CN113736392B - Odor-removing antistatic carpet back adhesive composition, back adhesive, preparation method of back adhesive and carpet - Google Patents
Odor-removing 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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- C08K2201/002—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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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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 adhesive, and discloses an odor-removing and antistatic carpet back adhesive composition, back adhesive, a preparation method thereof and a carpet, wherein the odor-removing and antistatic carpet back adhesive composition comprises a latex part, an auxiliary agent part and a functional additive part; the latex portion 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 defoamer and 2-5 parts of hydrophobing 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 conductive performance, 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 odor-removing antistatic carpet back glue composition, back glue, a preparation method of the carpet back glue and a carpet.
Background
Carpets are one of the traditional arts and crafts in the world with a long history, and the carpets can be classified into pure wool carpets, blended carpets, chemical fiber carpets, plastic carpets, grass-woven carpets and the like according to the material classification. The hand-made carpet is made by knitting wool in Australia and New Zealand, and is made by knitting, flattening, slicing, washing, throwing, repairing and the like in front and back and the whole set of the traditional hand-made procedures, and has compact structure, firmness and solidness.
The floor carpet has the advantages of reducing noise, improving foot feel, preventing slipping, preventing air pollution and the like due to heat insulation and decoration effects, so that the use of the carpet is becoming more and more popular. In order to prevent the carpet from slipping, a back adhesive is generally arranged on the carpet.
When carpets are paved in certain places, the carpets are required to have an antistatic function, for example, in laboratories with higher requirements on electrical indexes, if static electricity generated by pedestrians walking on the carpets is not conducted away, the static electricity easily causes abnormal operation of experimental equipment; further, static electricity generated on carpets can reduce the feeling of use experience for pedestrians, such as in the home, especially when the winter climate is dry.
The Chinese patent application with publication number of CN109322084A discloses an antistatic 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, antistatic liquid is arranged in the yarn soaking box, yarn enters the yarn soaking box after being output from the yarn output mechanism and contacts with the antistatic 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 100-120 ℃, the drying time is 25-30 seconds, then the yarn enters the carpet weaving machine for weaving, and the antistatic liquid consists of dodecanol, potassium phosphide, sodium hydroxide and water.
The antistatic carpet in the scheme needs soaking and drying steps during preparation, and a yarn soaking box and a drying mechanism are arranged between the carpet weaving machine and the yarn output mechanism, so that the carpet is very inconvenient to prepare.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide an odor-removing antistatic carpet back adhesive composition which has better conductive performance, is beneficial to the conductivity of a carpet after being used on the carpet, and enables the carpet to have better antistatic performance.
In order to achieve the first purpose, the invention provides the following technical scheme: an odor-free antistatic carpet back adhesive composition comprises a latex part, an auxiliary agent part and a functional additive part;
the latex portion comprises the following components in parts by weight:
200-300 parts of synthetic latex
200-300 parts of vulcanized latex;
the auxiliary agent part comprises the following components in parts by weight:
silane coupling agent 5-10 parts
2-5 parts of defoaming agent
2-5 parts of a hydrophobic agent;
the functional additive part comprises the following components in parts by weight:
graphite 5-10 parts
Conductive carbon black 5-10 parts
0.5-1 part of carbon nano tube.
The carpet back adhesive obtained by adopting the components has better conductive performance, and can effectively enhance the conductive performance and antistatic performance of the carpet after being used for preparing the carpet. The surface resistivity of the carpet prepared by the carpet back adhesive is tested, and the result shows that the surface resistivity of the carpet can reach 10 5 The carpet has the optimal antistatic performance, thereby well proving that the carpet back adhesive has outstanding antistatic function.
In addition, the carpet back adhesive is not easy to generate peculiar smell, and can better permeate into the carpet, so that the carpet back adhesive can bond the bottom surface of the carpet and adjacent hairs or threads in the carpet, a complete adhesive surface is formed, the adhesion with the carpet is greatly improved, and the carpet is not easy to fall off when used for a gunny hand 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, elasticity and elongation of the carpet back adhesive are improved, and the carpet back adhesive is not easy to break; the odor of the carpet back adhesive can be greatly reduced, and the carpet back adhesive is more environment-friendly. The function principle of the silane coupling agent as the carpet back adhesive reinforcing agent is that the silane coupling agent has two groups; one group may be bound 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 at the bonding interface, and the bonding strength of the glue is greatly improved. The foam killer can quickly eliminate bubbles of the carpet back adhesive, so that the adhesive surface formed at the back 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, thereby prolonging the service life of the carpet back adhesive. The graphite, the conductive carbon black and the carbon nano tube are all excellent conductors, and the three components are combined to greatly enhance the conductive performance of the carpet back adhesive without using expensive graphene to achieve the purpose of improving the conductive performance, so that the carpet back adhesive has obvious effect of reducing the cost.
Tests prove that the carpet back adhesive has better stability at the pH value of 8-10, and is not easy to deposit or delaminate.
Further, the conductive carbon black has a particle diameter of 20 to 25 μm.
In 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 conductive performance of the conductive carbon black. Through tests, when the particle size of the conductive carbon black is between 20 and 25 mu m, the conductive performance of the carpet back adhesive is better, and the carpet back adhesive is more suitable for preparing carpets.
Further, the latex portion further comprises the following components in parts by weight:
neoprene latex 10-20 parts
10-20 parts of nitrile latex.
The neoprene latex and the butyronitrile latex can well increase the mechanical strength of the carpet back adhesive, and are beneficial to prolonging the service life of the carpet back adhesive.
Further, 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 rapid penetrant.
The addition of the styrene-butadiene latex is beneficial to improving the attaching performance of the carpet back adhesive and the carpet bottom surface, so that the carpet has better anti-skid performance. The quick penetrating agent can obviously improve the penetrating property of the carpet back adhesive, so that the adhesion of the carpet back adhesive to the carpet is better. The styrene-butadiene latex and the quick penetrating agent enable the carpet back adhesive 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 fast penetrating agent is an acetylenic diol nonionic surfactant.
