CN112143458A - Aldehyde-free adhesive for bamboo summer sleeping mat and preparation method thereof - Google Patents
Aldehyde-free adhesive for bamboo summer sleeping mat and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J191/00—Adhesives based on oils, fats or waxes; Adhesives based on derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses an aldehyde-free adhesive for a bamboo mat and a preparation method thereof, and relates to the technical field of adhesives. The invention discloses a formaldehyde-free adhesive for bamboo summer sleeping mat, which comprises grease extract, urea, Chinese herbal medicine extract, a cross-linking agent and water. The formaldehyde-free adhesive for the bamboo mat does not release formaldehyde at all, and meanwhile, the preparation method is simple and easy to operate, the raw materials are easy to obtain, the cost is low, the formaldehyde-free adhesive has excellent water resistance, the curing rate is high, and the service life is long; the bamboo mat has herbal fragrance due to the addition of the Chinese herbal medicine extract, can improve the sleep quality of people, and has the effects of helping sleep and repelling mosquitoes.
Description
Technical Field
The invention belongs to the technical field of adhesives, and particularly relates to an aldehyde-free adhesive applied to a bamboo mat and a preparation method thereof.
Background
The bamboo mat (commonly called mahjong mat) is a new product which breaks through the traditional mat production method and is developed and marketed in the early 90 th century, can be folded into blocks and also rolled into a cylinder shape, provides a great deal of convenience for collection, carrying and storage, and is popular with consumers all the time. The production process includes the steps of processing bamboo into small bamboo blocks, polishing, protecting, etc. and weaving with high toughness plastic rope as warp and small ox muscle as weft. At present, the bamboo mat industry has become a special bright spot of the traditional processing industry in China, the annual output of the bamboo mat industry is about 2.5 hundred million square meters, and 60 percent of the bamboo mat industry is sold in Japan, Vietnam, Korea, Thailand, Singapore and other countries.
However, in recent years, along with the improvement of awareness of people on health and environmental protection, the concern of household products on formaldehyde causes the problem that the formaldehyde of the bamboo mat exceeds the standard to gradually attract attention. Particularly, in the process of carrying out spot inspection on supermarket bamboo summer sleeping mat products by industrial and commercial enterprises in every country in 2013, the problem that the content of formaldehyde in the bamboo summer sleeping mat is a technical bottleneck in the production of the bamboo summer sleeping mat after the relevant results are exposed at the centre is found, wherein the formaldehyde content of the bamboo summer sleeping mat is approximately 80% of the formaldehyde content. According to investigation, 90% of free formaldehyde existing in the bamboo mat comes from adhesives, and the most commonly used adhesives are 'three-aldehyde adhesives', namely urea-formaldehyde adhesive (UF), phenol-formaldehyde adhesive (PF) and melamine-formaldehyde adhesive (MF), and the release of formaldehyde in the adhesives can not only harm human health, but also cause great pollution to indoor environment. Therefore, the adhesive is a technical breakthrough for solving the problem that the content of formaldehyde in the bamboo mat exceeds the standard, and the selection and improvement of the adhesive for the bamboo mat become a necessary and necessary technical bottleneck for the bamboo industry.
At present, the formaldehyde-free adhesive used in household products mainly comprises soybean protein glue, starch-based glue, isocyanate glue and thermoplastic resin glue, wherein the starch-based glue and the soybean protein glue have the advantages of low price, environmental friendliness and the like, but have the defects of poor water resistance, poor stability and low bonding strength; the thermoplastic resin adhesive has the advantages of high curing speed, low price, strong bonding force and the like, but has the defect of poor heat resistance and water resistance; the isocyanate adhesive has the advantages of high bonding strength, good water resistance, high curing rate and the like, but has high production cost, complex process and short working life, so that the application of the isocyanate adhesive in the bamboo mat industry is limited. The formaldehyde-free adhesives have respective advantages and disadvantages, so that modification research on the formaldehyde-free adhesives becomes the key point of research in the field of bamboo mat adhesives, has a better development prospect, and accords with the development trend of no hydroformylation of the adhesives.
The Chinese invention patent CN105331302A discloses a method for producing a starch-based formaldehyde-free adhesive for bamboo summer sleeping mat, which is prepared by using corn starch latex and glutinous rice starch latex as main materials, using a coupling agent as an organic silicon coupling agent and styrene-acrylic latex as a reinforcing agent and carrying out grafting and crosslinking reaction on the corn starch latex and the glutinous rice starch latex. However, the formaldehyde-free adhesive has the defects of short adaptation period, slow curing speed, slow drying speed and poor heat resistance, which is also a problem to be solved in the development process of the formaldehyde-free adhesive. The Chinese invention patent CN109181585B discloses a lignin-based aldehyde-free adhesive and a preparation method thereof, the aldehyde-free adhesive is prepared by taking polyvinyl alcohol and lignin as raw materials and glutaraldehyde as a cross-linking agent, and is simple and easy to operate, low in cost, high in bonding strength and free of free formaldehyde. However, the water resistance and stability of the aldehyde-free adhesive are poor.
