CN105158109B - A kind of method for detecting resin insoluble matter content in bamboo composite pressure pipe inner liner - Google Patents
A kind of method for detecting resin insoluble matter content in bamboo composite pressure pipe inner liner Download PDFInfo
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- CN105158109B CN105158109B CN201510520603.9A CN201510520603A CN105158109B CN 105158109 B CN105158109 B CN 105158109B CN 201510520603 A CN201510520603 A CN 201510520603A CN 105158109 B CN105158109 B CN 105158109B
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Abstract
The invention discloses a kind of method for detecting resin insoluble matter content in bamboo composite pressure pipe inner liner, comprise the following steps：The detecting step of bamboo composite pressure pipe inner liner sample, the detecting step of blank filter paper, the detecting step of blank non-woven fabrics and blank grid cloth and the step of calculate resin insoluble matter content.Because the structure and composition of different type bamboo composite pressure pipe inner liner has differences, other compositions in inner liner in addition to resin can influence the accuracy that resin insoluble matter content is detected, detection method in the present invention inner liner is constituted in resin beyond influence of the other compositions (such as non-woven fabrics and grid cloth) to resin insoluble matter content parameter account for, on the premise of testing result accuracy is ensured, detection operation is simplified as far as possible, is easy to actual use.
Description
Technical field
The invention belongs to bamboo composite pressure pipe technical field, it is used to detect bamboo composite pressure pipe more particularly, to one kind
The method of resin insoluble matter content in inner liner.
Background technology
Bamboo wood material is reproducible green material, recently as the increasingly mature of bamboo composite pressure pipe correlation technique
(for example, Chinese patent literature CN101571213A, CN202327397U), bamboo multiple tube can bear certain pressure as one kind
Pipeline, polyvinyl chloride pipe, poly- second can be generally substituted in the occasions such as water supply and sewage work, field irrigation, petrochemical industry anti-corrosion
The conventional pipelines such as alkene pipe, glass reinforced plastic pipe, cement class pipe, spiral welded pipe, ductile iron pipe, have a good application prospect.
Bamboo composite pressure pipe, it is along caliber direction, from inside to outside including inner liner, enhancement layer and external protection coating, wherein interior
Lining is typically made on straight tube mould with resin, non-woven fabrics and grid cloth, forms the liner of antiseepage and inner wall smooth
Layer；On the other hand, can also be internal with reference to the concrete application condition (such as use environment, the medium transmitted) of bamboo composite pressure pipe
The structure and its composition of lining are modified to strengthen its performance, for example, from resistance to acids and bases resin, realizing high-corrosion medium
Transmission.
The quality of inner liner quality affects the performance of bamboo composite pressure pipe (such as hydraulic pressure, long-term hydrostatic pressing, the jelly of failing in short-term
Swollen adaptability etc.), and resin insoluble matter content is the important indicator for weighing inner liner quality.Resin insoluble matter content
Also known as curing degree, its Cleaning Principle is with soluble ingredient in the acetone extraction resin close to boiling temperature, so as to draw in resin
Insoluble matter content；Related art has also carried out relevant regulations to the test method of resin insoluble matter content, for example, being
The GB/T 2576 that specification Test method for insoluble matter content of resin used in fiber reinforced plastics is put into effect.
Although prior art has carried out concerned countries regulation to the detection method of resin insoluble matter content, utilize existing
Detection method when the resin insoluble matter content to bamboo composite pressure pipe inner liner is detected, the data drawn are often not
The performance of the inner liner can accurate, be directly embodied, the result reference significance of detection is not high.Further, since bamboo composite pressure pipe
The component of inner liner may need the application conditions with reference to bamboo composite pressure pipe to be adjusted, existing resin insoluble matter content
The result fluctuation that detection method is obtained is big, for different applicable cases, the physics meaning representated by resin insoluble matter content
Adopted difference is larger, and bigger difficulty is brought to actually detected.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, it is an object of the invention to provide the compound pressure of one kind detection bamboo
The method of resin insoluble matter content in solenoid inner liner, wherein by such as blank experiment etc. of its crucial processing step
Be improved, can effectively solve the problem that compared with prior art resin insoluble matter content can not accurately, directly embody inner liner
The problem of performance, and the result that the detection method is obtained for different liner layer components fixes, reliably, enormously simplify reality
Border detection operation.
