CN116554427A - Antistatic sponge and preparation method thereof - Google Patents

Antistatic sponge and preparation method thereof Download PDF

Info

Publication number
CN116554427A
CN116554427A CN202310327954.2A CN202310327954A CN116554427A CN 116554427 A CN116554427 A CN 116554427A CN 202310327954 A CN202310327954 A CN 202310327954A CN 116554427 A CN116554427 A CN 116554427A
Authority
CN
China
Prior art keywords
polyether polyol
parts
antistatic
sponge
modified
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310327954.2A
Other languages
Chinese (zh)
Inventor
邓纳新
吕亮
武留振
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Huian Household Article Co ltd
Original Assignee
Foshan Huian Household Article Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foshan Huian Household Article Co ltd filed Critical Foshan Huian Household Article Co ltd
Priority to CN202310327954.2A priority Critical patent/CN116554427A/en
Publication of CN116554427A publication Critical patent/CN116554427A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4804Two or more polyethers of different physical or chemical nature
    • C08G18/4812Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/4009Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4072Mixtures of compounds of group C08G18/63 with other macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/63Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers
    • C08G18/632Block or graft polymers obtained by polymerising compounds having carbon-to-carbon double bonds on to polymers onto polyethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/16Nitrogen-containing compounds
    • C08K5/17Amines; Quaternary ammonium compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2101/00Manufacture of cellular products
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00Foam properties
    • C08G2110/0025Foam properties rigid
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00Foam properties
    • C08G2110/0083Foam properties prepared using water as the sole blowing agent
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/017Additives being an antistatic agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention discloses an antistatic sponge and a preparation method thereof, and belongs to the technical field of sponge production. The raw materials for preparing the antistatic sponge comprise: a first polyether polyol, a second polyether polyol, a modified second polyether polyol, water, an antistatic agent, silicone oil, a catalyst and isocyanate; the functionality of the first polyether polyol is 2, the functionality of the second polyether polyol is 3, and the modified second polyether polyol is the product of grafting the second polyether polyol with styrene and methyl methacrylate. According to the antistatic sponge provided by the invention, the antistatic agent is added, and the first polyether polyol, the second polyether polyol and the modified second polyether polyol which are different in activity are adopted, so that the speed of a polymerization reaction is matched with the speed of exhaust, and bubbles can be exhausted, the porosity is greatly improved, and the air permeability of the sponge is further improved.

Description

Antistatic sponge and preparation method thereof
Technical Field
The invention relates to the technical field of sponge production, in particular to an antistatic sponge and a preparation method thereof.
Background
In recent years, sponges are widely used in the field of electronic component packaging because they are lightweight, inexpensive, easy to cut, and have a cushioning and shock-resistant effect. However, the sponge is prone to static electricity, which can affect its use in packaging applications. In this regard, the prior art adds an antistatic agent during the production of the sponge to make the prepared sponge antistatic. Among the antistatic agents currently added to sponges are carbon black, activated carbon, ABS seeds, ionic antistatic agents, nonionic antistatic agents, wherein the use of ionic antistatic agents in sponges is limited because inorganic antistatic agents affect the strength of the sponges and ionic antistatic agents migrate into metal ions. The nonionic antistatic agent has the best dispersibility in the sponge and the best antistatic effect, and is therefore widely used in the production and manufacture of antistatic sponges. However, since the nonionic antistatic agent contains a large amount of polar groups and nonpolar groups, it has surface activity, which tends to cause shrinkage of closed cells, and thus the air permeability of the antistatic agent is reduced, and the packaging requirements of electronic components cannot be satisfied.
It can be seen that there is a need for improvements and improvements in the art.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide an antistatic sponge and a preparation method thereof, which aims to solve the defects of low porosity and poor air permeability of the sponge added with a nonionic antistatic agent in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an antistatic sponge, wherein the raw materials for preparing the antistatic sponge comprise: a first polyether polyol, a second polyether polyol, a modified second polyether polyol, water, an antistatic agent, silicone oil, a catalyst and isocyanate; the functionality of the first polyether polyol is 2, the functionality of the second polyether polyol is 3, and the modified second polyether polyol is the product of grafting the second polyether polyol with styrene and methyl methacrylate.
In the antistatic sponge, the hydroxyl value of the first polyether polyol and the second polyether polyol is 56.
In the antistatic sponge, the hydroxyl value of the modified second polyether polyol is 29, and the solid content is 45%.
In the antistatic sponge, the addition amount of the first polyether polyol accounts for 25-40% of the total mass of the first polyether polyol, the second polyether polyol and the modified second polyether polyol.
In the antistatic sponge, the antistatic agent is an ethoxylated alkylamine antistatic agent.
In the antistatic sponge, the raw materials for preparing the antistatic sponge comprise the following components in parts by weight: 25-40 parts of first polyether polyol, 10-30 parts of second polyether polyol, 30-65 parts of modified second polyether polyol, 2-3.5 parts of water, 1 part of antistatic agent, 1-1.2 parts of silicone oil, 0.12-0.17 part of amine catalyst, 0.1-0.14 part of gel catalyst and 33-48 parts of isocyanate.
In the antistatic sponge, the raw materials for preparing the antistatic sponge comprise the following components in parts by weight: 30 parts of a first polyether polyol, 20 parts of a second polyether polyol, 50 parts of a modified second polyether polyol, 3 parts of water, 1 part of an antistatic agent, 1.1 parts of silicone oil, 0.15 part of an amine catalyst, 0.12 part of a gel catalyst and 39 parts of isocyanate.
A method for preparing an antistatic sponge as described above, wherein the method comprises the steps of: taking the first polyether polyol, the second polyether polyol, the modified second polyether polyol, water, antistatic agent, silicone oil and catalyst, and stirring and uniformly mixing to obtain a mixture; taking isocyanate and adding the isocyanate into the mixed material, and rapidly stirring for 4-5s to obtain foaming slurry; pouring the foaming slurry into a mould for foaming; and curing for 24 hours at 25 ℃ after foaming is finished, and obtaining a finished product.
In the preparation method of the antistatic sponge, the temperature of the mixture and the isocyanate before mixing is 23-25 ℃.
The beneficial effects are that:
the invention provides an antistatic sponge and a preparation method thereof, wherein antistatic agents are added into raw materials for preparing the antistatic sponge, and simultaneously, first polyether polyol, second polyether polyol and modified second polyether polyol with different activities are adopted, so that the speed of polymerization reaction is matched with the speed of exhaust, and bubbles can be exhausted, the porosity is greatly improved, and the air permeability of the sponge is further improved. Meanwhile, the hardness of the sponge can be greatly improved by adopting the second polyether polyol modified by the styrene and the methyl methacrylate, and the requirement of the external package of the electronic element on the hardness is met.
