The content of the invention
The technical problems to be solved by the invention:It is poor for traditional bamboo slab rubber bonding strength, easy buckling deformation after use
And there is provided a kind of bamboo slab rubber and preparation method thereof the drawbacks of degumming.
In order to solve the above technical problems, the present invention is using technical scheme as described below:
A kind of bamboo slab rubber, includes the raw material of following parts by weight:
40~50 parts of phenolic resin 2124,3~5 parts of polyvinyl alcohol, 1~3 part of NPE, 20~30 parts of diluents
With 180~200 parts of filter cakes;
Described filter cake is obtained by following steps:
(1)It is with biogas slurry to soak 5~8 after the thin bamboo strips used for weaving that 10~20mm, thickness are 1.0~1.5mm that 1~2kg bamboos are split into width
My god, after immersion terminates, thin bamboo strips used for weaving is taken out and dried, obtain pre-processing thin bamboo strips used for weaving;
(2)It is 25% salpeter solution and 400~500mL mass that 200~300g is pre-processed into thin bamboo strips used for weaving, 150~200mL mass fractions
Fraction is 50% sulfuric acid solution, is filtered after reacting 3~4h at 80~90 DEG C, obtains filter residue, after filter residue is washed with water, washed
Net filter residue;
(3)After clean filter residue, 400~500mL epoxychloropropane and 10~15g hydroquinones are mixed, 1~3g catalysis is added
Agent, and filtered after 110~120 DEG C of 3~4h of reaction, obtain filter cake.
Described diluent is one or both of glycerine, ethylene glycol.
Described catalyst is in triethyl benzyl ammonia chloride, tetrabutylammonium chloride, DTAC
It is one or more of.
The preparation method of described bamboo slab rubber, specific preparation process is:
(1)Match by weight, progress takes raw material;
(2)After the stirring mixing of phenolic resin 2124, polyvinyl alcohol, NPE and diluent, phenolic aldehyde tree is obtained
Fat adhesive, phenolic resin adhesive is poured into cement dipping machine, and filter cake is placed in phenolic resin adhesive, in 4~5MPa
1~2h of lower impregnation, by the filtration cakes torrefaction after impregnation, obtains the thin bamboo strips used for weaving after impregnation;
(3)During thin bamboo strips used for weaving after impregnation is put into using steam as the hot press of thermal source, it is 75~85 DEG C to control press temperature, and pressure is
3~4MPa, suppresses 20~30min, obtains blank, blank is cooled down, obtain bamboo slab rubber.
The present invention is compared with other method, and advantageous effects are:
The present invention is first handled thin bamboo strips used for weaving with biogas slurry, through the microbial action in biogas slurry thin bamboo strips used for weaving surface can be made to form bumps not
Flat hollow, increases the physical interface that thin bamboo strips used for weaving is bonded with adhesive, is that follow-up impregnation raising adhesion strength creates conditions, then use
Mixed acid is handled thin bamboo strips used for weaving, and the free oxygen atom that mixed acid is discharged in processing procedure is combined with the carbon atom on thin bamboo strips used for weaving
Formation-C=O, and then hydroxyl, carboxyl are combined to form with the hydrogen ion in water, hydroxide ion, so as to form hydroxyl on thin bamboo strips used for weaving surface
Base and carboxyl, using carboxyl and epichlorohydrin reaction, to thin bamboo strips used for weaving surface grafting epoxide group, epoxide group is conducive to adhesive
Sprawling and permeate on thin bamboo strips used for weaving surface, and the phenolic resin in adhesive is crosslinked reaction with epoxide group, so as to strengthen
Interfacial structure, further improves the bonding strength of bamboo slab rubber.