Disclosure of Invention
The invention aims to provide an aldehyde-free adhesive applied to a bamboo mat, which does not release formaldehyde at all, and meanwhile, the preparation method is simple and easy to operate, the raw materials are easy to obtain, the cost is low, the waterproof performance is excellent, and the curing speed is high; the bamboo mat has good bonding performance, can not be degummed, and has long service life; the bamboo mat has herbal fragrance due to the addition of the Chinese herbal medicine extract, can improve the sleep quality of people, and has the effects of helping sleep and repelling mosquitoes.
In order to realize the purpose of the invention, the invention provides an aldehyde-free adhesive for a bamboo mat, which is prepared from the following raw materials in parts by weight: 40-60 parts of grease extract, 25-45 parts of urea, 5-10 parts of Chinese herbal medicine extract, 2.4-3.0 parts of cross-linking agent and 20-30 parts of water.
Further, the oil extract is prepared by the following method:
s1: firstly, coarsely filtering the kitchen waste to remove impurities in the kitchen waste and leave oily liquid, and then heating the oily liquid to 100-110 ℃ until no gas is evaporated;
s2: adding dilute hydrochloric acid into the obtained oily liquid without moisture while stirring, stirring for 30min after the dilute hydrochloric acid is added, then adding ammonia water, stopping adding the ammonia water when the pH is adjusted to 6-7, and continuing stirring to obtain an oily substance;
s3: adding active carbon and zeolite into the oily matter, heating to 80-100 deg.C, stirring thoroughly for 0.5-1h, and filtering to obtain the desired oil extract.
Further, the mass ratio of the moisture-free oily liquid to the dilute hydrochloric acid in the step S2 is 1: 1.
further, the mass ratio of the oil, the activated carbon and the zeolite in the step S3 is (9-12): 1: 1.
further, the Chinese herbal medicine extract is effective components of caulis polygoni multiflori, folium artemisiae argyi, kujian peel, orange peel and desmodium, and the mass ratio of the effective components of the caulis polygoni multiflori, the folium artemisiae argyi, the kujian peel, the desmodium and the orange peel is 1: 1: 1: 1: 5.
further, the crosslinking agent is one or more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, phenyl monoisocyanate and hexamethylene diisocyanate.
The preparation method of the formaldehyde-free adhesive for the bamboo summer sleeping mat comprises the following steps:
p1: weighing the grease extract and urea according to the parts by weight, adding the grease extract and urea into water, uniformly stirring, adding polyphosphate, heating to the temperature of 120 ℃ and 140 ℃ while stirring, and reacting for 2-3h to obtain a fatty acid ester prepolymer; the mass ratio of the polyphosphate ester to the urea is 1: (4-5);
p2: cooling the temperature of the fatty acid ester prepolymer to 60-80 ℃, then adding the cross-linking agent and the Chinese herbal medicine extract in parts by weight, then adding azodiisobutyronitrile, stirring for 1-2 hours at the temperature, and cooling to obtain the aldehyde-free adhesive for the bamboo mat; the mass ratio of the azodiisobutyronitrile to the crosslinking agent is 1: (1.5-2.8).
The application of the aldehyde-free adhesive prepared as described above in the bamboo summer sleeping mat comprises the following use processes: coating 0.05-0.1mm of bamboo mat blank on one surface of the bamboo mat blank with formaldehyde-free adhesive, adhering the bamboo mat blank to a base fabric, and then placing the bamboo mat blank in a hot press, wherein the temperature of the hot press is 100 plus one of 120 ℃, the pressure is 0.3-0.5MPa, and the hot pressing time is 10-15 s.
The invention achieves the following beneficial effects:
1. the aldehyde-free adhesive disclosed by the invention takes oil and fat extracts and urea as main raw materials. The grease extractant is derived from kitchen waste and has wide sources, while domestic kitchen waste is mainly used for producing diesel oil and is used for replacing mineral fuel oil, but the treatment method is troublesome, has multiple steps and needs certain technical requirements, and certain technical basis is necessary for treating the kitchen waste. The grease extract is prepared by adopting a simple treatment process, namely, the mixture of fatty acid, glycerin, aldehyde and the like is prepared by the processes of impurity removal, water removal, acidolysis, neutralization, deodorization and color removal. The urea is also called carbamide and is a cheap organic nitrogen fertilizer, so the invention adopts grease extract and urea as main raw materials, has easily obtained raw materials and low cost, can utilize wastes and reduce environmental pollution.
