붕산 아연

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붕산 아연 MSDS

Zinc borate

붕산 아연 C화학적 특성, 용도, 생산

화학적 성질

White, amorphous powder. Soluble in dilute acids; slightly soluble in water. Nonflammable.

Characteristics

Zinc Borate is a Boron based flame retardant compatible with many polymeric matrices. It is effective both in the solid phase and in the gas phase and its strong smoke suppressing action, helps to improve time of rescue in case of fire.
Zinc Borate is a multifunctional flame retardant:
promotes the formation of a protective vitreous layer and of a strong char layer, which reduces the formation of toxic and irritant smoke during the fire
It looses its water of hydration at temperatures above 290°C, cooling the front of the flames and subtracting energy to the fire
It acts as a synergist in conjunction with halogenated compounds, so that lower loadings of halogenated flame retardant additives are needed
It shows a strong synergic effect with antimony trioxide; in presence of alumina trihydrate (ATH) the synergic effect is enhanced
It improves resistance against electrical degradation: high anti-arcing and anti-tracking indexes
It is an afterglow suppressant.

용도

Zinc borate is prepared as an insoluble double salt from water-soluble zinc and boron compounds. Compounds having varying amounts of zinc, boron, and water of hydration are available. The ratio of these components affects the temperature at which the flame-inhibiting powers are activated, as well as the temperature at which they can be processed. Zinc borates can either be used alone or in combination with other halogen synergists, such as antimony oxide. In some instances zinc borate is also used with alumina trihydrate to form a glass-like substance that inhibits polymer degradation.

생산 방법

Zinc borate (2ZnO·3B2O3·3.5H2O) in general is produced with the reaction between zinc oxide and boric acid. Boric acid is solved in water between temperatures 95ºC and 98ºC and zinc oxide and seed crystal of 2ZnO·3B2O3·3.5H2O is added to this solution at a certain stoichiometric ratio. The reaction continues for a while by mixing and the zinc borate formed is filtered, dried and ground. The boric acid solution is fed to the system as reflux.

주요 응용

zinc borate is primarily used as a flame retardant in plastics and cellulose fibers, paper, rubbers and textiles. It is also used in paints, adhesives, and pigments. As a flame retardant, it can replace antimony trioxide as a synergist in both halogen-based and halogen-free systems. It is an anti-dripping and char-promoting agent, and suppresses the afterglow. In electrical insulator plastics it suppresses arcing and tracking.
In halogen-containing systems zinc borate is used together with antimony trioxide and alumina trihydrate. It catalyzes formation of char and creates a protective layer of glass. Zinc catalyzes the release of halogens by forming zinc halides and zinc oxyhalides.
In halogen-free systems, zinc borate can be used together with alumina trihydrate, magnesium hydroxide, red phosphorus, or ammonium polyphosphate. When burning the plastics, a porous borate ceramic is formed that protects the underlying layers. In presence of silica, borosilicate glass can be formed at plastic burning temperatures.
As the partial, or completely EPA approved substitute for containing halogen and other flame retardants, zinc borate is being directly applied to a wide range of plastics and rubber processing such as PVC, PE, PP, and to enhance polyamide, PVC resin, polyphenylene ethylene, epoxy resin, polyester resin, acid ethylene and natural rubber, styrene butadiene rubber, and chloroprene rubber. It can also be applied to the production of paper, fiber fabric, decorative panels, floor leather, wallpaper, carpet, ceramic glaze, fungicides, and paint production to improve flame retardant performance.

공업 용도

zinc borate (2ZnO-3B2Ovl5H2O) has a greater flame retardancy than borates used alone.
Zinc compounds perform most of their flame retardant function in the condensed phase. Zinc is used with boron in the form of zinc borate, and with molybdenum in the form of zinc molybdate. Zinc borate can also be used as a flame retardant and smoke suppressant with different polymers. In the case of zinc borate, 2ZnO.3B203.3.5H20, water given off can promote the formation of a cellular char which can act as a good insulator in protecting the underlying polymer or substrate. Moore studied the effects of zinc borate on smoke reduction and flame retardancy of PVC. He reported that smoke generation can be suppressed by over 40% by proper combination of additives without an adverse effect on flame retardancy. The use of zinc borate as a flame retardant and smoke suppressant alone or with other additives, e.g. Sb203, or AI(OH)3, has found wide application in the plastics industry.

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붕산 아연 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
Jiangsu Qingquan Chemical Co., Ltd.	+86-571-86589381,86589382,86589383	sales1@qqpharm.com	CHINA	154	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29914	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Hebei Guanlang Biotechnology Co., Ltd.	+86-19930503282	alice@crovellbio.com	China	8823	58
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22968	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5909	58
Shanghai Longyu Biotechnology Co., Ltd.	+8615821988213	info@longyupharma.com	China	2531	58
Chongqing Chemdad Co., Ltd	+86-023-61398051 +8613650506873	sales@chemdad.com	China	39916	58
Shaanxi Dideu Medichem Co. Ltd	18192627656	1012@dideu.com	China	3422	58

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