The alkyne diol nonionic surfactant has the functions of wetting, defoaming, improving dispersibility, improving flow and leveling property and the like, and can effectively reduce surface tension, control foam and stabilize consistency and viscosity when being applied to the invention; compared with the traditional surfactant, the alkyne diol nonionic surfactant has lower water sensitivity and better matching with other components, so that the prepared carpet back adhesive has good adhesion with the carpet and is less prone to hair falling.
Further, the functional additive part also comprises the following components in parts by weight:
100-200 parts of heavy calcium carbonate
100-200 parts of filler
50-100 parts of mica powder;
the filler is one or more than two of talcum powder, water-washed kaolin, calcined kaolin, light calcium carbonate, titanium dioxide and lithopone;
the fineness of the filler is 800-1000 meshes; the 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 adhesion 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 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 insulated wire and the covering power of the carpet back adhesive. Especially, talcum powder has lubricity, can improve the hand feeling of carpet gum, improves the rebound resilience of a carpet finished product, prevents the gum from being back-glued due to overlarge humidity of the carpet finished product, and improves the leveling state of the gum.
The mica powder has good acid and alkali resistance chemical stability, can not change in water and air, can improve the storage stability of carpet back glue and prolong the service life of the back glue.
Through the combination of the fineness of the heavy calcium carbonate, the fineness of the mica powder and the fineness of the filler, the carpet back adhesive can be quickly permeated into the carpet, and the fineness and smoothness of the carpet back adhesive can be ensured.
Further, the adjunct portion further comprises from 2 to 5 parts by weight of a suds suppressor.
The invention can obviously improve micro-needle eye bubbles of the carpet back adhesive by adding the foam inhibitor, does not generate micro-bubbles during carpet sizing, does not generate needle eye holes after the back adhesive is dried, has higher mechanical strength and better overall aesthetic property.
Further, the auxiliary part also comprises the following components in parts by weight:
5-10 parts of anti-sinking water diversion agent
3-7 parts of synergistic agent.
According to the invention, the anti-sedimentation water-splitting agent is added into the raw material components, so that powder sedimentation and gel separation can be well prevented; the addition of the synergistic agent can lead the functional additive to be more uniform and easier to disperse, the carpet back glue is not easy to agglomerate when being stored, and the latex and the powder in the functional additive are not easy to separate. The anti-sinking water diversion agent and the synergistic agent have synergistic effect, so that the preservation time of the carpet back adhesive can be greatly prolonged, the batch production and storage of the carpet back adhesive are facilitated, and the production efficiency is improved.
Further, the active ingredients of the anti-settling water-splitting agent are polyamide and polyester; the synergistic agent is a high molecular block copolymer.
The polyamide and the polyester, which are functional groups and are mutually aggregated, can improve the viscosity of the carpet back adhesive structure through the action of the polyamide and the polyester and can well limit the sedimentation of powder in the functional additive. Compared with classical dispersion and wetting auxiliary agents, the high molecular block copolymer has strong adsorption effect on the surface of the powder in the functional additive, obviously improves the wetting effect on the particles in the powder of the functional additive, and has excellent deflocculating effect and prevents the dispersed particles from being reagglomerated. Through the cooperation of the two components, the stability of the carpet back adhesive can be better improved, and the storage time of the carpet back adhesive can be prolonged.
Further, the auxiliary agent part also comprises the following components in parts by weight:
3-7 parts of nonionic thickener
2-5 parts of multifunctional auxiliary agent.
The nonionic thickener can well increase the consistency of carpet back glue; 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-removing antistatic carpet back adhesive, which has better conductive performance, is used for conducting electricity on a carpet, and ensures that the carpet has better antistatic performance.
In order to achieve the second purpose, the invention provides the following technical scheme:
the odor-removing antistatic carpet back adhesive comprises the odor-removing antistatic carpet back adhesive composition in the scheme, water, wherein the weight of the water is more than 50 parts, and the pH value interval of the odor-removing antistatic carpet back adhesive is 8-10 through a pH regulator.
The odor-removing antistatic carpet back adhesive prepared from the odor-removing antistatic carpet back adhesive composition has better conductive performance, and can effectively enhance the conductive performance and antistatic performance of the carpet after being used for preparing the carpet.
The invention aims at providing a preparation method of the odor-removing antistatic carpet back adhesive, which is simple, can greatly improve the adhesive force of the carpet back adhesive through the adhesive coating powder, has higher production efficiency, and can improve the 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 antistatic carpet back adhesive in the scheme comprises the following steps of:
adding the raw materials of the auxiliary agent part into water, and mixing to obtain a fluid-like prefabricated product a;
uniformly mixing the raw materials of the latex part to obtain a preform b, and controlling the pH value of the preform b to be 8-10;
grinding the conductive carbon black by a sand mill;
and (3) 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 to 8-10.
After the prefabricated product a and the prefabricated product b are uniformly mixed to form the prefabricated product c, the raw materials of the functional additive are added, the powder in the functional additive is coated by latex to form a state of 'rubber coating powder', the adhesive property of the rubber is better, and the adhesive force is further 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 carpet back adhesive has the effect of improving the conductive performance.
Further, in the step b of uniformly mixing the raw materials of the latex portion to obtain the preform, an emulsifier is added in an amount of 1% by weight based on the total weight of the latex portion.
The emulsifier has good emulsifying effect, and is more beneficial to the rapid and uniform mixing of the raw materials.
The fourth object of the invention is to provide a carpet which has good electric conductivity and antistatic property and is firmly bonded with the carpet back adhesive.
