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A kind of aromatic polyamide fiber rubber premixed masterbatch
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An aromatic polyamide and rubber technology, applied in the field of aromatic polyamide fiber rubber premix masterbatch, can solve the problems of poor abrasion resistance and tear resistance, complex composition and preparation method, and high raw material cost, and achieve high The effect of grip, increased stress at constant elongation, and fewer drying steps
Active Publication Date: 2019-04-30
中蓝晨光化工有限公司
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[0005] The present invention aims to solve the complex composition and preparation method of the aromatic polyamide fiber rubber premixed masterbatch in the prior art, the high raw material cost and the use of the premixed masterbatch composed of existing raw materials to make the final rubber product wear-resistant and anti-friction. To solve the problem of poor tearing performance, we provide an aromatic polyamide fiber rubber premix masterbatch, which is made of aromatic polyamide chopped fibers in water through high-speed beating, beating, grinding and grinding. The prepared aromatic polyamide pulp has simple raw materials and preparation methods, and can effectively improve the abrasion resistance and tear resistance of the final rubber product.
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Embodiment 1
[0027] A premixed masterbatch of aromatic polyamide fiber rubber, comprising the following raw materials: 20 parts of liquid rubber, 40 parts of aromatic polyamide fiber and 80 parts of dispersing solvent; Liquid rubber containing other solvent components, flowable at normal temperature, low viscosity, easy to mix, said liquid rubber includes polar liquid rubber and non-polar liquid rubber; said dispersing solvent is a low boiling point recyclable solvent;
[0028] In this embodiment, the aromatic polyamide fiber is aromatic polyamide pulp, and the aromatic polyamide pulp is obtained by beating and grinding aromatic polyamide chopped fibers in water through a beater. The moisture content of the pulp is controlled at 50%.
[0029] In this embodiment, polar liquid rubber: liquid fluorine rubber is used.
[0030] In this embodiment, tetrahydrofuran is used as the dispersing solvent.
[0031]In this embodiment, the aromatic polyamide pulp is made of chopped aromatic polyamide fi...
Embodiment 2
[0033] A kind of aromatic polyamide fiber rubber premix master batch, comprises following raw material: 40 parts of liquid rubber, 70 parts of aromatic polyamide fiber and 110 parts of solvent;
[0034] Except that the above-mentioned raw material ratio is different from embodiment 1, the present embodiment also has the following differences from embodiment 1:
[0035] In this embodiment, the water content of the pulp is controlled to be 65%.
[0036] The polar liquid rubber used in this embodiment is liquid nitrile rubber; specifically, liquid nitrile rubber Nipol1312 is used. The dispersion solvent of the present embodiment adopts acetone;
Embodiment 3
[0038] A premixed masterbatch of aromatic polyamide fiber rubber, comprising the following raw materials: 50 parts of liquid rubber, 80 parts of aromatic polyamide fiber and 130 parts of dispersing solvent;
[0039] Except that the above-mentioned raw material ratio is different from embodiment 1, the present embodiment also has the following differences from embodiment 1:
[0040] In this embodiment, the moisture content of the pulp is 70%. The liquid rubber is non-polar liquid rubber, which is EPDM; specifically, Trilene 65 is used as a liquid EPDM; the dispersion solvent is 120# solvent oil.
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Abstract
The invention provides an aromatic polyamidefiber and rubber premix master batch. The master batch comprises 20-80 parts of liquid rubber, 20-80 parts of aromatic polyamide fibers and an appropriate amount of a dispersing solvent; and the weight of the dispersing solvent is 1-2 times the total weight of the liquid rubber and the aromatic polyamide fibers. The aromatic polyamide fibers comprise an aromatic polyamide pulp and an aromatic polyamide chopped fibers, and the aromatic polyamide pulp is obtained through breaking and grinding the aromatic polyamide chopped fibers in water through a beater. The aromatic polyamide fiber and rubber premix master batch selecting the aromatic polyamide pulp obtained through high-speed beating, breaking and grinding of the aromatic polyamide chopped fibers in water has the advantages of simple composition raw materials, simple preparation method, and effective improvement of the wear resistance and the tear resistance of finally obtained rubber products.
Description
technical field [0001] The invention belongs to the fields of high-performance macromoleculestructural materialmanufacturing technology and rubber modification, and in particular relates to an aromatic polyamide fiber rubber premixed masterbatch. Background technique [0002] Aromatic polyamide chopped strands and pulp have always been concerned by the rubber industry for their excellent physical and chemical properties. After being added to the rubber matrix, the rubber masterbatch can improve the performance of the rubber, but its specific surface area is large and polar, and it is easy to generate static electricity. , which tends to cause the fibers to become tangled and difficult to disperse in the rubber matrix. The traditional method directly mixes aramid pulp and raw rubber. Aramid fiber is not easy to disperse evenly and the fiber itself is twisted into a ball, which ultimately leads to the failure to effectively improve the performance of the product. Therefore,...
Claims
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