To achieve the above object, it is proposed, according to the invention, can not there is provided resin in one kind detection bamboo composite pressure pipe inner liner
The method of molten point of content, it is characterised in that the detecting step including sample, contrasting detection step and calculating resin are insoluble
Divide content step,
Wherein, the detecting step of the sample includes：
The inner liner on a part of tube wall of bamboo composite pressure pipe is stripped as sample, the inner liner of the bamboo composite pressure pipe has
There is n1Layer non-woven fabrics and n2Layer grid cloth；The sample drying is dried, the quality that the sample is weighed after cooling is designated as m6；Then
Filter paper is taken, and weighs the quality of the filter paper and is designated as m, then the sample is encased with the filter paper, then described the examination will be housed
The filter paper of sample is put into extraction equipment, is added acetone and is extracted；Extraction takes out it after finishing in the lump, dries and does after draining
It is dry to constant weight, the filter paper equipped with the sample after then cooling extract is equipped with the sample after the weighing extraction
The gross mass of filter paper, and remember that the quality is m4；
The contrasting detection step includes the detection of blank filter paper detecting step and blank non-woven fabrics and blank grid cloth
Step,
Wherein, the blank filter paper detecting step includes：
Blank filter paper individually is taken, the blank filter paper is identical with the filter paper species in the detecting step of the sample, by this
Blank filter paper dries drying, and its quality is weighed after cooling, and it is m to remember the quality7, the blank filter paper is then put into extraction equipment
It is interior, add acetone and extracted；After extraction is finished, the blank filter paper is taken out, dries and is dried to constant weight after draining, then cooling is
Blank filter paper after being extracted, weighs the quality of the blank filter paper after the extraction, and remembers that the quality is m8；
The detecting step of the blank non-woven fabrics and blank grid cloth includes：
Individually take n1Layer blank non-woven fabrics and n2Layer blank grid cloth, the blank non-woven fabrics and the blank grid cloth
The species of species and the number of plies and non-woven fabrics in the bamboo composite pressure pipe inner liner in the detecting step of the sample and grid cloth and
The number of plies is identical；By the n1Layer blank non-woven fabrics and the n2The grid cloth drying drying of layer blank, weighs its quality after cooling, and
It is m to remember the quality1；By the n1Layer blank non-woven fabrics and n2Layer blank grid cloth is encased to be formed equipped with blank non-woven fabrics with filter paper
With the filter paper of blank grid cloth, the filter paper equipped with blank non-woven fabrics and blank grid cloth is put into extraction equipment, added
Acetone is extracted；After extraction is finished, it is taken out in the lump, dries and is dried to constant weight after draining, then cooling is extracted
The filter paper equipped with blank non-woven fabrics and blank grid cloth afterwards, takes out the blank non-woven fabrics and blank grid after extraction therein
Cloth, and the quality of the blank non-woven fabrics after the extraction and blank grid cloth is weighed, it is m to remember the quality2；
The calculating resin insoluble matter content step includes：
According to the m in the detecting step of the sample6、m、m4And the m in the contrasting detection step7、m8、m1、m2
Go out resin insoluble matter content in the bamboo composite pressure pipe inner liner.