In order to achieve the fourth purpose, the invention provides the following technical scheme: the carpet comprises a cloth layer and a back adhesive layer, wherein the back adhesive layer is made of the odor-removing antistatic 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 back adhesive layer included in the carpet is strong in antistatic performance, the generation of static electricity is reduced, the binding force is also strong, the cloth layer is well limited, the wool is removed, the waterproof performance is high, the carpet back adhesive is not easy to hydrolyze and remove powder, and the service life of the carpet can be greatly prolonged. The carpet has the advantages of good environmental protection performance, no pungent smell and beautiful appearance. When the carpet is degummed, the carpet back adhesive is directly supplemented at the degummed part, so that the gap can be filled, the aim of secondary repair is fulfilled, and the carpet is not required to be replaced.
In summary, the invention has the following beneficial effects:
1. the carpet back adhesive composition obtained by the components of the invention is not easy to generate peculiar smell and has better conductive performance, after the carpet back adhesive is used for preparing a carpet, the conductive performance and the antistatic performance of the carpet can be effectively enhanced, and the carpet back adhesive can be better permeated into the carpet, so that the bonding of the carpet back adhesive to the bottom surface of the carpet and the mutual bonding of adjacent hairs or threads in the carpet can be realized, a complete adhesive surface is formed, the bonding performance with the carpet is greatly improved, and the carpet back adhesive is not easy to fall off when being used for a gun-hand carpet.
2. The carpet back adhesive obtained by the components is used in the 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, elasticity and elongation of the carpet back adhesive are improved, and the carpet back adhesive is not easy to break; the odor of the carpet back adhesive can be greatly reduced, and the carpet back adhesive is more environment-friendly. The function principle of the silane coupling agent as the carpet back adhesive reinforcing agent is that the silane coupling agent has two groups; one group may be bound 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 at the bonding interface, and the bonding strength of the glue is greatly improved. The foam killer can quickly eliminate bubbles of the carpet back adhesive, so that the adhesive surface formed at the back 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, thereby prolonging the service life of the carpet back adhesive. The graphite, the conductive carbon black and the carbon nano tube are all excellent conductors, and the three components are combined to greatly enhance the conductive performance of the carpet back adhesive without using expensive graphene to achieve the purpose of improving the conductive performance, so that the carpet back adhesive has obvious effect of reducing the cost. Tests prove that the carpet back adhesive has better stability at the pH value of 8-10, and is not easy to deposit or delaminate.
3. In 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 conductive performance of the conductive carbon black. Through tests, when the particle size of the conductive carbon black is between 20 and 25 mu m, the conductive performance of the carpet back adhesive is better, and the carpet back adhesive is more suitable for preparing carpets.
4. The addition of the styrene-butadiene latex is beneficial to improving the attaching performance of the carpet back adhesive and the ground, so that the carpet has better anti-skid performance. The quick penetrating agent can obviously improve the penetrating property of the carpet back adhesive, so that the adhesion of the carpet back adhesive to the carpet is better. The styrene-butadiene latex and the quick penetrating agent enable the carpet back adhesive 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 fineness of the heavy calcium carbonate, the fineness of the mica powder and the fineness of the filler, the carpet back adhesive can be quickly permeated into the carpet, and the fineness and smoothness of the carpet back adhesive can be ensured.
6. After the prefabricated product a and the prefabricated product b are uniformly mixed to form the prefabricated product c, the raw materials of the functional additive are added, the powder in the functional additive is coated by latex to form a state of 'rubber coating powder', the adhesive property of the rubber is better, and the adhesive force is further 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 carpet back adhesive has the effect of improving the conductive performance.
7. The back adhesive layer included in the carpet is strong in antistatic performance, the generation of static electricity is reduced, the binding force is also strong, the cloth layer is well limited, the wool is removed, the waterproof performance is high, the carpet back adhesive is not easy to hydrolyze and remove powder, and the service life of the carpet can be greatly prolonged. The carpet has the advantages of good environmental protection performance, no pungent smell and beautiful appearance. When the carpet is degummed, the carpet back adhesive is directly supplemented at the degummed part, so that the gap can be filled, the aim of secondary repair is fulfilled, and the carpet is not required to be replaced.
Drawings
FIG. 1 is a schematic illustration of the use of a odor-free antistatic carpet backing adhesive;
FIG. 2 is a schematic representation of the surface resistivity of a carpet backing coated with the carpet backing of comparative example 2 when the air humidity is greater than 75%;
FIG. 3 is a schematic representation of the surface resistivity of a carpet backing coated with the carpet backing of comparative example 4 when the air humidity is less than 70%;
FIG. 4 is a schematic representation of the surface resistivity of a carpet backing coated with the carpet backing of comparative example 5 when the air humidity is greater than 75%;
fig. 5 is a graph of softness as a function of temperature for carpets coated with the carpet backings of example 13, comparative example 14, respectively.
Reference numerals: 1. a container; 2. gun-shaped carpet; 21. u-shaped warp yarn units; 22. a weft yarn unit 22; 3. carpet back glue.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be made clearly and completely with reference to the tables in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art under the premise of understanding the inventive concept of the present invention are all within the scope of the present invention.
In order to facilitate understanding of the technical scheme of the invention, the odor-free antistatic carpet back adhesive of the invention is described in further detail below, but is not taken as a protection scope defined by the invention.
The embodiment of the invention discloses an odor-free antistatic carpet back adhesive composition, which comprises a latex part, an auxiliary agent part and a functional additive part;
wherein the latex portion comprises the following components in parts by weight:
200-300 parts of synthetic latex
200-300 parts of vulcanized latex;
wherein the auxiliary agent part comprises the following components in parts by weight:
silane coupling agent 5-10 parts
2-5 parts of defoaming agent
2-5 parts of a hydrophobic agent;
wherein the functional additive part comprises the following components in parts by weight:
graphite 5-10 parts
Conductive carbon black 5-10 parts
0.5-1 part of carbon nano tube.
The carpet back adhesive obtained by adopting the components has better conductive performance, and can effectively enhance the conductive performance and antistatic performance of the carpet after being used for preparing the carpet.
Preferably, the water is deionized water, and impurities are not easy to introduce.
