Antistatic foaming material and preparation method thereof

Abstract

The invention relates to the technical field of high polymer materials, and particularly discloses an antistatic foaming material and a preparation method thereof. The antistatic foaming material comprises the following components in parts by mass: 40.37 to 44.65 parts of polyether polyol; 39 to 41 parts of diisocyanate; 9-11 parts of a conductive agent; 3.03 to 3.35 parts of a foaming agent; 4 to 4.6 parts of an auxiliary agent; the auxiliary agent is a compound of diallyl bisphenol A, N-dodecyl succinic anhydride and sec-butylamine. The antistatic foaming material has the advantage that the antistatic performance of the foaming material is further improved.

Description

Technical Field

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

[0002] Since electrostatic discharge in the electronics industry can cause electromagnetic interference, high-voltage electrostatic discharge may cause electric shock, endangering personal safety. Therefore, anti-static foaming materials are needed. Existing anti-static foaming materials mainly reduce the resistance of the foaming material by adding a conductive agent (carbon black), thereby reducing the generation of static electricity. However, simply adding carbon black can reduce the resistance of the polymer material to a certain extent. However, due to the large number of holes in the foam material itself, its insulation performance is relatively high. The effect of simply adding carbon black to improve the anti-static performance of the polymer material is relatively general and it is difficult to meet the needs of the electronics industry. Therefore, there is still room for improvement. Summary of the Invention

[0003] In order to further improve the antistatic performance of the foam material, the present application provides an antistatic foam material and a preparation method thereof.

[0004] In a first aspect, the present application provides an antistatic foam material, which adopts the following technical solution: An antistatic foam material comprises the following components in parts by mass: 40.37-44.65 parts of polyether polyol; 39-41 parts of diisocyanate; 9-11 parts of conductive agent; 3.03-3.35 parts of foaming agent; 4-4.6 parts of additives; The auxiliary agent is a compound of diallyl bisphenol A, N-dodecyl succinic anhydride and sec-butylamine.

[0005] By adopting the above technical solution, by adding an auxiliary agent composed of diallyl bisphenol A, N-dodecyl succinic anhydride and sec-butylamine, it can be effectively coordinated with the conductive agent, thereby greatly reducing the resistance of the foaming material, significantly improving the antistatic performance of the foaming material, and further improving the antistatic performance of the foaming material. At the same time, the addition of the auxiliary agent can significantly improve the strength of the foaming material, making the physical properties of the foaming material better, effectively improving the quality of the foaming material, and better meeting the needs of the electronics industry.

[0006] Preferably, the mass ratio of diallyl bisphenol A, N-dodecyl succinic anhydride, and sec-butylamine is 1.2-1.4:0.7-0.9:2.1-2.3.

[0007] By adopting the above technical solution and specifically selecting the mass ratio of diallyl bisphenol A, N-dodecyl succinic anhydride, and sec-butylamine, diallyl bisphenol A, N-dodecyl succinic anhydride, and sec-butylamine can be better combined with the conductive agent after being mixed in a specific ratio, thereby further improving the antistatic properties of the foaming material and better meeting the needs of the electronics industry.

[0008] Preferably, the polyether polyol is a polyether triol.

[0009] By adopting the above technical solution and specifically selecting the polyether triol, the physical properties and quality of the foaming material are better.

[0010] Preferably, the conductive agent is acetylene black.

[0011] By adopting the above technical solution and specifically selecting acetylene black as the conductive agent, it can be better coordinated with the auxiliary agent, thereby achieving a better effect of improving the antistatic performance of the foaming material.

[0012] Preferably, the foaming agent is a compound of ethylene glycol, diethanolamine, 1027 catalyst, water, silicone oil, and BL-17 catalyst.

[0013] By adopting the above technical solution and specifically selecting ethylene glycol, diethanolamine, 1027 catalyst, water, silicone oil and BL-17 catalyst to compound into a foaming agent, the foaming effect is better and the quality of the foamed material is better.