Detailed Description
The invention provides an antistatic sponge and a preparation method thereof, and the invention is further described in detail in the following examples in order to make the purposes, technical schemes and effects of the invention clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides an antistatic sponge, which is prepared from the raw materials of a first polyether polyol, a second polyether polyol, a modified second polyether polyol, water, an antistatic agent, silicone oil, a catalyst and isocyanate. Wherein the first polyether polyol has a functionality of 2, the second polyether polyol has a functionality of 3, the first polyether polyol has an average molecular weight of 2000, the second polyether polyol has an average molecular weight of 3000, and the modified second polyether polyol is the product of grafting the second polyether polyol with styrene and methyl methacrylate.
In the raw materials of the antistatic sponge, the activity of the second polyether polyol is higher, and the added antistatic agent and silicone oil both contain a large number of active groups, so that the speed of polymerization and reaction can be accelerated, the speed of bubble generation can not keep up with the speed of crosslinking, gas can not be discharged easily, closed pores are formed, the aperture ratio is finally low, the air permeability is poor, and the sponge finished product can not reach the standard. In order to improve the porosity, the invention adds the first polyether polyol with the functionality of 2 into the raw material by adjusting the speed of the polymerization reaction, namely, the first polyether polyol with lower activity is adopted to replace the second polyether polyol, so that the speed of the polymerization reaction is reduced, the polymerization speed is further adapted to the foaming speed, the generated bubbles can be discharged through the pores, and the porosity and the air permeability of the sponge are improved. In addition, in order to ensure that the obtained antistatic sponge has better hardness, the modified second polyether polyol grafted by the second polyether polyol and grafted by the methyl methacrylate is adopted as a main raw material, and the grafted second polyether polyol not only can keep better activity, but also can form a better reticular cross-linked structure, so that the hardness of the sponge can be greatly improved.
According to the antistatic sponge, the preparation raw materials are adjusted, and the first polyether polyol, the second polyether polyol and the modified second polyether polyol with different activities are matched for use, so that the foaming speed is matched with the polymerization speed, bubbles can be discharged, and the porosity is improved. The antistatic sponge prepared from the raw materials has excellent antistatic property, and the porosity can reach 95%, so that the requirement of the sponge as an electronic element packaging application is met.
In a preferred embodiment, the hydroxyl number of the first polyether polyol and the second polyether polyol are both 56mgKOH/g, the average molecular weight of the first polyether polyol is 2000, and the average molecular weight of the second polyether polyol is 3000; the modified second polyether polyol has a hydroxyl value of 29mgKOH/g (the molecular weight of the modified second polyether polyol is not measurable, and the molecular weight is theoretically more than 3000 because it is a mixture). In this example, the first polyether polyol and the second polyether polyol having the same hydroxyl value and different average molecular weights, and the modified second polyether polyol having the different hydroxyl value and the second polyether polyol are used, so that not only can the crosslinking speed be adjusted, but also the gradation can be formed due to the different molecular weights of the three, and the sponge product with hardness and rebound resilience suitable for packaging of electronic components can be obtained by better crosslinking in polymerization.
The higher the addition amount of the first polyether polyol is, the slower the crosslinking speed is, the higher the opening ratio of the formed cells is, but the foaming rate is reduced, while the lower the addition amount of the first polyether polyol is, the faster the crosslinking speed is, the lower the opening ratio of the formed cells is, and the requirement of the sponge air permeability cannot be met. In order to ensure the adaptation of the crosslinking speed and the foaming speed during the preparation, under the condition of not changing other auxiliary materials, the addition amount of the first polyether polyol is not less than 25 percent and not more than 40 percent of the total amount of the first polyether polyol, the second polyether polyol and the modified second polyether polyol, and when the addition amount of the first polyether polyol is between 25 percent and 40 percent, the foam has better aperture ratio and good air permeability, and the sponge density, the hardness and the rebound resilience can meet the requirements.