2. The fatty acid, the glycerol, the organic aldehyde and other substances in the oil extract react with urea under the action of a catalyst which is polyphosphate to generate a prepolymer which takes fatty acid ester as a main organic matter, and after an isocyanate crosslinking agent, a Chinese herbal medicine extract and an initiator azodiisobutyronitrile are added, ester bonds are subjected to crosslinking reaction with isocyanate and protein, sugar and the like in the Chinese herbal medicine extract under the action of the initiator to enable raw material macromolecules to be mutually associated to form the aldehyde-free adhesive with a multidimensional space network structure, so that the bonding strength of the adhesive is enhanced, and the bonding property between the adhesive and the bamboo mat is improved.
3. The cross-linking agent is isocyanate, the isocyanate has higher activity and is easy to react with the surface of the bamboo mat to form a chemical bond so as to achieve adhesive bonding, and the isocyanate is easy to react with ester groups, aldehyde groups, alcohol groups, water and the like, so that the cross-linking agent adopts a small amount of isocyanate to perform cross-linking reaction with other components, reduces the activity of the isocyanate, and improves the storage stability of the aldehyde-free adhesive. When the adhesive is bonded with the bamboo mat at high temperature and high pressure, active groups in isocyanate are easy to react with moisture in the bamboo mat to form strong hydrogen bond action and van der Waals force, so that the bonding action between the adhesive and the bamboo mat is enhanced, and the service life of the aldehyde-free adhesive is prolonged. In the invention, only a small amount of isocyanate is used, so the cost is lower.
4. The aldehyde-free adhesive contains hydrophobic halogen atoms and ester groups, a complex spatial three-dimensional structure is formed among the components through a crosslinking effect, and an active group in isocyanate is easy to react with water, so that the aldehyde-free adhesive has excellent water resistance.
5. The bamboo mat is characterized in that Chinese herbal medicine extracts are added, wherein vine of multiflower knotweed is used for calming the heart and tranquilizing the mind, folium artemisiae argyi is used for warming the channel and stopping bleeding, kujian peel is used for expelling parasites, lysimachia christinae is used for clearing away heat and toxic materials, and orange peel is used for regulating qi and tonifying the spleen and has faint scent.
6. The raw materials of the invention are completely formaldehyde, which avoids the release problem of formaldehyde and is a real environment-friendly formaldehyde-free adhesive. Meanwhile, the raw materials are easy to obtain and cheap, the operation is simple, and industrial production can be carried out; the curing rate is high in the gluing process, and the water-resistant adhesive has excellent water resistance, binding power and gluing strength, and has good economic value and social value.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The formaldehyde-free adhesive for bamboo summer sleeping mat and the preparation method thereof according to the present invention will be described with reference to the following specific examples.
The preparation method of the caulis polygoni multiflori extract comprises the following steps: drying caulis Polygoni Multiflori, pulverizing, sieving with 100 mesh sieve, extracting with 60% ethanol at 45 deg.C twice for 18 hr each time, the mass ratio of ethanol to caulis Polygoni Multiflori is 10:1, filtering, and mixing filtrates to obtain first extract of caulis Polygoni Multiflori; separating and purifying the first extract of caulis Polygoni Multiflori with macroporous resin adsorption column to obtain a second extract of caulis Polygoni Multiflori; refining the second extract of caulis Polygoni Multiflori with silica gel column to obtain caulis Polygoni Multiflori extract.
The preparation method of the folium artemisiae argyi extract comprises the following steps: cleaning folium Artemisiae Argyi, adding vinegar 30% of folium Artemisiae Argyi weight, parching at 200 deg.C for 30min, drying, pulverizing, adding 40% ethanol solution into the pulverized material at a mass ratio of 1:8, extracting under reflux for 4 hr, filtering, and concentrating the filtrate to obtain folium Artemisiae Argyi extract.
Method for preparing kujian bark extract: cleaning cortex Meliae, drying, grinding, placing cortex Meliae powder in round bottom flask, adding mixture of ethanol and water, connecting with Soxhlet extractor, soaking for 16 hr, placing Soxhlet extractor in microwave reactor, adjusting microwave radiation power and microwave action time, reflux-extracting for 4 times to obtain extractive solution, filtering, decolorizing, and concentrating under reduced pressure to obtain cortex Meliae extract.