As present invention further optimization, the sample in the detecting step of the sample is multiple, and is described
Multiple area identical samples that bamboo composite pressure pipe different parts are stripped, are to be tested under the same conditions respectively, are obtained
Multigroup m6, m and m4Data；Blank filter paper in the blank filter paper detecting step is multiple, and area is identical, is to exist respectively
Tested under the same terms, obtain multigroup m7And m8Data；In the detecting step of the blank non-woven fabrics and blank grid cloth
Blank non-woven fabrics and blank grid cloth are multigroup, and area is identical, is to be tested under the same conditions respectively, are obtained multigroup
m1And m2Data；The m for calculating resin insoluble matter content foundation in resin insoluble matter content step6、m、m4、m7、m8、m1
And m2Data are the arithmetic mean of instantaneous value of each self-corresponding multi-group data.
As present invention further optimization, the drying in the detecting step of the sample and the contrasting detection step is equal
It is to be handled 2 hours at a temperature of 75 DEG C~85 DEG C.
As present invention further optimization, the calculating resin insoluble matter content step is specifically included：
Calculate the blank filter paper mass loss rate C0The step of：
Calculate the blank non-woven fabrics and blank grid cloth mass loss rate C1The step of：
And calculate the insoluble matter content C of resin in the samplerThe step of：
Wherein, m3=m4-m(1-C0), m5=m6(1-Mr)×C1, MrFor inner liner resin content.
As present invention further optimization, the inner liner resin content MrMeet：
Wherein, n1For the number of plies of non-woven fabrics in the bamboo composite pressure pipe inner liner, n2For in the bamboo composite pressure pipe inner liner
The number of plies of grid cloth；M0For the surface density of the inner liner, M1The surface density of non-woven fabrics, M described in individual layer2The grid described in individual layer
The surface density of cloth, the M0、M1And M2Respectively described inner liner, the single-layer nonwoven and the single layer mesh cloth are at 75 DEG C
The data obtained after being dried 2 hours at~85 DEG C.
As present invention further optimization, the m6、m、m4、m7、m8、m1And m2It is accurate to 0.1mg.
As present invention further optimization, the extraction equipment is apparatus,Soxhlet's, and the extraction equipment has siphon pipe；
And when carrying out water-bath extraction, the peak of the filter paper is less than the peak of the siphon pipe；Extract is in the siphon
Reflow's cycle is 6 times~10 times per hour in pipe.
As present invention further optimization, the insoluble matter content CrNot less than 90%.
As present invention further optimization, the n in the detecting step of the blank non-woven fabrics and blank grid cloth1Layer is empty
White non-woven fabrics and n2The area all same of layer blank grid cloth, every layer of blank non-woven fabrics and the blank grid cloth.
As present invention further optimization, the m in the detecting step of the blank non-woven fabrics and blank grid cloth1
In the range of 0.8g~1.2g.
By the contemplated above technical scheme of the present invention, compared with prior art, the compound pressure of bamboo is combined due to specific
Detection method is optimized solenoid liner layer structure composition so that the resin insoluble matter content that detection is obtained can be more
The performance of inner liner is embodied directly and accurately, it is as a result reliable and stable, there is good effect to the practical operation for simplifying detection process
Really.
Due to bamboo composite pressure pipe inner liner in preparation process using having non-woven fabrics (such as bamboo fibre non-woven fabrics) and net
Ge Bu, non-woven fabrics and grid cloth can influence the final result of insoluble point of resin；Especially as non-woven fabrics number of plies n1And grid cloth
Number of plies n2When amplitude of variation is larger, the result that insoluble point of resin can also have larger fluctuation, so as to finally influence according to the tree
Judgement of the insoluble point of parameter of fat to bamboo composite pressure pipe inner liner performance.Detection method in the present invention, independent measurement nonwoven
The relevant parameter of cloth or grid cloth, makes the data of inner liner resin insoluble matter content finally given more accurate, is more conducive to
The accurate quality for judging bamboo composite pressure pipe inner liner.Further, it is contemplated that bamboo composite pressure pipe is required to bear certain
Pressure value, to ensure the total quality of bamboo composite pressure pipe, by the inner liner resin that draws of detection method of the present invention not
Solvable point content is no less than 90%；If detecting, the resin insoluble matter content value drawn is less than 90%, the bamboo composite pressure
The inner liner quality of pipe will be unable to guarantee, and the pressure of the bamboo composite pressure pipe will be impacted.Detection side in the present invention
Method, available for various types of bamboo composite pressure pipes (including bamboo coiled composite tube, bamboo sand composite pressure pipe etc.), as long as the bamboo is multiple
The inner liner of combined pressure solenoid is in preparation process using there is resin.In addition, according to the specific preparation of bamboo composite pressure pipe inner liner
Process, can be free of non-woven fabrics or grid cloth (that is, n1=0 or/and n2=0).
