CN113736392A - Odor-free antistatic carpet back adhesive composition, back adhesive, preparation method of back adhesive and carpet - Google Patents
Odor-free antistatic carpet back adhesive composition, back adhesive, preparation method of back adhesive and carpet 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
- C09J115/00—Adhesives based on rubber derivatives
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G27/00—Floor fabrics; Fastenings therefor
- A47G27/02—Carpets; Stair runners; Bedside rugs; Foot mats
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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
- C09J11/04—Non-macromolecular additives inorganic
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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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08K2201/001—Conductive additives
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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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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- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention relates to the technical field of carpet back glue, and discloses a smell-clearing and static-free carpet back glue composition, a back glue, a preparation method thereof and a carpet, wherein the smell-clearing and static-free carpet back glue composition comprises a latex part, an auxiliary agent part and a functional additive part; the latex part comprises the following components in parts by weight: 200-300 parts of synthetic latex and 200-300 parts of vulcanized latex; the auxiliary agent part comprises the following components in parts by weight: 5-10 parts of silane coupling agent, 2-5 parts of defoaming agent and 2-5 parts of hydrophobic agent; the functional additive part comprises the following components in parts by weight: 5-10 parts of graphite, 5-10 parts of conductive carbon black and 0.5-1 part of carbon nano tube. The carpet back adhesive composition obtained by the invention has better conductivity, and is conductive to the carpet after being used on the carpet, so that the carpet has better antistatic performance.
Description
Technical Field
The invention relates to the technical field of carpet back glue, in particular to a smell-cleaning and static-electricity-preventing carpet back glue composition, a back glue, a preparation method of the back glue and a carpet.
Background
The carpet is one of the traditional arts with a long history in the world, and the carpet can be classified into pure wool carpet, blended carpet, chemical fiber carpet, plastic carpet, grass carpet and the like according to material quality. The handmade carpet is made by manually weaving Australian and New Zealand wool, and is processed and manufactured by a complete set of more than ten traditional manual procedures of weaving, flattening, slicing, washing, throwing, repairing and the like, and has compact structure, firmness and firmness.
Floor carpets have the advantages of noise reduction, thermal insulation, decorative effects to improve foot feel, slip prevention, air pollution prevention, etc., and thus are becoming more and more popular for use. To prevent the carpet from slipping, it is common to provide the carpet with a backing adhesive.
When the carpet is laid in some places, the carpet is required to have an antistatic function, for example, in a laboratory with higher requirements on electrical indexes, if static generated by walking of pedestrians on the carpet is not conducted away, the static easily causes abnormal operation of experimental equipment; as another example, in home, especially when the winter climate is dry, static electricity generated on the carpet can reduce the experience of pedestrians.
The Chinese patent application with the publication number of CN109322084A discloses an anti-static carpet, and also discloses a carpet weaving machine and a yarn output mechanism, wherein a yarn soaking box and a drying mechanism are arranged between the carpet weaving machine and the yarn output mechanism, anti-static liquid is arranged in the yarn soaking box, the yarn is output from the yarn output mechanism, enters the yarn soaking box and contacts with the anti-static liquid, the contact time is controlled to be 5-10 seconds, then the soaked yarn enters the drying mechanism for drying, the drying temperature in the drying mechanism is controlled to be 120 ℃, the drying time is 25-30 seconds, then the yarn enters the carpet weaving machine for weaving, and the anti-static liquid is composed of dodecanol, potassium phosphide, sodium hydroxide and water.
The antistatic carpet in the scheme needs to be soaked and dried during preparation, and a yarn soaking box and a drying mechanism are arranged between a carpet weaving machine and a yarn output mechanism, so that the carpet is very inconvenient to prepare.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the odor-removing and static-preventing carpet back adhesive composition which has better conductivity, is beneficial to conductivity of a carpet after being used on the carpet and enables the carpet to have better static-preventing performance.
In order to achieve the first purpose, the invention provides the following technical scheme: an odor-free antistatic carpet back glue composition comprises raw materials of a latex part, an auxiliary agent part and a functional additive part;
the latex part comprises the following components in parts by weight:
200 parts of synthetic latex
200-300 parts of vulcanized latex;
the auxiliary agent part comprises the following components in parts by weight:
5-10 parts of silane coupling agent
2-5 parts of defoaming agent
2-5 parts of a water repellent agent;
the functional additive part comprises the following components in parts by weight:
5-10 parts of graphite
5-10 parts of conductive carbon black
0.5-1 part of carbon nano tube.
The carpet back adhesive obtained by adopting the components has better conductivity, and can effectively enhance the conductivity and antistatic performance of the carpet after being used for preparing the carpet. The carpet prepared by the carpet back glue is tested for surface resistivity, and the result shows that the surface resistivity of the carpet can reach 105The carpet has the best antistatic performance, so that the carpet back glue has a very outstanding antistatic function.
In addition, the carpet back glue is not easy to generate peculiar smell, and can better permeate into the carpet, so that the carpet back glue can be bonded to the bottom surface of the carpet and adjacent hairs or silk threads in the carpet to form a complete glue surface, the cohesiveness of the carpet is greatly improved, and the carpet back glue is used for a gun-punched manual carpet and is not easy to fall off, so that the carpet is well shaped, and the shrinkage of the carpet can be limited.
The synthetic latex and the vulcanized latex are matched for use, so that the waterproof performance, the elasticity and the elongation of the back glue of the carpet are improved, and the back glue is not easy to break; but also greatly reduces the smell of the carpet back glue and is more environment-friendly. The silane coupling agent as the carpet back glue reinforcing agent has the action principle that the silane coupling agent has two groups; a group can be bonded to the bonded backbone material; and the other group can be combined with a high polymer material or an adhesive, so that a chemical bond with higher strength is formed on a bonding interface, and the bonding strength of the glue is greatly increased. The defoaming agent can quickly eliminate bubbles of the back glue of the carpet, so that the glue surface formed later is more complete and smooth, and the mechanical strength is higher. The water repellent agent can improve the waterproof performance of the carpet back adhesive, and further improve the service life of the carpet back adhesive. Graphite, conductive carbon black and carbon nano tubes all belong to good electric conductors, the electric conductivity of the carpet back glue can be greatly enhanced by combining the graphite, the conductive carbon black and the carbon nano tubes, the purpose of improving the electric conductivity can be achieved without using expensive graphene, and the cost is obviously reduced.
Tests show that the carpet back adhesive has better stability when the pH value is 8-10, and is not easy to deposit or delaminate.
Further, the particle size of the conductive carbon black is 20-25 μm.