Preferably, the particle size of the conductive carbon black is 20-25 mu m, 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 portion further comprises the following components in parts by weight:
neoprene latex 10-20 parts
10-20 parts of nitrile latex
The mechanical strength of the carpet back adhesive can be well increased, and the service life of the carpet back adhesive is prolonged.
Preferably, 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 rapid penetrating agent, so that the carpet back adhesive can better penetrate into the carpet, the cohesiveness of the carpet is improved, and the carpet is not easy to be dehaired.
Preferably, the rapid permeation agent is an acetylenic diol nonionic surfactant, which can effectively reduce the surface tension, control the foam, and stabilize the consistency and the viscosity.
Preferably, the functional additive part further comprises the following components in parts by weight:
100-200 parts of heavy calcium carbonate
100-200 parts of filler
50-100 parts of mica powder;
the filler is one or more of talcum powder, water-washed kaolin, calcined kaolin, light calcium carbonate, titanium white powder and lithopone;
the fineness of the filler is 800-1000 meshes; the 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 fineness of the heavy calcium carbonate, the fineness of the mica powder and the fineness of the filler, the carpet back adhesive can be quickly permeated into the carpet, and the fineness and smoothness of the carpet back adhesive can be ensured.
Preferably, the auxiliary agent part also comprises 2-5 parts by weight of foam inhibitor, which is favorable for removing tiny needle eye bubbles of the carpet back adhesive and further improves the mechanical strength of the carpet back adhesive.
Preferably, the auxiliary part further comprises the following components in parts by weight:
5-10 parts of anti-sinking water diversion agent
3-7 parts of synergistic agent.
The active ingredients of the anti-settling water-splitting agent are polyamide and polyester; the synergistic agent is a high molecular block copolymer. The anti-sinking water diversion agent and the synergistic agent have synergistic effect, so that the preservation time of the carpet back adhesive can be greatly prolonged, the batch production and storage of the carpet back adhesive are facilitated, and the production efficiency is improved.
Preferably, the auxiliary part further comprises the following components in parts by weight:
3-7 parts of nonionic thickener
2-5 parts of multifunctional auxiliary agent.
The nonionic thickener is polyurethane thickener; the multifunctional auxiliary agent is preferably an organic alcohol amine. The nonionic thickener can well increase the consistency of carpet back glue; 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 an odor-removing antistatic carpet back adhesive, which comprises the odor-removing antistatic carpet back adhesive composition in the scheme, and further comprises water, wherein the water is more than 50 parts by weight, and the pH value interval of the odor-removing antistatic carpet back adhesive is 8-10 through a pH regulator.
The carpet has better conductive performance, is conductive after being used on the carpet, and has better antistatic performance.
The invention also discloses a preparation method of the odor-free antistatic carpet back adhesive in the scheme, which comprises the following steps:
adding the raw materials of the auxiliary agent part into water, and mixing to obtain a fluid-like prefabricated product a;
uniformly mixing the raw materials of the latex part to obtain a preform b, and controlling the pH value of the preform b to be 8-10;
grinding the conductive carbon black by a sand mill;
And (3) 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 to 8-10.
In step b, the raw materials of the latex part are uniformly mixed to obtain a preform, and an emulsifier accounting for 1% of the total weight of the latex part is added.
The preparation method of the embodiment is simple, the adhesive force of the carpet back adhesive can be greatly improved through the adhesive powder, and the production efficiency is higher.
The carpet disclosed by the invention has the advantages of good electric conductivity, good antistatic performance, firm adhesion with the carpet back adhesive, good waterproof performance, firm adhesion with the carpet back adhesive and difficult hair falling. The carpet comprises a cloth layer and a back adhesive layer, wherein the back adhesive layer is made of the odor-removing antistatic 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, a carpet back adhesive 3 is contained in a container 1, a gun carpet 2 comprises a U-shaped warp yarn unit 21 and a weft yarn unit 22, the carpet back adhesive 3 prepared in the embodiment is poured on the back of the gun carpet 2 in step S1, and the carpet back adhesive 3 is contacted with the U-shaped warp yarn unit 21 of the gun carpet 2 first; referring to step S2, the carpet back 3 glue permeates into the weft yarn unit 22 from the gap between the adjacent U-shaped warp yarn units 21, and meanwhile, the carpet back glue contacting the U-shaped warp yarn units 21 also quickly infiltrates into the U-shaped warp yarn units 21, and the finished product in step S3 is obtained after drying, at this time, the carpet back glue 3 and the U-shaped warp yarn units 21 and weft yarn units 22 of the gun-shaped carpet 2 are bonded with each other to form a complete colloid, the adhesiveness between the carpet back glue 3 and the gun-shaped carpet 2 is greatly improved, and further, the gun-shaped carpet 2 can be well prevented from falling down.
The following is a specific description of specific examples, wherein the raw materials are commercially available or are prepared by conventional methods, and the specific examples are as follows:
the nonionic thickener is selected from nonionic thickeners GE3030 sold in U.S. Lu Gehua;
the anti-settling water-splitting agent is selected from anti-settling water-splitting agents FK6621 sold in U.S. Lu Gehua;
the synergist is selected from a synergist KT99 sold in U.S. Lu Gehua;
the multifunctional auxiliary agent is selected from multifunctional auxiliary agents RP-980 sold in U.S. Lu Gehua;
the rapid osmotic agent is selected from those sold in U.S. Lu Gehua, RT689;
the silane coupling agent is selected from silane coupling agent RH315 sold in U.S. Lu Gehua;
the environment-friendly bactericide is selected from environment-friendly bactericides HY-AS2 sold in the United states of America Lu Gehua;
the environment-friendly mildew preventive is selected from environment-friendly mildew preventive HY-MD7 sold in U.S. Lu Gehua;
the defoamer is selected from defoamer ZT633 sold in U.S. Lu Gehua;
the suds suppressor is selected from suds suppressor ZT635 sold in us Lu Gehua;
the hydrophobing agent is selected from hydrophobing agents CO-188T sold in U.S. Lu Gehua;
the synthetic latex is prepared from Shenzhen quasi-energy new material, and the main components of the synthetic latex are acrylic acid and EVA, and the synthetic latex can be purchased by the public;
The graphite is selected from graphite KS6 sold by Switzerland Density company;
the conductive carbon black is selected from conductive carbon black PRINTEX2-B sold by Desoxhlet corporation of Germany;
the carbon nanotubes are selected from carbon nanotubes CNT (LUCAN) sold by LG company in korea;
neoprene latex is commercially available from japan electrochemical;
nitrile latex is commercially available from japan electrochemical;
styrene-butadiene latex was purchased from basf, germany;
the vulcanized latex is prepared by vulcanizing natural rubber;
talcum powder, mica powder and heavy calcium carbonate are all purchased in the market.
