Antistatic polyurethane foam and preparation method thereof

Abstract

The invention relates to antistatic polyurethane foam and a preparation method thereof, and belongs to the technical field of high polymer materials. The antistatic polyurethane foam is prepared by taking polyether polyol and isocyanate as main materials, adding copper nanowires, an antistatic aid and a foaming aid, mixing and foaming, the copper nanowires are taken as an electrostatic conduction network framework, the antistatic aid is prepared into an intermediate a through a click addition reaction of triallylamine and methyl thioglycolate, and the intermediate a is taken as a foaming aid through a reaction of triallylamine and methyl thioglycolate. The preparation method comprises the following steps: preparing an intermediate a from copper nanowires, carrying out amine-ester exchange on a methyl ester structure introduced by n-alkylamine and the intermediate a to prepare an intermediate b, carrying out quaternization on the intermediate b by 3-chloropropanol, and promoting dispersion of the copper nanowires by an antistatic aid through chelation modification to form an organic-inorganic transition electrostatic conduction network so as to improve the antistatic effect. And meanwhile, a polyurethane macromolecule-antistatic auxiliary agent-copper nanowire cross-linked network is formed, so that the antistatic stability is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of polymer materials, and in particular relates to an antistatic polyurethane foam and a preparation method thereof. Background Art

[0002] Polyurethane foam is widely used in electronics, packaging, automotive, and other fields due to its lightweight, high resilience, sound absorption, and heat insulation properties. However, the insulating properties of its polymer chains lead to static electricity accumulation, which can easily cause electronic component breakdown and dust absorption.

[0003] Existing antistatic technologies mainly rely on inorganic conductive fillers or organic antistatic agents. Among them, common inorganic antistatic agents include carbon black, metal powder, etc. These antistatic agents have high rigidity and are easily peeled off with the deformation of the foam, resulting in deterioration of the antistatic effect. In addition, the inorganic antistatic agents are not sufficiently dispersible in the polyurethane foaming system, making it difficult to form a uniform conductive network, exacerbating the deterioration of mechanical properties. The use of surface treatment technology, such as silane surface treatment, has improved the dispersibility of inorganic antistatic agents to a certain extent, but the surface treatment layer forms a conductive barrier, resulting in a decrease in the antistatic effect, which seriously restricts the antistatic effect of the inorganic antistatic agent; common organic antistatic agents, such as quaternary ammonium salt antistatic agents, have high antistatic effects, but they are prone to excessive migration and loss during high temperature or long-term storage, resulting in an increase in resistivity and insufficient antistatic life. Especially in the electronics and packaging fields, there is a great storage safety risk. Summary of the Invention

[0004] In order to solve the technical problems mentioned in the background technology, the purpose of the present invention is to provide an antistatic polyurethane foam and a preparation method thereof.

[0005] The purpose of the present invention can be achieved through the following technical solutions: An antistatic polyurethane foam is made of polyether polyol and isocyanate as main materials, copper nanowires, antistatic additives and foaming additives mixed and foamed; The polyether polyol in the main material uses glycerol as an initiator, preferably has a room temperature viscosity not higher than 1000 mPa·s, isocyanate is TDI, and the -NCO / -OH molar ratio in the main material is 0.7-0.8.

[0006] The amount of copper nanowires added is 1.6-2.1 wt% of the main material, and the amount of antistatic additive added is 0.65-0.82 wt% of the main material.

[0007] The foaming aid at least includes a foaming agent, a foam stabilizer, a cell opener and a catalyst.

[0008] Wherein, the antistatic auxiliary agent is prepared by the following method: Step A1: Mix triallylamine, photosensitizer and anhydrous acetone, add methyl thioglycolate under dry nitrogen atmosphere, and use 300-400mW / cm 2 Irradiate with ultraviolet light and stir to react for 4.5-5.5 hours. After the reaction is completed, remove acetone by rotary evaporation to obtain intermediate a; In the reaction of step A1 above, the ratio of triallylamine, methyl thioglycolate, photosensitizer, and anhydrous acetone is 10 mmol: 30 mmol: 15-20 mg: 35-40 mL. Under ultraviolet irradiation, triallylamine and methyl thioglycolate undergo a click addition reaction. The specific route is as follows:

