that in chopped strand, bulky grain ratio wants many, the chopped strand of this kind of granularity produces compound material as reinforcing material, easily produces glass fibre dispersion bad phenomenon, simultaneously larger to extruder wearing and tearing.
second layer x value, General Requirements is moderate, and x value is excessive, chopped strand granularity is bigger than normal, for the extruder that screw rod dispersibility is strong, may can not produce scattering problem, but for the extruder that screw rod dispersibility is more weak, the client that particularly American-European, Japan and Korea S are national, then can produce scattering problem.
third layer x value, General Requirements is more bigger best, and through the service condition of client for a long time, the deployment conditions of chopped strand in screw rod of this layer is best, also can not produce cutting stock problems.
4th layer of x value, General Requirements is more few better, and this layer of chopped strand majority is filoplume, although easily disperse in screw rod, when side spout blanking, often produces the situation of feed opening being blocked, brings impact to continuous production.
in sum, in this method of testing, the numerical value of third layer x value is the bigger the better, and the x value of ground floor and the 4th layer is less, then the granularity state of this chopped strand is also better.
in this method of testing, the described preferred ambient control temperature of step (1) is 23 ~ 25 DEG C, and relative humidity is 45 ~ 55%, and preferred conditioning time is 0.8 ~ 1.0 hour, and preferably test example weight y is 50.
in this method of testing, the screen mesh size described in step (2) be preferably respectively 1.8 ~ 2.2mm, 0.8 ~ 1.2mm, 300 ~ 700 μm, preferred rubber ball is of a size of 18 ~ 20mm.Vibrosieve instrument is FRITSCH, and preferred amplitude is 0.8 ~ 1.2mm, and preferred time of vibration is 8 ~ 12min.
in this method of testing, every layer of screen cloth described in step (4) is weighed, and pays special attention to the chopped strand on screen cloth to be taken out as far as possible, does not have residual, residual weight≤0.5g.Concrete recommendation method of testing is as follows:
be 23 ~ 25 DEG C in temperature, relative humidity is under the test environment of 45% ~ 55%, uses analytical balance to weigh fiberglas chopped strand 50g, nurses one's health 0.8 ~ 1.0 hour.
open vibrosieve instrument, amplitude is adjusted to 0.8 ~ 1.2mm, time of vibration is adjusted to 8 ~ 12min, get the screen cloth of three different sizes, screen cloth preferred size be respectively 1.8 ~ 2.2mm, 0.8 ~ 1.2mm, 300 ~ 700 μm, then place three rubber sphere at each screen cloth place, the diameter of preferred rubber ball is 18 ~ 20mm, screen cloth is stacked by mesh size from top to bottom successively from small to large, underneath one plate of orlop screen cloth.
pour 50g chopped strand into the superiors screen cloth, cover lid.Press the start key of pulp classifier, start pulp classifier.
after setup times arrives, pulp classifier stops automatically, is taken out by bead, then weighs to the chopped strand in the chopped strand of every one deck and plate, and record.Pay special attention to the chopped strand on screen cloth to be taken out as far as possible, do not have residual, residual weight≤0.5g.
be chopped strand number percent by formula x=m ÷ 50 × 100%(x, m is the weight of every one deck chopped strand), calculate the chopped strand number percent of every one deck, and record data, simultaneously according to the particle size data of every one deck, the integral particle degree distribution of chopped strand is evaluated.
the key point of this method of testing is amplitude in test condition and test duration, the pore size of each screen cloth in test condition, the number of bead in every layer of screen cloth in test condition, and the diameter of bead, test example weight required in test condition, the humiture of environment and conditioning time in test condition.
the advantage of this method of testing is the particle size data that can obtain chopped strand accurately, by testing the chopped strand particle size data obtained, is recorded in product quality process control, as the Testing index that daily chopped strand is produced.By adding up the particle size data of different yarn, gather granularity standard needed for different product, for the production of chopped strand is instructed.Test duration is short, convenient test, and human error is few, and measuring accuracy is high.
Embodiment
below by specific embodiment, the invention will be further described, but protection scope of the present invention is not limited in this.
embodiment 1:
the required instrument of test: vibrosieve instrument is FRITSCH, electronic balance, beaker, hairbrush, plastic board, size is respectively 2mm, 1.0mm, three screen clothes of 500 μm, and size is at the bead 9 of 20mm.
raw material: fiberglas chopped strand: Jushi Group Co., Ltd. ECS11-4.5-560A, ECS11-03-560A, test condition: temperature 23 DEG C, humidity 50%.
testing procedure:
(1) use analytical balance to weigh fiberglas chopped strand ECS11-4.5-560A, 50g is placed in beaker, and nurses one's health 1.0 hours.
open vibrosieve instrument, amplitude is adjusted to 1.0mm, time of vibration is adjusted to 10min, gets the screen cloth of three different sizes, screen mesh size (aperture) be respectively 2.0mm, 1.0mm, 500 μm, three rubber sphere are placed again at each screen cloth place, rubber sphere is of a size of 20mm, is stacked from small to large successively from top to bottom by screen cloth by mesh size, underneath one plate (three layers of screen cloth above of orlop screen cloth, bottom one deck is plate, totally four layers).
pour the ECS11-4.5-560A chopped strand of 50g into the superiors screen cloth, cover lid.The stationary installation of pulp classifier is used to fix.Press the start key of pulp classifier, start pulp classifier.
after minute, pulp classifier stops automatically, takes off stationary installation, and is taken out by bead, is poured on plastic board by the chopped strand of every one deck, and weighs one by one.Record the weight of every one deck chopped strand.Pay special attention to the chopped strand on screen cloth to be taken out as far as possible, do not have residual, residual weight≤0.5g.
be chopped strand number percent by formula x=m ÷ 50 × 100%(x, m is the weight of every one deck chopped strand), calculate the chopped strand number percent of every one deck (to should the granularity number percent in aperture, the corresponding granularity of ground floor is greater than the granularity number percent of the superiors' screen mesh size, the corresponding granularity of the second layer is not more than the superiors' screen mesh size but is greater than the granularity number percent of second layer screen mesh size, the corresponding granularity of third layer is not more than second layer screen mesh size but is greater than the granularity number percent of third layer screen mesh size, 4th layer of corresponding granularity is not more than the granularity number percent of third layer screen mesh size, lower same) and record data.
repeat as above (1) ~ (5) step for ECS11-03-560A, concrete data are as follows:
conclusion: from particle size data, ECS11-03-560A is less than the granularity of ECS11-4.5-560A, and filoselle is slightly many.And in client's use procedure, also really having this requirement, this method of testing can show granularity difference very intuitively.
embodiment 2:
the required instrument of test: vibrosieve instrument is FRITSCH, electronic balance, beaker, hairbrush, plastic board, size is respectively 2.0mm, 1.0mm, three screen clothes of 500 μm, and size is at the bead 9 of 20mm.
raw material: fiberglas chopped strand: Jushi Group Co., Ltd. ECS11-4.5-560A, ECS13-4.5-508A test condition: temperature 23 DEG C, humidity 50%.
testing procedure:
(1) use analytical balance to weigh fiberglas chopped strand 50g and be placed in beaker, and nurse one's health 1.0 hours.
open vibrosieve instrument, amplitude is adjusted to 1.0mm, time of vibration is adjusted to 10min, get the screen cloth of three different sizes, screen mesh size be respectively 2.0mm, 1.0mm, 500 μm, then place three rubber sphere at each screen cloth place, rubber sphere is of a size of 20mm, screen cloth is stacked by mesh size from top to bottom successively from small to large, underneath one plate of orlop screen cloth.
pour 50g chopped strand into the superiors screen cloth, cover lid.Use the stationary installation of pulp classifier, device is fixed.Press the start key of pulp classifier, start pulp classifier.