The invention is described in further detail below in connection with tables and examples.
The odor-removing antistatic carpet back adhesive composition comprises the following specific components in parts by weight:
TABLE 1 specific Components and parts by weight of the 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. Mu.m.
The invention also provides a comparative example of a carpet backing composition, the specific components and parts by weight of the components are shown in Table 2 below:
TABLE 2 specific Components and parts by weight of the components in comparative examples 1 to 11
A process for preparing carpet backings of examples 1-16 and comparative examples 1-11 comprising the steps of:
adding the raw materials of the auxiliary agent part into water, and mixing to obtain a fluid-like prefabricated product a;
Uniformly mixing the raw materials of the latex part to obtain a preform b, and controlling the pH value of the preform b to be 8-10;
grinding the conductive carbon black by a sand mill;
and (3) 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 to 8-10.
Wherein, to ensure that the adhesive consistencies of the carpet backings prepared in examples 1-16 and comparative examples 1-11 are substantially the same, the adhesive consistencies can be adjusted by water before adjusting the pH value, and then the pH of the carpet backings can be adjusted by a pH regulator.
Comparative example 12
A carpet backing, comparative example 12 differs from example 13 in that the latex portion was replaced with 610 parts by weight EVA latex.
Comparative example 13
A carpet backing, 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 a Mooney latex, wherein the Mooney gum has an effective solids content of 61% and the remaining 39% of the component is ammonia.
Performance tests were conducted on examples 1 to 16 and comparative examples 1 to 14, and the test methods are as follows, and the test results are shown in Table 3.
1. Water resistance test
Sample processing
The carpet backings of examples 1-13 and comparative examples 1-8 were made into equal thickness films, the bubble-free, hollow portions of the films were selected, cut into 3cm x 3cm edge-flattened sample sections, two parallel runs were made for each sample, a mark was made on each sample, and the test results averaged.
(II) test
After weighing and recording the sample, the sample is placed in a beaker filled with water at room temperature, the water surface is required to be over the sample, and the test starting time is recorded. After 7 days, the sample was taken out, the surface moisture of the sample was wiped off with filter paper, and weighed. The percentage of water-resistant weight gain was calculated, averaged,% water-resistant weight gain =difference in weight before and after soaking x 100%/initial weight.
2. Boiling resistance test
Sample processing
And (5) treating the same water resistance test sample.
(II) test
The beaker is filled with water and placed in a water bath kettle, the temperature is raised to 80 ℃ and the water bath is kept at constant temperature. After weighing the sample, placing the sample in a beaker in the water bath, requiring the water surface to overflow the sample, and recording the starting test time. After 5 hours, the sample was taken out, the surface moisture of the sample was wiped off with filter paper, and weighed. The percentage of poaching weight gain was calculated, averaged%poaching weight gain =weight difference before and after poaching x 100%/initial weight.
3. Aging resistance test
Sample processing
And (5) treating the same water resistance test sample.
(II) test
After the sample was irradiated with an ultraviolet lamp for 72 hours, the sample was observed for changes.
TABLE 3 results of Performance test of samples of examples 1-16 and comparative examples 1-14
Note that the above softness test temperature was 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 are odorless, healthier to the body, and do not impair other characteristics of the product while improving the odor; the samples prepared in examples 1-16 were smooth and fine in surface, soft and elastic, and capable of being manually folded 180 degrees and folded in half for many times, and after being folded and placed for 1 day, the samples were quickly restored to have no obvious crease. The whole sample has almost no bubbles, so that the whole rubber surface is a complete whole, the mechanical strength is higher, especially after the foam inhibitor is added, the micro-pore micro-bubbles are eliminated, and the whole rubber surface is more complete and attractive.
The samples prepared in examples 1 to 16 and comparative examples 1 to 5 are excellent in both water resistance and boiling resistance, and after 7 days of water immersion at normal temperature or 5 hours of water boiling at 80 ℃, the appearance of the samples is not significantly changed, and the samples are excellent in ageing resistance and also have no significantly changed after 72 hours of irradiation with an ultraviolet lamp.
The synthetic latex in the sample of comparative example 6 was greatly reduced, and although softness and bubble content were satisfactory, the sample became significantly yellow after irradiation with an ultraviolet lamp for 72 hours, and mechanical properties and aging resistance were significantly reduced.
The amount of vulcanized latex in the sample of the comparative example 7 is greatly reduced, the flexibility and the elasticity of the sample are obviously reduced, the sample can be manually bent for 180 degrees and more than 10 times, and folds are formed after bending; the water resistance and boiling resistance of the test specimen are significantly reduced.
The sample of comparative example 8 was not added with a rapid osmotic agent, and the sample was also satisfactory in terms of softness, elasticity, water resistance, boiling resistance and aging resistance.
The sample of comparative example 9 was free of the hydrophobic agent, and the water resistance and boiling resistance of the sample were lowered.
The amount of vulcanized latex is greatly reduced in the sample of the comparative example 10, and the water resistance and boiling resistance of the sample are greatly reduced without adding the hydrophobic agent, so that obvious synergistic effect of the vulcanized latex and the hydrophobic agent on the water resistance and boiling resistance of the carpet back adhesive is proved. At the same time, the softness of the test specimen is also reduced.
The amount of heavy calcium carbonate in the sample of comparative example 11 was significantly reduced, and when the total carpet back adhesive was unchanged, it was necessary to fill the void with other materials. Since heavy calcium carbonate is relatively inexpensive, reducing the amount of heavy calcium carbonate results in an increase in the cost of carpet backings. The specimen is also preferably excellent in flexibility, elasticity, water resistance, boiling resistance and aging resistance.
The latex part in comparative example 12 is EVA latex, and the prepared sample has individual micropores, has poor water resistance, has obvious pulverization phenomenon during water resistance test and boiling resistance test, can seriously influence the use of back glue, and has ageing resistance obviously lower than that of the sample.
The latex of comparative example 13 was partially formulated with a hydroxy styrene-butadiene latex, and the residual taste of the styrene-butadiene latex was not removed over time, and the odor remained unabated after 10 days of storage, and the removal of the non-removed odor was annoying to the consumer. In addition, the sample has a small number of micropores, so that the mechanical strength of the whole back adhesive is affected, and the softness, the water resistance and the ageing resistance are obviously inferior to those of the sample provided by the invention, so that the service life of the sample is affected.
Comparative example 14 for preserving and storing the gum, a large amount of ammonia water is used, and the addition amount of the ammonia water is very easy to cause serious exceeding of the ammonia in the carpet gum finished product, the ammonia has strong irritation, and after the human body inhales, the ammonia has irritating cough, shortness of breath, asthma and the like on the nose, the throat and the lung; can die due to choking caused by laryngeal oedema; pulmonary edema can occur, causing death. The back adhesive with high concentration ammonia water gradually enters eyes, if no first aid measures are taken, corneal ulcers and perforation can be caused, and further intraocular inflammation is caused, and finally eyeball atrophy and blindness are caused. The latex portion of comparative example 14 was made of a moonia gum, the aging resistance of the sample was poor, and the sample was significantly yellowing, hardening, embrittling, mechanical properties were lowered, back-powdering and colloidal particles falling off after irradiation with an ultraviolet lamp for 72 hours. When in actual use, the back adhesive turns yellow about half a year, becomes obviously hard and brittle about one year, has the condition of falling colloidal particles, cannot guarantee the quality of the back adhesive, shortens the service life of the carpet, and cannot meet the demands of consumers. In addition, the sample hole obtained in comparative example 14 was also large, and the mechanical properties thereof were significantly affected.
4. Thermal insulation test
The carpet backings of examples 1-16 were placed on a heated plate at 80 ℃ for half an hour without significant heating of the upper surface of the carpet backings; in particular, examples 8 and 12 to 16, the heating plate did not significantly heat up even after heating for 1 hour.
5. Carpet dehairing amount test
Carpet backings of examples 3-16, comparative examples 1-5 and comparative examples 8, 9, 11 were coated on a gun carpet and the amount of depilation of the gun carpet of the present invention was tested according to the depilation test method in the national standard GB/T27729-2011 "hand gun gum carpet". The specific data are shown in Table 4.
Wherein, the unhairing amount per unit area is calculated according to the following formula:
wherein:
omega-the amount of hair removed per area in grams per square meter (g/m) 2 ) Accurate to 0.01g/m 2 ；
m-the amount of hair removed per area in grams (g), to the nearest 0.01g;
s-the area of the sample per zone in square millimeters (mm) 2 ）。
The average value of the depilation amount per unit area of the three areas is taken as the depilation amount per unit area of the sample, and the depilation amount per unit area is precisely 0.01g/m 2 。
TABLE 4 amount of hair removal for gun-tile carpets coated with carpet backings of examples 3-13, comparative examples 1-5, and comparative examples 8, 9, 11
As can be seen from Table 4, the carpets prepared from the samples of comparative examples 8 and 11 showed significant loss of hair, wherein the sample of comparative example 8 was not added with the rapid osmotic agent, and the amount of heavy calcium carbonate in the sample of comparative example 11 was reduced, which fully demonstrated the effect of the rapid osmotic agent and heavy calcium carbonate on the sample. In contrast, the samples of examples 3-16 produced carpets with significantly less hair removal, indicating that the bristles of examples 3-16 were able to bond strongly to the underside of the carpet, and were less prone to hair removal, and significantly improved adhesion to the carpet. Unequal amounts of graphite, conductive carbon black and carbon nanotubes were added to the samples of comparative examples 1-5, and no hydrophobic agent was added to the carpet backing of comparative example 9, but the amount of carpet dehairing was not significantly changed.
6. Adhesion and strength testing of carpet back sizing
The gun-punched carpets coated with the carpet backings of examples 3 to 16, comparative examples 1 to 5 and comparative examples 8, 9 and 11 were subjected to machine washing test, the plastic drums were selected for the washing machine, and after half an hour, the plastic drums were checked for the presence of the adhesive. The specific test results are shown in Table 5.
TABLE 5 adhesion and strength of gun carpets coated with carpet backings 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 had no significant adhesive on the plastic drum after half an hour of machine washing, nor did the adhesive on the gun-punched carpets significantly decreased, and thus it can be seen that the adhesive force and strength of examples 3 to 16 were excellent. The carpet back adhesive of comparative example 9 was free of the addition of a hydrophobic agent, and the carpet back adhesive was degraded in water resistance, and the carpet was easily dropped during machine washing.