In a preferred embodiment, the modified second polyether polyol has a solids content of 45%. Because the modified second polyether polyol is a product obtained by modifying styrene and methyl methacrylate on the basis of the second polyether polyol, the addition amount of the styrene and the methyl methacrylate can influence the activity of the modified product during modification, and further can influence the hardness and the rebound resilience of the sponge. When the total addition amount of the styrene and the methyl methacrylate is 45%, that is, the solid content of the modified second polyether polyol is equal to that of the modified second polyether polyol, the activity of the modified product is close to that of the modified second polyether polyol, the amounts of the second polyether polyol and the modified second polyether polyol can be conveniently prepared, and the product obtained after the reaction of the first polyether polyol, the second polyether polyol and the modified polyether polyol has more proper hardness and rebound resilience and is suitable for being used as a package of electronic elements.
In a preferred embodiment, the antistatic agent is an ethoxylated alkylamine type antistatic agent, such as an ethoxylated octadecyl primary amine, an ethoxylated cocoalkylamine, and the like. The ethoxylated alkylamine antistatic agent is a nonionic antistatic agent, has better dispersibility and compatibility in sponge raw materials, and has better antistatic effect.
In a preferred embodiment, the antistatic sponge is prepared from the following raw materials in parts by weight: 25-40 parts of first polyether polyol, 10-30 parts of second polyether polyol, 30-65 parts of modified second polyether polyol, 2-3.5 parts of water, 1 part of antistatic agent, 1-1.2 parts of silicone oil, 0.12-0.17 part of amine catalyst, 0.1-0.14 part of gel catalyst and 33-48 parts of isocyanate. The antistatic sponge prepared from the raw materials in the proportion has good antistatic property, high porosity and good air permeability.
In a preferred embodiment, the antistatic sponge comprises the following raw materials in parts by weight: 30 parts of a first polyether polyol, 20 parts of a second polyether polyol, 50 parts of a modified second polyether polyol, 3 parts of water, 1 part of an antistatic agent, 1.1 parts of silicone oil, 0.15 part of an amine catalyst, 0.12 part of a gel catalyst and 39 parts of isocyanate. The antistatic sponge prepared by the embodiment has the surface resistance of 35 omega, the porosity of 97 percent and better hardness and rebound resilience.
The invention also provides a preparation method of the antistatic sponge, which is used for preparing the antistatic sponge, and comprises the following steps: mixing the first polyether polyol, the second polyether polyol, the modified second polyether polyol, water, antistatic agent, silicone oil and catalyst according to the proportion, and stirring uniformly to obtain a mixture; taking isocyanate and adding the isocyanate into the mixed material, and rapidly stirring for 4-5s to obtain foaming slurry; pouring the foaming slurry into a mould for foaming; and curing for 24 hours at 25 ℃ after foaming is finished, and obtaining a finished product.
By the preparation method, the sponge with high antistatic performance, high porosity and high air permeability can be prepared, and can be used for packaging electronic elements, and the performance of the sponge can meet various requirements of packaging.
In a preferred embodiment, the isocyanate is added at a temperature of 23 to 25℃to avoid excessive foaming due to excessive crosslinking speed resulting from excessive initial temperature after mixing, thus ensuring that the temperature of each material is 23 to 25℃prior to storage and mixing.
To further illustrate the antistatic sponge and the preparation method thereof provided by the invention, the following examples are provided.
Example 1
A preferred antistatic sponge comprises the following raw materials in parts by weight: 30 parts of a first polyether polyol, 20 parts of a second polyether polyol, 50 parts of a modified second polyether polyol, 3 parts of water, 1 part of an antistatic agent, 1.1 parts of silicone oil, 0.15 part of an amine catalyst, 0.12 part of a gel catalyst and 39 parts of isocyanate.
The preparation method of the antistatic sponge comprises the following preparation steps: mixing the first polyether polyol, the second polyether polyol, the modified second polyether polyol, water, antistatic agent, silicone oil and catalyst according to the proportion, and stirring uniformly to obtain a mixture; taking isocyanate and adding the isocyanate into the mixed material, and rapidly stirring for 4-5s to obtain foaming slurry; pouring the foaming slurry into a mould for foaming; and curing for 24 hours at 25 ℃ after foaming is finished, and obtaining a finished product.
Example 2
The antistatic sponge comprises the following raw materials in parts by weight: 25 parts of a first polyether polyol, 10 parts of a second polyether polyol, 65 parts of a modified second polyether polyol, 2 parts of water, 1 part of an antistatic agent, 1 part of silicone oil, 0.12 part of an amine catalyst, 0.1 part of a gel catalyst and 33 parts of isocyanate.
Example 3