Before and after extractive reaction of the present invention in each step, thing to be extracted (including sample, blank filter paper, blank non-woven fabrics
With grid cloth etc.) by drying and processing, (drying is handled 2 hours preferably at a temperature of 75 DEG C~85 DEG C, and temperature range can be entered
One step is preferably 78 DEG C~82 DEG C), it is ensured that the primary condition of every part of thing to be extracted is consistent；Drying temperature is less than 100 DEG C, it is to avoid
The mechanical property of the multiple pipe inner liner of the too high destruction bamboo of temperature, causes the result inaccurate；By increasing blank non-woven fabrics and blank
Loss experiment before and after the extraction of grid cloth, and go the corresponding loss of non-woven fabrics and grid cloth in final result calculation formula
Fall so that result is more accurate.
On the other hand, the present invention is preferably by individually calculating blank non-woven fabrics (such as bamboo fibre non-woven fabrics), grid cloth quality
Loss late (certainly, can also use and pass through C0Calculate the loss late value), compared with passing through C0The mode of the loss late value is calculated (if adopting
With the mode of the calculating, then need in " detection of non-woven fabrics and grid cloth " step, include nonwoven after weighing the extraction
The quality of the filter paper of cloth and grid cloth, and remember that the quality is m ', thenWherein, m2=m1-m′×
(1-C0) by calculating, and indirectly measurement), due to using the bamboo fibre non-woven fabrics after individually weighing extraction, grid cloth
The method of quality so that the result of final resin insoluble matter content is more accurate.Filter paper in the present invention in step (2.1)
It is identical with the filter paper species in step (1)；Filter paper in step (2.2) can be identical with the filter paper species in step (1) or not
Together.
In addition, preferred definition of the present invention inner liner resin content MrComputational methods, MrEmbody resin in inner liner
Proportion, for different types of bamboo composite pressure pipe, because the composition of inner liner may change, MrIn parameter can be reduced
The influence of other compositions in lining in addition to resin, so as to accurately determine the content of insoluble point of inner liner resin.Certainly,
On the premise of different type bamboo composite pressure pipe liner layer structure difference is little, M also can be directly providedrValue (for example, Mr
Can be the constant value for being not more than 1 such as 1,0.8), simplify the calculating of insoluble point of resin.
Brief description of the drawings
Fig. 1 is the flow signal of resin insoluble matter content method in detection bamboo composite pressure pipe inner liner in the present invention
Figure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
Embodiment 1
Fig. 1 show the schematic flow sheet of resin insoluble matter content method in detection bamboo composite pressure pipe inner liner.
It is the pipe that one section of long 50mm is intercepted on the bamboo composite pressure pipe that 800mm, pressure rating are 0.8MPa in nominal diameter
Ring, then intercept arc length for 50mm sample (in order that experimental result can more embody the overall performance of bamboo composite pressure pipe, can be
The sample that arc length is 50mm is intercepted on three different parts of the pipe ring respectively, makees the arithmetic mean of instantaneous value of result after detecting respectively
For final conclusion), inner liner is carefully stripped as sample with blade on above-mentioned 50mm × 50mm sample.Clip is used to respectively
Make the bamboo fibre non-woven fabrics and grid cloth of the inner liner, length × wide (L × B) of every block of bamboo fibre non-woven fabrics and grid cloth is not
Less than 200mm × 150mm, and record the long L of bamboo fibre non-woven fabrics size1, width B1, the long L of grid cloth size2, width B2。
Then, inner liner, bamboo fibre non-woven fabrics and grid cloth are put into 80 DEG C ± 2 DEG C of convection oven 2 hours, taken out
After put it into room temperature be cooled in drier, weighed with assay balance.Record the weight W of inner liner1, bamboo fibre non-woven fabrics
Weight W2, grid cloth weight W3, it is accurate to 0.1mg.