after minute, pulp classifier stops automatically, takes off stationary installation, and is taken out by bead, is poured on plastic board by the chopped strand of every one deck, and weighs one by one.Record the weight of every one deck chopped strand.Pay special attention to the chopped strand on screen cloth to be taken out as far as possible, do not have residual, residual weight≤0.5g.
be chopped strand number percent by formula x=m ÷ 50 × 100%(x, m is the weight of every one deck chopped strand), calculate the chopped strand number percent of every one deck, and record data.
for ECS13-4.5-508A particle size test, repeat (1) ~ (5) step, concrete data are as follows:
conclusion: according to this way, we find that the granularity of ECS13-4.5-508A is larger than the granularity of ECS11-4.5-560A.And in client's use procedure, also really having this requirement, this method of testing can show granularity difference very intuitively.
comparative example:
the required instrument of test: vibrosieve instrument is FRITSCH, electronic balance, beaker, hairbrush, plastic board, size is respectively 2.0mm, 1.0mm, three screen clothes of 500 μm, and size is at the bead 9 of 20mm.
raw material: fiberglas chopped strand: Jushi Group Co., Ltd. ECS11-4.5-560A, ECS13-4.5-508A, test condition: temperature 23 DEG C, humidity 50%.
testing procedure:
(1) use analytical balance to weigh fiberglas chopped strand 50g and be placed in beaker, and nurse one's health 1.0 hours.
open vibrosieve instrument, amplitude is adjusted to 5.0mm, time of vibration is adjusted to 80min, get the screen cloth of three different sizes, screen mesh size be respectively 3.0mm, 2.0mm, 700 μm, then place three rubber sphere at each screen cloth place, rubber sphere is of a size of 20mm, screen cloth is stacked by mesh size from top to bottom successively from small to large, underneath one plate of orlop screen cloth.
pour 50g chopped strand into the superiors screen cloth, cover lid.Use the stationary installation of pulp classifier, device is fixed.Press the start key of pulp classifier, start pulp classifier.
after minute, pulp classifier stops automatically, takes off stationary installation, and is taken out by bead, is poured on plastic board by the chopped strand of every one deck, and weighs one by one.Record the weight of every one deck chopped strand.Pay special attention to the chopped strand on screen cloth to be taken out as far as possible, do not have residual, residual weight≤0.5g.
be chopped strand number percent by formula x=m ÷ 50 × 100%(x, m is the weight of every one deck chopped strand), calculate the chopped strand number percent of every one deck, and record data.
for ECS13-4.5-508A particle size test, repeat the concrete data of (1) ~ (5) step as follows:
conclusion: from the distribution of particle sizes data of two samples, both granularity difference is little, and the state of sample after observation test, the sample appearance particle that the state of sample has not been tested for destroyed ratio is much little.Use this method of testing can not reflect the true distribution of particle sizes of sample really, and this kind of method of testing is also comparatively strong to the destructive power of screen cloth, fragile screen cloth.
test example weight y of the present invention can between 10 ~ 100g, and the y of 50 in computing formula substitutes.
simple deformation or the equivalence of every design concept of the present invention are replaced, and should think and fall into protection scope of the present invention.
Claims (2)
1. a fiberglas chopped strand particle size test method, comprises following step:
Be 20 ~ 25 DEG C in temperature, relative humidity is under the test environment of 40% ~ 60%, weighs fiberglas chopped strand y gram, and y, between 10 ~ 100 grams, nurses one's health 0.1 ~ 1.5 hour;
The amplitude of vibrosieve instrument is adjusted to 0.1 ~ 3.0 millimeter, time of vibration is adjusted to 1 ~ 60 minute, gets the screen cloth of three different sizes, and places three beads at each screen cloth place, screen cloth is stacked by mesh size from top to bottom successively from small to large, underneath one plate of orlop screen cloth;
Chopped strand is poured into the superiors' screen cloth, Vibration on Start-up pulp classifier after cover lid;
Time of vibration arrives after vibration pulp classifier to be stopped automatically, is taken out by bead, then weighs and record to the chopped strand in the chopped strand of every one deck and plate;
By formula x=m ÷ y × 100%, calculate the chopped strand number percent of every one deck, in formula, x is chopped strand number percent, and m is the weight of every one deck chopped strand, and evaluates according to the integral particle degree distribution of chopped strand percent data to chopped strand of every one deck.