The antistatic sponge comprises the following raw materials in parts by weight: 40 parts of a first polyether polyol, 30 parts of a second polyether polyol, 30 parts of a modified second polyether polyol, 3.5 parts of water, 1 part of an antistatic agent, 1.2 parts of silicone oil, 0.17 part of an amine catalyst, 0.14 part of a gel catalyst and 48 parts of isocyanate.
Example 4
The antistatic sponge comprises the following raw materials in parts by weight: 35 parts of a first polyether polyol, 25 parts of a second polyether polyol, 40 parts of a modified second polyether polyol, 3 parts of water, 1 part of an antistatic agent, 1.1 parts of silicone oil, 0.15 part of an amine catalyst, 0.12 part of a gel catalyst and 42 parts of isocyanate.
Comparative example 1
The antistatic sponge comprises the following raw materials in parts by weight: 50 parts of second polyether polyol, 50 parts of modified second polyether polyol, 3 parts of water, 1 part of antistatic agent, 1.1 part of silicone oil, 0.15 part of amine catalyst, 0.12 part of gel catalyst and 39 parts of isocyanate. Wherein the hydroxyl values of the second polyether polyol are 56mgKOH/g, and the average molecular weight of the second polyether polyol is 3000; the hydroxyl value of the modified second polyether polyol was 29mgKOH/g and the solid content was 45%.
Comparative example 2
The antistatic sponge comprises the following raw materials in parts by weight: 50 parts of a first polyether polyol, 25 parts of a second polyether polyol, 25 parts of a modified second polyether polyol, 3 parts of water, 1 part of an antistatic agent, 1.1 parts of silicone oil, 0.15 part of an amine catalyst, 0.12 part of a gel catalyst and 39 parts of isocyanate.
Comparative example 3
The antistatic sponge comprises the following raw materials in parts by weight: 10 parts of a first polyether polyol, 40 parts of a second polyether polyol, 50 parts of a modified second polyether polyol, 3 parts of water, 1 part of an antistatic agent, 1.1 parts of silicone oil, 0.15 part of an amine catalyst, 0.12 part of a gel catalyst and 39 parts of isocyanate.
Comparative example 4
The antistatic sponge comprises the following raw materials in parts by weight: 30 parts of first polyether polyol, 70 parts of second polyether polyol, 3 parts of water, 1 part of antistatic agent, 1.1 part of silicone oil, 0.15 part of amine catalyst, 0.12 part of gel catalyst and 39 parts of isocyanate.
In examples 1 to 4 and comparative examples 1 to 4, the hydroxyl value of the first polyether polyol and the second polyether polyol was 56mgKOH/g, the average molecular weight of the first polyether polyol was 2000, and the average molecular weight of the second polyether polyol was 3000; the hydroxyl value of the modified second polyether polyol was 29mgKOH/g and the solid content was 45%.
The preparation methods of examples 2 to 4 and comparative examples 1 to 4 were the same as those of example 1, except that the proportions of the first polyether polyol, the second polyether polyol and the modified second polyether polyol were different.
The antistatic sponges of examples 1 to 4 and comparative examples 1 to 3 were tested for hardness, resilience, antistatic property, and open cell content. Wherein the hardness is measured according to the method A of the hardness measurement (collapse method) of the soft foam polymer material of GB/T10807-2006; the rebound resilience is carried out according to the GB6670-86 standard; the antistatic property testing method comprises the following steps: measuring the surface resistance value of the sponge material by using a surface resistance tester, wherein the smaller the resistance value is, the better the antistatic effect is; the open porosity is tested by using a sponge open porosity detector provided by Bei Shide company. The specific test results are shown in table 1.
TABLE 1 antistatic sponge Performance test results
As is clear from Table 1, the surface resistances of examples 1 to 4 were 35. OMEGA, the opening ratios thereof were 95% or more, and the air permeability was good, and the indentation hardness and rebound resilience thereof were good, so that the composition was very suitable for packaging electronic components.
In comparative examples 1 and 3, however, the first polyether polyol was not added or the first polyether polyol was added in a small amount, and thus the open cell content was low, resulting in poor air permeability of the sponge. However, in comparative example 2, the amount of the first polyether polyol added is too large, so that the gas generation speed is higher than the crosslinking speed, and the phenomenon of implosion occurs, so that the product cannot be molded and cannot be detected; in comparative example 4, since the modified second polyether polyol was not added, the hardness was 184N alone, which was very low, and the supporting property was lowered, which was not suitable for packaging electronic components.
Therefore, the prepared sponge has good antistatic performance and proper hardness, rebound resilience and aperture ratio through the combination of the first polyether polyol, the second polyether polyol and the modified second polyether polyol and the addition of the antistatic agent.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present invention and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the following claims.