The mass M of difference unit of account area bamboo fibre non-woven fabrics1(g/m2) and unit area grid cloth mass M2(g/
m2)：
To make result accurate, the different bamboo fibre non-woven fabrics of three groups of areas and grid cloth is taken to be dried jointly in the present embodiment
Weighed after dry, dry, M is calculated respectively by above formula1、M2, its arithmetic mean of instantaneous value is taken as the bamboo fibre non-woven fabrics and the list of grid cloth
Position area quality, specific test data is as follows：
Its arithmetic mean of instantaneous value is taken to draw：M1=38.05g/m2, M2=57.81g/m2, then inner liner resin content Mr：
N in formula1For the number of plies of bamboo fibre non-woven fabrics in inner liner；n2For the number of plies of grid cloth in inner liner.The present embodiment
Middle n1=3, n2=3.Above formula isVariation, wherein M0For the face of inner liner
Density.
Three groups of sampling test data are specific as follows：
| W1(mg) | Mr | |
| Sample 1 | 5563.1 | 87.08% |
| Sample 2 | 5567.5 | 87.09% |
| Sample 3 | 5559.4 | 87.07% |
Its arithmetic mean of instantaneous value is taken as the value of the bamboo composite pressure pipe inner liner resin content：Mr=87.08%.
The present embodiment 1 is carried out by GB/T 2576 regulation substantially, but should add the raw material for doing a making inner liner
The blank assay of (bamboo fibre non-woven fabrics and grid cloth), its specific practice is as follows：
By nominal diameter for 800mm, pressure rating the n for needed for 0.8MPa bamboo composite pressure pipe corresponding liner1=3 layers
Bamboo fibre non-woven fabrics, n2=3 layers of grid cloth are put into 80 DEG C ± 2 DEG C of convection oven 2 hours, and drier is put it into after taking-up
Room temperature is inside cooled to, the bamboo fibre non-woven fabrics and grid cloth are merged, with assay balance weighing 1g ± 0.2g, record weight
Amount, is accurate to 0.1mg, it is ensured that the area of every layer of cloth is the same.
Blank bamboo fibre non-woven fabrics, grid cloth mass loss rate C1：
C1=(m1-m2)/m1× 100%,
In formula, m1For quality before blank bamboo fibre non-woven fabrics, grid cloth extraction, unit is milligram (mg)；m2It is fine for blank bamboo
Quality after non-woven fabrics, grid cloth extraction is tieed up, unit is milligram (mg)；To make result accurate, three groups of bamboo fibres are taken in the present embodiment
Non-woven fabrics and grid cloth are tested, and are taken the arithmetic mean of instantaneous value of three groups of data as final test results afterwards, are specifically tested number
According to as follows：
| Sequence number | m1(mg) | m2(mg) | C1 |
| 1 | 978.6 | 978.3 | 0.030% |
| 2 | 1024.8 | 1024.5 | 0.029% |
| 3 | 1184.5 | 1184.1 | 0.033% |
The arithmetic mean of instantaneous value of its loss late is 0.03%, the i.e. mass loss rate of the blank bamboo fibre non-woven fabrics and grid cloth
For 0.031%.
Sample mass m after extraction3：
m3=m4-m(1-C0),
In formula, m3For sample mass after extraction, unit is milligram (mg)；m4For filtration paper cylinder after extraction or filter paper bag and excess
Gross mass, unit is milligram (mg)；M is dress sample filtration paper cylinder (including absorbent cotton) or filter paper bag quality before extraction, and unit is milligram
(mg)；C0For blank filter paper mass loss rate；
Bamboo fibre non-woven fabrics, grid cloth mass loss m5：
m5=m6(1-Mr)×C1,
In formula, m5For bamboo fibre non-woven fabrics, grid cloth mass loss, unit is milligram (mg)；m6For sample matter before extraction
Amount, unit is milligram (mg)；MrFor inner liner resin content, C1For blank bamboo fibre non-woven fabrics, grid cloth mass loss rate；
Inner liner resin insoluble matter content Cr：
In formula, CrFor inner liner resin insoluble matter content；m6For sample mass before extraction, unit is milligram (mg)；m3For
Sample mass after extraction, unit is milligram (mg)；m5For bamboo fibre non-woven fabrics, grid cloth mass loss, unit is milligram (mg)；
MrFor inner liner resin content.
According to formulaCalculate blank filter paper loss late, wherein m7Before blank filter paper extraction
Quality, m8Quality after being extracted for blank filter paper, specific test data is as follows：
| Sequence number | m7(mg) | m8(mg) | C0 |
| 1 | 1381.6 | 1352.4 | 2.113% |
| 2 | 1380.2 | 1352.6 | 2.000% |
| 3 | 1381.0 | 1353.4 | 2.000% |
The arithmetic mean of instantaneous value of its loss late is that the mass loss rate of 2.038%, the i.e. blank filter paper is 2.038%.
It is three 50mm* intercepted before the bamboo composite pressure pipe that 800mm, pressure rating are 0.8MPa to the nominal diameter
50mm sample carries out extraction test, and specific test data is as follows：
| m(mg) | m4(mg) | m3(mg) | m6(mg) | m5(mg) | Cr | |
| Sample 1 | 1381.6 | 6458.9 | 5105.5 | 5563.1 | 0.2 | 90.56% |
| Sample 2 | 1380.2 | 6457.3 | 5105.2 | 5567.5 | 0.2 | 90.47% |
| Sample 3 | 1381.0 | 6458.1 | 5105.2 | 5559.4 | 0.2 | 90.62% |
It is 90.55% to take its arithmetic mean of instantaneous value, i.e. the insoluble matter content of the bamboo composite pressure pipe inner liner resin is
90.55%, more than 90%, meet the requirements.
Unspecified place is prior art in above-described embodiment, may refer to such as GB/T2576.Although root
According to the application conditions of bamboo composite pressure pipe, the requirement of the insoluble matter content of resin can change in inner liner, but general bamboo
The insoluble matter content of resin should be not less than 90% in composite pressure pipe inner liner.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (9)
1. a kind of method for detecting resin insoluble matter content in bamboo composite pressure pipe inner liner, it is characterised in that including sample
Detecting step, contrasting detection step and calculate resin insoluble matter content step,
Wherein, the detecting step of the sample includes：
The inner liner on a part of tube wall of bamboo composite pressure pipe is stripped as sample, the inner liner of the bamboo composite pressure pipe has n1
Layer non-woven fabrics and n2Layer grid cloth；The sample drying is dried, the quality that the sample is weighed after cooling is designated as m6；Then filter is taken
Paper, and weigh the quality of the filter paper and be designated as m, then encase the sample with the filter paper, then by described equipped with the sample
Filter paper is put into extraction equipment, is added acetone and is extracted；Extraction takes out it after finishing in the lump, dries and is dried extremely after draining
Constant weight, the filter paper equipped with the sample after then cooling is extracted weighs the filter paper equipped with the sample after the extraction
Gross mass, and remember the quality be m4；
The contrasting detection step includes the detection step of blank filter paper detecting step and blank non-woven fabrics and blank grid cloth
Suddenly,
Wherein, the blank filter paper detecting step includes：
Blank filter paper individually is taken, the blank filter paper is identical with the filter paper species in the detecting step of the sample, by the blank
Filter paper dries drying, and its quality is weighed after cooling, and it is m to remember the quality7, then the blank filter paper is put into extraction equipment, plus
Enter acetone to be extracted；After extraction is finished, the blank filter paper is taken out, dries and is dried to constant weight after draining, then cooling is obtained
Blank filter paper after extraction, weighs the quality of the blank filter paper after the extraction, and remembers that the quality is m8；
The detecting step of the blank non-woven fabrics and blank grid cloth includes：
Individually take n1Layer blank non-woven fabrics and n2The species of layer blank grid cloth, the blank non-woven fabrics and the blank grid cloth
With the species and the number of plies of non-woven fabrics and grid cloth in the bamboo composite pressure pipe inner liner in the detecting step of the number of plies and the sample
It is identical；By the n1Layer blank non-woven fabrics and the n2The grid cloth drying drying of layer blank, weighs its quality after cooling, and note should
Quality is m1；By the n1Layer blank non-woven fabrics and n2Layer blank grid cloth is encased to be formed equipped with blank non-woven fabrics and sky with filter paper
The filter paper of white grid cloth, the filter paper equipped with blank non-woven fabrics and blank grid cloth is put into extraction equipment, acetone is added
Extracted；After extraction is finished, it is taken out in the lump, dries and is dried to constant weight, after then cooling is extracted after draining
Filter paper equipped with blank non-woven fabrics and blank grid cloth, takes out the blank non-woven fabrics and blank grid cloth after extraction therein, and
The quality of the blank non-woven fabrics after the extraction and blank grid cloth is weighed, it is m to remember the quality2；
The calculating resin insoluble matter content step includes：
According to the m in the detecting step of the sample6、m、m4And the m in the contrasting detection step7、m8、m1、m2Draw this
Resin insoluble matter content in bamboo composite pressure pipe inner liner；
The calculating resin insoluble matter content step is specifically included：
Calculate the blank filter paper mass loss rate C0The step of：
<mrow>
<msub>
<mi>C</mi>
<mn>0</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>m</mi>
<mn>7</mn>
</msub>
<mo>-</mo>
<msub>
<mi>m</mi>
<mn>8</mn>
</msub>
</mrow>
<msub>
<mi>m</mi>
<mn>7</mn>
</msub>
</mfrac>
<mo>&times;</mo>
<mn>100</mn>
<mi>%</mi>
<mo>;</mo>
</mrow>
Calculate the blank non-woven fabrics and blank grid cloth mass loss rate C1The step of：
<mrow>
<msub>
<mi>C</mi>
<mn>1</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>m</mi>
<mn>1</mn>
</msub>
<mo>-</mo>
<msub>
<mi>m</mi>
<mn>2</mn>
</msub>
</mrow>
<msub>
<mi>m</mi>
<mn>1</mn>
</msub>
</mfrac>
<mo>&times;</mo>
<mn>100</mn>
<mi>%</mi>
<mo>;</mo>
</mrow>
And calculate the insoluble matter content C of resin in the samplerThe step of：
<mrow>
<msub>
<mi>C</mi>
<mi>r</mi>
</msub>
<mo>=</mo>
<mo>&lsqb;</mo>
<mn>1</mn>
<mo>-</mo>
<mfrac>
<mrow>
<msub>
<mi>m</mi>
<mn>6</mn>
</msub>
<mo>-</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>m</mi>
<mn>3</mn>
</msub>
<mo>+</mo>
<msub>
<mi>m</mi>
<mn>5</mn>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>m</mi>
<mn>6</mn>
</msub>
<mo>&times;</mo>
<msub>
<mi>M</mi>
<mi>r</mi>
</msub>
</mrow>
</mfrac>
<mo>&rsqb;</mo>
<mo>&times;</mo>
<mn>100</mn>
<mi>%</mi>
<mo>,</mo>
</mrow>
1
Wherein, m3=m4-m(1-C0), m5=m6(1-Mr)×C1, MrFor inner liner resin content.
2. detecting the method for resin insoluble matter content in bamboo composite pressure pipe inner liner as claimed in claim 1, its feature exists
In, sample in the detecting step of the sample is multiple, and be the bamboo composite pressure pipe different parts strip it is many
Individual area identical sample, is to be tested under the same conditions respectively, obtains multigroup m6, m and m4Data；The blank filter paper
Blank filter paper in detecting step is multiple, and area is identical, is to be tested under the same conditions respectively, obtains multigroup m7
And m8Data；Blank non-woven fabrics and blank grid cloth in the detecting step of the blank non-woven fabrics and blank grid cloth are many
Group, and area is identical, is to be tested under the same conditions respectively, obtains multigroup m1And m2Data；The calculating resin can not
The m of resin insoluble matter content foundation in molten point of content step6、m、m4、m7、m8、m1And m2Data are each self-corresponding multigroup
The arithmetic mean of instantaneous value of data.
3. detecting the method for resin insoluble matter content in bamboo composite pressure pipe inner liner as claimed in claim 1, its feature exists
In the drying in the detecting step of the sample and the contrasting detection step is to handle 2 at a temperature of 75 DEG C~85 DEG C
Hour.
4. detecting the method for resin insoluble matter content in bamboo composite pressure pipe inner liner as claimed in claim 1, its feature exists
In the inner liner resin content MrMeet：
<mrow>
<msub>
<mi>M</mi>
<mi>r</mi>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>M</mi>
<mn>0</mn>
</msub>
<mo>-</mo>
<mrow>
<mo>(</mo>
<msub>
<mi>n</mi>
<mn>1</mn>
</msub>
<mo>&times;</mo>
<msub>
<mi>M</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>n</mi>
<mn>2</mn>
</msub>
<mo>&times;</mo>
<msub>
<mi>M</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
</mrow>
<msub>
<mi>M</mi>
<mn>0</mn>
</msub>
</mfrac>
<mo>,</mo>
</mrow>
Wherein, n1For the number of plies of non-woven fabrics in the bamboo composite pressure pipe inner liner, n2For grid in the bamboo composite pressure pipe inner liner
The number of plies of cloth；M0For the surface density of the inner liner, M1The surface density of non-woven fabrics, M described in individual layer2The grid cloth described in individual layer
Surface density, the M0、M1And M2Respectively described inner liner, the single-layer nonwoven and the single layer mesh cloth are 75 DEG C~85
The data obtained after being dried 2 hours at DEG C.
5. detecting the method for resin insoluble matter content in bamboo composite pressure pipe inner liner as claimed in claim 1, its feature exists
In the m6、m、m4、m7、m8、m1And m2It is accurate to 0.1mg.
6. detecting the method for resin insoluble matter content in bamboo composite pressure pipe inner liner as claimed in claim 1, its feature exists
In the extraction equipment is apparatus,Soxhlet's, and the extraction equipment has siphon pipe；And when carrying out water-bath extraction, the filter
The peak of paper is less than the peak of the siphon pipe；Reflow's cycle is 6 times~10 to extract per hour in the siphon pipe
It is secondary.
7. detecting the method for resin insoluble matter content in bamboo composite pressure pipe inner liner as claimed in claim 1, its feature exists
In the insoluble matter content CrNot less than 90%.
8. detecting the method for resin insoluble matter content in bamboo composite pressure pipe inner liner as claimed in claim 1, its feature exists
In the n in the detecting step of the blank non-woven fabrics and blank grid cloth1Layer blank non-woven fabrics and n2Layer blank grid cloth, every layer
The area all same of the blank non-woven fabrics and the blank grid cloth.
9. the side of resin insoluble matter content in bamboo composite pressure pipe inner liner is detected as described in claim 1-8 any one
Method, it is characterised in that the m in the detecting step of the blank non-woven fabrics and blank grid cloth1In the range of 0.8g~1.2g.
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