2. fiberglas chopped strand particle size test method according to claim 1, it is characterized in that: described temperature is 23 ~ 25 DEG C, relative humidity is 45 ~ 55%, conditioning time is 0.8 ~ 1.0 hour, and fiberglas chopped strand weight is 50 grams, and the amplitude of vibrosieve instrument is 0.8 ~ 1.2 millimeter, time of vibration is 8 ~ 12 minutes, three screen mesh size are respectively 1.8 ~ 2.2 millimeters, 0.8 ~ 1.2 millimeter, 300 ~ 700 microns, and bead all adopts rubber sphere, and the diameter of bead is 18 ~ 20 millimeters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510715839.8A CN105372162A (en) | 2015-10-29 | 2015-10-29 | Method for testing granularity of glass fiber chopped strands |
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| CN201510715839.8A CN105372162A (en) | 2015-10-29 | 2015-10-29 | Method for testing granularity of glass fiber chopped strands |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340764A (en) * | 2021-06-15 | 2021-09-03 | 中国林业科学研究院林产化学工业研究所 | Method for analyzing fiber fraction and fiber bundle content of plant fibers |
| CN113533120A (en) * | 2021-06-25 | 2021-10-22 | 华润水泥技术研发（广西）有限公司 | Cement paste purification and granulation quantification method |
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| CN2702300Y (en) * | 2004-05-31 | 2005-05-25 | 泰山玻璃纤维股份有限公司 | Short cut glass fiber grain fineness distribution detecting instrument |
| GB2470075A (en) * | 2009-05-08 | 2010-11-10 | Endecotts Ltd | Sieve shaker separator and weighing apparatus |
| CN102998232A (en) * | 2011-09-14 | 2013-03-27 | 刘高昌 | Method for determining particle size distribution in percentage of liquid microcapsule gel breaker |
| CN103736658A (en) * | 2013-12-20 | 2014-04-23 | 吴江市震宇缝制设备有限公司 | Checking screen |
| CN203881648U (en) * | 2014-03-28 | 2014-10-15 | 天津元达工贸有限公司 | Glass fiber particle size detecting device |
-
2015
- 2015-10-29 CN CN201510715839.8A patent/CN105372162A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2702300Y (en) * | 2004-05-31 | 2005-05-25 | 泰山玻璃纤维股份有限公司 | Short cut glass fiber grain fineness distribution detecting instrument |
| GB2470075A (en) * | 2009-05-08 | 2010-11-10 | Endecotts Ltd | Sieve shaker separator and weighing apparatus |
| CN102998232A (en) * | 2011-09-14 | 2013-03-27 | 刘高昌 | Method for determining particle size distribution in percentage of liquid microcapsule gel breaker |
| CN103736658A (en) * | 2013-12-20 | 2014-04-23 | 吴江市震宇缝制设备有限公司 | Checking screen |
| CN203881648U (en) * | 2014-03-28 | 2014-10-15 | 天津元达工贸有限公司 | Glass fiber particle size detecting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113340764A (en) * | 2021-06-15 | 2021-09-03 | 中国林业科学研究院林产化学工业研究所 | Method for analyzing fiber fraction and fiber bundle content of plant fibers |
| CN113533120A (en) * | 2021-06-25 | 2021-10-22 | 华润水泥技术研发（广西）有限公司 | Cement paste purification and granulation quantification method |
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Application publication date: 20160302 |