Claims (9)

1. An antistatic sponge, characterized in that the raw materials for preparing the antistatic sponge comprise: a first polyether polyol, a second polyether polyol, a modified second polyether polyol, water, an antistatic agent, silicone oil, a catalyst and isocyanate; the functionality of the first polyether polyol is 2, the functionality of the second polyether polyol is 3, and the modified second polyether polyol is the product of grafting the second polyether polyol with styrene and methyl methacrylate.
2. An antistatic sponge according to claim 1 wherein the first and second polyether polyols each have a hydroxyl number of 56.
3. An antistatic sponge according to claim 2 wherein the modified second polyether polyol has a hydroxyl number of 29 and a solids content of 45%.
4. An antistatic sponge according to claim 3 wherein the first polyether polyol is added in an amount of 25% to 40% of the total mass of the first polyether polyol, the second polyether polyol and the modified second polyether polyol.
5. The antistatic sponge of claim 4 wherein the antistatic agent is an ethoxylated alkylamine type antistatic agent.
6. The antistatic sponge of claim 5 wherein the raw materials for preparing the antistatic sponge comprise, in parts by weight: 25-40 parts of first polyether polyol, 10-30 parts of second polyether polyol, 30-65 parts of modified second polyether polyol, 2-3.5 parts of water, 1 part of antistatic agent, 1-1.2 parts of silicone oil, 0.12-0.17 part of amine catalyst, 0.1-0.14 part of gel catalyst and 33-48 parts of isocyanate.
7. The antistatic sponge of claim 1, wherein the raw materials for preparing the antistatic sponge comprise, in parts by weight: 30 parts of a first polyether polyol, 20 parts of a second polyether polyol, 50 parts of a modified second polyether polyol, 3 parts of water, 1 part of an antistatic agent, 1.1 parts of silicone oil, 0.15 part of an amine catalyst, 0.12 part of a gel catalyst and 39 parts of isocyanate.
8. A method of preparing an antistatic sponge for use in preparing an antistatic sponge according to any one of claims 1 to 7, comprising the steps of: taking the first polyether polyol, the second polyether polyol, the modified second polyether polyol, water, antistatic agent, silicone oil and catalyst, and stirring and uniformly mixing to obtain a mixture; taking isocyanate and adding the isocyanate into the mixed material, and rapidly stirring for 4-5s to obtain foaming slurry; pouring the foaming slurry into a mould for foaming; and curing for 24 hours at 25 ℃ after foaming is finished, and obtaining a finished product.
9. The method for preparing an antistatic sponge according to claim 8, wherein the temperature of the mixture and isocyanate before mixing is 23-25 ℃.
CN202310327954.2A 2023-03-30 2023-03-30 Antistatic sponge and preparation method thereof Pending CN116554427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310327954.2A CN116554427A (en) 2023-03-30 2023-03-30 Antistatic sponge and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310327954.2A CN116554427A (en) 2023-03-30 2023-03-30 Antistatic sponge and preparation method thereof