[0014] Preferably, the mass ratio of the ethylene glycol, diethanolamine, 1027 catalyst, water, silicone oil, and BL-17 catalyst is 1.21-1.34: 0.48-0.54: 0.1-0.12: 0.76-0.78: 0.2-0.22: 0.28-0.31.

[0015] By adopting the above technical solution and specifically selecting the mass ratios of ethylene glycol, diethanolamine, 1027 catalyst, water, silicone oil and BL-17 catalyst, the foaming effect is further improved, so that the performance of the foaming material is better.

[0016] In a second aspect, the present application provides a method for preparing an antistatic foam material, which adopts the following technical solution: A method for preparing the above-mentioned antistatic foam material comprises the following steps: Step 1) uniformly mixing a foaming agent and a polyether polyol to obtain a premix; Step 2), adding diisocyanate, conductive agent, and auxiliary agent to the premix, and mixing uniformly to obtain a mixture; Step 3), the mixture is foamed and formed by a foaming agent to obtain an antistatic foam material.

[0017] By adopting the above technical solution, the antistatic foam material prepared has good antistatic performance and high physical strength, and can well meet the needs of the electronics industry.

[0018] Preferably, in step 3), the foaming temperature is 20-25° C., the foaming molding time is 25-30 min, and the stirring speed is 4000-4500 r / min.

[0019] By adopting the above technical solution, the foaming quality is improved, the energy consumption is reduced, and the economic value is higher.

[0020] In summary, this application has the following beneficial effects: 1. Since the present application adds an auxiliary agent composed of diallyl bisphenol A, N-dodecyl succinic anhydride and sec-butylamine, which can effectively cooperate with the conductive agent, the resistance of the foamed material is greatly reduced, and the antistatic performance of the foamed material is significantly improved, which can further improve the antistatic performance of the foamed material. At the same time, the addition of the auxiliary agent can significantly improve the strength of the foamed material, making the physical properties of the foamed material better, effectively improving the quality of the foamed material, and better meeting the needs of the electronics industry.

[0021] 2. In this application, it is preferred to specifically select the mass ratio of diallyl bisphenol A, N-dodecyl succinic anhydride, and sec-butylamine so that diallyl bisphenol A, N-dodecyl succinic anhydride, and sec-butylamine can be better matched with the conductive agent after being mixed in a specific ratio, so that the antistatic properties of the foaming material are further improved, and the needs of the electronics industry are better met.

[0022] 3. In this application, it is preferred to specifically select ethylene glycol, diethanolamine, 1027 catalyst, water, silicone oil, and BL-17 catalyst to compound the foaming agent, so that the foaming effect is better and the quality of the foamed material is better. DETAILED DESCRIPTION

[0023] The present application is further described in detail below with reference to the embodiments.

[0024] Example 1 An antistatic foam material, and a preparation method of the antistatic foam material comprises the following steps: Step 1) 1.34 kg ethylene glycol, 0.54 kg diethanolamine, 0.12 kg 1027 catalyst, 0.82 kg water, 0.22 kg silicone oil, 0.31 kg BL-17 catalyst, and 44.65 kg polyether triol were added to a stirred tank at a speed of 200 r / min and stirred for 15 min to obtain a premix.

[0025] Step 2), 39 kg of diisocyanate, 9 kg of acetylene black, 1.2 kg of diallyl bisphenol A, 0.7 kg of N-dodecyl succinic anhydride, and 2.1 kg of sec-butylamine were added to the premix at a speed of 200 r / min and stirred for 5 min to obtain a mixture.

[0026] Step 3) The mixture is added to a foaming agent, the foaming temperature is 20° C., the foaming molding time is 25 min, the stirring speed is 4000 r / min, and the foaming molding is performed to obtain an antistatic foam material.

[0027] Ethylene glycol was purchased from Xinghengtai (Wuhan) Chemical Technology Co., Ltd.

[0028] Diethanolamine was purchased from Shandong Zhijia Chemical Technology Co., Ltd.

[0029] The 1027 catalyst was purchased from Guangzhou Yourun Synthetic Materials Co., Ltd.

