Preparation method of silicone rubber sponge

A silicone rubber and sponge technology, applied in the field of silicone rubber sponge, can solve the problems of uneven foam density, thick skin, harmful environment, etc., and achieve the effect of excellent mechanical properties, small and uniform cells, and simple crosslinking method

Inactive Publication Date: 2016-04-13
CHANGZHOU JUNCHENG MACHINERY
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: the decomposition of the chemical foaming agent used in the preparation process of the traditional silicone rubber sponge will produce toxic by-products harmful to the environment, and the density of the foam is uneven and the skin is thick, while the commonly used peroxidized When cross-linking with vulcanizing agent, a large number of small molecules remain in the rubber compound, which is easy to cause yellowing of silicone rubber and shorten the service life. A preparation method of silicone rubber sponge is provided. First, add rosin and trotter horn Alkaline saponification mixed solution, then mixed with bone glue solution to get rosin protein glue foaming solution, mixing organic silicon rubber raw material, white carbon black and nano-silica,

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] First, weigh 20g of rosin and 10g of pig's trotter horns and put them in a stone mortar, crush them with a stone pestle, mix the crushed rosin and pig's trotter horn fragments, put them into a corundum mortar and grind them into powder, and get the mixed powder for later use. Then measure 1 L of caustic soda solution with a concentration of 1 mol / L, heat it to boiling, slowly add 30 g of the mixed powder under constant stirring, and continue to boil for 2 hours to obtain a saponified mixed solution; weigh 5 g of bone glue and pour it into 100 mL of distilled water with a temperature of 50 °C Soak for 20 hours in the water to form a bone glue solution, and then drop 50 mL of the bone glue solution into the above saponified mixture drop by drop, control the dripping speed to make it dropwise within 20 minutes, and heat the water bath to 60 ° C and stir for 1 hour to obtain a rosin protein glue foaming solution. , standby; add 500g organic silicone rubbe...

Example Embodiment

[0024] Example 2

[0025]First, weigh 25g of rosin and 13g of pig's trotter horn and put them into a stone mortar, smash them with a stone pestle, mix the smashed rosin and pig's trotter horn fragments, put them into a corundum mortar and grind them into powder, and get the mixed powder for later use. Then measure 1.5L of caustic soda solution with a concentration of 1mol / L, heat it to boiling, slowly add 35g of mixed powder under constant stirring, continue to boil for 3h to obtain a saponified mixed solution; weigh 8g of bone glue and pour it into 150mL at a temperature of 55°C Soak in distilled water for 22 hours to form a bone glue solution, then drop 75 mL of the bone glue solution into the above saponified mixture drop by drop, control the dripping speed to make the dropwise addition completed within 25 minutes, and heat the water bath to 65 ° C and stir for 1.5 hours to obtain rosin protein glue. Bubble liquid and set aside; add 550g organic silicone rubber raw material...

Example Embodiment

[0029] Example 3

[0030] First, weigh 30g of rosin and 15g of pig's trotter horns and put them into a stone mortar, crush them with a stone pestle, mix the crushed rosin and pig's trotter horn fragments, put them into a corundum mortar and grind them into powder, and get the mixed powder for later use. Then measure 2L of caustic soda solution with a concentration of 1mol / L, heat it to boiling, slowly add 40g of mixed powder under constant stirring, and continue to boil for 4h to obtain a saponified mixed solution; weigh 10g of bone glue and pour it into 200mL of distilled water with a temperature of 60°C Soak for 24 hours in the water to form a bone glue solution, then drop 100 mL of the bone glue solution into the above saponification mixture dropwise, control the dripping speed to make the dropwise addition completed within 30 minutes, and heat the water bath to 70 ° C and stir for 2 hours to obtain a rosin protein glue foaming solution. , standby; add 600g organic silicone...

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
Apertureaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Apertureaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a silicone rubber sponge, and belongs to the field of silicone rubber sponges. The preparation method includes the steps that alkali is added in rosin and pig's hooves to obtain a saponified mixed solution, the saponified mixed solution is then mixed with a bone glue solution to obtain a rosin albumin glue foaming solution, raw organic silicon rubber, white carbon black and nano-silica are subjected to mixing, then placed in a press vulcanizer for radiation crosslinking vulcanization and then transferred into a double-roll open mill, the rosin albumin glue foaming solution and hydrogen-containing silicone oil are added for foaming to obtain a silicone rubber sponge rubber material, and finally extrusion and granulation are carried out to obtain the silicone rubber sponge. The biological foaming agent prepared through the method is free of undesirable odors, toxins and pollution, emits little heat when decomposed and has storage stability; through radiation crosslinking vulcanization, the silicone rubber material has a proper crosslinking degree, and cells of the prepared silicone rubber sponge are small and uniform; by adding white carbon black, the cell diameter of silicone rubber can be reduced, the tensile strength can be improved, and the compression set can be reduced.

Description

technical field [0001] The invention discloses a preparation method of a silicone rubber sponge, which belongs to the field of silicone rubber sponges. Background technique [0002] Silicone rubber has typical polysiloxane properties, the main chain is composed of repeated Si-O bonds, and the combination is very firm, making silicone rubber heat-resistant, weather-resistant, oxidation-resistant, flame-retardant, radiation-resistant and physiologically inert. The use of foaming method can improve the compressibility of silicone rubber and reduce production costs. The foamed silicone rubber sponge not only has a lower density, but also has excellent shock absorption, sound insulation, and heat insulation. It is widely used in aerospace, electronic and electrical, automotive, construction, instrumentation, medical and health industries, etc. . Rubber sponge extrusion molding is a continuous molding method with a high degree of automation, which is characterized by high effici...

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): C08L83/04C08L83/05C08L93/04C08L89/04C08L89/00C08K3/36C08J9/04B29C47/92B29C35/08B29C48/92
CPCC08L83/04B29C35/0866B29C48/92B29C2035/0877B29C2948/92704C08J9/0061C08J9/04C08J2205/044C08J2383/04C08K2201/011C08K2201/014C08L2203/14C08L2205/02C08L2205/025C08L2205/035C08L93/04C08L89/04C08L89/00C08K3/36
Inventor 裴俊王志慧林大伟
Owner CHANGZHOU JUNCHENG MACHINERY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap