CN111909469B - Long-acting anti-static rubber pad - Google Patents
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/16—Layered products comprising a layer of natural or synthetic rubber comprising polydienes homopolymers or poly-halodienes homopolymers
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- C—CHEMISTRY; METALLURGY
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- C08L7/00—Compositions of natural rubber
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention relates to a long-acting anti-static rubber pad which comprises a static dissipation layer and/or a static conductive layer, wherein the static dissipation layer comprises the following raw material substances in parts by weight: ECO epichlorohydrin rubber, nitrile rubber, a plasticizer, silicon dioxide, zinc oxide, an anti-aging agent, a softener, sulfur and a first accelerator; the static conductive layer comprises the following raw materials in parts by weight: rubber, light calcium, superconducting carbon black, high-abrasion-resistance carbon black, a plasticizer, white factice, a second accelerator, zinc oxide, sulfur, a defoaming agent and a scorch retarder. The invention uses self-carried excellent static dissipative energyThe ECO epichlorohydrin rubber is a key raw material to realize the lasting antistatic performance, and the problem that the antistatic agent is easy to separate out due to environmental influence and the antistatic capacity is not long-lasting is solved. The volume resistance of the ECO epichlorohydrin rubber raw material can reach 106～108The ohms grade, the unique monomer structure and the ionic conduction mechanism of the rubber have good compatibility with various rubbers and resins.
Description
Technical Field
The invention relates to the field of polymer chemical materials, in particular to a long-acting anti-static rubber pad.
Background
The antistatic rubber pad is a common antistatic material in the industrial field, and is widely applied to the occasions such as a working table top, a ground, a goods shelf and the like in the fields of electronic and electrical industry, flammable and explosive hazardous chemicals and the like. However, the long-term problem of antistatic performance is always a problem of safety and long-term performance which is not negligible and needs to be considered urgently. Particularly, in the production and operation occasions of flammable and explosive hazardous chemicals, the field of aerospace military industry, scientific research institutes and other experimental places, a high-quality reliable new material which can effectively prevent static for a long time is particularly needed to ensure the effective safety protection of static for a long time.
At present, in the international and domestic industry fields, the static dissipation capability of 1 × 10E 6-1 × 10E9 ohm is usually realized by adopting a formula of adding an antistatic agent, but the antistatic agent serving as a surfactant is not completely compatible with rubber raw materials or resin raw materials and is gradually separated out along with time or environmental influence, so that the resistance is increased by more than 1 × 10E9 ohm.
Disclosure of Invention
The invention overcomes the defects in the prior art and provides the long-acting anti-static rubber pad with anti-static long-acting lasting capacity.
The specific technical scheme of the invention is as follows;
a long-acting antistatic rubber pad comprises a static dissipation layer and/or a static conductive layer,
the static dissipative layer comprises the following raw materials in parts by weight: 20-40% of ECO epichlorohydrin rubber, 20-40% of nitrile butadiene rubber, 3-15% of plasticizer, 15-30% of silicon dioxide, 1-3% of zinc oxide, 0.5-2% of anti-aging agent, 0.5-2% of softener, 0.1-1% of sulfur and 2-12% of first accelerator;
the static conductive layer comprises the following raw materials in parts by weight: 20-60% of rubber, 10-60% of light calcium carbonate, 1-10% of superconducting carbon black, 0-15% of high wear-resistant carbon black, 1-15% of plasticizer, 5-10% of white factice, 1-8% of second accelerator, 0.5-3% of zinc oxide, 0.1-1% of sulfur, 0.1-0.5% of defoaming agent and 0.1-0.3% of anti-scorching agent.
Preferably, the static dissipative layer comprises the following raw materials in parts by weight:
20-40% of ECO epichlorohydrin rubber, 20-40% of nitrile rubber, 3-15% of plasticizer, 15-30% of silicon dioxide, 1-3% of zinc oxide, 0.5-2% of anti-aging agent, 0.5-2% of softener, 0.1-1% of sulfur and 2-12% of first accelerator;
the static conductive layer comprises the following raw materials in parts by weight: 20 to 60 percent of rubber, 10 to 60 percent of light calcium carbonate, 1 to 10 percent of superconducting carbon black, 0.1 to 1 percent of high wear-resistant carbon black, 1 to 15 percent of plasticizer, 5 to 10 percent of white factice, 1 to 8 percent of second accelerant, 0.5 to 3 percent of zinc oxide, 0.1 to 1 percent of sulfur, 0.1 to 0.5 percent of defoaming agent and 0.1 to 0.3 percent of anti-scorching agent.