[0030] The silicone oil is dimethyl silicone oil, which was purchased from Xiamen Jinanhua Industrial Materials Co., Ltd.

[0031] The BL-17 catalyst was purchased from Xindian Chemical Materials (Shanghai) Co., Ltd.

[0032] The polyether triol is polyoxypropylene triol, which was purchased from Green Union (Jining) Chemical Technology Co., Ltd., with a hydroxyl value / (mgKOH / g) of 32-36, an acid value / (mgKOH / g)≤0.05, and a viscosity (25°C) / mPa·S of 800-1000.

[0033] The diisocyanate was tetramethylbenzene diisocyanate, which was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd.

[0034] Acetylene black was purchased from Ruiyat (Tianjin) Chemical Co., Ltd.

[0035] Diallyl bisphenol A was purchased from Bashifu (Shanghai) Biotechnology Co., Ltd.

[0036] N-dodecylsuccinic anhydride was purchased from Hubei Biaoyue Biotechnology Development Co., Ltd.

[0037] Secondary butylamine was purchased from Shanghai Nanmu Chemical Co., Ltd.

[0038] Example 2 An antistatic foam material, and a preparation method of the antistatic foam material comprises the following steps: Step 1) 1.28 kg ethylene glycol, 0.51 kg diethanolamine, 0.11 kg 1027 catalyst, 0.78 kg water, 0.21 kg silicone oil, 0.3 kg BL-17 catalyst, and 42.51 kg polyether triol were added to a stirred tank at a speed of 200 r / min and stirred for 15 min to obtain a premix.

[0039] Step 2), 40 kg of diisocyanate, 10 kg of acetylene black, 1.3 kg of diallyl bisphenol A, 0.8 kg of N-dodecyl succinic anhydride, and 2.2 kg of sec-butylamine were added to the premix at a speed of 200 r / min and stirred for 5 min to obtain a mixture.

[0040] Step 3) The mixture is added into a foaming agent, the foaming temperature is 22.5° C., the foaming molding time is 28 min, the stirring speed is 4250 r / min, and the foaming molding is performed to obtain an antistatic foam material.

[0041] Ethylene glycol was purchased from Xinghengtai (Wuhan) Chemical Technology Co., Ltd.

[0042] Diethanolamine was purchased from Shandong Zhijia Chemical Technology Co., Ltd.

[0043] The 1027 catalyst was purchased from Guangzhou Yourun Synthetic Materials Co., Ltd.

[0044] The silicone oil is dimethyl silicone oil, which was purchased from Xiamen Jinanhua Industrial Materials Co., Ltd.

[0045] The BL-17 catalyst was purchased from Xindian Chemical Materials (Shanghai) Co., Ltd.

[0046] The polyether triol is polyoxypropylene triol, which was purchased from Green Union (Jining) Chemical Technology Co., Ltd., with a hydroxyl value / (mgKOH / g) of 32-36, an acid value / (mgKOH / g)≤0.05, and a viscosity (25°C) / mPa·S of 800-1000.

[0047] The diisocyanate was tetramethylbenzene diisocyanate, which was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd.

[0048] Acetylene black was purchased from Ruiyat (Tianjin) Chemical Co., Ltd.

[0049] Diallyl bisphenol A was purchased from Bashifu (Shanghai) Biotechnology Co., Ltd.

[0050] N-dodecylsuccinic anhydride was purchased from Hubei Biaoyue Biotechnology Development Co., Ltd.

[0051] Secondary butylamine was purchased from Shanghai Nanmu Chemical Co., Ltd.

[0052] Example 3 An antistatic foam material, and a preparation method of the antistatic foam material comprises the following steps: Step 1) 1.21 kg of ethylene glycol, 0.48 kg of diethanolamine, 0.1 kg of 1027 catalyst, 0.76 kg of water, 0.2 kg of silicone oil, 0.28 kg of BL-17 catalyst, and 40.37 kg of polyether triol were added to a stirred tank at a speed of 200 r / min and stirred for 15 minutes to obtain a premix.