[0009] Step A2: Mix intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene, raise the temperature to 85-100°C under a dry nitrogen atmosphere, and stir to react for 8-10 hours. After the reaction is completed, remove the toluene by rotary evaporation to obtain intermediate b; In the reaction of step A2 above, the ratio of intermediate a, n-alkylamine, trimethylaluminum, and anhydrous toluene is 10 mmol: 33-35 mmol: 0.1-0.12 g: 60-80 mL. Under the promotion of trimethylaluminum, n-alkylamine and intermediate a undergo an amine transesterification reaction. The specific route is as follows:

[0010] Preferably, the n-alkylamine is one of n-pentylamine and n-octylamine.

[0011] Step A3: Mix intermediate b, 1-chloropropanol, potassium iodide, and dioxane, raise the temperature to 80-90°C, and stir to react for 15-20 hours. After the reaction is completed, remove the dioxane by rotary evaporation under reduced pressure. Wash the substrate with deionized water, remove the aqueous phase, and vacuum dry to obtain an antistatic additive. In the reaction of step A3 above, the ratio of intermediate b, 1-chloropropanol, potassium iodide and dioxane is 10 mmol: 18-22 mmol: 0.2-0.3 g: 100-130 mL. 1-chloropropanol undergoes quaternization reaction with the tertiary amine structure of intermediate b. The specific route is as follows:

[0012] A preparation method of antistatic polyurethane foam, specifically comprising: Step S1: Stir and disperse polyether polyol, copper nanowires, antistatic agent and foaming agent, and preheat to 25-30° C. to prepare a white material; Step S2: adding isocyanate to the white material and mixing evenly; injecting the mixture into a mold and foaming at 80° C. for 10 minutes; and curing the discharged material at room temperature for 48 hours to obtain antistatic polyurethane foam.

[0013] Beneficial effects of the present invention: The present invention adopts the synergistic effect of copper nanowires and antistatic additives to give polyurethane foam an excellent and stable antistatic function. The copper nanowires have excellent electrical conductivity, serve as an electrostatic conductive network skeleton, have good mechanical flexibility, and are highly compatible with polyurethane foam. The antistatic additive is prepared by a click addition reaction between triallylamine and methyl thioglycolate to prepare an intermediate a, and then an amine ester exchange is carried out between n-alkylamine and the methyl ester structure introduced by the intermediate a to prepare an intermediate b. Finally, the intermediate b is quaternized with 3-chloropropanol to prepare the antistatic additive. Compared with the prior art, the sulfide structure in the antistatic additive molecule forms a strong chelate with the nitrogen-containing group, and is compounded with the copper nanowires through the chelate reaction. Its branched alkyl chain amide structure It has good compatibility with polyurethane, plays a modifying and dispersing role, and under the chelation effect, the quaternary ammonium cation structure fits tightly with the copper nanowires, which is conducive to the formation of an organic-inorganic transition electrostatic conductive network; the introduction of active hydroxyl groups during the quaternization process can participate in the foaming of polyurethane, thereby forming a polyurethane macromolecule-antistatic additive-copper nanowire cross-linked network. Under double anchoring, the antistatic component is not easy to migrate, and has an extremely stable high-temperature resistant and long-lasting antistatic effect; in addition, the alkyl chain amide structure is interspersed at the cross-linking node, forming an in-situ toughening of the cross-linking node, improving the bonding toughness of the soft polyurethane chain and the rigid copper nanowire, and effectively improving the foam's anti-deformation stability. During the deformation process, the copper nanowire is not easy to peel off and can stably conduct static electricity. DETAILED DESCRIPTION

[0014] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] Example 1: Preparation of antistatic polyurethane foam, specifically as follows: (1) Preparation of antistatic additives Step A1: Triallylamine, photosensitizer and anhydrous acetone were mixed, and methyl thioglycolate was added under a dry nitrogen atmosphere. 2 The reaction was stirred under ultraviolet irradiation for 5.5 h. DMPA (benzoin dimethyl ether) was used as the photosensitizer, and the dosage ratio of triallylamine, methyl thioglycolate, photosensitizer and anhydrous acetone was 10 mmol: 30 mmol: 15 mg: 35 mL. After the reaction was completed, acetone was removed by rotary evaporation to obtain intermediate a.