Within a certain range, the smaller the particle size of the conductive carbon black, the larger the specific surface area, the higher the structure, and the better the conductivity. Tests show that when the particle size of the conductive carbon black is between 20 and 25 mu m, the conductivity of the carpet back adhesive is better, and the conductive carbon black is more suitable for preparing a carpet.
Further, the latex part also comprises the following components in parts by weight:
10-20 parts of neoprene latex
10-20 parts of butyronitrile latex.
The neoprene latex and the butyronitrile latex can well increase the mechanical strength of the carpet back glue, and the service life of the carpet back glue is prolonged.
Further, the latex part also comprises 50-100 parts by weight of styrene-butadiene latex, and the auxiliary agent part also comprises 5-10 parts by weight of rapid penetration agent.
The addition of the styrene-butadiene latex is beneficial to improving the bonding performance of the carpet back glue and the carpet bottom surface, so that the carpet has better anti-skid performance. The rapid penetrating agent can obviously improve the permeability of the carpet back adhesive, so that the carpet back adhesive has better cohesiveness to the carpet. The styrene-butadiene latex and the rapid penetrating agent enable the carpet back glue to better penetrate into the carpet, so that the cohesiveness of the carpet is improved, and the carpet is not easy to fall off.
Further, the rapid penetration agent is an acetylene glycol nonionic surfactant.
The alkynediol nonionic surfactant has multiple functions of wetting, defoaming, improving dispersibility, improving flowing and leveling property and the like, and can effectively reduce surface tension, control foam and stabilize consistency and viscosity when being applied to the preparation method; compared with the traditional surfactant, the alkynediol nonionic surfactant has lower water sensitivity and better matching with other components, so that the prepared carpet back adhesive has good adhesion with a carpet and is less prone to hair falling.
Further, the functional additive part also comprises the following components in parts by weight:
100 portions of heavy calcium carbonate and 200 portions of sodium bicarbonate
100 portions of filler
50-100 parts of mica powder;
the filler is one or more than two of talcum powder, washing kaolin, calcined kaolin, light calcium carbonate, titanium dioxide and lithopone;
the fineness of the filler is 800-1000 meshes; the selected fineness of the mica powder is more than 2000 meshes; the fineness of the heavy calcium carbonate is 100-200 meshes.
The heavy calcium carbonate is beneficial to improving the permeability of glue, so that the bonding property of the carpet back glue to the carpet is better, and the surface of the carpet back glue is bright and fine.
The filler can reduce the cost, and the talcum powder, the water-washed kaolin, the calcined kaolin, the light calcium carbonate, the titanium pigment and the lithopone can improve the fire resistance, the acid resistance, the insulating wire and the covering power of the carpet back adhesive. Particularly, the talcum powder has lubricating property, can improve the hand feeling of the back glue of the carpet, improve the resilience of the finished carpet product, prevent the back glue from being back-adhered due to overhigh humidity of the finished carpet product and improve the leveling state of the back glue.
The mica powder has good chemical stability of acid and alkali resistance, can not change in water and air, can improve the storage stability of the carpet back adhesive, and prolongs the service life of the back adhesive.
Through the combination of the ground limestone, the mica powder and the fineness of the filler, the carpet back adhesive can be quickly permeated into the carpet, and the fineness and the smoothness of the carpet back adhesive can be ensured.
Further, the auxiliary agent part also comprises 2-5 parts by weight of a foam inhibitor.
The addition of the foam inhibitor can obviously improve the tiny needle hole bubbles of the carpet back adhesive, no micro bubbles are generated during the carpet gluing, no needle hole is generated after the back adhesive is dried completely, the mechanical strength of the carpet back adhesive is higher, and the integral aesthetic property of the carpet is better.
Further, the auxiliary agent part also comprises the following components in parts by weight:
5-10 parts of anti-settling and anti-water-diversion agent
3-7 parts of a synergistic agent.
The raw material components are added with the anti-settling and anti-moisture agent, so that powder settling and glue separation can be well prevented; the functional additive is more uniform and easier to disperse due to the addition of the synergistic agent, the carpet back glue is not easy to agglomerate during storage, and the latex and the powder in the functional additive are not easy to separate. The synergistic effect of the anti-settling water diversion agent and the synergistic agent can greatly prolong the storage time of the carpet back adhesive, facilitate the batch production and storage of the carpet back adhesive and improve the production efficiency.
Further, the active ingredients of the anti-settling and anti-water-splitting agent are polyamide and polyester; the synergist is a high molecular block copolymer.
The polyamide and the polyester are taken as functional groups, are respectively and mutually integrated, and can improve the structural viscosity of the back adhesive of the carpet through the action with resin, and can well limit the sedimentation of powder in the functional additive. Compared with the classical dispersion and wetting assistant, the high molecular block copolymer has strong adsorption effect on the surface of powder in the functional additive, obviously improves the wetting effect on particles in the functional additive powder, and also has excellent anti-flocculation effect to prevent the re-aggregation of dispersed particles. Through the cooperation of the two components, the stability of the back glue of the carpet can be better improved, and the storage time of the back glue is prolonged.
Further, the auxiliary agent part also comprises the following components in parts by weight:
3-7 parts of nonionic thickening agent
2-5 parts of a multifunctional additive.
The nonionic thickening agent can well increase the consistency of the back glue of the carpet; the multifunctional auxiliary agent is mainly used for adjusting the pH value of the carpet back adhesive, so that the stability of the carpet back adhesive is improved.
The invention also aims to provide the odor-free antistatic carpet back adhesive which has better conductivity, is favorable for carpet conductivity after being used on a carpet and enables the carpet to have better antistatic performance.
In order to achieve the second purpose, the invention provides the following technical scheme:
the odor-removing and static-free carpet back adhesive comprises the odor-removing and static-free carpet back adhesive composition in the scheme, and also comprises water, wherein the water accounts for more than 50 parts by weight, and the pH value interval of the odor-removing and static-free carpet back adhesive is adjusted to be 8-10 by a pH adjusting agent.
The odor-purifying and anti-static carpet back adhesive prepared from the odor-purifying and anti-static carpet back adhesive composition has better conductivity, and can effectively enhance the conductivity and anti-static performance of the carpet after being used for preparing the carpet.
The invention also aims to provide a preparation method of the odor-free antistatic carpet back adhesive, which is simple, can greatly improve the adhesive force of the carpet back adhesive through 'encapsulating powder with glue', has higher production efficiency, and can improve the electric conductivity of the carpet back adhesive through grinding.
