CN115322458B - Environment-friendly rubber-plastic heat-insulating material and preparation method thereof - Google Patents
Environment-friendly rubber-plastic heat-insulating material and preparation method thereof Download PDFInfo
- Publication number
- CN115322458B CN115322458B CN202211253805.8A CN202211253805A CN115322458B CN 115322458 B CN115322458 B CN 115322458B CN 202211253805 A CN202211253805 A CN 202211253805A CN 115322458 B CN115322458 B CN 115322458B
- Authority
- CN
- China
- Prior art keywords
- rubber
- foaming
- environment
- parts
- plastic heat
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
- C08J9/105—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0028—Use of organic additives containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/02—Copolymers with acrylonitrile
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use 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; Derivatives of such polymers
- C08J2427/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K3/2279—Oxides; Hydroxides of metals of antimony
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/39—Thiocarbamic acids; Derivatives thereof, e.g. dithiocarbamates
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/548—Silicon-containing compounds containing sulfur
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an environment-friendly rubber-plastic heat-insulating material and a preparation method thereof, and relates to the technical field of environment-friendly heat-insulating materials. The environment-friendly rubber-plastic heat-insulating material comprises nitrile rubber, polyvinyl chloride, chlorinated polyethylene, chlorinated paraffin oil, epoxidized soybean oil, aluminum hydroxide, a foaming agent, urea grease, carbon black, an organic silicon modifier, antimony trioxide, solid paraffin, stearic acid, polyethylene glycol, sulfur, an anti-aging agent and a vulcanization accelerator. The invention takes nitrile rubber, polyvinyl chloride and chlorinated polyethylene as framework materials, 4-oxo-diphenyl sulfonyl hydrazide as a foaming agent, urea resin as a foaming auxiliary agent, organic silicon as a modifier, and combines a flame retardant, a filler, an accelerant and a special preparation process to obtain the environment-friendly rubber-plastic heat-insulating material which has good heat-insulating property and does not release carbon monoxide in a finished product.
Description
Technical Field
The invention relates to the technical field of environment-friendly heat-insulating materials, in particular to an environment-friendly rubber-plastic heat-insulating material and a preparation method thereof.
Background
With the continuous deepening of the concepts of energy conservation, emission reduction and green development, people have higher and higher requirements on the performance of NBR/PVC rubber-plastic heat insulation materials. Wherein, the foaming agent is one of the most main factors influencing the performance of the NBR/PVC rubber-plastic heat-insulation material. Generally, the rubber and plastic heat insulation material mainly uses an organic foaming agent, and Azodicarbonamide (AC) is the most commonly used, mainly because the AC foaming agent has the advantages of no toxicity, no smell, good stability, high gas evolution and the like. However, researches show that azodicarbonamide can be decomposed to generate nitrogen, ammonia gas and carbon monoxide in the foaming process, and other byproducts such as hydrocyanic acid, urazole and the like are generated, and the prepared finished heat insulation material can release carbon monoxide in a high-temperature environment. Meanwhile, the foaming by-products of azodicarbonamide are left in processing machinery, which can affect the normal operation of machinery and the quality of foaming products, and the generated ammonia gas and carbon monoxide volatilize into the air, thus being harmful to the human health and causing serious environmental pollution. Therefore, how to provide a new environment-friendly rubber-plastic heat insulation material is a technical problem to be solved urgently in the field.
Disclosure of Invention
In order to solve the problems, the invention provides an environment-friendly rubber-plastic heat-insulating material and a preparation method thereof. The environment-friendly rubber-plastic heat-insulating material comprises the following components in parts by weight:
rubber: 8 to 13 parts; polyvinyl chloride: 5 to 8 parts; chlorinated polyethylene: 5 to 8 parts; chlorinated paraffin oil: 17 to 20 parts; epoxidized soybean oil: 0.8 to 1.5 portions; aluminum hydroxide: 22 to 25 parts; foaming agent: 11 to 14 parts; foaming auxiliary agent: 5 to 7 parts; carbon black: 1.2 to 2 parts; silicone modifier: 5 to 9 parts; antimony trioxide: 4 to 6 parts; solid paraffin: 0.5 to 1 part; stearic acid: 0.1 to 0.45 portion; polyethylene glycol: 0.3 to 0.6 portion; sulfur: 0.2 to 0.5 portion; an anti-aging agent: 0.02 to 0.06 parts; vulcanization accelerator (b): 1.5 to 3.2 parts; the foaming auxiliary agent is urea resin.
The rubber is one or more of nitrile rubber, chloroprene rubber, styrene butadiene rubber and ethylene propylene diene monomer rubber, the foaming agent is 4, 4-oxybisbenzenesulfonyl hydrazide, the foaming auxiliary agent is urea resin, the organosilicon modifier is one or more of gamma-mercaptopropyltriethoxysilane, aminopropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and aniline methyltriethoxysilane, the anti-aging agent is one or more of an anti-aging agent 4020 (N- (1, 3-dimethyl) butyl-N' -phenyl-p-phenylenediamine), an anti-aging agent RD (2, 4-trimethyl-1, 2-dihydroquinoline polymer) and an anti-aging agent MBZ (2-mercaptobenzimidazole zinc salt), and the vulcanization accelerator is one or more of an accelerator M (mercaptobenzothiazole), an accelerator BZ (di-N-butyldithiocarbamate), an accelerator PZ (zinc dimethyldithiocarbamate) and an accelerator DPTT (dipentamethylenethiuram tetrasulfide).