Embodiment
It is the thin bamboo strips used for weaving that 10~20mm, thickness are 1.0~1.5mm to take 1~2kg bamboos to be split into width with knife, by thin bamboo strips used for weaving natural pond
Immersion is steeped 5~8 days, and after immersion terminates, thin bamboo strips used for weaving is taken out, is placed in baking oven, after 105~115 DEG C of dry 40~50min
It is warming up to 150~160 DEG C to continue to dry 30~40min, then naturally cools to room temperature, obtains pre-processing thin bamboo strips used for weaving, take 200~300g
Pretreatment thin bamboo strips used for weaving, 150~200mL mass fractions are 25% salpeter solution and 400~500mL mass fractions are that 50% sulfuric acid solution adds
Enter into the three-necked flask with thermometer and reflux, three-necked flask is placed in water-bath, it is 80 to control bath temperature
~90 DEG C, filter after 3~4h of stirring reaction, obtain filter residue, filter residue is washed with water to cleaning solution pH after 5.8~6.0, to obtain
Filter residue is cleaned, clean filter residue, 400~500mL epoxychloropropane and 10~15g hydroquinones are added to thermometer and returned
In the three-necked flask for flowing device, three-necked flask is placed in oil bath pan, it is 110~120 DEG C to control oil bath temperature, stirring mixing 3
After~5min, then into three-necked flask 1~3g catalyst is added, filter after 3~4h of stirring reaction, obtain filter cake, finally by weight
Number meter is measured, 40~50 parts of phenolic resin 2124,3~5 parts of polyvinyl alcohol, 1~3 part of NPE, 20~30 are taken
Part diluent and 180~200 parts of filter cakes, phenolic resin 2124, polyvinyl alcohol, NPE and diluent are added
Into beaker, stirring 15~20min of mixing obtains phenolic resin adhesive, phenolic resin adhesive is poured into cement dipping machine, and
Filter cake is placed in phenolic resin adhesive, 1~2h of impregnation under 4~5MPa, by the filter cake natural air drying 40 after impregnation~
Moved into after 50min in baking oven, 3~4h is dried at 105~110 DEG C, the thin bamboo strips used for weaving after impregnation is obtained, the thin bamboo strips used for weaving after impregnation is placed in
In using steam as the hot press of thermal source, it is 75~85 DEG C to control press temperature, and pressure is 3~4MPa, suppresses 20~30min, obtains
To blank, blank is naturally cooled into room temperature, bamboo slab rubber is obtained.Described catalyst is triethyl benzyl ammonia chloride, the tetrabutyl
One or more in ammonium chloride, DTAC.Described diluent is one kind in glycerine, ethylene glycol
Or two kinds.
Example 1
It is the thin bamboo strips used for weaving that 10mm, thickness are 1.0mm to take 1kg bamboos to be split into width with knife, and thin bamboo strips used for weaving is soaked 5 days with biogas slurry, waits to soak
After end, thin bamboo strips used for weaving is taken out, is placed in baking oven, 150 DEG C are warming up to after 105 DEG C of dry 40min and continues to dry 30min, then
Naturally cool to room temperature, obtain pre-process thin bamboo strips used for weaving, take 200g pre-process thin bamboo strips used for weaving, 150mL mass fractions be 25% salpeter solution and
400mL mass fractions are that 50% sulfuric acid solution is added in the three-necked flask with thermometer and reflux, and three-necked flask is put
In water-bath, it is filtering after 80 DEG C, stirring reaction 3h to control bath temperature, obtains filter residue, filter residue is washed with water into washing
Liquid pH be 5.8 after, obtain clean filter residue, by clean filter residue, 400mL epoxychloropropane and 10g hydroquinones be added to temperature
In the three-necked flask of degree meter and reflux, three-necked flask is placed in oil bath pan, it is 110 DEG C to control oil bath temperature, and stirring is mixed
Close after 3min, then filtering after 1g catalyst, stirring reaction 3h is added into three-necked flask, obtain filter cake, by weight finally
Meter, takes 40 parts of phenolic resin 2124,3 parts of polyvinyl alcohol, 1 part of NPE, 20 parts of diluents and 180 parts of filter cakes,
Phenolic resin 2124, polyvinyl alcohol, NPE and diluent are added in beaker, stirring mixing 15min is obtained
To phenolic resin adhesive, phenolic resin adhesive is poured into cement dipping machine, and filter cake is placed in phenolic resin adhesive,
Impregnation 1h under 4MPa, will move into baking oven after the filter cake natural air drying 40min after impregnation, 3h is dried at 105 DEG C, impregnation is obtained
Thin bamboo strips used for weaving afterwards, during the thin bamboo strips used for weaving after impregnation is placed in using steam as the hot press of thermal source, it is 75 DEG C to control press temperature, and pressure is
3MPa, suppresses 20min, obtains blank, blank is naturally cooled into room temperature, obtain bamboo slab rubber.Described catalyst is triethyl group
Benzyl ammonium chloride.Described diluent is glycerine.
Example 2
It is the thin bamboo strips used for weaving that 15mm, thickness are 1.3mm to take 2kg bamboos to be split into width with knife, and thin bamboo strips used for weaving is soaked 7 days with biogas slurry, waits to soak
After end, thin bamboo strips used for weaving is taken out, is placed in baking oven, 155 DEG C are warming up to after 110 DEG C of dry 45min and continues to dry 35min, then
Naturally cool to room temperature, obtain pre-process thin bamboo strips used for weaving, take 250g pre-process thin bamboo strips used for weaving, 180mL mass fractions be 25% salpeter solution and
450mL mass fractions are that 50% sulfuric acid solution is added in the three-necked flask with thermometer and reflux, and three-necked flask is put
In water-bath, it is filtering after 85 DEG C, stirring reaction 4h to control bath temperature, obtains filter residue, filter residue is washed with water into washing
Liquid pH be 5.9 after, obtain clean filter residue, by clean filter residue, 450mL epoxychloropropane and 13g hydroquinones be added to temperature
In the three-necked flask of degree meter and reflux, three-necked flask is placed in oil bath pan, it is 115 DEG C to control oil bath temperature, and stirring is mixed
Close after 4min, then filtering after 2g catalyst, stirring reaction 4h is added into three-necked flask, obtain filter cake, by weight finally
Meter, takes 45 parts of phenolic resin 2124,4 parts of polyvinyl alcohol, 2 parts of NPEs, 25 parts of diluents and 190 parts of filter cakes,
Phenolic resin 2124, polyvinyl alcohol, NPE and diluent are added in beaker, stirring mixing 18min is obtained
To phenolic resin adhesive, phenolic resin adhesive is poured into cement dipping machine, and filter cake is placed in phenolic resin adhesive,
Impregnation 2h under 5MPa, will move into baking oven after the filter cake natural air drying 45min after impregnation, 4h is dried at 108 DEG C, impregnation is obtained
Thin bamboo strips used for weaving afterwards, during the thin bamboo strips used for weaving after impregnation is placed in using steam as the hot press of thermal source, it is 80 DEG C to control press temperature, and pressure is
4MPa, suppresses 25min, obtains blank, blank is naturally cooled into room temperature, obtain bamboo slab rubber.Described catalyst is the tetrabutyl
Ammonium chloride.Described diluent is ethylene glycol.
Example 3
It is the thin bamboo strips used for weaving that 20mm, thickness are 1.5mm to take 2kg bamboos to be split into width with knife, and thin bamboo strips used for weaving is soaked 8 days with biogas slurry, waits to soak
After end, thin bamboo strips used for weaving is taken out, is placed in baking oven, 160 DEG C are warming up to after 115 DEG C of dry 50min and continues to dry 40min, then
Naturally cool to room temperature, obtain pre-process thin bamboo strips used for weaving, take 300g pre-process thin bamboo strips used for weaving, 200mL mass fractions be 25% salpeter solution and
500mL mass fractions are that 50% sulfuric acid solution is added in the three-necked flask with thermometer and reflux, and three-necked flask is put
In water-bath, it is filtering after 90 DEG C, stirring reaction 4h to control bath temperature, obtains filter residue, filter residue is washed with water into washing
Liquid pH be 6.0 after, obtain clean filter residue, by clean filter residue, 500mL epoxychloropropane and 15g hydroquinones be added to temperature
In the three-necked flask of degree meter and reflux, three-necked flask is placed in oil bath pan, it is 120 DEG C to control oil bath temperature, and stirring is mixed
Close after 5min, then filtering after 3g catalyst, stirring reaction 4h is added into three-necked flask, obtain filter cake, by weight finally
Meter, takes 50 parts of phenolic resin 2124,5 parts of polyvinyl alcohol, 3 parts of NPEs, 30 parts of diluents and 200 parts of filter cakes,
Phenolic resin 2124, polyvinyl alcohol, NPE and diluent are added in beaker, stirring mixing 20min is obtained
To phenolic resin adhesive, phenolic resin adhesive is poured into cement dipping machine, and filter cake is placed in phenolic resin adhesive,
Impregnation 2h under 5MPa, will move into baking oven after the filter cake natural air drying 50min after impregnation, 4h is dried at 110 DEG C, impregnation is obtained
Thin bamboo strips used for weaving afterwards, during the thin bamboo strips used for weaving after impregnation is placed in using steam as the hot press of thermal source, it is 85 DEG C to control press temperature, and pressure is
4MPa, suppresses 30min, obtains blank, blank is naturally cooled into room temperature, obtain bamboo slab rubber.Described catalyst is dodecane
Base trimethyl ammonium chloride.Described diluent is glycerine.
Reference examples:The bamboo slab rubber of Yixing City company production.
The bamboo slab rubber of bamboo slab rubber obtained by above-described embodiment and reference examples is detected, specific detection is as follows:
Bonding strength:Tested according to the product glue performance method of testing in JC/T2124-2012.
As a result as shown in Table 1.
Table one:
Detection project |
Example 1 |
Example 2 |
Example 3 |
Reference examples |
Bonding strength/MPa |
1.4 |
1.7 |
2.1 |
1.0 |
As seen from the above table, bamboo slab rubber of the present invention is difficult buckling deformation and degumming after having preferable bonding strength, use, is worth pushing away
Extensively with using.