The preparation method of the desmodium extract comprises the following steps: cleaning herba Lysimachiae Christinae, drying, pulverizing, reflux-extracting with 60% ethanol solution, concentrating the extractive solution, filtering or centrifuging, separating the filtrate or supernatant with macroporous resin, sequentially eluting with water, 20% ethanol and 60% ethanol, collecting 20-60% ethanol eluate, and evaporating under reduced pressure to obtain herba Lysimachiae Christinae extract.
The preparation method of the orange peel extract comprises the following steps: the tangerine peel extract is extracted by adopting a preparation method of a tangerine extract and a preparation method in application thereof, which are the Chinese invention CN 201610859549.5.
The method for preparing the herbal extracts of the present invention is not limited to the above method, but may be commercially available or prepared by a method commonly used in the art.
Example 1: aldehyde-free adhesive for bamboo mat
The preparation method of the formaldehyde-free adhesive for the bamboo summer sleeping mat comprises the following steps:
p1: weighing 40 parts of oil extract and 45 parts of urea, adding the oil extract and the urea into 20 parts of water, uniformly stirring, adding polyphosphate, heating to the temperature of 120-140 ℃ while stirring, and reacting for 2-3 hours to obtain the fatty acid ester prepolymer. Wherein the mass ratio of the polyphosphate ester to the urea is 1: 4.
p2: and (3) cooling the temperature of the fatty acid ester prepolymer to 60-80 ℃, then adding 3 parts of toluene diisocyanate and 10 parts of Chinese herbal medicine extract, then adding azobisisobutyronitrile, stirring for 1-2h at 60-80 ℃, and cooling to obtain the aldehyde-free adhesive for the bamboo mat. Wherein the mass ratio of the azodiisobutyronitrile to the toluene diisocyanate is 1: 1.5. the Chinese herbal medicine extract is effective components of caulis polygoni multiflori, folium artemisiae argyi, kujian peel, orange peel and desmodium, and the mass ratio of the effective components of the caulis polygoni multiflori, the folium artemisiae argyi, the kujian peel, the desmodium and the orange peel is 1: 1: 1: 1: 5.
the grease extract is prepared by the following method:
s1: firstly, the kitchen waste is roughly filtered to remove impurities in the kitchen waste and leave oily liquid, and then the oily liquid is heated to 110 ℃ at 100 ℃ until no gas is evaporated.
S2: adding dilute hydrochloric acid into the obtained oily liquid without moisture while stirring, stirring for 30min after the dilute hydrochloric acid is added, then adding ammonia water, stopping adding the ammonia water when the pH is adjusted to 6-7, and continuing stirring to obtain an oily substance. Wherein the mass ratio of the moisture-free oily liquid to the dilute hydrochloric acid is 1: 1.
s3: adding active carbon and zeolite into the oily matter, heating to 80-100 deg.C, stirring thoroughly for 0.5-1h, and filtering to obtain the desired oil extract. Wherein the mass ratio of the oily matter to the activated carbon to the zeolite is 9: 1: 1.
example 2: aldehyde-free adhesive for bamboo mat
The preparation method of the formaldehyde-free adhesive for the bamboo summer sleeping mat comprises the following steps:
p1: weighing 60 parts of oil extract and 25 parts of urea, adding the oil extract and the urea into 30 parts of water, uniformly stirring, adding polyphosphate, heating to the temperature of 120-140 ℃ while stirring, and reacting for 2-3 hours to obtain the fatty acid ester prepolymer. Wherein the mass ratio of the polyphosphate ester to the urea is 1: 5.
p2: and (3) cooling the temperature of the fatty acid ester prepolymer to 60-80 ℃, then adding 2.4 parts of diphenylmethane diisocyanate and 5 parts of Chinese herbal medicine extract, then adding azobisisobutyronitrile, stirring for 1-2h at 60-80 ℃, and cooling to obtain the aldehyde-free adhesive for the bamboo mat. Wherein the mass ratio of the azodiisobutyronitrile to the diphenylmethane diisocyanate is 1: 2.8. the Chinese herbal medicine extract is effective components of caulis polygoni multiflori, folium artemisiae argyi, kujian peel, orange peel and desmodium, and the mass ratio of the effective components of the caulis polygoni multiflori, the folium artemisiae argyi, the kujian peel, the desmodium and the orange peel is 1: 1: 1: 1: 5.
the grease extract is prepared by the following method:
s1: firstly, the kitchen waste is roughly filtered to remove impurities in the kitchen waste and leave oily liquid, and then the oily liquid is heated to 110 ℃ at 100 ℃ until no gas is evaporated.