Further, the mass ratio of the foaming agent to the foaming auxiliary agent is 2 to 2.8 and 0.8 to 1.5.
The invention also aims to provide a preparation method of the environment-friendly rubber-plastic heat-insulating material, which comprises the following steps:
a) Mixing rubber, polyvinyl chloride, chlorinated polyethylene, epoxidized soybean oil, carbon black, an organic silicon modifier, antimony trioxide, solid paraffin, stearic acid, polyethylene glycol and an anti-aging agent in an internal mixer, adding a first part of aluminum hydroxide and a first part of chlorinated paraffin oil, internally mixing for 2 to 3 min, then adding a second part of aluminum hydroxide and a second part of chlorinated paraffin, continuously internally mixing for 7 to 9 min, discharging rubber after the rubber mixing temperature reaches 165 to 175 ℃, slicing and cooling after open mixing to obtain a material No. 1, cooling the material No. 1, stacking for 48h, and using;
b) Adding sulfur, a vulcanization accelerator, a foaming agent and a foaming auxiliary agent into the obtained material No. 1, mixing uniformly by open mill, and slicing to obtain a material No. 2;
c) And cooling the material No. 2, extruding in an extruder to obtain molding glue, then freely foaming in a foaming furnace, and cooling to obtain the environment-friendly rubber-plastic heat-insulating material.
Further, the mass ratio of the first part of aluminum hydroxide to the second part of aluminum hydroxide is 1.
And further, discharging the rubber after the rubber mixing temperature reaches 168-173 ℃.
Further, the thickness of the No. 1 material rubber sheet is 8-10 mm, the width is 400-600 mm, the length is 600-800 mm, the thickness of the No. 2 material rubber sheet is 8-10 mm, the width is 150-250 mm, and the length is 13000-15000mm.
Further, the temperature of the feeding section of the extruder is 15 to 20 ℃; the temperature of the plasticizing section is 22 to 25 ℃; the temperature of the machine head section is 25 to 30 ℃.
Further, the free foaming process comprises the following steps: placing the molding compound in a foaming furnace, and sequentially carrying out foaming treatment in 7 zones, wherein the transmission speed of one zone is 1.3-1.55 m/min, the temperature is 80-90 ℃, the transmission speed of the second zone is 1.4-1.7 m/min, the temperature is 80-90 ℃, the transmission speed of the third zone is 1.55-2.6 m/min, the temperature is 90-100 ℃, the transmission speed of the fourth zone is 2.5-3.7 m/min, the temperature is 110-130 ℃, the transmission speed of the fifth zone is 3.2-4.5 m/min, the temperature is 130-145 ℃, the transmission speed of the sixth zone is 3.8-6.1 m/min, the temperature is 155-160 ℃, the transmission speed of the seventh zone is 4.4-7.7 m/min, and the temperature is 165-175 ℃.
Further, after the free foaming, the molding compound further comprises the steps of cooling, cutting and packaging, and specifically comprises the following steps: cooling the product formed in the foaming furnace by air cooling through a transmission mesh belt, wherein the cooling distance is 60-80 m, feeding the cooled product to a cutting machine for cutting, adjusting the speed of the cutting machine to be consistent with that of a cooling conveying belt, adjusting an automatic meter counter, cutting according to the required size of the product, and packaging and warehousing.
The main gas component decomposed by the foaming agent OBSH is stable, a product with a good cellular structure can be obtained, and the foaming agent is the first choice for producing high-quality rubber products. At present, OBSH is mainly used for producing EPDM weather strips, butadiene rubber damping products, chloroprene rubber heat-insulating products and other fields, but is rarely used in rubber and plastic products. The reason for this is that OBSH has poor dispersibility in rubber matrices and is subject to a sudden decomposition and adverse reaction with the dicumyl peroxide (DCP) crosslinking agents currently used. Therefore, the application of the OBSH in the continuous extrusion vulcanization foaming production is rare, and how to apply the OBSH to the rubber matrix foaming process is a technical problem to be solved in the field.
In order to overcome the problems, the invention adopts the urea resin as the foaming auxiliary agent, improves the decomposition burst of the foaming agent OBSH and effectively reduces the decomposition temperature of the foaming agent OBSH. Meanwhile, an organic silicon modifier is introduced, and the low surface energy characteristic of organic silicon is utilized to improve the high temperature resistance, water resistance, air permeability, mechanical properties and the like of the product. Finally, the functional group siloxane (such as hydroxyl, amino, vinyl or epoxy) of the organosilicon is used as a cross-linking agent to react with terminal-CN on a rubber molecular chain to generate terminal silane, so that the siloxane is enriched on the surface of the rubber, the rubber is blended more uniformly, the vulcanization and foaming processes can be effectively promoted, and the surface flatness of the product is improved.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention takes nitrile rubber, polyvinyl chloride and chlorinated polyethylene as framework material raw materials, 4-oxo-diphenyl sulfonyl hydrazide as a foaming agent, urea resin as a foaming auxiliary agent, organic silicon as a modifier, and a flame retardant, a filler, an accelerant and the like are combined to obtain the environment-friendly rubber-plastic heat-insulating material which has good heat insulating property and does not release carbon monoxide in a finished product.
Detailed Description
The invention provides an environment-friendly rubber-plastic heat insulation material which comprises the following components in parts by weight:
rubber: 8 to 13 parts; polyvinyl chloride: 5 to 8 parts; chlorinated polyethylene: 5 to 8 parts; chlorinated paraffin oil: 17 to 20 parts; epoxidized soybean oil: 0.8 to 1.5 portions; aluminum hydroxide: 22 to 25 parts; foaming agent: 11 to 14 parts; foaming auxiliary agent: 5 to 7 parts; carbon black: 1.2 to 2 parts; silicone modifier: 5 to 9 parts; antimony trioxide: 4 to 6 parts; solid paraffin: 0.5 to 1 part; stearic acid: 0.1 to 0.45 portion; polyethylene glycol: 0.3 to 0.6 portion; sulfur: 0.2 to 0.5 part; an anti-aging agent: 0.02 to 0.06 portion; vulcanization accelerator (b): 1.5 to 3.2 parts; the foaming auxiliary agent is urea resin.
In one embodiment, the rubber is one or more of nitrile rubber, chloroprene rubber, styrene butadiene rubber and ethylene propylene diene monomer rubber, the foaming agent is 4, 4-oxybis benzenesulfonylhydrazide, the foaming auxiliary agent is urea resin, the organosilicon modifier is one or more of gamma-mercaptopropyltriethoxysilane, aminopropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and aniline methyl triethoxysilane, the anti-aging agent is one or more of an anti-aging agent 4020 (N- (1, 3-dimethyl) butyl-N' -phenyl-p-phenylenediamine), an anti-aging agent RD (2, 4-trimethyl-1, 2-dihydroquinoline polymer) and an anti-aging agent MBZ (2-mercaptobenzimidazole zinc salt), and the vulcanization accelerator is one or more of an accelerator M (mercaptobenzothiazole), an accelerator BZ (zinc di-N-butyldithiocarbamate), an accelerator PZ (zinc dimethyldithiocarbamate) and an accelerator DPTT (dipentamethylenethiuram tetrasulfide).
In one embodiment, the mass ratio of the foaming agent to the foaming auxiliary agent is 2 to 2.8 and is 0.8 to 1.5.
The invention also aims to provide a preparation method of the environment-friendly rubber-plastic heat-insulating material, which comprises the following steps:
a) Putting nitrile rubber, polyvinyl chloride, chlorinated polyethylene, epoxidized soybean oil, carbon black, an organic silicon modifier, antimony trioxide, solid paraffin, stearic acid, polyethylene glycol and an anti-aging agent into an internal mixer for mixing, adding a first part of aluminum hydroxide and a first part of chlorinated paraffin oil, carrying out internal mixing for 2 to 3 min, then adding a second part of aluminum hydroxide and a second part of chlorinated paraffin, carrying out internal mixing for 7 to 9 min, discharging rubber after the rubber mixing temperature reaches 165 to 175 ℃, slicing and cooling after open mixing to obtain a material No. 1, cooling the material No. 1, stacking for 48h, and using;
b) Adding sulfur, a vulcanization accelerator, a foaming agent and a foaming auxiliary agent into the obtained material No. 1, and after open milling and uniform mixing, slicing to obtain a material No. 2;
c) And cooling the material No. 2, extruding in an extruder to obtain molding glue, then freely foaming in a foaming furnace, and cooling to obtain the environment-friendly rubber-plastic heat-insulating material.
In one embodiment, the mass ratio of the first part of aluminum hydroxide to the second part of aluminum hydroxide is 1.
In one embodiment, rubber is discharged after the rubber mixing temperature reaches 168-173 ℃.
In one embodiment, the No. 1 stock film is 8-10 mm thick, 400-600 mm wide and 600-800 mm long, and the No. 2 stock film is 8-10 mm thick, 150-250 mm wide and 13000-15000 mm long.
In one embodiment, the extruder feed zone temperature is from 15 to 20 ℃; the temperature of a plasticizing section is 22 to 25 ℃; the temperature of the machine head section is 25 to 30 ℃.
In one embodiment, the free-foaming process is: placing the molding compound in a foaming furnace, and sequentially carrying out foaming treatment in 7 zones, wherein the transmission speed of one zone is 1.3-1.55 m/min, the temperature is 80-90 ℃, the transmission speed of the second zone is 1.4-1.7 m/min, the temperature is 80-90 ℃, the transmission speed of the third zone is 1.55-2.6 m/min, the temperature is 90-100 ℃, the transmission speed of the fourth zone is 2.5-3.7 m/min, the temperature is 110-130 ℃, the transmission speed of the fifth zone is 3.2-4.5 m/min, the temperature is 130-145 ℃, the transmission speed of the sixth zone is 3.8-6.1 m/min, the temperature is 155-160 ℃, the transmission speed of the seventh zone is 4.4-7.7 m/min, and the temperature is 165-175 ℃.
In one embodiment, the molding compound further comprises the steps of cooling, cutting and packaging after the free foaming is completed, and the steps specifically comprise: cooling the product formed in the foaming furnace by air cooling through a transmission mesh belt, wherein the cooling distance is 60-80 m, feeding the cooled product to a cutting machine for cutting, adjusting the speed of the cutting machine to be consistent with that of a cooling conveying belt, adjusting an automatic meter counter, cutting according to the required size of the product, and packaging and warehousing.
The technical solution provided by the present invention is further illustrated by the following examples.
Example 1
An environment-friendly rubber-plastic heat insulation material comprises the following raw materials in parts by weight:
nitrile rubber: 9.45 parts of polyvinyl chloride: 6.75 parts, chlorinated polyethylene: 7.54 parts, aluminum hydroxide: 24.4 parts, foaming agent OBSH:12 parts of urea resin: 5.4 parts, antimony trioxide: 5.0 parts, chlorinated paraffin oil: 17.5 parts, epoxidized soybean oil: 1.08 parts of solid paraffin: 0.58 part, gamma-mercaptopropyltriethoxysilane: 5.45 parts of stearic acid: 0.26 part, polyethylene glycol: 0.54 part, carbon black: 1.75 parts, anti-aging agent 4020:0.04 parts, sulfur: 0.26 part of accelerator M:0.11 part, accelerator BZ:0.06 part, accelerator PZ:1.23 parts, accelerator DPTT:0.6 part.
The preparation method of the environment-friendly rubber-plastic heat insulation material comprises the following steps:
(1) Weighing raw materials according to a proportion, and dividing aluminum hydroxide and chlorinated paraffin into two parts, wherein the mass ratio of the first part of aluminum hydroxide to the second part of aluminum hydroxide is 1.
Putting nitrile rubber, polyvinyl chloride, chlorinated polyethylene, epoxidized soybean oil, carbon black, an organic silicon modifier, antimony trioxide, solid paraffin, stearic acid, polyethylene glycol and an anti-aging agent which are weighed according to a proportion into an internal mixer for mixing, adding a first part of aluminum hydroxide and a first part of chlorinated paraffin for internal mixing for 2.5 min, then adding a second part of aluminum hydroxide and a second part of chlorinated paraffin, continuing internal mixing for 7 min, and discharging rubber after the rubber mixing temperature reaches 168 ℃; discharging the rubber compound onto an open mill, carrying out open milling, slicing and cooling to obtain a material No. 1;
the thickness of the No. 1 material film is 8-10 mm, the width is 400-600 mm, and the length is 600-800 mm;
(2) Adding the weighed vulcanizing agent, vulcanization accelerator, foaming agent OBSH and urea resin into the obtained material No. 1, mixing uniformly by open mill, and slicing to obtain a material No. 2;
the thickness of the No. 2 material film is 8 to 10 mm, the width is 150 to 250 mm, and the length is 13000 to 15000mm;
(3) And (3) extruding and molding the material No. 2 in an extruder, wherein the parameters of the extruder are as follows: the feeding section is 15 ℃, the plasticizing section is 20 ℃, and the machine head section is 25 ℃;
(4) And then foaming, wherein the foaming is to place the formed film extruded by an extruder in a foaming furnace, and perform foaming treatment sequentially through 7 foaming zones, wherein the propagation speed of the first zone is 1.2 m/min, the propagation speed of the second zone is 1.35 m/min, the propagation speed of the third zone is 1.55 m/min, the propagation speed of the fourth zone is 2.4 m/min, the propagation speed of the fifth zone is 3.0 m/min, the propagation speed of the sixth zone is 3.8 m/min, the propagation speed of the seventh zone is 4.45 m/min, the foaming furnace is controlled by dividing the temperature into 7 zones, and the temperature of each zone of the foaming furnace is respectively: the first zone is 82 +/-2 ℃, the second zone is 82 +/-2 ℃, the third zone is 95 +/-2 ℃, the fourth zone is 112 +/-2 ℃, the fifth zone is 132 +/-2 ℃, the sixth zone is 158 +/-2 ℃ and the seventh zone is 168 +/-2 ℃;
(5) Cooling the product: cooling the product formed in the foaming furnace by air cooling through a transmission mesh belt, wherein the cooling distance is 80 meters;
(6) Cutting and packaging: and (3) feeding the cooled product to a cutting machine for cutting, adjusting the speed of the cutting machine to be consistent with that of the cooling conveying belt, adjusting an automatic meter counter, cutting according to the required size of the product, packaging and warehousing.
Example 2
An environment-friendly rubber-plastic heat insulation material comprises the following raw materials by weight:
nitrile butadiene rubber: 9.1, polyvinyl chloride: 6.8; chlorinated polyethylene: 7.35, aluminum hydroxide: 23.8, foaming agent OBSH:12.25, urea resin: 6.4, antimony trioxide: 5.0, chlorinated paraffin oil: 17.7, epoxidized soybean oil: 1.05, paraffin wax: 0.55, γ -mercaptopropyltriethoxysilane: 5.35, stearic acid: 0.26, polyethylene glycol: 0.52, carbon black: 1.62, antioxidant 4020:0.03, sulfur: 0.26, accelerator M:0.12, accelerator BZ:0.06, accelerator PZ:1.2, accelerator DPTT:0.58.
the preparation method of the environment-friendly rubber-plastic heat insulation material comprises the following steps:
(1) Weighing raw materials according to a proportion, and dividing aluminum hydroxide and chlorinated paraffin into two parts, wherein the mass ratio of the first part of aluminum hydroxide to the second part of aluminum hydroxide is 1;
proportionally weighing nitrile rubber, polyvinyl chloride, chlorinated polyethylene, epoxidized soybean oil, carbon black, an organic silicon modifier, antimony trioxide, solid paraffin, stearic acid, polyethylene glycol and an anti-aging agent, putting the mixture into an internal mixer, mixing the mixture, adding a first part of aluminum hydroxide and a first part of chlorinated paraffin, carrying out internal mixing for 3 min, then adding a second part of aluminum hydroxide and a second part of chlorinated paraffin, continuing the internal mixing for 6.5 min, and discharging rubber after the rubber mixing temperature reaches 170 ℃. Discharging the rubber compound onto an open mill, carrying out open milling, slicing and cooling to obtain a material No. 1;
the thickness of the No. 1 material film is 8-10 mm, the width is 400-600 mm, and the length is 600-800 mm;
(2) Adding the weighed vulcanizing agent, vulcanization accelerator, foaming agent OBSH and urea resin into the obtained material No. 1, mixing uniformly by open mill, and slicing to obtain a material No. 2;
the thickness of the No. 2 material film is 8-10 mm, the width is 150-250 mm, and the length is 13000-15000mm;
(3) And (3) extruding and molding the material No. 2 in an extruder, wherein the parameters of the extruder are as follows:
a feeding section at 17 ℃; a plasticizing stage of 22 ℃; nose section 25 deg.C
(4) And then foaming, wherein the foaming is to place the formed film extruded by an extruder in a foaming furnace and perform foaming treatment in 7 foaming zones in sequence, wherein the propagation speed of the first zone is 1.3 m/min, the propagation speed of the second zone is 1.4 m/min, the propagation speed of the third zone is 1.55 m/min, the propagation speed of the fourth zone is 2.55 m/min, the propagation speed of the fifth zone is 3.2 m/min, the propagation speed of the sixth zone is 3.9 m/min, the propagation speed of the seventh zone is 4.6 m/min, the foaming furnace is controlled by 7 zones according to temperature, and the temperature of each zone of the foaming furnace is respectively: the first zone is 88 +/-2 ℃, the second zone is 85 +/-2 ℃, the third zone is 95 +/-2 ℃, the fourth zone is 118 +/-2 ℃, the fifth zone is 135 +/-2 ℃, the sixth zone is 160 +/-2 ℃ and the seventh zone is 170 +/-2 ℃;
(5) And (3) cooling the product: cooling the product formed in the foaming furnace by air cooling through a transmission mesh belt, wherein the cooling distance is 80 m;
(6) Cutting and packaging: and (3) feeding the cooled product to a cutting machine for cutting, adjusting the speed of the cutting machine to be consistent with that of the cooling conveying belt, adjusting an automatic meter counter, cutting according to the required size of the product, packaging and warehousing.
Example 3
An environment-friendly rubber-plastic heat insulation material comprises the following raw materials by weight:
nitrile rubber: 8.85, polyvinyl chloride: 6.4, chlorinated polyethylene: 7.0, aluminum hydroxide: 23.5, foaming agent OBSH:14.0, urea resin: 7.3, antimony trioxide: 4.8, chlorinated paraffin oil: 17.35, epoxidized soybean oil: 0.98, paraffin wax: 0.5, γ -mercaptopropyltriethoxysilane: 5.1, stearic acid: 0.25, polyethylene glycol: 0.48, carbon black: 1.6, antioxidant 4020:0.03, sulfur: 0.25, accelerator M:0.1, accelerator BZ:0.05, accelerator PZ:0.95, accelerator DPTT:0.51.
the preparation method of the environment-friendly rubber-plastic heat insulation material comprises the following steps:
(1) Weighing raw materials according to a proportion, and dividing aluminum hydroxide and chlorinated paraffin into two parts, wherein the mass ratio of the first part of aluminum hydroxide to the second part of aluminum hydroxide is 1;
putting nitrile rubber, polyvinyl chloride, chlorinated polyethylene, epoxidized soybean oil, carbon black, an organic silicon modifier, antimony trioxide, solid paraffin, stearic acid, polyethylene glycol and an anti-aging agent which are weighed according to a certain proportion into an internal mixer for mixing, adding a first part of aluminum hydroxide and a first part of chlorinated paraffin for internal mixing for 3 min, then adding a second part of aluminum hydroxide and a second part of chlorinated paraffin, continuing internal mixing for 7 min, and discharging rubber after the rubber mixing temperature reaches 172 ℃; discharging the rubber compound onto an open mill, and slicing and cooling the rubber compound after open milling to obtain a material No. 1;
the thickness of the No. 1 material film is 8 to 10 mm, the width is 400 to 600 mm, and the length is 600 to 800 mm;
(2) Adding the weighed vulcanizing agent, vulcanization accelerator, foaming agent OBSH and urea resin into the obtained material No. 1, mixing uniformly by open mill, and slicing to obtain a material No. 2;
the thickness of the No. 2 material film is 8-10 mm, the width is 150-250 mm, and the length is 13000-15000mm;
(3) And (3) extruding and molding the material No. 2 in an extruder, wherein the parameters of the extruder are as follows: the feeding section is 20 ℃, the plasticizing section is 25 ℃, and the machine head section is 28 ℃;
(4) And then foaming, wherein the foaming is to place the formed film extruded by an extruder in a foaming furnace and perform foaming treatment through 7 foaming zones in sequence, wherein the propagation speed of the first zone is 1.5 m/min, the propagation speed of the second zone is 1.6 m/min, the propagation speed of the third zone is 2.3 m/min, the propagation speed of the fourth zone is 3.1 m/min, the propagation speed of the fifth zone is 3.5 m/min, the propagation speed of the sixth zone is 4.2 m/min, the propagation speed of the seventh zone is 5.8 m/min, the foaming furnace is controlled by 7 zones according to temperature, and the temperature of each zone of the foaming furnace is respectively: the first zone is 90 +/-2 ℃, the second zone is 90 +/-2 ℃, the third zone is 100 +/-2 ℃, the fourth zone is 120 +/-2 ℃, the fifth zone is 140 +/-2 ℃, the sixth zone is 162 +/-2 ℃ and the seventh zone is 172 +/-2 ℃;
(5) Cooling the product: cooling the product formed in the foaming furnace by air cooling through a transmission mesh belt, wherein the cooling distance is 80 meters;
(6) Cutting and packaging: and (3) feeding the cooled product to a cutting machine for cutting, adjusting the speed of the cutting machine to be consistent with that of the cooling conveyor belt, adjusting an automatic meter counter, cutting according to the required size of the product, packaging and warehousing.
Comparative example 1
According to the technical scheme recorded in the embodiment 3, urea resin is removed, the consumption of the foaming agent OBSH is changed to 21.3, and other processes are not changed, so that the rubber-plastic heat-insulating material is prepared.
Comparative example 2
According to the technical scheme described in the embodiment 3, foaming agents OBSH and urea resin are removed, a foaming agent AC18 is added, and the rest processes are unchanged, so that the rubber and plastic heat insulation material is prepared.
Comparative example 3
According to the technical scheme recorded in the embodiment 3, the rubber-plastic heat-insulating material is prepared by removing gamma-mercaptopropyltriethoxysilane and keeping the rest processes unchanged.
The same detection method is adopted to detect the performance of the rubber and plastic heat-insulating materials prepared in the examples 1-3 and the comparative examples 1-3, and the results are as follows:
| example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Apparent density (kg/m) 3 ） | 72.3 | 70.2 | 67.8 | 69.8 | 65.8 | -- |
| Thermal conductivity at 25 ℃ (w/m & K) | 0.0336 | 0.0335 | 0.0332 | 0.0335 | 0.0332 | -- |
| Surface condition of the skin | Has smooth surface | Has smooth surface | Has smooth surface | Rough surface | Has smooth surface | Not molded, surface foamed |
| Carbon monoxide Release amount (ppm) | 0 | 0 | 0 | 0 | 856 | -- |
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The environment-friendly rubber-plastic heat-insulating material is characterized by comprising the following components in parts by weight:
rubber: 8 to 13 parts; polyvinyl chloride: 5 to 8 parts; chlorinated polyethylene: 5 to 8 parts; chlorinated paraffin oil: 17 to 20 parts; epoxidized soybean oil: 0.8 to 1.5 portions; aluminum hydroxide: 22 to 25 parts; foaming agent: 11 to 14 parts; foaming auxiliary agent: 5 to 7 parts; carbon black: 1.2 to 2 parts; organic silicon modifier: 5 to 9 parts; antimony trioxide: 4 to 6 parts; solid paraffin: 0.5 to 1 part; stearic acid: 0.1 to 0.45 portion; polyethylene glycol: 0.3 to 0.6 portion; sulfur: 0.2 to 0.5 portion; an anti-aging agent: 0.02 to 0.06 parts; vulcanization accelerator (b): 1.5 to 3.2 parts; the foaming auxiliary agent is urea resin;
the rubber is nitrile rubber, the foaming agent is 4, 4-oxybis-benzenesulfonylhydrazide, and the organosilicon modifier is one or more of gamma-mercaptopropyltriethoxysilane, aminopropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and aniline methyl triethoxysilane.
2. The environment-friendly rubber-plastic heat-insulating material as claimed in claim 1, wherein the antioxidant is one or more of antioxidant 4020, antioxidant RD and antioxidant MBZ, and the vulcanization accelerator is one or more of accelerator M, accelerator BZ, accelerator PZ and accelerator DPTT.
3. The environment-friendly rubber-plastic heat-insulating material as claimed in claim 1, wherein the mass ratio of the foaming agent to the foaming auxiliary agent is 2 to 2.8.
4. The preparation method of the environment-friendly rubber-plastic heat insulation material according to any one of claims 1 to 3, which is characterized by comprising the following steps:
a) Mixing rubber, polyvinyl chloride, chlorinated polyethylene, epoxidized soybean oil, carbon black, an organic silicon modifier, antimony trioxide, solid paraffin, stearic acid, polyethylene glycol and an anti-aging agent in an internal mixer, adding a first part of aluminum hydroxide and a first part of chlorinated paraffin oil, internally mixing for 2 to 3 min, then adding a second part of aluminum hydroxide and a second part of chlorinated paraffin oil, continuously internally mixing for 7 to 9 min, discharging rubber after the rubber mixing temperature reaches 165 to 175 ℃, slicing and cooling after open mixing to obtain a material No. 1, cooling the material No. 1, stacking for 48h, and using;
b) Adding sulfur, a vulcanization accelerator, a foaming agent and a foaming auxiliary agent into the material No. 1, and after the materials are mixed uniformly by open mill, slicing to obtain a material No. 2;
c) And cooling the material No. 2, extruding in an extruder to obtain molding glue, then freely foaming in a foaming furnace, and cooling to obtain the environment-friendly rubber-plastic heat-insulating material.
5. The method for preparing the environment-friendly rubber-plastic heat insulation material according to claim 4, wherein the mass ratio of the first part of aluminum hydroxide to the second part of aluminum hydroxide is 1.
6. The preparation method of the environment-friendly rubber-plastic heat-insulating material as claimed in claim 4, wherein rubber is discharged after the rubber mixing temperature reaches 168-173 ℃.
7. The method for preparing the environment-friendly rubber-plastic heat-insulating material as claimed in claim 4, wherein the thickness of the No. 1 material film is 8 to 10 mm, the width is 400 to 600 mm, the length is 600 to 800 mm, the thickness of the No. 2 material film is 8 to 10 mm, the width is 150 to 250 mm, and the length is 13000 to 15000mm.
8. The preparation method of the environment-friendly rubber-plastic heat insulation material as claimed in claim 4, wherein the temperature of the feeding section of the extruder is 15 to 20 ℃; the temperature of the plasticizing section is 22 to 25 ℃; the temperature of the nose section is 25 to 30 ℃.
9. The preparation method of the environment-friendly rubber-plastic heat insulation material according to claim 4, wherein the free foaming process comprises the following steps: placing the molding compound in a foaming furnace, and sequentially carrying out foaming treatment in 7 zones, wherein the transmission speed of one zone is 1.3-1.55 m/min, the temperature is 80-90 ℃, the transmission speed of the second zone is 1.4-1.7 m/min, the temperature is 80-90 ℃, the transmission speed of the third zone is 1.55-2.6 m/min, the temperature is 90-100 ℃, the transmission speed of the fourth zone is 2.5-3.7 m/min, the temperature is 110-130 ℃, the transmission speed of the fifth zone is 3.2-4.5 m/min, the temperature is 130-145 ℃, the transmission speed of the sixth zone is 3.8-6.1 m/min, the temperature is 155-160 ℃, the transmission speed of the seventh zone is 4.4-7.7 m/min, and the temperature is 165-175 ℃.
10. The preparation method of the environment-friendly rubber-plastic heat-insulating material according to claim 4, wherein the molding compound is subjected to free foaming and then further comprises the steps of cooling, cutting and packaging, and specifically comprises the following steps: cooling the product formed in the foaming furnace by air cooling through a transmission mesh belt, wherein the cooling distance is 60-80 m, feeding the cooled product to a cutting machine for cutting, adjusting the speed of the cutting machine to be consistent with that of a cooling conveying belt, adjusting an automatic meter counter, cutting according to the required size of the product, and packaging and warehousing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211253805.8A CN115322458B (en) | 2022-10-13 | 2022-10-13 | Environment-friendly rubber-plastic heat-insulating material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211253805.8A CN115322458B (en) | 2022-10-13 | 2022-10-13 | Environment-friendly rubber-plastic heat-insulating material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115322458A CN115322458A (en) | 2022-11-11 |
| CN115322458B true CN115322458B (en) | 2023-01-06 |
Family
ID=83913430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211253805.8A Active CN115322458B (en) | 2022-10-13 | 2022-10-13 | Environment-friendly rubber-plastic heat-insulating material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115322458B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116622134B (en) * | 2023-07-24 | 2023-10-10 | 华美节能科技集团有限公司 | Low-resistance Wen Xiangsu heat-insulating material prepared from natural rubber |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004168825A (en) * | 2002-11-18 | 2004-06-17 | Nishikawa Rubber Co Ltd | Rubber foamed material and method for producing the same |
| CN101255242A (en) * | 2008-04-14 | 2008-09-03 | 常州市天晟塑胶化工有限公司 | Butadiene styrene rubber foaming plate and preparation thereof |
| CN102002193A (en) * | 2010-11-19 | 2011-04-06 | 四川宏亿复合材料工程技术有限公司 | Foamed rubber plate and manufacturing process thereof |