[0016] Step A2: Mix intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene, raise the temperature to 85°C under a dry nitrogen atmosphere, and stir to react for 10 hours, wherein the n-alkylamine is n-pentylamine, and the amount ratio of intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene is 10 mmol:33 mmol:0.1 g:60 mL. After the reaction, remove the toluene by rotary evaporation to obtain intermediate b.

[0017] Step A3: Mix the intermediate b, 1-chloropropanol, potassium iodide and dioxane, heat to 80°C and stir to react for 20 hours, wherein the amount ratio of the intermediate b, 1-chloropropanol, potassium iodide and dioxane is 10 mmol: 18 mmol: 0.2 g: 100 mL. After the reaction is completed, the dioxane is removed by vacuum rotary evaporation, the substrate is washed with deionized water, the aqueous phase is removed and vacuum dried to obtain an antistatic additive.

[0018] (2) Preparation of antistatic polyurethane foam Polyether polyol and isocyanate were used as the main ingredients for foaming, and the -NCO / -OH molar ratio was controlled to be 0.7. Among them, the polyether polyols were all SMN-3050A raw materials with glycerol as the initiator, with a calibrated room temperature viscosity of 750mPa·s and a hydroxyl value of 56mgKOH / g. The isocyanates were all TDI (toluene diisocyanate); the copper nanowires were all commercially available multi-twinned copper nanowire powders, with an addition amount of 2.1wt% of the main ingredient; the antistatic additives were The agent is made by ourselves in this implementation, and the addition amount is 0.65wt% of the main material; the foaming aids specifically include: the foaming agent is water, and the addition amount is 4.7wt% of the main material; the foam stabilizer is L-580 type auxiliary agent available on the market, and the addition amount is 0.75wt% of the main material; the pore opening agent is KF-28 type auxiliary agent available on the market, and the addition amount is 0.58wt% of the main material; the catalyst is T-12 type auxiliary agent available on the market, and the addition amount is 0.17wt% of the main material.

[0019] Step S1: polyether polyol, copper nanowires, antistatic agent and foaming agent are dispersed at a high speed of 3600 rpm and stirred for 5 minutes, and the dispersed material is preheated to 30° C. to obtain a white material.

[0020] Step S2: adding isocyanate to the white material and stirring at 6000 rpm for 20 seconds, injecting the mixture into a mold and foaming at 80° C. for 10 minutes, and curing the discharged material at room temperature for 48 hours to obtain antistatic polyurethane foam.

[0021] Example 2: Preparation of antistatic polyurethane foam, specifically as follows: (1) Preparation of antistatic additives Step A1: Triallylamine, photosensitizer and anhydrous acetone were mixed, and methyl thioglycolate was added under a dry nitrogen atmosphere. 2The reaction was stirred under ultraviolet irradiation for 5.2 h. DMPA (benzoin dimethyl ether) was used as the photosensitizer, and the dosage ratio of triallylamine, methyl thioglycolate, photosensitizer and anhydrous acetone was 10 mmol: 30 mmol: 18 mg: 40 mL. After the reaction was completed, acetone was removed by rotary evaporation to obtain intermediate a.

[0022] Step A2: Mix intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene, raise the temperature to 95°C under a dry nitrogen atmosphere, and stir to react for 9 hours, wherein the n-alkylamine is n-pentylamine, and the amount ratio of intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene is 10mmol:35mmol:0.11g:70mL. After the reaction, remove toluene by rotary evaporation to obtain intermediate b.

[0023] Step A3: Mix the intermediate b, 1-chloropropanol, potassium iodide and dioxane, heat to 85°C and stir to react for 18 hours, wherein the amount ratio of the intermediate b, 1-chloropropanol, potassium iodide and dioxane is 10 mmol: 20 mmol: 0.3 g: 120 mL. After the reaction is completed, the dioxane is removed by vacuum rotary evaporation, the substrate is washed with deionized water, the aqueous phase is removed and vacuum dried to obtain an antistatic additive.

