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Silicon rubber compound added with modified nano calcium carbonate and preparing method thereof

A technology of nano-calcium carbonate and compound rubber, which is applied in the field of organic silicon materials, can solve the problems of increasing processing costs and increasing production processes, and achieve the effects of reducing raw material costs, improving demoulding pass rate, and good performance

Inactive Publication Date: 2015-12-23
YICHANG XINGZHIXIN PLASTIC ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this patent is that the production process of the product is flexible and changeable, and it is easy to adjust the product rubber ratio according to the actual situation of the product. The disadvantage is that the primer and masterbatch are separately configured, which increases the production process and increases the processing cost.

Method used

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  • Silicon rubber compound added with modified nano calcium carbonate and preparing method thereof
  • Silicon rubber compound added with modified nano calcium carbonate and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] According to the composition ratio in Table 1, 100 parts of methyl vinyl silicone rubber raw rubber 110-2, 55 parts of precipitated silica, 5 parts of modified nano-calcium carbonate, 8 parts of hydroxyl silicone oil, 4 parts of vinyl Add silicone oil, 2.5 parts of polyether modified silicone oil, 0.5 parts of zinc stearate, and 0.5 parts of methyl silicone oil into the kneader. After kneading for 6 minutes, add 2 parts of hydrogen-containing silicone oil, and initially knead (50°C, speed 30r / min , 2h) After uniformity, high-temperature mixing for 1h (120°C, vacuum degree of -0.05MPa, 30r / min), and then opening the late stage of mixing for 0.5h (rotational speed 45r / min) and then discharging, cooling, re-milling, The rubber compound product can be obtained by filtering the rubber. Then vulcanize the sheet, test various properties, the product test results are shown in Table 3.

Embodiment 2

[0036] According to the composition ratio in Table 1, 50 parts of methyl vinyl silicone rubber raw rubber 110-1, 50 parts of methyl vinyl silicone rubber raw rubber 110-3, 50 parts of precipitated silica, 10 parts of modified Add nano-calcium carbonate, 6 parts of diphenylsilanediol, 3 parts of vinyl silicone oil, 1.5 parts of polyether modified silicone oil, and 1 part of methylphenyl silicone oil into the kneader. After mixing for 10 minutes, add 1.5 parts of hydrogen-containing Silicone oil, after preliminary mixing (50°C, speed 30r / min, 2h), after uniformity, high temperature mixing for 1h (120°C, vacuum degree -0.05MPa, 30r / min), and then open the cover and later mixing for 0.5h (speed 45r / min) after discharge, cooling, re-milling, and filtering the rubber to obtain the mixed rubber product. Then vulcanize the sheet, test various properties, the product test results are shown in Table 3.

Embodiment 3

[0038] According to the component ratio in Table 1, 100 parts of methyl vinyl silicone rubber raw rubber 110-2, 45 parts of precipitated white carbon black, 15 parts of modified nano calcium carbonate, 4 parts of hexamethyldisilazane , 2 parts of vinyl silicone oil, 3.5 parts of polyether modified silicone oil, 1.5 parts of liquid silicone rubber, and 0.5 parts of zinc stearate were added to the kneader, and after kneading for 8 minutes, 1 part of hydrogen-containing silicone oil was added for preliminary mixing (50°C, Rotational speed 30r / min, 2h) after uniformity, high temperature mixing 1h (120 ℃, vacuum degree -0.05MPa, 30r / min), and then open the cover later mixing 0.5h (rotational speed 45r / min) after discharge, after cooling , re-milling, and filtering the rubber to obtain the mixed rubber product. Then vulcanize the sheet, test various properties, the product test results are shown in Table 3.

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Abstract

The invention relates to the field of organosilicon materials, in particular to a silicon rubber compound added with modified nano calcium carbonate and a preparing method thereof. The silicon rubber compound is prepared from, by weight, 95-110 parts of methyl vinyl silicone rubber, 10-60 parts of precipitation method white carbon black, 5-60 parts of modified nano calcium carbonate, 1-10 parts of structural agents A, 0.5-5 parts of vinyl silicone oil, 0.5-5 parts of polyether-modified silicone oil, 0.5-5 parts of hydrogen containing silicone oil and 0.5-5 parts of releasing agents. By the adoption of the technical scheme, it is unnecessary to change rubber compound production equipment and technologies, the modified nano calcium carbonate is adopted to partially replace the precipitation method white carbon black and serve as filler of the silicon rubber compound, on the basis of not affecting basic performance of the silicon rubber compound, raw material cost of the silicon rubber compound is substantially reduced, and the silicon rubber compound is excellent in performance and meets the product requirement.

Description

technical field [0001] The invention relates to the field of organic silicon materials, in particular to a silicon compound added with nano-calcium carbonate and a preparation method thereof. Background technique [0002] High-temperature vulcanized silicone rubber products (that is, products after vulcanization of silicon compound rubber) have excellent properties such as high and low temperature resistance, aging resistance, ozone resistance, weather resistance, oil resistance, corrosion resistance, electrical insulation, breathability, and physiological inertia. , electrical and electronics, medical and health, daily civilian and other fields have been widely used. With the continuous development of the silicone market, people's demand for silicone rubber products is also increasing. However, due to the late start of domestic silicone technology compared with developed countries such as Europe, America and Japan, there are differences in technology, and there is also a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/04C08L83/05C08K13/06C08K9/06C08K3/36C08K3/26C08K5/098B29B7/28
Inventor 陈海平李恩苗刚党瑞东
Owner YICHANG XINGZHIXIN PLASTIC ELECTRONICS TECH CO LTD
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