7. Carpet odor test
Carpet backings of examples 13-16, comparative examples 1-5 and comparative examples 12-14 were applied to carpets and the odor of the carpets of the present invention was tested according to the method for determining the odor of leather in an isolated environment in the national standard QB/T2725-2005 determination of leather odor. 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 backings of examples 13-16, comparative examples 1-5, and comparative examples 12-14
As can be seen from Table 6, the prepared samples of examples 13 to 16 and comparative examples 1 to 5 hardly feel smell at normal temperature and high temperature, wherein the slight smell is derived from the smell of carbon itself, is harmless to human body, has no peculiar smell in latex part, has good smell removing effect, and improves the environmental protection property of carpet and the experience of users. The carpet coated with the carpet backing of comparative example 12, while having no noticeable odor in the high temperature dry state, had a noticeable odor in the wet state, and for wet south, such carpet also resulted in a poor experience for some users who were relatively sensitive to odor. Carpets coated with the carpet backings of comparative examples 13 and 14 had strong and unpleasant odors in both the normal temperature wet state and the high temperature dry state, and were hardly favored by users.
8. Carpet antistatic performance test
The carpet backings of examples 1-2, 13 and comparative examples 1-5 were coated on carpets and the surface resistivity of the carpet backings of the present invention was tested using a surface resistance tester sold under the model ST-385 by victory instruments. The specific data are shown in Table 7.
Standard of surface resistance of carpet product:
a surface resistance value of more than 10 11 Static electricity is very easy to generate when omega is formed;
surface resistance value is 10 8 -10 10 When the temperature is between omega, the antistatic performance is certain;
surface resistance value is 10 6 -10 8 The antistatic performance is better when the temperature is between omega;
surface resistance value is 10 4 -10 6 The anti-static performance is optimal when the temperature is between omega;
when the surface resistance value reaches 10 4 The conductive material has a considerable conductivity below omega, and belongs to conductor and semiconductor materials.
TABLE 7 surface resistivity of carpet backings coated with examples 1-2, 13 and comparative examples 1-5
It can be seen from table 7 that the difference between the examples 1 and 2 is that the particle sizes of the conductive carbon blacks are different, and from the test results, both the conductive carbon blacks with small particle sizes can achieve good conductive effect, but the conductive performance of the conductive carbon blacks with small particle sizes is better. In addition, it can be seen from the results of comparative examples 2 and 13 that the addition of other materials does not affect the antistatic effect of the carpet backing.
The amounts of graphite, conductive carbon black and carbon nanotubes added to the carpet backing adhesives of comparative examples 1 to 3 and example 13 were sequentially increased, and accordingly, the surface resistivities of the carpet backing adhesives of comparative examples 1 to 3 and example 13 were sequentially increased, and the antistatic effect of the carpet backing adhesives was sequentially improved. Therefore, it can be seen that the addition of graphite, conductive carbon black and carbon nanotubes is beneficial to enhancing the antistatic performance of the carpet, and in the test range, the larger the weight parts of the three, the better the antistatic performance, wherein the best antistatic performance can be achieved in example 13.
Comparative example 4 without addition of graphite and conductive carbon black, comparative example 5 without addition of carbon nanotubes, and comparative examples 4, 5 and 13 show that the effect of carbon nanotubes on antistatic properties of carpets is greater, even greater, than the combined effect of graphite and conductive carbon black.
From comparative examples 1 to 2 and from comparative examples 2 to 3, the surface resistivity of the carpet was reduced by 2 orders of magnitude, and the carpets of comparative examples 2 and 3 also had only a certain antistatic property, so that it could be concluded that when the amounts of graphite, conductive carbon black and carbon nanotubes reached a certain level, the amounts of graphite, conductive carbon black and carbon nanotubes were increased, the antistatic property of the carpet was not significantly enhanced, and the improvement of the antistatic property of the carpet was not significantly observed.
As is generally known, the conductive carbon black is expensive, and the carpet of example 13 is the best choice in combination with the above analysis and practical situation, which can achieve a relative balance between cost and antistatic properties, and is most beneficial to the production and processing of carpet backings and carpets.
In order to more intuitively embody the excellent performance of the carpet back adhesive prepared by the 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 in comparative example 2 when the air humidity is more than 75% is shown; FIG. 3 is a schematic representation of the surface resistivity of a carpet backing coated with the carpet backing of comparative example 4 when the air humidity is less than 70%; FIG. 4 is a schematic representation of the surface resistivity of a carpet backing coated with the carpet backing of comparative example 5 when the air humidity is greater than 75%; by comparing the figures 2, 3 and 4, the carpet back adhesive prepared by the invention has obvious and excellent antistatic performance, and the practicability of the carpet is greatly improved.
9. Carpet softness Change test
Along with the continuous improvement of the living standard of people, the quality requirements on various products are higher, in order to meet the environmental requirements of the north and south and under different humidity, the applicant is also dedicated to researching the influence of the carpet back adhesive along with the change of temperature and humidity, and researching the carpet back adhesive with softness of four seasons, such as one, so that the carpet back adhesive coated with the carpet back adhesive is further tested.
Tests have shown that the carpet backings prepared in comparative example 12 are significantly stiffer at temperatures below 20 c, and more so are less elastic, especially at temperatures down to 10-15 c, and thus are not compared. As can be seen from the test results of Table 3, the carpet backing made in comparative example 13 was harder and therefore was not compared. The carpet backings of comparative example 14 were relatively good, and the carpet backings of example 13 were significantly better in all properties, so that further comparative studies were conducted on the carpet backings of example 13 and comparative example 14.
The carpet back adhesive of example 13 and comparative example 14 was coated on the carpet, the carpet was put into a constant temperature and constant humidity test box sold by Dongguan Jieyu instruments and devices Co., ltd., model JY-TH-80, and the humidity in the constant temperature and constant humidity test box was controlled to 25%, 50% and 90% respectively, so that the carpet was kept at each temperature for 10 minutes, and then the carpet was taken out to rapidly detect softness of the carpet at different temperatures, thereby obtaining a curve of softness of the carpet varying with temperature. The specific test results are shown in fig. 5.