In order to achieve the third purpose, the invention provides the following technical scheme: the preparation process of the odor-removing anti-static carpet back adhesive in the scheme comprises the following steps:
adding the raw materials of the auxiliary agent part into water for mixing to obtain a fluid prefabricated product a;
uniformly mixing all raw materials of the latex part to obtain a prefabricated product b, and controlling the pH value of the prefabricated product b to be 8-10;
grinding the conductive carbon black by using a sand mill;
uniformly mixing the prefabricated product a and the prefabricated product b to form a prefabricated product c, adding the ground conductive carbon black and other raw materials of the functional additive part into the prefabricated product c, uniformly mixing, and adjusting the pH value to be 8-10.
Firstly, uniformly mixing the prefabricated product a and the prefabricated product b to form a prefabricated product c, then adding the raw material of the functional additive, wherein the powder in the functional additive is coated by latex to form a 'powder-in-rubber' state, the adhesive bonding property is better, so that the adhesive force is improved. In addition, after the conductive carbon black is ground, the particle size of the conductive carbon black can be reduced, so that the conductivity of the conductive carbon black is improved, and the effect of improving the conductivity of the carpet back adhesive is achieved.
Further, in the step b of uniformly mixing the raw materials of the latex part to obtain the prefabricated product, 1 percent of emulsifier based on the total weight of the latex part is added.
The emulsifier has good emulsifying effect and is more beneficial to quickly and uniformly mixing all the raw materials.
The invention aims to provide a carpet which has good conductive performance and antistatic performance and is firmly bonded with a carpet back adhesive.
In order to achieve the fourth aim, the invention provides the following technical scheme: a carpet comprises a cloth layer and a back adhesive layer, wherein the back adhesive layer is made of the odor-removing and anti-static carpet back adhesive in the scheme; the cloth layer is made of one or more than two of bamboo fiber, acrylic fiber, nylon, terylene, wool, cotton and silk.
The gum layer that includes in the carpet is antistatic, and the production that reduces static is strong, and the adhesion strength is also strong, and restriction cloth layer that can be fine falls hair, and waterproof performance is high moreover, and the carpet gum is also difficult to hydrolyze, fall the powder, can improve the life of carpet greatly. The carpet has the advantages of good environmental protection performance, no pungent smell and beautiful appearance. When the carpet is degummed, the carpet gum is directly supplemented at the degummed position, so that the vacancy can be filled, and the purpose of secondary repair is achieved without replacing the carpet.
In conclusion, the invention has the following beneficial effects:
1. the carpet back adhesive composition obtained by the components is not easy to generate peculiar smell, has better conductivity, can effectively enhance the conductivity and antistatic property of a carpet after being used for preparing the carpet, can better permeate into the carpet, realizes the bonding of the carpet back adhesive to the bottom surface of the carpet and the mutual bonding of adjacent hairs or silk threads in the carpet, forms a complete adhesive surface, greatly improves the bonding property with the carpet, and is not easy to fall off when being used for a gun-punched handmade carpet.
2. The carpet back glue obtained by the components is used in a carpet, so that the carpet is well shaped, and the shrinkage of the carpet can be limited; the synthetic latex and the vulcanized latex are matched for use, so that the waterproof performance, the elasticity and the elongation of the back glue of the carpet are improved, and the back glue is not easy to break; but also greatly reduces the smell of the carpet back glue and is more environment-friendly. The silane coupling agent as the carpet back glue reinforcing agent has the action principle that the silane coupling agent has two groups; a group can be bonded to the bonded backbone material; and the other group can be combined with a high polymer material or an adhesive, so that a chemical bond with higher strength is formed on a bonding interface, and the bonding strength of the glue is greatly increased. The defoaming agent can quickly eliminate bubbles of the back glue of the carpet, so that the glue surface formed later is more complete and smooth, and the mechanical strength is higher. The water repellent agent can improve the waterproof performance of the carpet back adhesive, and further improve the service life of the carpet back adhesive. Graphite, conductive carbon black and carbon nano tubes all belong to good electric conductors, the electric conductivity of the carpet back glue can be greatly enhanced by combining the graphite, the conductive carbon black and the carbon nano tubes, the purpose of improving the electric conductivity can be achieved without using expensive graphene, and the cost is obviously reduced. Tests show that the carpet back adhesive has better stability when the pH value is 8-10, and is not easy to deposit or delaminate.
3. Within a certain range, the smaller the particle size of the conductive carbon black, the larger the specific surface area, the higher the structure, and the better the conductivity. Tests show that when the particle size of the conductive carbon black is between 20 and 25 mu m, the conductivity of the carpet back adhesive is better, and the conductive carbon black is more suitable for preparing a carpet.
4. The addition of the styrene-butadiene latex is beneficial to improving the bonding performance of the carpet back glue and the ground, so that the anti-skid performance of the carpet is better. The rapid penetrating agent can obviously improve the permeability of the carpet back adhesive, so that the carpet back adhesive has better cohesiveness to the carpet. The styrene-butadiene latex and the rapid penetrating agent enable the carpet back glue to better penetrate into the carpet, so that the cohesiveness of the carpet is improved, and the carpet is not easy to fall off.
5. Through the combination of the ground limestone, the mica powder and the fineness of the filler, the carpet back adhesive can be quickly permeated into the carpet, and the fineness and the smoothness of the carpet back adhesive can be ensured.
6. Firstly, uniformly mixing the prefabricated product a and the prefabricated product b to form a prefabricated product c, then adding the raw material of the functional additive, wherein the powder in the functional additive is coated by latex to form a 'powder-in-rubber' state, the adhesive bonding property is better, so that the adhesive force is improved. In addition, after the conductive carbon black is ground, the particle size of the conductive carbon black can be reduced, so that the conductivity of the conductive carbon black is improved, and the effect of improving the conductivity of the carpet back adhesive is achieved.
7. The gum layer that includes in the carpet is antistatic, and the production that reduces static is strong, and the adhesion strength is also strong, and restriction cloth layer that can be fine falls hair, and waterproof performance is high moreover, and the carpet gum is also difficult to hydrolyze, fall the powder, can improve the life of carpet greatly. The carpet has the advantages of good environmental protection performance, no pungent smell and beautiful appearance. When the carpet is degummed, the carpet gum is directly supplemented at the degummed position, so that the vacancy can be filled, and the purpose of secondary repair is achieved without replacing the carpet.