| CN102675879A (en) * | 2012-05-09 | 2012-09-19 | 常州大学 | Silicone rubber foam material and preparation method thereof |
| CN103102605A (en) * | 2013-03-07 | 2013-05-15 | 中国皮革和制鞋工业研究院 | Environmentally-friendly ultralight flame-retardant rubber sole material and manufacturing method thereof |
| CN104945746A (en) * | 2015-05-27 | 2015-09-30 | 天津固特金属制品有限公司 | Environment-friendly elastic rubber sealing strip for fireproof doors/windows |
| CN106519408A (en) * | 2016-10-08 | 2017-03-22 | 宁波高新区万盟新材料科技有限公司 | Environment-friendly foaming material taking OBSH as foaming agent and preparation method thereof |
| WO2018130196A1 (en) * | 2017-01-13 | 2018-07-19 | 杭州星庐科技有限公司 | Rubber composite, applications in foamed product, and manufacturing method |
| CN109206686A (en) * | 2018-07-14 | 2019-01-15 | 桂林理工大学 | A kind of nitrile rubber-metal composite sealing material and preparation method thereof |
| CN113308118A (en) * | 2021-04-08 | 2021-08-27 | 苏州歌诗夫新材料有限公司 | Environment-friendly foaming flame-retardant silicon rubber material and preparation method thereof |
-
2022
- 2022-10-13 CN CN202211253805.8A patent/CN115322458B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004168825A (en) * | 2002-11-18 | 2004-06-17 | Nishikawa Rubber Co Ltd | Rubber foamed material and method for producing the same |
| CN101255242A (en) * | 2008-04-14 | 2008-09-03 | 常州市天晟塑胶化工有限公司 | Butadiene styrene rubber foaming plate and preparation thereof |
| CN102002193A (en) * | 2010-11-19 | 2011-04-06 | 四川宏亿复合材料工程技术有限公司 | Foamed rubber plate and manufacturing process thereof |
| CN102675879A (en) * | 2012-05-09 | 2012-09-19 | 常州大学 | Silicone rubber foam material and preparation method thereof |
| CN103102605A (en) * | 2013-03-07 | 2013-05-15 | 中国皮革和制鞋工业研究院 | Environmentally-friendly ultralight flame-retardant rubber sole material and manufacturing method thereof |
| CN104945746A (en) * | 2015-05-27 | 2015-09-30 | 天津固特金属制品有限公司 | Environment-friendly elastic rubber sealing strip for fireproof doors/windows |
| CN106519408A (en) * | 2016-10-08 | 2017-03-22 | 宁波高新区万盟新材料科技有限公司 | Environment-friendly foaming material taking OBSH as foaming agent and preparation method thereof |
| WO2018130196A1 (en) * | 2017-01-13 | 2018-07-19 | 杭州星庐科技有限公司 | Rubber composite, applications in foamed product, and manufacturing method |
| CN109206686A (en) * | 2018-07-14 | 2019-01-15 | 桂林理工大学 | A kind of nitrile rubber-metal composite sealing material and preparation method thereof |
| CN113308118A (en) * | 2021-04-08 | 2021-08-27 | 苏州歌诗夫新材料有限公司 | Environment-friendly foaming flame-retardant silicon rubber material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115322458A (en) | 2022-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108034094B (en) | Rubber-plastic heat-insulating material without elemental sulfur and preparation method thereof | |
| CN108424660B (en) | Rubber-plastic heat-insulating material without dioctyl phthalate and preparation method thereof | |
| CN101824189B (en) | Preparation process of ethylene propylene diene rubber foaming materials | |
| CN102775652B (en) | Thermoplastic elastomer micropore foaming material and preparation method thereof | |
| CN1687206A (en) | Technique for producing freerise foaming material of rubber | |
| CN115322458B (en) | Environment-friendly rubber-plastic heat-insulating material and preparation method thereof | |
| CN111320821A (en) | Low-density Ethylene Propylene Diene Monomer (EPDM) extruded sponge material and preparation method thereof | |
| CN1800255A (en) | Open-cell foam of ethylene-propylene-diene rubber | |
| CN105566721B (en) | A kind of high temperature resistant XPE foams and preparation method thereof | |
| CN107841020B (en) | Crosslinked polyethylene foam material and preparation method thereof | |
| CN103087361A (en) | Blown rubber for thick product and variable temperature mould pressing preparation method thereof | |
| CN109294015B (en) | Continuous pore rubber-plastic slow-resilience foam material and preparation method thereof | |
| CN111154193A (en) | Flame-retardant elastic rubber-plastic wave heat-insulation board and preparation method thereof | |
| CN103029255B (en) | The preparation method of EPDM mold pressing sponge rubber and the preparation method of special-shaped sponge sheath | |
| CN104829887A (en) | Sealing strip material and preparation method thereof | |
| CN106147036A (en) | The expanded material of a kind of recyclable recycling and manufacture method thereof | |
| CN112552562A (en) | Ultralow temperature resistant rubber foam material and preparation method thereof | |
| CN111138767B (en) | Weighted and hardened open-cell EPDM rubber blending molding repeated high-rate foaming backing plate and preparation method thereof | |
| CN114933753A (en) | Preparation method of electron cross-linked radiation polyethylene conductive foam | |
| WO2012122727A1 (en) | Microwave continuous foaming plate of tire reclaimed rubber and preparation method thereof | |
| CN110698712B (en) | Preparation method of XPE foaming agent | |
| CN111269492A (en) | Polypropylene and polyethylene copolymer foam composition and preparation method thereof | |
| CN114015131A (en) | Preparation process of novel rubber-plastic material with low density and high elasticity | |
| CN103642080B (en) | Natural rubber sponge with high compressive load retention rate and preparation method thereof | |
| CN205467415U (en) | Foam pad production line |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |