Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

EPDM (ethylene propylene diene monomer) rubber sealing strip compatible with silicone rubber and productive technology thereof

A technology of EPDM rubber and silicone glue, which is applied in the field of EPDM rubber sealing strips, can solve the problem of the decrease of the bonding performance between silicone and curtain wall rubber strips and glass, the hardening and brittle sealing strips, and the Problems such as yellowing of the glue color, to achieve the effect of cost reduction, improvement of adhesive strength and prolongation of service life

Inactive Publication Date: 2011-08-10
宁波新安东橡塑制品有限公司
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthetic rubber produced by the usual process (such as EPDM, CR, etc.) will interact with silicone in contact. The symptoms are: the color of the silicone rubber turns yellow, the adhesive performance of silicone and curtain wall strips and glass is significantly reduced, and the sealing The rubber strip becomes hard and brittle. Since the rubber sealing strip of the conventional process is not compatible with silicone rubber, at present, silicone rubber is mainly used in China to replace synthetic rubber sealing strips or imported silicone rubber modified EPDM sealing strips to realize the compatibility with silicone rubber. The compatibility of ketone glue, so the mechanism of conventional EPDM sealing strip and silicone glue is studied, the composition and production process are changed, the compatibility of EPDM sealing strip and silicone glue is realized, and the adhesion of silicone glue to curtain wall strip and glass is improved. Strength extends sealant life

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • EPDM (ethylene propylene diene monomer) rubber sealing strip compatible with silicone rubber and productive technology thereof
  • EPDM (ethylene propylene diene monomer) rubber sealing strip compatible with silicone rubber and productive technology thereof
  • EPDM (ethylene propylene diene monomer) rubber sealing strip compatible with silicone rubber and productive technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Ingredients: According to the following composition ratio weight ingredients, take 100KG rubber compound as an example:

[0024]

[0025] Mixing: According to the technical requirements, put EPDM rubber, quick-extrusion carbon black, active filler, paraffin softener, hygroscopic agent and polyethylene glycol into a 55L bottom-opening internal mixer, and the pressure on the top bolt is 0.39 ~0.49MPa, under the condition of mixing temperature 110±5℃, the first mixing time is 280-300 seconds, then add sulfur, and under the same conditions, the second mixing time is 100-120 seconds;

[0026] Parking: Park the rubber compound obtained from mixing at room temperature 23°C and relative temperature 25% for 24 hours, and at the same time take samples from the rubber compound to test the hardness, tensile strength, elongation, specific gravity and Mooney viscosity. ;

[0027] Extrusion: TreeterΦ90 vacuum extruder, length-to-diameter ratio 1:20, set the temperature of the extr...

Embodiment 2

[0033] Ingredients: According to the following composition ratio weight ingredients, take 100KG rubber compound as an example:

[0034]

[0035] Mixing: According to the process requirements, 55L of EPDM rubber, quick extruded carbon black, active filler, white mineral oil, moisture absorbent and polyethylene glycol are thrown into the internal mixer, and the pressure of the top bolt is 0.39~0.49MPa, under the condition of mixing temperature 110±5℃, the first mixing time is 280-300 seconds, then add sulfur, under the same conditions, the second mixing time is 100-120 seconds;

[0036] Parking: Park the rubber compound obtained from mixing at room temperature 23°C and relative temperature 25% for 24 hours, and at the same time take samples from the rubber compound to test the hardness, tensile strength, elongation, specific gravity, Mooney viscosity and other items ;

[0037] Extrusion: TreeterΦ90 vacuum extruder, the ratio of length to diameter is 1:20, the temperature of ...

Embodiment 3

[0044] Ingredients: according to the following ingredients proportioning weight ingredients,

[0045] Take 100KG rubber compound as an example:

[0046]

[0047] Mixing: According to the technical requirements, put EPDM rubber, quick-extruded carbon black, active filler, white mineral oil, moisture absorbent and polyethylene glycol into a 55L bottom-opening internal mixer, and the pressure on the top bolt is 0.39 ~0.49MPa, under the condition of mixing temperature 100-110℃, the first kneading is 280-300 seconds, and then the double 25 is put in. Under the same conditions, the second kneading is 100-120 seconds;

[0048] Parking: Park the rubber compound obtained from mixing at room temperature 23°C and relative temperature 25% for 20-24H, and at the same time take samples from the masterbatch to measure hardness, tensile strength, elongation, specific gravity, Mooney viscosity, etc. project test

[0049] Extrusion: TreeterΦ90 vacuum extruder, the ratio of length to diamet...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Hardnessaaaaaaaaaa
Proportionaaaaaaaaaa
Login to View More

Abstract

The invention relates to an EPDM (ethylene propylene diene monomer) rubber sealing strip compatible with silicone rubber, which comprises the following components in percentage by weight: 25 to 30 percent of EPDM virgin rubber, 2 to 4 percent of vulcanizing agent, 3 to 5.8 percent of active filler, 35 to 40 percent of carbon black, 2 to 25 percent of softener, 1 to 2 percent of hygroscopic agent and 0.5 to 1 percent of polyethylene glycol, wherein the vulcanizing agent comprises sulphur or DBPMH; and the softener comprises paraffin or paraffin oil. A corresponding performance test carried out according to ASTMC1087 shows that under the condition of the same weighing and using amount of the raw materials, when the DBPMH is used as the vulcanizing agent and the paraffin oil is used as the softener, the compatibility and the ageing resistance are optimal and reach the grade of zero, and the color is not changed. Due to the adoption of the composition proportion and a productive technology of adopting the vulcanizing agent, the softener and peroxide to continuously vulcanize, the compatibility of the EPDM sealing rubber strip with the silicone rubber is good; the bonding strength of a silicone rubber strip and a curtain wall rubber strip to glass is improved and the service life of the EPDM sealing rubber strip is prolonged. Compared with the imported EPDM-S material rubber strip, the cost of the sealing strip of the product is reduced to half of the original cost.

Description

technical field [0001] The invention relates to a formula and a production process of a sealing strip for a curtain wall of a high-rise building, in particular to an EPDM rubber sealing strip and a production method thereof. Background technique [0002] In large-scale building curtain walls, silicone structural sealants and rubber sealing strips need to be used in large quantities to increase the structural firmness, air tightness, water tightness, heat insulation and sound insulation of the curtain wall. However, the synthetic rubber produced by the usual process (such as EPDM, CR, etc.) will interact with silicone in contact. The symptoms are: the color of the silicone rubber turns yellow, the adhesive performance of silicone and curtain wall strips and glass is significantly reduced, and the sealing The rubber strip becomes hard and brittle. Since the rubber sealing strip of the conventional process is not compatible with silicone rubber, at present, silicone rubber is m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K3/06C08K3/26C08K3/24
Inventor 俞泰山
Owner 宁波新安东橡塑制品有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com