S2: adding dilute hydrochloric acid into the obtained oily liquid without moisture while stirring, stirring for 30min after the dilute hydrochloric acid is added, then adding ammonia water, stopping adding the ammonia water when the pH is adjusted to 6-7, and continuing stirring to obtain an oily substance. Wherein the mass ratio of the moisture-free oily liquid to the dilute hydrochloric acid is 1: 1.
s3: adding active carbon and zeolite into the oily matter, heating to 80-100 deg.C, stirring thoroughly for 0.5-1h, and filtering to obtain the desired oil extract. Wherein the mass ratio of the oily matter to the activated carbon to the zeolite is 12: 1: 1.
example 3: aldehyde-free adhesive for bamboo mat
The preparation method of the formaldehyde-free adhesive for the bamboo summer sleeping mat comprises the following steps:
p1: weighing 50 parts of oil extract and 35 parts of urea, adding the oil extract and the urea into 25 parts of water, uniformly stirring, adding polyphosphate, heating to the temperature of 120-140 ℃ while stirring, and reacting for 2-3 hours to obtain the fatty acid ester prepolymer. Wherein the mass ratio of the polyphosphate ester to the urea is 1: 5.
p2: and (3) cooling the temperature of the fatty acid ester prepolymer to 60-80 ℃, then adding 2.4 parts of phenyl monoisocyanate and 8 parts of Chinese herbal medicine extract, then adding azobisisobutyronitrile, stirring for 1-2h at 60-80 ℃, and cooling to obtain the aldehyde-free adhesive for the bamboo mat. Wherein the mass ratio of the azodiisobutyronitrile to the phenyl monoisocyanate is 1: 2. the Chinese herbal medicine extract is effective components of caulis polygoni multiflori, folium artemisiae argyi, kujian peel, orange peel and desmodium, and the mass ratio of the effective components of the caulis polygoni multiflori, the folium artemisiae argyi, the kujian peel, the desmodium and the orange peel is 1: 1: 1: 1: 5.
the grease extract is prepared by the following method:
s1: firstly, the kitchen waste is roughly filtered to remove impurities in the kitchen waste and leave oily liquid, and then the oily liquid is heated to 110 ℃ at 100 ℃ until no gas is evaporated.
S2: adding dilute hydrochloric acid into the obtained oily liquid without moisture while stirring, stirring for 30min after the dilute hydrochloric acid is added, then adding ammonia water, stopping adding the ammonia water when the pH is adjusted to 6-7, and continuing stirring to obtain an oily substance. Wherein the mass ratio of the moisture-free oily liquid to the dilute hydrochloric acid is 1: 1.
s3: adding active carbon and zeolite into the oily matter, heating to 80-100 deg.C, stirring thoroughly for 0.5-1h, and filtering to obtain the desired oil extract. Wherein the mass ratio of the oily matter to the activated carbon to the zeolite is 10: 1: 1.
example 4: aldehyde-free adhesive for bamboo mat
The preparation method of the formaldehyde-free adhesive for bamboo summer sleeping mat in the embodiment 4 is the same as that in the embodiment 3, the specific steps are as follows, the only difference is that the cross-linking agent in the embodiment 4 is isophorone diisocyanate and phenyl monoisocyanate, the mass ratio of isophorone diisocyanate to phenyl monoisocyanate is 1: 2.
example 5: aldehyde-free adhesive for bamboo mat
The preparation method of the aldehyde-free adhesive for bamboo summer sleeping mat in the example 5 is the same as that in the example 3, and the specific steps are as in the example 3, except that the crosslinking agent in the example 4 is isophorone diisocyanate, phenyl monoisocyanate and hexamethylene diisocyanate, and the crosslinking agent is isophorone diisocyanate, phenyl monoisocyanate and hexamethylene diisocyanate is 1: 2: 1.
it is noted that the cross-linking agent in the embodiment of the present invention may be one or more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, phenyl monoisocyanate, and hexamethylene diisocyanate, and the addition ratio thereof is determined according to the specific situation.
