Fluororubber-grated-maleic anhydride bulking agent and preparing method thereof
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A technology of fluorine rubber grafting and maleic anhydride, which is applied in the field of compatibilizers, can solve problems such as high production cost, influence on glue performance, poor compatibility, etc., achieve stable compatibilization effect, increase grafting rate, Good volumetric effect
Inactive Publication Date: 2013-02-20
GUANGZHOU GLORYSTAR CHEM
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Problems solved by technology
At present, there are two main directions for the modification of fluororubber: first, through the main chain modification, such as the development of fluoroether rubber and fluorosilicone rubber, ether bonds are introduced into the main chain of fluororubber, which increases the flexibility of the molecule and makes Its low-temperature performance is greatly improved while retaining the original characteristics of fluororubber, but its promotion and application are greatly limited due to the high cost of development and production; the second is that rubber is used together, and fluororubber is used together w...
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Embodiment 1
[0023] Add 80 parts of fluororubber raw rubber, 3 parts of maleic anhydride, 0.5 parts of dicumyl peroxide (DCP), 0.2 parts of magnesium oxide, and 0.1 parts of tetramethylthiuram disulfide (vulcanization accelerator TMTD) to the dense In the mixing machine, under the conditions of temperature 120°C and rotation speed 50r / min, react for 15min to obtain fluorine rubber grafted maleic anhydride (KFM-g-MAH) compatibilizer, and the measured grafting rate is 1.65%. .
Embodiment 2
[0025] 120 parts of fluororubber raw rubber, 6 parts of maleic anhydride, 1 part of potassium persulfate (KPS), 0.3 parts of benzoyl peroxide (BPO), 2,2'-dithiodibenzothiazole (vulcanization accelerator DM) 0.2 parts were added to the internal mixer, and reacted for 18 minutes at a temperature of 140°C and a rotational speed of 80r / min to obtain a fluorine rubber grafted maleic anhydride (KFM-g-MAH) compatibilizer, measured Its graft rate is 3.5%.
Embodiment 3
[0027] 130 parts of fluororubber, 7 parts of maleic anhydride, 1.5 parts of lauryl peroxide (LPO), 0.5 parts of benzyl triphenylphosphine chloride (BPP), N-tert-butyl-2-benzothiazole sulfenyl Add 0.3 parts of amide (vulcanization accelerator TBBS) into the internal mixer, and react for 20 minutes under the condition of temperature of 160°C and rotation speed of 100r / min to obtain fluororubber grafted maleic anhydride (KFM-g-MAH) Compatibilizer, its graft rate is measured to be 3.15%.
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Abstract
The invention discloses a fluororubber-grated-maleic anhydride bulking agent and a preparing method thereof. The preparing method is that: raw fluororubber, fluororubber, initiating agents, vulcanizing agents and accelerants are filled into an internal mixer for reacting for 10-30min at temperature of 120-160 DEG C and with rotating speed to be 50-100r/min to obtain the fluororubber-grated-maleic anhydride (KFM-g-MAH) bulking agent. KFM-g-MAH performance of the bulking agent and carbonyl groups/carboxyl groups and other polar groups in polar acrylic polymer have strong interaction, and simultaneously can react with polar groups (amino groups and carboxyl groups) of acrylic polymer (ACM) and epoxy groups to achieve the reactive compatibilization effect. By aid of selection of the initiating agents, reactant activation energy is reduced, and accordingly high grating efficiency is achieved. The fluororubber-grated-maleic anhydride bulking agent and the preparing method thereof have the advantages that grating efficiency is obviously improved and compatibilization effect is good and stable.
Description
technical field [0001] The invention relates to a compatibilizer, specifically a fluorine rubber grafted maleic anhydride compatibilizer, and also relates to a preparation method thereof. Background technique [0002] Fluorine rubber (FKM) is a synthetic polymer elastomer containing fluorine atoms on the carbon atoms of the main chain or side chains. It is widely used in aerospace, military industry, national defense, automobile, petrochemical and many other fields. Viton products are mainly used in seals, gaskets, gaskets, diaphragms, hoses, oil seals, linings, anti-corrosion products and electrical insulation products. [0003] The most widely used fluorine rubber is in the automotive field, accounting for 60-70% of the total application. In auto parts, it can be used as sealing material for engine fuel hose, refueling hose, fuel pump, air conditioner O-ring, injection device, power piston, valve stem, crankshaft, and air conditioner compressor. During use, automotive se...
Claims
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