[0053] Step 2), 41 kg of diisocyanate, 11 kg of acetylene black, 1.4 kg of diallyl bisphenol A, 0.9 kg of N-dodecyl succinic anhydride, and 2.3 kg of sec-butylamine were added to the premix at a speed of 200 r / min and stirred for 5 min to obtain a mixture.

[0054] Step 3) The mixture is added to a foaming agent, the foaming temperature is 25° C., the foaming molding time is 30 min, the stirring speed is 4500 r / min, and the foaming molding is performed to obtain an antistatic foam material.

[0055] Ethylene glycol was purchased from Xinghengtai (Wuhan) Chemical Technology Co., Ltd.

[0056] Diethanolamine was purchased from Shandong Zhijia Chemical Technology Co., Ltd.

[0057] The 1027 catalyst was purchased from Guangzhou Yourun Synthetic Materials Co., Ltd.

[0058] The silicone oil is dimethyl silicone oil, which was purchased from Xiamen Jinanhua Industrial Materials Co., Ltd.

[0059] The BL-17 catalyst was purchased from Xindian Chemical Materials (Shanghai) Co., Ltd.

[0060] The polyether triol is polyoxypropylene triol, which was purchased from Green Union (Jining) Chemical Technology Co., Ltd., with a hydroxyl value / (mgKOH / g) of 32-36, an acid value / (mgKOH / g)≤0.05, and a viscosity (25°C) / mPa·S of 800-1000.

[0061] The diisocyanate was tetramethylbenzene diisocyanate, which was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd.

[0062] Acetylene black was purchased from Ruiyat (Tianjin) Chemical Co., Ltd.

[0063] Diallyl bisphenol A was purchased from Bashifu (Shanghai) Biotechnology Co., Ltd.

[0064] N-dodecylsuccinic anhydride was purchased from Hubei Biaoyue Biotechnology Development Co., Ltd.

[0065] Secondary butylamine was purchased from Shanghai Nanmu Chemical Co., Ltd.

[0066] Comparative Example 1 An antistatic foam material, and a preparation method of the antistatic foam material comprises the following steps: Step 1) 1.28 kg ethylene glycol, 0.51 kg diethanolamine, 0.11 kg 1027 catalyst, 0.78 kg water, 0.21 kg silicone oil, 0.3 kg BL-17 catalyst, and 42.51 kg polyether triol were added to a stirred tank at a speed of 200 r / min and stirred for 15 min to obtain a premix.

[0067] Step 2) 40 kg of diisocyanate, 10 kg of acetylene black, 1.3 kg of polypropylene glycol-600, 0.8 kg of N-dodecylsuccinic anhydride, and 2.2 kg of sec-butylamine were added to the premix at a speed of 200 r / min and stirred for 5 min to obtain a mixture.

[0068] Step 3) The mixture is added into a foaming agent, the foaming temperature is 22.5° C., the foaming molding time is 28 min, the stirring speed is 4250 r / min, and the foaming molding is performed to obtain an antistatic foam material.

[0069] Ethylene glycol was purchased from Xinghengtai (Wuhan) Chemical Technology Co., Ltd.

[0070] Diethanolamine was purchased from Shandong Zhijia Chemical Technology Co., Ltd.

[0071] The 1027 catalyst was purchased from Guangzhou Yourun Synthetic Materials Co., Ltd.

[0072] The silicone oil is dimethyl silicone oil, which was purchased from Xiamen Jinanhua Industrial Materials Co., Ltd.

[0073] The BL-17 catalyst was purchased from Xindian Chemical Materials (Shanghai) Co., Ltd.

[0074] The polyether triol is polyoxypropylene triol, which was purchased from Green Union (Jining) Chemical Technology Co., Ltd., with a hydroxyl value / (mgKOH / g) of 32-36, an acid value / (mgKOH / g)≤0.05, and a viscosity (25°C) / mPa·S of 800-1000.

[0075] The diisocyanate was tetramethylbenzene diisocyanate, which was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd.

[0076] Acetylene black was purchased from Ruiyat (Tianjin) Chemical Co., Ltd.

[0077] Polypropylene glycol-600 was purchased from Hai'an Petrochemical Plant in Jiangsu Province.

[0078] N-dodecylsuccinic anhydride was purchased from Hubei Biaoyue Biotechnology Development Co., Ltd.

[0079] Secondary butylamine was purchased from Shanghai Nanmu Chemical Co., Ltd.

[0080] Comparative Example 2 An antistatic foam material, and a preparation method of the antistatic foam material comprises the following steps: Step 1) 1.28 kg ethylene glycol, 0.51 kg diethanolamine, 0.11 kg 1027 catalyst, 0.78 kg water, 0.21 kg silicone oil, 0.3 kg BL-17 catalyst, and 42.51 kg polyether triol were added to a stirred tank at a speed of 200 r / min and stirred for 15 min to obtain a premix.

[0081] Step 2), 40 kg of diisocyanate, 10 kg of acetylene black, 1.3 kg of diallyl bisphenol A, 0.8 kg of octadecylamine, and 2.2 kg of sec-butylamine were added to the premix at a speed of 200 r / min and stirred for 5 min to obtain a mixture.

[0082] Step 3) The mixture is added into a foaming agent, the foaming temperature is 22.5° C., the foaming molding time is 28 min, the stirring speed is 4250 r / min, and the foaming molding is performed to obtain an antistatic foam material.

[0083] Ethylene glycol was purchased from Xinghengtai (Wuhan) Chemical Technology Co., Ltd.

[0084] Diethanolamine was purchased from Shandong Zhijia Chemical Technology Co., Ltd.

[0085] The 1027 catalyst was purchased from Guangzhou Yourun Synthetic Materials Co., Ltd.

[0086] The silicone oil is dimethyl silicone oil, which was purchased from Xiamen Jinanhua Industrial Materials Co., Ltd.

[0087] The BL-17 catalyst was purchased from Xindian Chemical Materials (Shanghai) Co., Ltd.

[0088] The polyether triol is polyoxypropylene triol, which was purchased from Green Union (Jining) Chemical Technology Co., Ltd., with a hydroxyl value / (mgKOH / g) of 32-36, an acid value / (mgKOH / g)≤0.05, and a viscosity (25°C) / mPa·S of 800-1000.

[0089] The diisocyanate was tetramethylbenzene diisocyanate, which was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd.

[0090] Acetylene black was purchased from Ruiyat (Tianjin) Chemical Co., Ltd.

[0091] Diallyl bisphenol A was purchased from Bashifu (Shanghai) Biotechnology Co., Ltd.

[0092] Octadecylamine was purchased from Jinan Bio Chemical Co., Ltd.

[0093] Secondary butylamine was purchased from Shanghai Nanmu Chemical Co., Ltd.

[0094] Comparative Example 3 An antistatic foam material, and a preparation method of the antistatic foam material comprises the following steps: Step 1) 1.28 kg ethylene glycol, 0.51 kg diethanolamine, 0.11 kg 1027 catalyst, 0.78 kg water, 0.21 kg silicone oil, 0.3 kg BL-17 catalyst, and 42.51 kg polyether triol were added to a stirred tank at a speed of 200 r / min and stirred for 15 min to obtain a premix.

[0095] Step 2), add 40kg diisocyanate, 10kg acetylene black, 1.3kg diallyl bisphenol A, 0.8kg N-dodecyl succinic anhydride, 2.2kg octylphenol polyoxyethylene ether to the premix, rotate at 200r / min, stir for 5min, mix evenly, and obtain a mixture.

[0096] Step 3) The mixture is added into a foaming agent, the foaming temperature is 22.5° C., the foaming molding time is 28 min, the stirring speed is 4250 r / min, and the foaming molding is performed to obtain an antistatic foam material.

[0097] Ethylene glycol was purchased from Xinghengtai (Wuhan) Chemical Technology Co., Ltd.

[0098] Diethanolamine was purchased from Shandong Zhijia Chemical Technology Co., Ltd.

[0099] The 1027 catalyst was purchased from Guangzhou Yourun Synthetic Materials Co., Ltd.

[0100] The silicone oil is dimethyl silicone oil, which was purchased from Xiamen Jinanhua Industrial Materials Co., Ltd.

[0101] The BL-17 catalyst was purchased from Xindian Chemical Materials (Shanghai) Co., Ltd.

[0102] The polyether triol is polyoxypropylene triol, which was purchased from Green Union (Jining) Chemical Technology Co., Ltd., with a hydroxyl value / (mgKOH / g) of 32-36, an acid value / (mgKOH / g)≤0.05, and a viscosity (25°C) / mPa·S of 800-1000.

[0103] The diisocyanate was tetramethylbenzene diisocyanate, which was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd.

[0104] Acetylene black was purchased from Ruiyat (Tianjin) Chemical Co., Ltd.

[0105] Diallyl bisphenol A was purchased from Bashifu (Shanghai) Biotechnology Co., Ltd.

[0106] N-dodecylsuccinic anhydride was purchased from Hubei Biaoyue Biotechnology Development Co., Ltd.

[0107] Octylphenol polyoxyethylene ether was purchased from Hai'an Petrochemical Plant in Jiangsu Province, specification: OP-7.

[0108] Comparative Example 4 An antistatic foam material, and a preparation method of the antistatic foam material comprises the following steps: Step 1) 1.28 kg ethylene glycol, 0.51 kg diethanolamine, 0.11 kg 1027 catalyst, 0.78 kg water, 0.21 kg silicone oil, 0.3 kg BL-17 catalyst, and 42.51 kg polyether triol were added to a stirred tank at a speed of 200 r / min and stirred for 15 min to obtain a premix.

[0109] Step 2), add 40kg diisocyanate, 10kg acetylene black, 1.3kg polypropylene glycol-600, 0.8kg octadecylamine, and 2.2kg octylphenol polyoxyethylene ether to the premix, rotate at 200r / min, stir for 5min, mix evenly, and obtain a mixture.

[0110] Step 3) The mixture is added into a foaming agent, the foaming temperature is 22.5° C., the foaming molding time is 28 min, the stirring speed is 4250 r / min, and the foaming molding is performed to obtain an antistatic foam material.

[0111] Ethylene glycol was purchased from Xinghengtai (Wuhan) Chemical Technology Co., Ltd.

[0112] Diethanolamine was purchased from Shandong Zhijia Chemical Technology Co., Ltd.

[0113] The 1027 catalyst was purchased from Guangzhou Yourun Synthetic Materials Co., Ltd.

[0114] The silicone oil is dimethyl silicone oil, which was purchased from Xiamen Jinanhua Industrial Materials Co., Ltd.

[0115] The BL-17 catalyst was purchased from Xindian Chemical Materials (Shanghai) Co., Ltd.

[0116] The polyether triol is polyoxypropylene triol, which was purchased from Green Union (Jining) Chemical Technology Co., Ltd., with a hydroxyl value / (mgKOH / g) of 32-36, an acid value / (mgKOH / g)≤0.05, and a viscosity (25°C) / mPa·S of 800-1000.

[0117] The diisocyanate was tetramethylbenzene diisocyanate, which was purchased from Bashifu (Shanghai) Biopharmaceutical Technology Co., Ltd.

[0118] Acetylene black was purchased from Ruiyat (Tianjin) Chemical Co., Ltd.

[0119] Polypropylene glycol-600 was purchased from Hai'an Petrochemical Plant in Jiangsu Province.

[0120] Octadecylamine was purchased from Jinan Bio Chemical Co., Ltd.

[0121] Octylphenol polyoxyethylene ether was purchased from Hai'an Petrochemical Plant in Jiangsu Province, specification: OP-7.

[0122] Experiment 1 According to the requirements of ASTM D257 "Standard Test Method for DC Resistance or Conductance of Insulating Materials", the antistatic foam materials of the embodiments and comparative examples were made into films to be tested, and the resistance values ​​of the films to be tested were measured.

[0123] Experiment 2 According to the requirements of GB / T1040.2-2022 "Determination of tensile properties of plastics Part 2: Test conditions for molded and extruded plastics", the antistatic foam materials of each embodiment and comparative example were made into test samples, and the tensile strength of the test samples was tested. Type 1A specimens were selected for testing, and the test speed was 50 mm / min.

[0124] The specific test data of Experiment 1-2 are shown in Table 1.

[0125] Table 1 Resistance value (Ω) Tensile strength (MPa) Example 1 <![CDATA[8.2×10 4 ]]> 37.2 Example 2 <![CDATA[7.9×10 4 ]]> 38.3 Example 3 <![CDATA[7.6×10 4 ]]> 39.6 Comparative Example 1 <![CDATA[5.3×10 8 ]]> 31.4 Comparative Example 2 <![CDATA[4.7×10 8 ]]> 29.8 Comparative Example 3 <![CDATA[2.1×10 8 ]]> 30.7 Comparative Example 4 <![CDATA[8.4×10 8 ]]> 28.1 According to the data comparison of each embodiment and comparative example in Table 1, the resistance value of each embodiment is significantly lower than that of each comparative example. Although each comparative example adds an additive that improves the antistatic performance of the foam material, the effect of reducing the resistance is still worse than that of the embodiment. This proves that only by compounding diallyl bisphenol A, N-dodecyl succinic anhydride, and sec-butylamine in a specific ratio can the antistatic effect of the conductive agent be effectively improved, thereby significantly improving the antistatic effect of the foam material.

[0126] The tensile strength of each embodiment is better than that of each comparative example. It can be seen that by compounding diallyl bisphenol A, N-dodecyl succinic anhydride, and sec-butylamine in a specific ratio, not only the antistatic property of the foaming material can be improved, but also the strength of the foaming material can be further improved, so that the quality of the foaming material is better and it can better meet the needs of the electronics industry.

[0127] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. An antistatic foam material, characterized in that: The composition includes the following parts by weight: 40.37-44.65 parts of polyether polyol; 39-41 parts of diisocyanate; 9-11 parts of conductive agent; 3.03-3.35 parts of foaming agent; 4-4.6 parts of additives; The auxiliary agent is a compound of diallyl bisphenol A, N-dodecyl succinic anhydride and sec-butylamine.

2. The antistatic foam material according to claim 1, wherein: The mass ratio of diallyl bisphenol A, N-dodecyl succinic anhydride and sec-butylamine is 1.2-1.4:0.7-0.9:2.1-2.

3.

3. The antistatic foam material according to claim 1, wherein: The polyether polyol is a polyether triol.

4. The antistatic foam material according to claim 1, wherein: The conductive agent is acetylene black.

5. The antistatic foam material according to claim 1, characterized in that: The foaming agent is a compound of ethylene glycol, diethanolamine, 1027 catalyst, water, silicone oil and BL-17 catalyst.

6. The antistatic foam material according to claim 5, characterized in that: The mass ratio of the ethylene glycol, diethanolamine, 1027 catalyst, water, silicone oil and BL-17 catalyst is 1.21-1.34: 0.48-0.54: 0.1-0.12: 0.76-0.78: 0.2-0.22: 0.28-0.

31.

7. A method for preparing the antistatic foam material according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1) uniformly mixing a foaming agent and polyether polyol to obtain a premix; Step 2), adding diisocyanate, conductive agent, and auxiliary agent to the premix, and mixing uniformly to obtain a mixture; Step 3) the mixture is foamed and formed by a foaming agent to obtain an antistatic foam material.

8. The method for preparing an antistatic foam material according to claim 7, wherein: In the step 3), the foaming temperature is 20-25° C., the foaming molding time is 25-30 min, and the stirring speed is 4000-4500 r / min.