[0024] (2) Preparation of antistatic polyurethane foam Polyether polyol and isocyanate were used as the main ingredients for foaming, with the -NCO / -OH molar ratio controlled at 0.76. The polyether polyols were all SMN-3050A raw materials with glycerol as the initiator, with a calibrated room temperature viscosity of 750mPa·s and a hydroxyl value of 56mgKOH / g. TDI (toluene diisocyanate) was used for the isocyanates. Commercially available multi-twinned copper nanowire powder was used for the copper nanowires, with an addition amount of 1.8wt% of the main ingredient. Antistatic agents were used. The auxiliary agent is self-made by this embodiment, and the addition amount is 0.79wt% of the main material; the foaming auxiliary agent specifically includes: the foaming agent is water, and the addition amount is 5.2wt% of the main material; the foam stabilizer is commercially available L-580 type auxiliary agent, and the addition amount is 0.8wt% of the main material; the pore opening agent is commercially available KF-28 type auxiliary agent, and the addition amount is 0.62wt% of the main material; the catalyst is commercially available T-12 type auxiliary agent, and the addition amount is 0.19wt% of the main material.

[0025] Step S1: polyether polyol, copper nanowires, antistatic agent and foaming agent are dispersed at a high speed of 3600 rpm with stirring for 5 minutes, and the dispersed material is preheated to 28° C. to obtain a white material.

[0026] Step S2: adding isocyanate to the white material and stirring at 6000 rpm for 20 seconds, injecting the mixture into a mold and foaming at 80° C. for 10 minutes, and curing the discharged material at room temperature for 48 hours to obtain antistatic polyurethane foam.

[0027] Example 3, preparation of antistatic polyurethane foam, specifically as follows: (1) Preparation of antistatic additives Step A1: Triallylamine, photosensitizer and anhydrous acetone were mixed, and methyl thioglycolate was added under a dry nitrogen atmosphere. 2 The reaction was stirred under ultraviolet irradiation for 4.5 h. DMPA (benzoin dimethyl ether) was used as the photosensitizer, and the dosage ratio of triallylamine, methyl thioglycolate, photosensitizer and anhydrous acetone was 10 mmol: 30 mmol: 20 mg: 40 mL. After the reaction was completed, acetone was removed by rotary evaporation to obtain intermediate a.

[0028] Step A2: Mix intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene, raise the temperature to 100°C under a dry nitrogen atmosphere, and stir to react for 8 hours, wherein the n-alkylamine is n-pentylamine, and the amount ratio of intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene is 10 mmol:35 mmol:0.12 g:80 mL. After the reaction, remove the toluene by rotary evaporation to obtain intermediate b.

[0029] Step A3: Mix the intermediate b, 1-chloropropanol, potassium iodide and dioxane, heat to 90°C and stir to react for 15 hours, wherein the amount ratio of the intermediate b, 1-chloropropanol, potassium iodide and dioxane is 10 mmol: 22 mmol: 0.3 g: 130 mL. After the reaction is completed, the dioxane is removed by vacuum rotary evaporation, the substrate is washed with deionized water, the aqueous phase is removed and vacuum dried to obtain an antistatic additive.

[0030] (2) Preparation of antistatic polyurethane foam Polyether polyol and isocyanate were used as the main ingredients for foaming, and the -NCO / -OH molar ratio was controlled to be 0.8. Among them, the polyether polyol was SMN-3050A raw material with glycerol as the initiator, with a calibrated room temperature viscosity of 750mPa·s and a hydroxyl value of 56mgKOH / g. The isocyanate was TDI (toluene diisocyanate); the copper nanowires were commercially available multi-twinned copper nanowire powder, and the addition amount was 1.6wt% of the main ingredient; the antistatic additive The agent is made by ourselves in this implementation, and the addition amount is 0.82wt% of the main material; the foaming aids specifically include: the foaming agent, all of which are water, and the addition amount is 5.5wt% of the main material; the foam stabilizer, all of which are commercially available L-580 type additives, and the addition amount is 0.85wt% of the main material; the pore opening agent, all of which are commercially available KF-28 type additives, and the addition amount is 0.66wt% of the main material; the catalyst, all of which are commercially available T-12 type additives, and the addition amount is 0.21wt% of the main material.

[0031] Step S1: polyether polyol, copper nanowires, antistatic agent and foaming agent are dispersed at a high speed of 3600 rpm with stirring for 5 minutes, and the dispersed material is preheated to 25° C. to obtain a white material.

[0032] Step S2: adding isocyanate to the white material and stirring at 6000 rpm for 20 seconds, injecting the mixture into a mold and foaming at 80° C. for 10 minutes, and curing the discharged material at room temperature for 48 hours to obtain antistatic polyurethane foam.

[0033] Example 4: Preparation of antistatic polyurethane foam, specifically as follows: (1) Preparation of antistatic additives Step A1: Triallylamine, photosensitizer and anhydrous acetone were mixed, and methyl thioglycolate was added under a dry nitrogen atmosphere. 2 The reaction was stirred under ultraviolet irradiation for 5 h. DMPA (benzoin dimethyl ether) was used as the photosensitizer, and the dosage ratio of triallylamine, methyl thioglycolate, photosensitizer and anhydrous acetone was 10 mmol: 30 mmol: 17 mg: 40 mL. After the reaction was completed, acetone was removed by rotary evaporation to obtain intermediate a.

[0034] Step A2: Mix intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene, raise the temperature to 90°C under a dry nitrogen atmosphere, and stir to react for 9.5 hours. The n-alkylamine is n-pentylamine, and the amount ratio of intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene is 10 mmol:35 mmol:0.11 g:75 mL. After the reaction, remove the toluene by rotary evaporation to obtain intermediate b.

[0035] Step A3: Mix the intermediate b, 1-chloropropanol, potassium iodide and dioxane, heat to 85°C and stir to react for 18 hours, wherein the amount ratio of the intermediate b, 1-chloropropanol, potassium iodide and dioxane is 10 mmol: 20 mmol: 0.3 g: 120 mL. After the reaction is completed, the dioxane is removed by vacuum rotary evaporation, the substrate is washed with deionized water, the aqueous phase is removed and vacuum dried to obtain an antistatic additive.

[0036] (2) Preparation of antistatic polyurethane foam Polyether polyol and isocyanate were used as the main ingredients for foaming, and the -NCO / -OH molar ratio was controlled to be 0.74. Among them, the polyether polyols all used SMN-3050A raw materials with glycerol as the initiator, with a calibrated room temperature viscosity of 750 mPa·s and a hydroxyl value of 56 mgKOH / g. The isocyanates all used TDI (toluene diisocyanate); the copper nanowires all used commercially available multi-twinned copper nanowire powders, and the addition amount was 1.9 wt % of the main material; the antistatic additives were homemade in this embodiment, and the addition amount was 0.75 wt % of the main material; the foaming additives specifically included: the foaming agent was water, and the addition amount was 5 wt % of the main material; the foam stabilizer was L-580, and the addition amount was 0.82 wt % of the main material; the pore opening agent was KF-28, and the addition amount was 0.6 wt % of the main material; the catalyst was T-12, and the addition amount was 0.2 wt % of the main material.

[0037] Step S1: polyether polyol, copper nanowires, antistatic agent and foaming agent are dispersed at a high speed of 3600 rpm with stirring for 5 minutes, and the dispersed material is preheated to 28° C. to obtain a white material.

[0038] Step S2: adding isocyanate to the white material and stirring at 6000 rpm for 20 seconds, injecting the mixture into a mold and foaming at 80° C. for 10 minutes, and curing the discharged material at room temperature for 48 hours to obtain antistatic polyurethane foam.

[0039] Comparative Example 1: Referring to the implementation process of Example 4, the antistatic auxiliary agent was replaced with an equal amount of commercially available AT-35 antistatic agent, and the rest were exactly the same.

[0040] Comparative Example 2: Referring to the implementation process of Example 4, an equal amount of the antistatic auxiliary agent was replaced with a commercially available antistatic agent SN, and the rest were exactly the same.

[0041] Take samples from the above foam products and perform tensile strength test according to GB / T 6344-2008 standard; perform surface resistivity test according to GB / T1410-2006, and record the initial surface resistivity ρ s0 The sample was stored in a constant temperature box at 80℃ for 30 days. After returning to room temperature, the surface resistivity was measured and compared with the initial surface resistivity to calculate the high temperature resistivity change rate Δρ. s1 The sample was cyclically compressed with a compression rate of 20% and a single compression time of 30s. After 1000 cycles, the surface resistivity was tested and compared with the initial surface resistivity to calculate the high-temperature resistivity change rate Δρ. s2 ; Among them, resistivity change rate = (surface resistivity after treatment - initial surface resistivity) / initial surface resistivity × 100%; specific test data are shown in Table 1:

[0042] From the test results in Table 1, it can be seen that the foam prepared in the embodiment has high mechanical strength and the initial surface resistivity is between 10 7 Ω / sq, has good antistatic effect, under high temperature and external force reciprocating deformation, the surface resistivity changes very little, and has excellent antistatic stability.

[0043] Throughout the specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0044] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in similar ways. As long as they do not deviate from the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. An antistatic polyurethane foam, characterized in that: It is made of polyether polyol and isocyanate as main materials, copper nanowires, antistatic additives and foaming additives. Wherein, the antistatic auxiliary agent is prepared by the following method: Step A1: Mix triallylamine, photosensitizer and anhydrous acetone, add methyl thioglycolate under dry nitrogen atmosphere, and use 300-400mW / cm 2 Irradiate with ultraviolet light and stir to react for 4.5-5.5 hours. After the reaction is completed, remove acetone by rotary evaporation to obtain intermediate a; Step A2: Mix intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene, raise the temperature to 85-100°C under a dry nitrogen atmosphere, and stir to react for 8-10 hours. After the reaction is completed, remove the toluene by rotary evaporation to obtain intermediate b; Step A3: Mix intermediate b, 1-chloropropanol, potassium iodide and dioxane, heat to 80-90°C, stir and react for 15-20 hours. After the reaction is completed, remove dioxane by rotary evaporation under reduced pressure, wash the substrate with deionized water, remove the aqueous phase and vacuum dry to obtain an antistatic additive.

2. The antistatic polyurethane foam according to claim 1, characterized in that: The usage ratio of triallylamine, methyl thioglycolate, photosensitizer and anhydrous acetone is 10 mmol: 30 mmol: 15-20 mg: 35-40 mL.

3. The antistatic polyurethane foam according to claim 2, characterized in that: The usage ratio of intermediate a, n-alkylamine, trimethylaluminum and anhydrous toluene is 10 mmol: 33-35 mmol: 0.1-0.12 g: 60-80 mL.

4. The antistatic polyurethane foam according to claim 3, characterized in that: The usage ratio of intermediate b, 1-chloropropanol, potassium iodide and dioxane is 10 mmol: 18-22 mmol: 0.2-0.3 g: 100-130 mL.

5. The antistatic polyurethane foam according to claim 1, characterized in that: The polyether polyol in the main material uses glycerol as an initiator, the isocyanate is TDI, and the -NCO / -OH molar ratio in the main material is 0.7-0.

8.

6. The antistatic polyurethane foam according to claim 1, characterized in that: The added amount of the copper nanowire is 1.6-2.1 wt % of the main material, and the added amount of the antistatic additive is 0.65-0.82 wt % of the main material.

7. The antistatic polyurethane foam according to claim 1, characterized in that: The foaming aid includes at least a foaming agent, a foam stabilizer, a cell opener and a catalyst.

8. A method for preparing the antistatic polyurethane foam according to any one of claims 1 to 7, characterized in that: Specifically: Step S1: Stir and disperse polyether polyol, copper nanowires, antistatic agent and foaming agent, and preheat to 25-30° C. to prepare a white material; Step S2: adding isocyanate to the white material and mixing evenly; injecting the mixture into a mold and foaming at 80° C. for 10 minutes; and curing the discharged material at room temperature for 48 hours to obtain antistatic polyurethane foam.

Images