Preferably, the rubber is nitrile rubber to increase the oil resistance of the whole material and better high and low temperature resistance.
Preferably, the rubber is composed of natural rubber and styrene butadiene rubber according to a weight ratio of 2: 1-2.
Preferably, the first accelerator is a mixture of an MB accelerator, an MBT accelerator, a CZ accelerator, a DM accelerator, a TT accelerator, a PEG4000 accelerator, and a CTP accelerator in any proportion.
Preferably, the second accelerator is a mixture of SA accelerator, CZ accelerator, DM accelerator, TT accelerator, AO accelerator, CB accelerator, PZ accelerator, and M accelerator at an arbitrary ratio.
Preferably, the plasticizer is TP95 plasticizer or SD-02 plasticizer.
Preferably, the long-acting antistatic rubber pad consists of an upper static dissipative layer and a lower static conductive layer.
Preferably, the thickness of the static dissipation layer is 0.3 mm-2 mm, and the thickness of the static conductive layer is 1 mm-8 mm; the static dissipation layer can control excessive static generation and automatically dissipate partial surface static to the air, and redundant static can be transmitted to the static conduction layer through the static dissipation layer, so that the safe release of the static is realized through the external reliable grounding body.
Preferably, the long-acting anti-static rubber pad consists of an upper static dissipation layer, a middle static conductive layer and a lower static dissipation layer.
Preferably, the long-acting antistatic rubber pad is of a 4-layer structure consisting of a static dissipation layer and a static conductive layer at intervals.
The ECO epichlorohydrin rubber has a unique monomer structure, an ethylene oxide unit is arranged on a high molecular framework of the ECO epichlorohydrin rubber, and the following main monomers are adopted:
epichlorohydrin (ECH): polarity, heat resistance and chemical corrosion resistance.
Ethylene Oxide (EO): static dissipative properties, elasticity, low temperature properties.
AGE: provides double bonds of side chains, low temperature performance and better ozone resistance.
The ECO epichlorohydrin rubber with excellent static dissipation capacity is innovatively used as a key raw material to realize the permanent antistatic performance, a formula system for realizing the static dissipation capacity by adding an antistatic agent is replaced, and the problem that the antistatic capacity is not long-lasting due to the fact that the antistatic agent is easily separated out under the influence of the environment is solved. The volume resistance of the ECO epichlorohydrin rubber raw material can reach 106～108The ohm's class, the mechanism of ionic conduction, can realize that the molecular main chain of the ECO epichlorohydrin rubber polymer can allow electron migration without adding any additive or chemical, thereby achieving static dissipation and realizing permanent antistatic performance.
Because the ECO epichlorohydrin rubber with excellent static dissipation capacity is used as a key raw material, the duration time of the antistatic performance of the rubber is consistent with the normal service life of the rubber pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of the present invention. The prior art does not mention the part of the invention.
The long-acting antistatic rubber pad is prepared by adopting a conventional method in the field.
Example 1
The long-acting antistatic rubber pad consists of an upper static dissipative layer of 0.5mm and a lower static conductive layer of 1.5 mm:
the static dissipative layer is composed of the following raw materials in parts by weight:
30% of ECO epichlorohydrin rubber, 25% of nitrile rubber, 10% of TP95 plasticizer, 25% of silicon dioxide, 1.5% of zinc oxide, 1% of anti-aging agent, 1% of softener, 0.5% of sulfur and 6% of first accelerator;
the static conductive layer is composed of the following raw materials in parts by weight: 50% of nitrile rubber, 15% of light calcium, 5% of superconducting carbon black, 10% of high-wear-resistance carbon black, 10% of TP95 plasticizer, 7% of white factice, 7% of second accelerator, 2.5% of zinc oxide, 0.5% of sulfur, 0% of defoaming agent and 0% of scorch retarder.
The first accelerator is prepared by mixing a DM accelerator, a PEG4000 accelerator, a TT accelerator, a CZ accelerator, an M accelerator and a CTP accelerator according to the weight ratio of 4:4:3:2:1: 1; the second accelerator is prepared by mixing a CZ accelerator, a DM accelerator, an AO accelerator, an SA accelerator, a TT accelerator, a PZ accelerator and an M accelerator according to the weight ratio of 4:4:3:2:2:2: 2.
Example 2
The utility model provides a long-term antistatic rubber pad comprises 1mm upper surface static dissipation layer and 2mm lower surface static layer:
the static dissipative layer is composed of the following raw materials in parts by weight: 20% of ECO epichlorohydrin rubber, 30% of nitrile rubber, 12% of TP95 plasticizer, 30% of silicon dioxide, 3% of zinc oxide, 0.6% of anti-aging agent, 2% of softener, 0.4% of sulfur and 2% of first accelerator;
the static conductive layer is composed of the following raw materials in parts by weight: 25% of rubber, 55% of light calcium, 4% of superconducting carbon black, 4% of high-wear-resistance carbon black, 4% of SD-02 plasticizer, 9% of white factice, 1% of second accelerator, 1% of zinc oxide, 0.6% of sulfur, 0.2% of defoaming agent and 0.2% of anti-scorching agent.
The first accelerator is prepared by mixing a DM accelerator and a PEG4000 accelerator according to a weight ratio of 1:1, the rubber is prepared by mixing natural rubber and styrene butadiene rubber according to a weight ratio of 2:1, and the second accelerator is prepared by mixing an SA accelerator, a CZ accelerator, a DM accelerator, an AO accelerator and a TT accelerator according to a weight ratio of 8:6:6:3: 1.
Example 3
The utility model provides a long-term antistatic rubber pad comprises 2mm upper surface static dissipation layer and 3mm lower surface static layer:
the static dissipative layer is composed of the following raw materials in parts by weight: 37% of ECO epichlorohydrin rubber, 20% of nitrile rubber, 13% of TP95 plasticizer, 15% of silicon dioxide, 1% of zinc oxide, 1.5% of anti-aging agent, 0.5% of softening agent, 1% of sulfur and 11% of first accelerator;
the static conductive layer is composed of the following raw materials in parts by weight: 50% of rubber, 10% of light calcium carbonate, 8% of superconducting carbon black, 12% of high wear-resistant carbon black, 1% of SD-02 plasticizer, 8% of white factice, 7.2% of second accelerator, 2% of zinc oxide, 1% of sulfur, 0.5% of defoaming agent and 0.3% of anti-scorching agent.
The rubber is prepared by mixing natural rubber and styrene butadiene rubber according to a weight ratio of 5:4, the first accelerator is prepared by mixing PEG4000 accelerator and CTP accelerator according to a weight ratio of 2:1, and the second accelerator is prepared by mixing SA accelerator, CZ accelerator and DM accelerator according to a weight ratio of 1:1: 1.
We have selected domestic similar mainstream products and products made by the embodiments, and have selected three testing environments which are easy to denature rubber materials: the anti-static long-acting lasting performance is verified by a hot air aging test at 70 hours/125 ℃, an Ultraviolet (UV) resistance test for 27 days and a test in an oil environment for 72 hours, and the obtained data also proves the superiority of the long-acting anti-static rubber pad prepared by the invention. See table 1 for details: "long-lasting durability of antistatic ability under different environments is compared with a test".
TABLE 1 comparison test of the long-term durability of antistatic ability in different environments
The addition of the ECO epichlorohydrin rubber can also improve the heat resistance, solvent resistance, chemical corrosion resistance, oil resistance, ultraviolet resistance and ozone resistance of the antistatic rubber pad, and has strong mechanical property and elasticity. In addition, the environment-friendly and non-toxic rubber plasticizer SD-02 and the ether ester type plasticizer TP95 are selected, so that the overall high-temperature and low-temperature resistance stability of the rubber pad is further enhanced, and the effects of shortening the plasticizing time and enhancing the plasticizing effect in the rubber production process can be achieved. The anti-static rubber pad compares domestic similar main abortion products through rubber physical property experiments conducted by a third party, and the obtained data also proves the superiority of the anti-static rubber pad. See in particular table 2.
TABLE 2TRANSCOL antistatic ECO crude rubber pad physical property comparison (thickness 2mm)
In conclusion, due to the adoption of the technical scheme, the antistatic agent is abandoned, and the epichlorohydrin rubber with excellent electrostatic dissipation capacity is added, so that the long-term durability of the antistatic capacity of the antistatic rubber is greatly improved, and the antistatic rubber is suitable for large-scale application and popularization, and is particularly suitable for flammable and explosive fields with high effective requirements on the antistatic durability, the military aerospace field, the high and new technology field, the scientific research institution field and the like.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (9)
1. The long-acting anti-static rubber pad is characterized by comprising a static dissipation layer and a static conductive layer, wherein the static dissipation layer comprises the following raw materials in parts by weight: 20-40% of ECO epichlorohydrin rubber, 20-40% of nitrile rubber, 3-15% of plasticizer, 15-30% of silicon dioxide, 1-3% of zinc oxide, 0.5-2% of anti-aging agent, 0.5-2% of softener, 0.1-1% of sulfur, 2-12% of first accelerator and no antistatic agent;
the static conductive layer comprises the following raw materials in parts by weight: 20-60% of rubber, 10-60% of light calcium carbonate, 1-10% of superconducting carbon black, 0-15% of high wear-resistant carbon black, 1-15% of plasticizer, 5-10% of white factice, 1-8% of second accelerator, 0.5-3% of zinc oxide, 0.1-1% of sulfur, 0.1-0.5% of defoaming agent and 0.1-0.3% of anti-scorching agent.
2. The long-acting antistatic rubber pad of claim 1 is characterized in that the static dissipation layer comprises the following raw materials in parts by weight: 20-40% of ECO epichlorohydrin rubber, 20-40% of nitrile rubber, 3-15% of plasticizer, 15-30% of silicon dioxide, 1-3% of zinc oxide, 0.5-2% of anti-aging agent, 0.5-2% of softener, 0.1-1% of sulfur, 2-12% of first accelerator and no antistatic agent;
the static conductive layer comprises the following raw materials in parts by weight: 20 to 60 percent of rubber, 10 to 60 percent of light calcium carbonate, 1 to 10 percent of superconducting carbon black, 0.1 to 1 percent of high wear-resistant carbon black, 1 to 15 percent of plasticizer, 5 to 10 percent of white factice, 1 to 8 percent of second accelerator, 0.5 to 3 percent of zinc oxide, 0.1 to 1 percent of sulfur, 0.1 to 0.5 percent of defoaming agent and 0.1 to 0.3 percent of anti-scorching agent.
3. The long-acting antistatic rubber pad of claim 1 or 2 wherein the rubber is nitrile rubber.
4. The long-acting antistatic rubber pad as claimed in claim 1 or 2, wherein the rubber is composed of natural rubber and styrene butadiene rubber in a weight ratio of 2: 1-2.
5. The long-acting antistatic rubber pad of claim 1 or 2 wherein the first accelerator is a mixture of MB accelerator, MBT accelerator, CZ accelerator, DM accelerator, TT accelerator, PEG4000 accelerator, CTP accelerator in any proportion.
6. The long-acting antistatic rubber pad of claim 1 or 2 wherein the second accelerator is a mixture of SA accelerator, CZ accelerator, DM accelerator, TT accelerator, AO accelerator, CB accelerator in any proportion.
7. The long-acting antistatic rubber pad as claimed in claim 1 or 2, wherein the plasticizer is TP95 plasticizer or SD-02 plasticizer.
8. The long-acting antistatic rubber pad as claimed in claim 1 or 2, which is composed of an upper static dissipative layer and a lower static conductive layer.
9. The long-acting antistatic rubber pad of claim 8, wherein the thickness of the static dissipation layer is 0.3mm to 2mm, and the thickness of the static conductive layer is 1mm to 8 mm.
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| CN112757725B (en) * | 2020-12-28 | 2022-08-23 | 湖南省益思迪科技有限公司 | Sensitive element antistatic pad |
| CN113583317A (en) * | 2021-08-03 | 2021-11-02 | 无锡二橡胶股份有限公司 | Production formula of rubber roller for lyocell fiber spinning |
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