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Method for preparing nano silicate fiber and rubber composite material

A technology of nano-silicate and composite materials, which is applied in the field of preparing nano-silicate fibers and rubber composite materials, can solve the problems of high cost and complicated process, and achieve the effect of low cost, mature technology and remarkable performance

Inactive Publication Date: 2006-05-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For nano-reinforcement, although the in-situ polymerization method is used to disperse FS in the polymer matrix as uniformly as possible in the form of nano-units, so as to prepare polymer-based nanocomposites and significantly improve the performance of polymers, this method is complex and costly.

Method used

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  • Method for preparing nano silicate fiber and rubber composite material
  • Method for preparing nano silicate fiber and rubber composite material
  • Method for preparing nano silicate fiber and rubber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Dry treatment of FS: pre-mix 100gFS in a high-speed mixer for 5min to make it fluffy, then add modifier: a mixed solution of 0.5g silane coupling agent Si69 and 2.5ml ethanol, stir for 10min, and make Mix the modifier and FS evenly, and then add the release agent: 10g of sulfonated castor oil, mix evenly, and dry at 82°C for 2 hours to obtain the modified FS with fine particles of 5-40μm.

[0033] On the double-roll mill, add 100g of natural rubber for mastication, then add activator: 7g of zinc oxide and 3g of stearic acid, accelerator: 0.5g each of DM and CZ, then add 50g of the above-mentioned modified FS, and finally add vulcanization Agent: sulfur 2g, mixed evenly to obtain rubber compound. The mixed rubber was vulcanized at 140°C to obtain a composite material of nano-silicate fiber and natural rubber, and its mechanical properties are shown in Table 1.

Embodiment 2

[0034] Example 2 On-site treatment of FS: Add release agent: 400g styrene-butadiene rubber to a 1.0L internal mixer, masticate for 30 seconds, add 400gFS and modifier: 80g silane coupling agent KH570, knead at 130°C for 5min A modified FS was obtained.

[0035] Add 100g of styrene-butadiene rubber to the double-roll mill for masticating, then add 40g of the above-mentioned modified FS, and then add vulcanizing agent: 0.8g of dicumyl peroxide, and mix evenly to obtain a rubber compound. Finally, it was vulcanized at 160°C to obtain a composite material of nano-silicate fiber and styrene-butadiene rubber. The mechanical properties are shown in Table 1, and the transmission electron microscope photos are shown in figure 1 . From figure 1 It can be seen that the modified FS obtained by on-site treatment can be dissociated into fibers with a diameter of less than 100 nm and uniformly dispersed in the styrene-butadiene rubber, and the dispersibility of the modified FS is very good...

Embodiment 3

[0036] Example 3 Dry treatment of FS: The treatment process is the same as in Example 1, except for the modifier: the amount and type of silane coupling agent are the same as in Example 2, and the release agent is 5 g of castor oil.

[0037] The preparation process of the composite material is the same as in Example 2, and its mechanical properties are shown in Table 1. Transmission electron microscope pictures see figure 1 . It can be seen from Table 1 that the composite material has high hardness, 100% modulus stress, tensile strength, tear strength and high elongation, which are equivalent to the mechanical properties of the composite material obtained in Example 2. From figure 2 It can be seen that the modified FS obtained by dry treatment can be dissociated into fibers with a diameter of less than 100 nm and uniformly dispersed in the styrene-butadiene rubber, and the dispersibility of the modified FS is very good.

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Abstract

The invention relates to a manufacturing method for nm ceramic fiber and rubber compounding material. In the manufacturing process of modification natural needle shaped silicate, the dry method process or filed process is adopted. And the usage of modification agent is about 0.5-20% compared to natural needle shape silicate, and the insulator is only 0.5-50% compared to natural needle shape silicate. The basic composition is rubber 100 mass portions, modified natural needle silicate 10-120 portions, activator 3-10 portions, accelerator 1-3 portions, vulcanizing agent 0.5-12 portions. The invention is low cost and has good dispersibility in rubber.

Description

technical field [0001] The invention relates to a method for preparing nano silicate fiber and rubber composite material by using modified acicular silicate and rubber by means of a melt blending method. Background technique [0002] Rubber must be reinforced to have excellent performance. High-efficiency reinforcement of rubber materials must be nano-reinforced or micro-reinforced with a large shape factor ratio. Nano-carbon black, nano-silica, organic short fibers, etc. can effectively reinforce rubber, but the fly in the ointment is that carbon black depends on petroleum resources; silica is expensive, even if it is modified with a silane coupling agent, its The reinforcement performance is still inferior to that of carbon black; and the organic short fiber has a thick diameter and requires a large aspect ratio for reinforcement, so the processing fluidity of the composite material is very poor, the appearance of the product is not exquisite, and the price of the organic...

Claims

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Application Information

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IPC IPC(8): C08K9/00C08K3/34C08L7/00C08L9/00C08L11/00C08L23/16
Inventor 田明程丽君张立群梁文利
Owner BEIJING UNIV OF CHEM TECH
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