Publications (1)

Publication Number Publication Date
CN116554427A true CN116554427A (en) 2023-08-08

Family

ID=87493640

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310327954.2A Pending CN116554427A (en) 2023-03-30 2023-03-30 Antistatic sponge and preparation method thereof

Country Status (1)

Country Link
CN (1) CN116554427A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003865A1 (en) * 1981-04-25 1982-11-11 Gusthiot Andre Polyurethane foam
US5739173A (en) * 1990-10-26 1998-04-14 Basf Aktiengesellschaft Preparation of flame-resistant soft polyurethane foams of reduced smoke density, and melamine/expandable graphite/polyether-polyol dispersions for this purpose
JP2002293863A (en) * 2001-03-28 2002-10-09 Mitsui Chemicals Inc Flexible polyurethane foam and production method thereof
JP2003105050A (en) * 2001-09-28 2003-04-09 Mitsui Takeda Chemicals Inc Method for manufacturing flexible polyurethane foam
CN106889813A (en) * 2017-03-13 2017-06-27 匠仙(上海)床垫科技有限公司 Jing Yin sping mattress
CN109929085A (en) * 2019-03-26 2019-06-25 上海馨源新材料科技有限公司 Hydrophilic ventilative MDI memory foam of one kind and preparation method thereof
CN110452522A (en) * 2019-08-01 2019-11-15 无锡市井上海绵有限公司 A kind of effectively insulating insulating sponge
CN112048170A (en) * 2020-09-01 2020-12-08 山东亿博润新材料科技有限公司 Antistatic polyurethane sponge and preparation method and application thereof
CN113583205A (en) * 2021-06-29 2021-11-02 佳化化学科技发展(上海)有限公司 Slow-resilience sponge and preparation method and application thereof
CN113603861A (en) * 2021-08-12 2021-11-05 福州大学 Antistatic low-temperature-resistant slow-rebound polyurethane sponge material and preparation method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003865A1 (en) * 1981-04-25 1982-11-11 Gusthiot Andre Polyurethane foam
US5739173A (en) * 1990-10-26 1998-04-14 Basf Aktiengesellschaft Preparation of flame-resistant soft polyurethane foams of reduced smoke density, and melamine/expandable graphite/polyether-polyol dispersions for this purpose
JP2002293863A (en) * 2001-03-28 2002-10-09 Mitsui Chemicals Inc Flexible polyurethane foam and production method thereof
JP2003105050A (en) * 2001-09-28 2003-04-09 Mitsui Takeda Chemicals Inc Method for manufacturing flexible polyurethane foam
CN106889813A (en) * 2017-03-13 2017-06-27 匠仙(上海)床垫科技有限公司 Jing Yin sping mattress
CN109929085A (en) * 2019-03-26 2019-06-25 上海馨源新材料科技有限公司 Hydrophilic ventilative MDI memory foam of one kind and preparation method thereof
CN110452522A (en) * 2019-08-01 2019-11-15 无锡市井上海绵有限公司 A kind of effectively insulating insulating sponge
CN112048170A (en) * 2020-09-01 2020-12-08 山东亿博润新材料科技有限公司 Antistatic polyurethane sponge and preparation method and application thereof
CN113583205A (en) * 2021-06-29 2021-11-02 佳化化学科技发展(上海)有限公司 Slow-resilience sponge and preparation method and application thereof
CN113603861A (en) * 2021-08-12 2021-11-05 福州大学 Antistatic low-temperature-resistant slow-rebound polyurethane sponge material and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李绍雄: "《塑料助剂应用速查手册》", 31 May 2002, 化学工业出版社, pages: 134 *

Similar Documents

Publication Publication Date Title
CA1078099A (en) Gas-filled flexible microspheres in concrete
Liu et al. Thermoplastic starch/PVAl compounds: preparation, processing, and properties
CN110540627B (en) Polyurethane foam, preparation method and application in automobile headrest
CN105238061A (en) Foaming silicone rubber compound, low-density silicone rubber sponge and preparing method of low-density silicone rubber sponge
Chukhlanov et al. Elastic polyurethane foams modified by tetraethoxysilane
CN113956667B (en) Foaming silicone rubber and preparation method and application thereof
Luo et al. Effect of crosslinking agent on properties and morphology of water‐blown semirigid polyurethane foam
Ma et al. Preparation and characterization of water‐absorbing polyurethane foam composites with microsized sodium polyacrylate particles
CN116554427A (en) Antistatic sponge and preparation method thereof
CN111607118A (en) Manufacturing method of carbon fiber reinforced damping buffer material based on microcellular foaming technology
CN111154170A (en) EVA sole and preparation method thereof
CN105860249A (en) Lightweight polypropylene material containing microcapsule foaming agent
CN110964150A (en) Acrylamide-alginate sand-fixing water-retaining agent and preparation method thereof
CN110483691B (en) Terpolymer cross-linking agent and application thereof in preparation of cation membrane special for diffusion dialysis
JP3742724B2 (en) Packing material for polymer electrolyte fuel cell separator
KR20210008632A (en) Powder-based food composition for 3d printer and manufacturing method thereof
CN112480843B (en) Adhesive and preparation method thereof
CN115028949A (en) Light polyvinyl formal foam material with high water absorption rate
CN110819116A (en) Novel organic silicon rubber foam material and preparation method thereof
CN113292697A (en) Ultra-high density polyurethane soft foam and preparation method thereof
CN109096460B (en) Polyurethane elastomer for manufacturing foamed shoe material and preparation method thereof
KR20150129539A (en) Foam composition with excellent resilience
CN110204299B (en) Low-shrinkage high-strength aeolian sand roadbed material and preparation method thereof
CN116731377B (en) Antistatic sponge prepared from single-walled carbon nanotubes and preparation method thereof
TWI741941B (en) Bio-polyol composition, foam composition, and foam material

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination