Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material

A technology for the protection of cultural relic liner and foam material, which is applied in the field of silicone rubber foam material and its preparation, can solve the problems of large pore-forming agent consumption, low efficiency and high cost, and achieves the improvement of mechanical properties, control of reaction time, and uniform cells. Effect

Inactive Publication Date: 2015-12-23
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is inefficient, energy-intensive, and consumes a large amount of porogen
The patent application for "A Method for Preparing Silicone Rubber Foam Material by Supercritical Carbon Dioxide Technology" proposed by Song Lixian et al. obtained small-pore silicone rubber foam through supercritical carbon dioxide technology, but this preparation technology requires special process equipment and high cost

Method used

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  • Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material
  • Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material
  • Silicone rubber foam material suitable for cultural relic liner protection and preparation method of silicone rubber foam material

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Embodiment 1

[0030] A method for preparing a silicone rubber foam material suitable for cultural relics liner protection, the specific steps are as follows:

[0031] First, mix 100 parts of 107 liquid silicone rubber (viscosity 2000mPa / s) and 30 parts of diatomaceous earth evenly to obtain a masterbatch; then add 0.3 parts by weight of vinyl ring body V4 (vinyl concentration greater than 29% ), 0.4 parts of organoplatinum catalyst (platinum concentration 2000PPM), 5 parts of hydrogen-containing silicone oil (hydrogen value 0.7g), after high-speed stirring, pouring into a mold for foaming at room temperature to obtain the first product of silicone rubber foam material; The initial rubber foam material is vulcanized at 160°C for 2 hours to obtain figure 1 Silicone rubber foam material shown. The properties of silicone rubber foam materials are shown in Table 1.

Embodiment 2

[0033] A kind of preparation method of the silicon rubber foam material that is applicable to cultural relic liner protection, concrete steps are as follows: first, 100 parts of 107 liquid silicone rubber (viscosity 2000mPa / s), 10 parts of white carbon black are mixed uniformly, obtain masterbatch; Then Add 0.3 parts by weight of vinyl ring body V4 (vinyl concentration greater than 29%), 0.4 parts of organic platinum catalyst (platinum concentration 2000PPM), 5 parts of hydrogen-containing silicone oil (hydrogen value 0.7g) to the masterbatch, and stir evenly at high speed , poured into a mold for foaming at room temperature to obtain a primary silicone rubber foam material; finally, the primary silicone rubber foam material was vulcanized at 160° C. for 2 hours to obtain the silicone rubber foam material. The properties of silicone rubber foam materials are shown in Table 1.

Embodiment 3

[0035] A kind of preparation method of the silicon rubber foam material that is applicable to cultural relic liner protection, concrete steps are as follows: first, 100 parts of 108 liquid silicone rubber (viscosity 2000mPa / s), 10 parts of white carbon black are mixed evenly, obtain masterbatch; Then Add 0.3 parts by weight of vinyl ring body V4 (vinyl concentration greater than 29%), 0.4 parts of organic platinum catalyst (platinum concentration 2000PPM), 5 parts of hydrogen-containing silicone oil (hydrogen value 0.7g) to the masterbatch, and stir evenly at high speed , poured into a mold for foaming at room temperature to obtain a primary silicone rubber foam material; finally, the primary silicone rubber foam material was vulcanized at 160° C. for 2 hours to obtain the silicone rubber foam material. The properties of silicone rubber foam materials are shown in Table 1.

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Abstract

The invention discloses a silicone rubber foam material suitable for cultural relic liner protection and a preparation method of the silicone rubber foam material. The silicone rubber foam material is prepared from the following materials in parts by weight: 100 parts of liquid silicone rubber containing hydroxyl groups, 0-40 parts of a reinforcing agent, 0-10 parts of a blowing promoter, 0.2-0.6 part of an inhibitor, 0.3-0.8 part of a catalyst and 3-20 parts of hydrogen-containing silicone oil. The silicone rubber foam material does not release a harmful gas to cultural relics, and can play a blocking role on cultural relics and packaging materials; and the damages to the cultural relics caused by released substances of the packaging materials are reduced. The preparation method disclosed by the invention is controllable in condition, simple in technology and environmentally friendly.

Description

technical field [0001] The invention relates to the field of polymer material processing, in particular to a silicone rubber foam material and a preparation method thereof. Background technique [0002] In order to protect the safety of cultural relics during storage, packaging, and transportation, it is necessary to use flexible cushioning materials with damping and shock-absorbing functions in the cultural relics protection capsule to prevent damage to cultural relics due to external forces such as accidental drops and collisions. At present, the cultural relics protection bag box mainly uses cotton as the cushion material. Although cotton can protect cultural relics to a certain extent, cotton has poor moisture resistance, flame retardancy, and biological corrosion resistance, and its damping and shock absorption performance is not as good as rubber, which is not conducive to the long-term storage and protection of cultural relics. Silicone rubber has excellent propertie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08L83/05C08K3/34C08K3/36C08K5/053
Inventor 赵祺余凤湄赵秀丽余雪江刘涛贺江平王新峰王宪忠徐翔
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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