Comparative example 1: aldehyde-free adhesive for bamboo mat
The preparation method of the formaldehyde-free adhesive for the bamboo summer sleeping mat comprises the following steps:
p1: weighing 50 parts of oil extract and 35 parts of urea, adding the oil extract and the urea into 25 parts of water, uniformly stirring, adding polyphosphate, heating to the temperature of 120-140 ℃ while stirring, and reacting for 2-3 hours to obtain the fatty acid ester prepolymer. Wherein the mass ratio of the polyphosphate ester to the urea is 1: 5.
p2: and (3) cooling the temperature of the fatty acid ester prepolymer to 60-80 ℃, then adding 2.4 parts of phenyl monoisocyanate, then adding azobisisobutyronitrile, stirring for 1-2 hours at the temperature of 60-80 ℃, and cooling to obtain the aldehyde-free adhesive for the bamboo mat. Wherein the mass ratio of the azodiisobutyronitrile to the phenyl monoisocyanate is 1: 2.
the grease extract is prepared by the following method:
s1: firstly, the kitchen waste is roughly filtered to remove impurities in the kitchen waste and leave oily liquid, and then the oily liquid is heated to 110 ℃ at 100 ℃ until no gas is evaporated.
S2: adding dilute hydrochloric acid into the obtained oily liquid without moisture while stirring, stirring for 30min after the dilute hydrochloric acid is added, then adding ammonia water, stopping adding the ammonia water when the pH is adjusted to 6-7, and continuing stirring to obtain an oily substance. Wherein the mass ratio of the moisture-free oily liquid to the dilute hydrochloric acid is 1: 1.
s3: adding active carbon and zeolite into the oily matter, heating to 80-100 deg.C, stirring thoroughly for 0.5-1h, and filtering to obtain the desired oil extract. Wherein the mass ratio of the oily matter to the activated carbon to the zeolite is 10: 1: 1.
comparative example 2: aldehyde-free adhesive for bamboo mat
The preparation method of the formaldehyde-free adhesive for the bamboo summer sleeping mat comprises the following steps:
weighing 35 parts of urea, adding the urea into 25 parts of water, uniformly stirring, raising the temperature to 60-80 ℃, then adding 2.4 parts of phenyl monoisocyanate and 8 parts of Chinese herbal medicine extract, adding azodiisobutyronitrile, stirring for 1-2 hours at the temperature of 60-80 ℃, and cooling to obtain the formaldehyde-free adhesive for the bamboo mat. Wherein the mass ratio of the azodiisobutyronitrile to the phenyl monoisocyanate is 1: 2. the Chinese herbal medicine extract is effective components of caulis polygoni multiflori, folium artemisiae argyi, kujian peel, orange peel and desmodium, and the mass ratio of the effective components of the caulis polygoni multiflori, the folium artemisiae argyi, the kujian peel, the desmodium and the orange peel is 1: 1: 1: 1: 5.
application example 1:
the formaldehyde-free adhesive prepared in the embodiment 1 of the invention can be applied to bamboo summer sleeping mats, and the using process comprises the following steps: coating one side of a bamboo mat blank with a layer of 0.05-0.1mm thick formaldehyde-free adhesive for the bamboo mat in the embodiment 1 and adhering the bamboo mat blank to a base fabric, and then placing the bamboo mat blank in a hot press, wherein the temperature of the hot press is 100 plus materials and 120 ℃, the pressure is 0.3-0.5MPa, and the hot pressing time is 10-15 s.
Application example 2:
the application process of the aldehyde-free adhesive prepared in the embodiment 2 of the invention applied to the bamboo mat is the same as that of the application example 1, and the specific steps refer to the application example 1.
Application example 3:
the application process of the aldehyde-free adhesive prepared in the embodiment 3 of the invention applied to the bamboo summer sleeping mat is the same as that of the application example 1, and the specific steps refer to the application example 1.
Comparative application example 1:
the application process of the aldehyde-free adhesive prepared in comparative example 1 of the present invention applied to the bamboo mat is the same as in application example 1, and the specific steps refer to application example 1.
Comparative application example 2:
the application process of the aldehyde-free adhesive prepared in comparative example 2 of the present invention applied to the bamboo mat is the same as that of application example 1, and the specific steps refer to application example 1.
The above comparative examples 1 to 3 and comparative application examples 1 to 2 were subjected to performance tests, and the test results thereof are shown in the following table 1.
Table 1 application of aldehyde-free adhesives to performance test of bamboo mat
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Application comparative example 1 | Comparative application example 2 | |
| Water absorption/%) | 7.6 | 7.1 | 6.8 | 8.5 | 10.2 |
| Bonding strength/MPa | 1.36 | 1.41 | 1.57 | 1.23 | 0.95 |
| Modulus of elasticity/MPa | 4309 | 4524 | 4675 | 3856 | 3120 |
| Formaldehyde emission amount/mg/L | Not detected out | Not detected out | Not detected out | Not detected out | Not detected out |
As can be seen from the data in table 1 above, the formaldehyde-free adhesive of the present invention is used for preparing a bamboo mat, and does not generate formaldehyde, and it can be seen that the lower the water absorption rate is, the greater the bonding strength of the adhesive is, and when the formaldehyde-free adhesive of the present invention contains both the oil extract and the herbal extract, the water resistance is better, and the bonding strength is greater. When the aldehyde-free adhesive does not contain a fat extract or a herbal extract, the water absorption rate thereof increases and the adhesive strength decreases. Compared with the existing adhesive, the formaldehyde-free adhesive for the bamboo summer sleeping mat is a more environment-friendly adhesive for the bamboo summer sleeping mat, and has obvious advantages.
It should be noted that the formaldehyde-free adhesive of the present invention can be applied to other household materials such as wood, besides the bamboo mat.
The technical features of the embodiments described above can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The formaldehyde-free adhesive for the bamboo summer sleeping mat is characterized by comprising the following raw materials in parts by weight: 40-60 parts of grease extract, 25-45 parts of urea, 5-10 parts of Chinese herbal medicine extract, 2.4-3.0 parts of cross-linking agent and 20-30 parts of water.
2. The formaldehyde-free adhesive for bamboo summer sleeping mat according to claim 1, wherein the oil extract is prepared by the following method:
s1: firstly, coarsely filtering the kitchen waste to remove impurities in the kitchen waste and leave oily liquid, and then heating the oily liquid to 100-110 ℃ until no gas is evaporated;
s2: adding dilute hydrochloric acid into the obtained oily liquid without moisture while stirring, stirring for 30min after the dilute hydrochloric acid is added, then adding ammonia water, stopping adding the ammonia water when the pH is adjusted to 6-7, and continuing stirring to obtain an oily substance;
s3: adding active carbon and zeolite into the oily matter, heating to 80-100 deg.C, stirring thoroughly for 0.5-1h, and filtering to obtain the desired oil extract.
3. The formaldehyde-free adhesive for bamboo mats according to claim 2, wherein the mass ratio of the moisture-free oily liquid to the diluted hydrochloric acid in step S2 is 1: 1.
4. the formaldehyde-free adhesive for bamboo mats according to claim 2, wherein the mass ratio of the oil, the activated carbon and the zeolite in step S3 is (9-12): 1: 1.
5. the formaldehyde-free adhesive for the bamboo mat according to claim 1, wherein the Chinese herbal medicine extract is effective components of vine of multiflower knotweed, folium artemisiae argyi, kujian peel, orange peel and desmodium, and the mass ratio of the effective components of the vine of multiflower knotweed, the folium artemisiae argyi, the kujian peel, the desmodium and the orange peel is 1: 1: 1: 1: 5.
6. the aldehyde-free adhesive for bamboo mats according to claim 1, wherein the crosslinking agent is one or more of toluene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, phenyl monoisocyanate, and hexamethylene diisocyanate.
7. The method for preparing the formaldehyde-free adhesive for the bamboo mat according to any one of claims 1 to 6, comprising the steps of:
p1: weighing the grease extract and urea according to the parts by weight, adding the grease extract and urea into water, uniformly stirring, adding polyphosphate, heating to the temperature of 120 ℃ and 140 ℃ while stirring, and reacting for 2-3h to obtain a fatty acid ester prepolymer; the mass ratio of the polyphosphate ester to the urea is 1: (4-5);
p2: cooling the temperature of the fatty acid ester prepolymer to 60-80 ℃, then adding the cross-linking agent and the Chinese herbal medicine extract in parts by weight, then adding azodiisobutyronitrile, stirring for 1-2 hours at the temperature, and cooling to obtain the aldehyde-free adhesive for the bamboo mat; the mass ratio of the azodiisobutyronitrile to the crosslinking agent is 1: (1.5-2.8).
8. The use of the aldehyde-free adhesive prepared according to claim 7 in a bamboo mat, wherein the use process comprises: coating 0.05-0.1mm of bamboo mat blank on one surface of the bamboo mat blank with formaldehyde-free adhesive, adhering the bamboo mat blank to a base fabric, and then placing the bamboo mat blank in a hot press, wherein the temperature of the hot press is 100 plus one of 120 ℃, the pressure is 0.3-0.5MPa, and the hot pressing time is 10-15 s.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092202A (en) * | 1974-11-04 | 1978-05-30 | Dr. Kurt Herberts & Co. Gesellschaft Mit Beschrankter Haftung Vorm. Otto Louis Herberts | Method for joining foils |
| CN101709211A (en) * | 2009-12-03 | 2010-05-19 | 东营市盛基环保工程有限公司 | Nonformaldehyde nonpoisonous adhesive and preparation method thereof |
| CN102732200A (en) * | 2012-07-13 | 2012-10-17 | 中物院成都科学技术发展中心 | Vegetable oil-based adhesive, composite plywood and method for manufacturing composite plywood |
| CN102807834A (en) * | 2012-05-07 | 2012-12-05 | 苏州市胶粘剂厂有限公司 | Single-component polyurethane adhesive and method for preparing same |
| CN104262561A (en) * | 2014-09-16 | 2015-01-07 | 浙江恒丰新材料有限公司 | Simple and convenient synthesis method and application of waste grease based polyhydric alcohol |
| CN104559836A (en) * | 2014-12-18 | 2015-04-29 | 方萌 | Binder with insect-resistant effect |
| CN105482760A (en) * | 2015-12-29 | 2016-04-13 | 青岛博泰美联化工技术有限公司 | Isocyanate adhesive |
| CN108641673A (en) * | 2018-05-10 | 2018-10-12 | 北京盛大华源科技有限公司 | A kind of preparation method of plywood without formaldehyde release |
| CN109181585A (en) * | 2018-09-25 | 2019-01-11 | 湖南绿达新材料有限公司 | A kind of lignin-base is without aldehyde adhesive and preparation method thereof |
-
2020
- 2020-08-11 CN CN202010799076.0A patent/CN112143458A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4092202A (en) * | 1974-11-04 | 1978-05-30 | Dr. Kurt Herberts & Co. Gesellschaft Mit Beschrankter Haftung Vorm. Otto Louis Herberts | Method for joining foils |
| CN101709211A (en) * | 2009-12-03 | 2010-05-19 | 东营市盛基环保工程有限公司 | Nonformaldehyde nonpoisonous adhesive and preparation method thereof |
| CN102807834A (en) * | 2012-05-07 | 2012-12-05 | 苏州市胶粘剂厂有限公司 | Single-component polyurethane adhesive and method for preparing same |
| CN102732200A (en) * | 2012-07-13 | 2012-10-17 | 中物院成都科学技术发展中心 | Vegetable oil-based adhesive, composite plywood and method for manufacturing composite plywood |
| CN104262561A (en) * | 2014-09-16 | 2015-01-07 | 浙江恒丰新材料有限公司 | Simple and convenient synthesis method and application of waste grease based polyhydric alcohol |
| CN104559836A (en) * | 2014-12-18 | 2015-04-29 | 方萌 | Binder with insect-resistant effect |
| CN105482760A (en) * | 2015-12-29 | 2016-04-13 | 青岛博泰美联化工技术有限公司 | Isocyanate adhesive |
| CN108641673A (en) * | 2018-05-10 | 2018-10-12 | 北京盛大华源科技有限公司 | A kind of preparation method of plywood without formaldehyde release |
| CN109181585A (en) * | 2018-09-25 | 2019-01-11 | 湖南绿达新材料有限公司 | A kind of lignin-base is without aldehyde adhesive and preparation method thereof |
Non-Patent Citations (16)
| Title |
|---|
| NAN ZHANG: "Migration studies and chemical characterization of low", 《PACKAGING TECHNOLOGY AND SICENCE》 * |
| 吴蓁等: "新型脲醛树脂胶黏剂的改性 ", 《化工进展》 * |
| 周祯祥: "《张仲景药物学》", 30 December 2018, 中国医药科技出版社 * |
| 山西省化工研究所: "《塑料橡胶加工助剂》", 30 March 1985, 化学工业出版社 * |
| 巴特勒: "《有机化学基础 理论和应用 下》", 30 April 1981, 人民教育出版社 * |
| 张仁俊: "《实用眼科药物学》", 30 September 2015, 人民军医出版社 * |
| 张巧玲: "《化工工艺学》", 30 July 2015, 国防工业出版社 * |
| 方亮: "《药用高分子材料学》", 30 August 2015, 中国医药科技出版社 * |
| 日本CMC编辑部: "《塑料橡胶用新型添加剂》", 30 December 1989, 化学工业出版社 * |
| 杨铭铎: "《食品加工中的化学变化》", 30 October 1989, 黑龙江科学技术出版社 * |
| 王兴国: "《油科科学原理》", 30 August 2017, 中国轻工业出版社 * |
| 王建新: "《精细有机合成》", 30 April 2007, 中国轻工业出版社 * |
| 谷克仁: "《植物油料资源综合利用》", 30 January 2001, 中国轻工业出版社 * |
| 赵庆年: "《天然药物学》", 28 February 2018, 江苏科学技术出版社 * |
| 郑荣梁: "《自由基生物学》", 30 October 1992, 高等教育出版社 * |
| 马振友: "《新编中西皮肤药物手册》", 30 January 2019, 河南科技大学出版社 * |
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