The ideal carpet has little influence on softness due to the change of the humidity and the temperature of the external environment, and has softness similar to that of one in the north and south and similar to that of one in four seasons. Considering the actual material situation, a certain fluctuation is inevitably generated at about 0 ℃, such as the curve in the ideal state in fig. 4, the softness tends to increase with the increase of temperature, but the increase is not large, and the influence of temperature is small. The curve of the softness of the carpet with temperature change under different humidity is basically unchanged, and the influence of the humidity is not obvious.
The softness of the carpet of example 13 was not significantly changed with temperature below 0 ℃ and above 10 ℃ when viewed in the cross-machine direction, but increased significantly between 0-10 ℃ indicating that the carpet of example 13 was relatively easily deformed between 0-10 ℃, but overall the softness of the carpet of example 13 was relatively close to ideal at any temperature and humidity.
The softness of the carpet of comparative example 14 was substantially unchanged below 5 ℃ when the temperature was unchanged, although the temperature had little effect on the carpet, but the softness of the carpet was very low regardless of whether the humidity was 25%, 40% or 90%, especially when the humidity was 25 ℃. After 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 carpet back glue loses the shaping function, and the carpet can deform, so that the attractiveness and the use effect of the carpet are affected.
The carpets of example 13 and comparative example 14 both became soft with increasing humidity when the temperature was unchanged, as seen in the machine direction. The carpet of example 13 had little variation in softness at each humidity and softness was consistently near the desired softness. However, the carpet of comparative example 14 not only had a greater degree of softness change at each humidity than the carpet of example 13, but also had greater softness at each humidity than ideal.
In summary, the softness of the carpet of the present invention is less likely to change due to changes in temperature or humidity, and the softness is better, so that the carpet of the present invention is not only soft, but also less likely to deform, and has a more practical effect.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (9)
1. The odor-removing antistatic carpet back adhesive composition is characterized in that the raw materials comprise a latex part, an auxiliary agent part and a functional additive part;
the latex portion comprises the following components in parts by weight:
the synthetic latex is prepared from 200-300 parts of acrylic acid and EVA (ethylene vinyl acetate) by Shenzhen market quasi-energy new material Co-efficient
200-300 parts of vulcanized latex;
the auxiliary agent part comprises the following components in parts by weight:
silane coupling agent 5-10 parts
2-5 parts of defoaming agent
2-5 parts of hydrophobizing agent
5-10 parts of quick penetrating agent
2-5 parts of foam inhibitor;
the functional additive part comprises the following components in parts by weight:
Graphite 5-10 parts
Conductive carbon black 5-10 parts
0.5-1 part of carbon nano tube
100-200 parts of heavy calcium carbonate
100-200 parts of filler
50-100 parts of mica powder;
the filler is one or more than two of talcum powder, water-washed kaolin, calcined kaolin, light calcium carbonate, titanium white and lithopone.
2. The odor-free antistatic carpet backing composition of claim 1 wherein the conductive carbon black has a particle size of 20-25 μm.
3. The odor-free antistatic carpet backing composition of claim 1 wherein said latex portion further comprises the following components in parts by weight:
neoprene latex 10-20 parts
10-20 parts of nitrile latex.
4. The odor-free antistatic carpet back adhesive composition of claim 1 wherein said latex portion further comprises 50-100 parts by weight of styrene-butadiene latex.
5. The odor-free antistatic carpet back adhesive composition of claim 1, wherein the filler is 800-1000 mesh; the fineness of the mica powder is more than 2000 meshes; the fineness of the heavy calcium carbonate is 100-200 meshes.
6. The odor-free antistatic carpet backing composition of claim 1 wherein the auxiliary portion further comprises the following components in parts by weight:
5-10 parts of anti-sinking water diversion agent
3-7 parts of synergistic agent;
3-7 parts of nonionic thickener
2-5 parts of multifunctional auxiliary agent, wherein the multifunctional auxiliary agent is organic alcohol amine.
7. The odor-removing antistatic carpet back adhesive is characterized by comprising the odor-removing antistatic carpet back adhesive composition according to any one of claims 1-6, and further comprising water, wherein the water is more than 50 parts by weight, and the pH value range of the odor-removing antistatic carpet back adhesive is 8-10 through a pH regulator.
8. The method for preparing the odor-free antistatic carpet back adhesive of claim 7, comprising the steps of:
adding the raw materials of the auxiliary agent part into water, and mixing to obtain a fluid-like prefabricated product a;
uniformly mixing the raw materials of the latex part to obtain a preform b, and controlling the pH value of the preform b to be 8-10;
grinding the conductive carbon black by a sand mill;
and (3) 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 to 8-10.
9. Carpet comprising a cloth layer and a backing layer made of the odor-free antistatic carpet backing of claim 7; 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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| CN1095392A (en) * | 1994-02-04 | 1994-11-23 | 天津津澳乳胶制品有限公司 | Foamed coating for fabric liner |
| US5877244A (en) * | 1995-08-23 | 1999-03-02 | Flow Polymers, Inc. | Latex rubber additive and latex rubber compounds |
| US5741885A (en) * | 1995-08-25 | 1998-04-21 | Baxter International Inc. | Methods for reducing allergenicity of natural rubber latex articles |
| WO2003046099A1 (en) * | 2001-11-30 | 2003-06-05 | Auckland Uniservices Limited | Water-based adhesive compositions |
| CN1508207A (en) * | 2002-12-19 | 2004-06-30 | 华南热带农业产品加工设计研究所 | Natural fiber carpet back-lining latex mixing |
| CN101189291A (en) * | 2005-04-13 | 2008-05-28 | R.T.范德比尔特公司 | Composition and method for curing latex compounds |
| WO2017123090A1 (en) * | 2016-01-14 | 2017-07-20 | Radium Foam B.V. | Vulcanization accelerator composition for latex foam rubber |
| CN106750618B (en) * | 2017-03-23 | 2019-04-23 | 上海金香乳胶制品有限公司 | A kind of latex and the method that latex product is prepared using the latex |
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