Drawings
FIG. 1 is a schematic representation of the use of a neat antistatic carpet backsize;
FIG. 2 is a graphical representation of the test surface resistivity at air humidity greater than 75% for carpet backsize coated with comparative example 2;
FIG. 3 is a graphical representation of the test surface resistivity at air humidity less than 70% for carpet backsize coated with comparative example 4;
FIG. 4 is a graphical representation of the test surface resistivity at air humidity greater than 75% for carpet backsize coated with comparative example 5;
fig. 5 is a graph of softness as a function of temperature for carpets coated with the carpet backsizes of example 13 and comparative example 14, respectively.
Reference numerals: 1. a container; 2. gun-punching a carpet; 21. a U-shaped warp unit; 22. a weft unit 22; 3. and (5) carrying out carpet back gluing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the tables in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art with the understanding of the inventive concept of the present invention are within the scope of the present invention.
In order to facilitate understanding of the technical solution of the present invention, the odor-free antistatic carpet back adhesive of the present invention is described in further detail below, but is not to be construed as limiting the scope of the present invention.
The invention discloses a smell-removing and static-free carpet back glue composition, which comprises raw materials of a latex part, an auxiliary agent part and a functional additive part;
wherein the latex part comprises the following components in parts by weight:
200 parts of synthetic latex
200-300 parts of vulcanized latex;
wherein the auxiliary agent part comprises the following components in parts by weight:
5-10 parts of silane coupling agent
2-5 parts of defoaming agent
2-5 parts of a water repellent agent;
wherein the functional additive part comprises the following components in parts by weight:
5-10 parts of graphite
5-10 parts of conductive carbon black
0.5-1 part of carbon nano tube.
The carpet back adhesive obtained by adopting the components has better conductivity, and can effectively enhance the conductivity and antistatic performance of the carpet after being used for preparing the carpet.
Preferably, the water is deionized water, which does not easily introduce impurities.
Preferably, the particle size of the conductive carbon black is 20-25 μm, so that the particle size of the conductive carbon black is reduced, the specific surface area and the structure of the conductive carbon black are increased, and the conductivity of the carpet back adhesive is improved.
Preferably, the latex part further comprises the following components in parts by weight:
10-20 parts of neoprene latex
10-20 parts of butyronitrile latex
The mechanical strength of the carpet back adhesive can be well increased, and the service life of the carpet back adhesive is favorably prolonged.
Preferably, the latex part also comprises 50-100 parts by weight of styrene-butadiene latex, and the auxiliary agent part also comprises 5-10 parts by weight of rapid penetrating agent, so that the back glue of the carpet can better penetrate into the carpet, thereby improving the cohesiveness of the carpet and preventing the carpet from falling.
Preferably, the fast penetrating agent is an acetylenic diol nonionic surfactant, which is effective in reducing surface tension, controlling foam, and stabilizing consistency and viscosity.
Preferably, the functional additive part further comprises the following components in parts by weight:
100 portions of heavy calcium carbonate and 200 portions of sodium bicarbonate
100 portions of filler
50-100 parts of mica powder;
the filler is one or more than two of talcum powder, washing kaolin, calcined kaolin, light calcium carbonate, titanium dioxide and lithopone;
the fineness of the filler is 800-1000 meshes; the selected fineness of the mica powder is more than 2000 meshes; the fineness of the heavy calcium carbonate is 100-200 meshes.
Through the combination of the ground limestone, the mica powder and the fineness of the filler, the carpet back adhesive can be quickly permeated into the carpet, and the fineness and the smoothness of the carpet back adhesive can be ensured.
Preferably, the auxiliary agent part also comprises 2-5 parts by weight of a foam inhibitor, so that tiny needle holes of the carpet back adhesive can be removed, and the mechanical strength of the carpet back adhesive is further improved.
Preferably, the auxiliary agent part also comprises the following components in parts by weight:
5-10 parts of anti-settling and anti-water-diversion agent
3-7 parts of a synergistic agent.
The active ingredients of the anti-settling and anti-water-splitting agent are polyamide and polyester; the synergist is a high molecular block copolymer. The synergistic effect of the anti-settling water diversion agent and the synergistic agent can greatly prolong the storage time of the carpet back adhesive, facilitate the batch production and storage of the carpet back adhesive and improve the production efficiency.
Preferably, the auxiliary agent part also comprises the following components in parts by weight:
3-7 parts of nonionic thickening agent
2-5 parts of a multifunctional additive.
The nonionic thickener is a polyurethane thickener; the multifunctional auxiliary agent is preferably organic alcohol amine. The nonionic thickening agent can well increase the consistency of the back glue of the carpet; the multifunctional auxiliary agent is mainly used for adjusting the pH value of the carpet back adhesive, so that the stability of the carpet back adhesive is improved.
The invention further discloses a smell-clearing and static-free carpet back adhesive, which comprises the smell-clearing and static-free carpet back adhesive composition in the scheme, and water, wherein the water accounts for more than 50 parts by weight, and the pH value interval of the smell-clearing and static-free carpet back adhesive is adjusted to be 8-10 by a pH adjusting agent.
The conductive performance of the antistatic agent is better, and the antistatic agent is conductive to the carpet after being used on the carpet, so that the carpet has better antistatic performance.
The invention further discloses a preparation method of the odor-removing and static-free carpet back adhesive in the scheme, which comprises the following steps:
adding the raw materials of the auxiliary agent part into water for mixing to obtain a fluid prefabricated product a;
uniformly mixing all raw materials of the latex part to obtain a prefabricated product b, and controlling the pH value of the prefabricated product b to be 8-10;
grinding the conductive carbon black by using a sand mill;
uniformly mixing the prefabricated product a and the prefabricated product b to form a prefabricated product c, adding the ground conductive carbon black and other raw materials of the functional additive part into the prefabricated product c, uniformly mixing, and adjusting the pH value to be 8-10.
And (c) uniformly mixing all the raw materials of the latex part to obtain a prefabricated product b, and adding 1 percent of emulsifier in the total weight of the latex part.
The preparation method of the embodiment is simple, the adhesive force of the carpet back adhesive can be greatly improved through the 'glue coating powder', and the production efficiency is higher.
The invention further discloses a carpet, which not only has good conductive performance and antistatic performance, but also is firmly bonded with carpet back glue, has good waterproof performance, is firmly bonded with the carpet back glue, and is not easy to fall off. The carpet comprises a cloth layer and a back adhesive layer, wherein the back adhesive layer is made of the odor-purifying and anti-static carpet back adhesive; the cloth layer is made of one or more than two of bamboo fiber, acrylic fiber, nylon, terylene, wool, cotton and silk.
The experimental principle of this embodiment is: as shown in fig. 1, the carpet back adhesive 3 is contained in the container 1, the bayonet carpet 2 includes the U-shaped warp yarn unit 21 and the weft yarn unit 22, the carpet back adhesive 3 prepared in this embodiment is poured on the back of the bayonet carpet 2 in step S1, and the carpet back adhesive 3 first contacts the U-shaped warp yarn unit 21 of the bayonet carpet 2; referring to step S2, the carpet back 3 glue penetrates into the weft yarn units 22 from the gaps between adjacent U-shaped warp yarn units 21, and the carpet back glue contacting the U-shaped warp yarn units 21 also quickly infiltrates the U-shaped warp yarn units 21, and is dried to obtain the finished product in step S3, at this time, the carpet back glue 3 and the U-shaped warp yarn units 21 and the weft yarn units 22 of the bayonet carpet 2 are bonded to each other to form a complete glue body, so that the bonding property between the carpet back glue 3 and the bayonet carpet 2 is greatly improved, and the bayonet carpet 2 can be well prevented from falling.
The following specific examples are given as specific illustrations, and the selected raw materials are obtained from commercial sources or prepared by conventional methods, specifically as follows:
the nonionic thickener is selected from the group consisting of GE3030 sold by Luger chemical, USA;
the anti-settling and anti-water-diversion agent is selected from anti-settling and anti-water-diversion agent FK6621 sold in U.S. Ruger chemical;
the synergist is selected from synergist KT99 sold by Luger chemical of America;
the multifunctional auxiliary agent is selected from a multifunctional auxiliary agent RP-980 sold by Luge chemical in America;
the rapid penetrating agent is selected from rapid penetrating agent RT689 sold by Luger chemical of America;
the silane coupling agent is selected from silane coupling agent RH315 sold by Luger chemical USA;
the environment-friendly bactericide is selected from environment-friendly bactericide HY-AS2 sold by Luge chemical industry of America;
the environment-friendly mildew preventive is selected from an environment-friendly mildew preventive HY-MD7 sold by Luge chemical in America;
the antifoaming agent is selected from antifoaming agent ZT633 sold by Luge chemical USA;
the foam inhibitor is selected from foam inhibitor ZT635 sold by Luger chemical USA;
the hydrophobic agent is selected from the hydrophobic agents CO-188T sold by Luger chemical USA;
the synthetic latex is selected from synthetic latex prepared by Shenzhen energy-ready new material Limited, the main components are acrylic acid and EVA, and the synthetic latex can be purchased by the public;
the graphite is selected from graphite KS6 sold by Temi Gao Switzerland;
the conductive carbon black is selected from conductive carbon black PRINTEX2-B sold by German Germany Degussa company;
the carbon nanotubes are selected from carbon nanotubes cnt (lucan) sold by LG corporation of korea;
neoprene latex is commercially available from japan electro chemistry;
nitrile latex was purchased from electrochemical in japan;
styrene-butadiene latex was purchased from basf, germany;
the vulcanized latex is prepared by vulcanizing natural rubber;
the talcum powder, the mica powder and the heavy calcium carbonate are all purchased and obtained from the market.
The present invention is further illustrated in detail below with reference to tables and examples.
The odor-removing and anti-static carpet back adhesive composition comprises the following specific components in parts by weight:
TABLE 1 specific Components and parts by weight of Components in examples 1-16
The particle size of the conductive carbon black in example 1 was 100. mu.m, and the particle size of the conductive carbon black in other examples was 20 μm.
The invention also provides a comparison example of the carpet back adhesive composition, and the specific components and the weight parts of the components are shown in the following table 2:
TABLE 2 specific Components and parts by weight of Components in comparative examples 1-11
The preparation method of the carpet back glue of examples 1-16 and comparative examples 1-11 comprises the following steps:
adding the raw materials of the auxiliary agent part into water for mixing to obtain a fluid prefabricated product a;
uniformly mixing all raw materials of the latex part to obtain a prefabricated product b, and controlling the pH value of the prefabricated product b to be 8-10;
grinding the conductive carbon black by using a sand mill;
uniformly mixing the prefabricated product a and the prefabricated product b to form a prefabricated product c, adding the ground conductive carbon black and other raw materials of the functional additive part into the prefabricated product c, uniformly mixing, and adjusting the pH value to be 8-10.
Wherein, to ensure that the viscosities of the carpet back glues prepared in examples 1 to 16 and comparative examples 1 to 11 are substantially the same, the viscosities can be adjusted by water before adjusting the pH value, and then the pH of the carpet back glue can be adjusted by a pH adjusting agent.
Comparative example 12
A carpet backing, comparative example 12 differs from example 13 in that the latex portion is replaced with 610 parts by weight of EVA latex.
Comparative example 13
Comparative example 13 differs from example 13 in that the latex portion was replaced with 610 parts by weight of carboxylated styrene-butadiene latex.
Comparative example 14
A carpet backing, comparative example 14 differs from example 13 in that the latex portion was replaced with 610 parts by weight of denim latex, wherein the effective solid content of the denim latex was 61%, and the remaining 39% of the component was ammonia water.
The examples 1 to 16 and the comparative examples 1 to 14 were subjected to the following performance tests, and the test results are shown in Table 3.
First, water resistance test
(I) sample treatment
The carpet back glue of the examples 1 to 13 and the comparative examples 1 to 8 is made into a film with the same thickness, the part without bubbles and holes of the film is selected and cut into sample slices with flat edges of 3cm multiplied by 3cm, each sample is subjected to two groups of parallel experiments, each sample is marked, and the test results are averaged.
(II) test
And weighing and recording the sample, placing the sample in a beaker filled with water at room temperature, and recording the test starting time when the water surface is required to submerge the sample. After 7 days, the sample was taken out, wiped dry with filter paper, and weighed. And calculating the water-resistant weight gain percentage, and taking an average value, wherein the water-resistant weight gain percentage% = the weight difference before and after soaking multiplied by 100%/the initial weight.
Second, boil resistance test
(I) sample treatment
And treating the same water resistance test sample.
(II) test
The beaker is filled with water and put into a water bath kettle, the temperature is raised to 80 ℃, and the water bath is kept at a constant temperature. After weighing the sample, the sample was placed in a beaker in the water bath, and the time to start the test was recorded, requiring the water surface to submerge the sample. After 5 hours, the sample was taken out, and the surface of the sample was wiped dry with filter paper and weighed. And calculating the boiling-resistant weight gain percentage, and taking an average value, wherein the boiling-resistant weight gain percentage% = the weight difference before and after boiling multiplied by 100%/the initial weight.
Third, aging resistance test
(I) sample treatment
And treating the same water resistance test sample.
(II) test
After irradiating the sample with an ultraviolet lamp for 72 hours, the change of the sample was observed.
TABLE 3 results of Performance test of samples of examples 1 to 16 and comparative examples 1 to 14
Note that the above flexibility test temperature is room temperature.
As is clear from the combination of tables 1 to 3, the samples prepared in examples 1 to 16 and comparative examples 1 to 5 have no peculiar smell, are healthier to the body, and do not damage other characteristics of the product while improving the smell; the samples prepared in examples 1-16 have smooth and fine surfaces, are soft and elastic, can be manually bent for 180 degrees and are folded for multiple times, and quickly recover without obvious creases after being bent and placed for 1 day. The whole sample has almost no bubbles, so that the whole rubber surface is a complete whole, the mechanical strength is higher, and especially after the foam inhibitor is added, the microporous microbubbles are eliminated, and the whole rubber surface is more complete and attractive.
The samples prepared in examples 1-16 and comparative examples 1-5 have very good water resistance and boiling resistance, and after being soaked in water at normal temperature for 7 days or boiled in water at 80 ℃ for 5 hours, the appearance of the sample is not obviously changed, the aging resistance is good, and the sample is not obviously changed after being irradiated by an ultraviolet lamp for 72 hours.
The sample of comparative example 6 had a large reduction in the amount of synthetic latex, and although softness and bubble content were both satisfactory, the sample turned yellow significantly after being irradiated with an ultraviolet lamp for 72 hours, the mechanical properties decreased, and the aging resistance decreased significantly.
The sample of comparative example 7, in which the amount of vulcanized latex was greatly reduced, had significantly reduced softness and elasticity, and could be manually bent at 180 ° for more than 10 times with creases after bending; the water resistance and boiling resistance of the test specimens are significantly reduced.
The sample of comparative example 8 had no rapid penetration agent added thereto, and the flexibility, elasticity, water resistance, boiling resistance and aging resistance of the sample were all satisfactory.
The sample of comparative example 9, to which no water repellent was added, had a reduced water resistance and boiling resistance.
The sample of comparative example 10, in which the amount of vulcanized latex was greatly reduced and no hydrophobizing agent was added, had greatly reduced water resistance and boiling resistance, and further demonstrated that vulcanized latex and hydrophobizing agent had an obvious synergistic effect on water resistance and boiling resistance of carpet back glue. At the same time, the softness of the sample is also reduced.
The amount of ground calcium carbonate in the sample of comparative example 11 was significantly reduced and when the total amount of carpet back glue was unchanged, the void was filled with other materials. Since ground calcium carbonate is relatively inexpensive, reducing the amount of ground calcium carbonate results in an increase in the cost of the carpet backing adhesive. The flexibility, elasticity, water resistance, boiling resistance and aging resistance of the sample are also desirable.
In comparative example 12, the latex part was EVA latex, and the sample prepared therefrom had individual micropores, poor water resistance, and significant powdering phenomenon in both water resistance test and boiling resistance test, which seriously affected the use of the back adhesive, and the aging resistance of the sample was also significantly lower than that of the sample of the present invention.
In comparative example 13 in which the latex was partially prepared from a styrene-butadiene latex, the residual taste of the styrene-butadiene latex was not removed with the lapse of time, the odor was not reduced after leaving for 10 days, and the unremoved odor caused consumer troubles. In addition, the sample has a small amount of micropores, which can affect the mechanical strength of the whole gum, and the softness, water resistance and aging resistance of the sample are obviously inferior to those of the sample of the invention, thereby affecting the service life of the sample.
Comparative example 14 for the preservation of gum, so used a large amount of ammonia water, the ammonia water addition is large very easily causes the carpet gum finished product ammonia seriously exceeds standard, ammonia has strong irritability, after human body inhales to nose, throat and lung have irritability cough, short breath, asthma, etc.; death can be caused by choking due to edema of the larynx; pulmonary edema can occur, leading to death. The gum with high-concentration ammonia water gradually enters eyes, and if emergency measures are not taken, corneal ulcer and perforation can be caused, further intraocular inflammation is caused, and finally eyeball atrophy and blindness are caused. The latex portion of the sample of comparative example 14 used a gum of Yamania, which was poor in aging resistance, and the sample was significantly yellowed, hardened, brittle, degraded in mechanical properties, pulverized in the back gum, and dropped in the colloidal particles after being irradiated with an ultraviolet lamp for 72 hours. In practical use, the back glue can turn yellow after being used for about half a year, can obviously become hard and brittle after being used for about one year, and the situation of falling colloidal particles occurs, so that the quality of the back glue cannot be guaranteed, the service life of the carpet is shortened, and the requirements of consumers cannot be met. In addition, the sample prepared in comparative example 14 has many pores, and the mechanical properties thereof are significantly affected.
Fourth, testing the thermal insulation
The carpet backings of examples 1-16 were placed on a heat plate at 80 ℃ for half an hour without significant heating of the upper surface of the carpet backing; in particular, in examples 8 and 12-16, the heating plate did not heat up significantly after 1 hour of heating.
Fifth, carpet depilation test
The carpet backadhesives of examples 3 to 16, comparative examples 1 to 5 and comparative examples 8, 9 and 11 were applied to the bayonet carpets and the amount of hair removed from the hand-bayonet back carpets of the present invention was tested according to the method for measuring the amount of hair removed in the national standard GB/T27729-2011 "hand-bayonet back carpets". The specific data are shown in Table 4.
Wherein, the depilation quantity of the unit area is calculated according to the following formula:
in the formula:
omega-amount of hair removed per unit area per area in grams per square meter (g/m)2) To the accuracy of 0.01g/m2；
m-amount of hair removed per area in grams (g) to the nearest 0.01 g;
s-area of sample per area in square millimeters (mm)2）。
The average of the hairiness per unit area of the three areas is taken as the hairiness per unit area of the sample, and the hairiness per unit area is measured to be 0.01g/m2。
TABLE 4 amount of depilation of the tufted carpets coated with the carpet backsize of examples 3 to 13, comparative examples 1 to 5 and comparative examples 8, 9, 11
As can be seen from table 4, the carpets prepared from the samples of comparative examples 8, 11 had significant dehairing, with no rapid penetrant added to the sample of comparative example 8 and a reduced amount of ground calcium carbonate in the sample of comparative example 11, fully demonstrating the effect of the rapid penetrant and ground calcium carbonate on the sample. In contrast, the carpet prepared from the samples of examples 3-16 had a much reduced amount of lint, indicating that the bristles of examples 3-16 were able to adhere strongly to the underside of the carpet, were not prone to lint, and had much improved adhesion to the carpet. The samples of comparative examples 1-5 had varying amounts of graphite, conductive carbon black and carbon nanotubes added, and the carpet backing adhesive of comparative example 9 had no hydrophobizing agent added, but no significant change in carpet lint.
Sixth, adhesion and Strength testing of carpet backing Compounds
The bayonet carpets coated with the carpet backsize of examples 3 to 16, comparative examples 1 to 5 and comparative examples 8, 9 and 11 were subjected to a machine washing resistance test, the washing machine tub was a plastic tub, the machine washing time was half an hour, and after half an hour, it was checked whether there was glue on the plastic tub. The specific test results are shown in table 5.
TABLE 5 adhesion and Strength of bayonet carpets coated with the carpet backsize of examples 3-13, comparative examples 1-5, and comparative examples 8, 9, 11
As can be seen from Table 5, the carpets prepared in examples 3 to 16 and comparative examples 1 to 5 showed no significant adhesion to the plastic bucket after half an hour of machine washing and no significant reduction in the adhesion to the bayonet carpet, and thus the carpets of examples 3 to 16 showed good adhesion and strength. The carpet backing of comparative example 9 had no hydrophobicizing agent added, the water resistance of the carpet backing was reduced and the carpet could be easily run off during machine washing.
Carpet odor test
The carpet backadhesives of examples 13-16, comparative examples 1-5, and comparative examples 12-14 were applied to carpets and tested for odor in the carpet of the present invention according to the odor test method of leather in the closed environment of national standard QB/T2725-2005, measurement of odor of leather. The specific data are shown in Table 6.
The following are reference standards for carpet odor:
TABLE 6 odor of carpets coated with the carpet backsize of examples 13-16, comparative examples 1-5, and comparative examples 12-14
As can be seen from table 6, the samples prepared in examples 13 to 16 and comparative examples 1 to 5 hardly feel odor at both normal temperature and high temperature, wherein slight odor comes from the odor of carbon itself, and is harmless to the human body, and the latex portion has no odor, and has a good odor-removing effect, thereby improving the environmental protection property of the carpet and the user experience. The carpet coated with the carpet backsize of comparative example 12, while not noticeable in the dry state at high temperatures, had a noticeable odor in the wet state, and for the wet south, such carpet also resulted in an unpleasant experience for some users who were more sensitive to odor. The carpets coated with the carpet backings of comparative examples 13 and 14 had strong, unpleasant odors both in the normal temperature wet state and in the high temperature dry state, and were hardly appreciated by the users.
Eight, carpet antistatic performance test
The carpet backings of examples 1-2, 13 and comparative examples 1-5 were applied to a carpet and tested for surface resistivity using a surface resistance tester sold by the victory instrument under model number ST-385. The data are shown in Table 7.
Standard of surface resistance value of carpet product:
surface resistance value greater than 1011Static electricity is easily generated at omega;
surface resistance value of 108 -1010Certain antistatic performance is realized between omega;
surface resistance value of 106 -108The antistatic performance is better when the voltage is between omega;
surface resistance value of 104 -106The antistatic performance is optimal when the voltage is between omega;
watch with clockA surface resistance value of 104Has a certain conductivity under omega, and belongs to conductor and semiconductor materials.
TABLE 7 surface resistivity of carpet backsize coated with examples 1-2, 13 and comparative examples 1-5
As can be seen from table 7, the difference between example 1 and example 2 is that the particle sizes of the conductive carbon black are different, and from the test results, the conductive carbon black with two particle sizes can achieve good conductive effect, but the conductive performance of the conductive carbon black with small particle size is better. In addition, it can be seen from the results of comparative example 2 and example 13 that the addition of other raw materials does not affect the antistatic effect of the carpet back glue.
The amounts of graphite, conductive carbon black and carbon nanotubes added to the carpet back adhesives of comparative examples 1-3 and example 13 are sequentially increased, and correspondingly, the surface resistivity of the carpet back adhesives of comparative examples 1-3 and example 13 is sequentially increased, and the antistatic effect of the carpet back adhesive is sequentially improved. Therefore, it can be seen that the addition of the graphite, the conductive carbon black and the carbon nanotubes is beneficial to enhancing the antistatic performance of the carpet, and in the test range, the larger the weight parts of the graphite, the conductive carbon black and the carbon nanotubes are, the better the antistatic performance is, wherein the example 13 can achieve the best antistatic performance.
Comparative example 4, in which no graphite and conductive carbon black were added, and comparative example 5, in which no carbon nanotubes were added, showed that the carbon nanotubes had a greater effect on the antistatic performance of the carpet than the combination of graphite and conductive carbon black, as compared to comparative example 4, comparative example 5, and comparative example 13.
From comparative example 1 to comparative example 2 and from comparative example 2 to comparative example 3, the surface resistivity of the carpet is reduced by 2 orders of magnitude, and the carpet of comparative example 2 and comparative example 3 has a certain antistatic performance, so that when the amounts of graphite, conductive carbon black and carbon nanotubes reach a certain degree, the amount of graphite, conductive carbon black and carbon nanotubes is increased, the antistatic performance of the carpet is not obviously enhanced, and the antistatic performance of the carpet is not obviously improved.
It is well known that conductive carbon black is expensive and, in combination with the above analysis and practice, it can be seen that the carpet of example 13 is the best choice, which achieves a relative balance between cost and antistatic properties, most advantageous for carpet backsize and carpet manufacture and processing.
To more intuitively demonstrate the superior performance of the carpet back adhesive prepared according to the present invention, as shown in fig. 2, a schematic diagram of the surface resistivity of the carpet back adhesive coated with the carpet back adhesive prepared according to comparative example 2 was tested at an air humidity of more than 75%; FIG. 3 is a graphical representation of the test surface resistivity at air humidity less than 70% for carpet backsize coated with comparative example 4; FIG. 4 is a graphical representation of the test surface resistivity at air humidity greater than 75% for carpet backsize coated with comparative example 5; by comparing fig. 2, fig. 3 and fig. 4, it can be clearly seen that the carpet back adhesive prepared by the invention has obvious and excellent antistatic performance, and greatly improves the practicability of the carpet.
Nine, carpet softness Change test
Along with the continuous improvement of the living standard of people, the quality requirement on each product is higher, in order to meet the environmental requirements under the conditions of south and north and different humidity, the applicant also devotes to research the influence of the carpet back adhesive along with the change of temperature and humidity and researches the carpet back adhesive with the same softness all the year round, so that the softness of the carpet coated with the carpet back adhesive is further tested.
Tests have shown that the carpet backing adhesive prepared in comparative example 12 becomes significantly stiff at temperatures below 20 c, and in particular has little elasticity at temperatures down to 10-15 c, and is not compared. From the test results in Table 3, it can be seen that the carpet backing made in comparative example 13 is relatively stiff and therefore not comparable. The carpet back adhesive prepared in comparative example 14 was relatively good, and the carpet back adhesive prepared in example 13 was even more excellent in all properties, so that further comparative studies were made on the carpet back adhesives prepared in example 13 and comparative example 14.
The carpet back glue of example 13 and comparative example 14 was coated on a carpet, the carpet was placed in a constant temperature and humidity test chamber sold by jey-TH-80, jieya instruments & equipment limited, dongguan, and the humidity in the constant temperature and humidity test chamber was controlled at 25%, 50%, and 90%, respectively, so that the carpet was maintained at each temperature for 10 minutes, and then taken out to rapidly detect the softness of the carpet at different temperatures, thereby obtaining a curve of the softness of the carpet changing with temperature. The specific test results are shown in fig. 5.
The ideal carpet has little influence on the softness due to the change of the humidity and the temperature of the external environment, and the softness is similar to that in south and north, and similar to that in four seasons. Considering the actual material situation, a certain fluctuation is inevitably generated around 0 ℃, as shown in the ideal curve in fig. 4, the softness tends to increase with the increase of temperature as a whole, but the increase is not large, and the influence of temperature is small. The softness curve of the carpet is basically unchanged along with the temperature change under different humidities, and the influence of the humidity is not obvious.
The carpet of example 13 showed insignificant changes in softness with temperature below 0 c and above 10 c and significant increases between 0-10 c when humidity was unchanged in the cross direction, indicating that the carpet of example 13 was more easily deformed between 0-10 c, but the softness of the carpet of example 13 as a whole was closer to ideal regardless of temperature and humidity.
The softness of the carpet of comparative example 14 was substantially unchanged below 5 c when the temperature was unchanged, and although the temperature had little effect on the carpet, the softness of the carpet was very low at 25%, 40% or 90% humidity, and particularly the carpet was stiff at 25 c humidity. When the temperature is continuously increased from 5 ℃, the softness of the carpet of the comparative example 14 is continuously and greatly improved, and at the moment, the back glue of the carpet loses the shaping effect, so that the carpet can deform, and the attractiveness and the using effect of the carpet are influenced.
Both the carpet of example 13 and comparative example 14 became soft with increasing humidity when the temperature was constant as seen in the machine direction. The carpet of example 13 did not change much in softness at each humidity and softness was consistently close to the desired softness. However, the carpet of comparative example 14 not only varied the softness more than the carpet of example 13 at each level of humidity, but the softness deviated from the ideal as the humidity increased.
In conclusion, the carpet of the invention has better softness, and is not easy to change according to the change of temperature or humidity, so the carpet of the invention is not only soft, but also not easy to deform, and has more practical effect.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The odor-free antistatic carpet back adhesive composition is characterized in that raw materials comprise a latex part, an auxiliary agent part and a functional additive part;
the latex part comprises the following components in parts by weight:
200 parts of synthetic latex
200-300 parts of vulcanized latex;
the auxiliary agent part comprises the following components in parts by weight:
5-10 parts of silane coupling agent
2-5 parts of defoaming agent
2-5 parts of a water repellent agent;
the functional additive part comprises the following components in parts by weight:
5-10 parts of graphite
5-10 parts of conductive carbon black
0.5-1 part of carbon nano tube.
2. The odor-free antistatic carpet backing composition according to claim 1, wherein the particle size of the conductive carbon black is 20-25 μm.
3. The odor-reducing antistatic carpet backing composition of claim 1, wherein the latex portion further comprises the following components in parts by weight:
10-20 parts of neoprene latex
10-20 parts of butyronitrile latex.
4. The odor-free antistatic carpet backing composition according to claim 1, wherein the latex part further comprises 50-100 parts by weight of styrene-butadiene latex, and the auxiliary part further comprises 5-10 parts by weight of a fast-penetrating agent.
5. The odor-free antistatic carpet backing composition of claim 1, wherein the functional additive portion further comprises the following components in parts by weight:
100 portions of heavy calcium carbonate and 200 portions of sodium bicarbonate
100 portions of filler
50-100 parts of mica powder;
the filler is one or more than two of talcum powder, washing kaolin, calcined kaolin, light calcium carbonate, titanium dioxide and lithopone;
the fineness of the filler is 800-1000 meshes; the selected fineness of the mica powder is more than 2000 meshes; the fineness of the heavy calcium carbonate is 100-200 meshes.
6. The odor-reducing antistatic carpet backing composition of claim 1, wherein said adjunct moiety further comprises from 2 to 5 parts by weight of a suds suppressor.
7. The odor-reducing antistatic carpet backing composition of claim 1, wherein the adjunct moiety further comprises the following components in parts by weight:
5-10 parts of anti-settling and anti-water-diversion agent
3-7 parts of a synergistic agent;
preferably, the auxiliary agent part also comprises the following components in parts by weight:
3-7 parts of nonionic thickening agent
2-5 parts of a multifunctional additive.
8. The odor-free antistatic carpet back adhesive is characterized by comprising the odor-free antistatic carpet back adhesive composition as defined in any one of claims 1 to 7, and water, wherein the water accounts for more than 50 parts by weight, and the pH value of the odor-free antistatic carpet back adhesive is adjusted to be 8-10 by a pH adjusting agent.
9. The method for preparing the odor-free antistatic carpet back adhesive of claim 8, comprising the steps of:
adding the raw materials of the auxiliary agent part into water for mixing to obtain a fluid prefabricated product a;
uniformly mixing all raw materials of the latex part to obtain a prefabricated product b, and controlling the pH value of the prefabricated product b to be 8-10;
grinding the conductive carbon black by using a sand mill;
uniformly mixing the prefabricated product a and the prefabricated product b to form a prefabricated product c, adding the ground conductive carbon black and other raw materials of the functional additive part into the prefabricated product c, uniformly mixing, and adjusting the pH value to be 8-10.
10. A carpet comprising a cloth layer and a backsize layer, the backsize layer made from the odor purifying and static electricity preventing carpet backsize of claim 8; the cloth layer is made of one or more than two of bamboo fiber, acrylic fiber, nylon, terylene, wool, cotton and silk.
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