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Reinforced flame retardant polyester with high molding rate and fluidity and production method thereof
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A technology for flame-retardant polyester and its production method, which is applied in the field of flame-retardant polyester and its production, can solve the problems of short injection molding cycle and lack of fluidity release ability of flame-retardant polyester materials, and achieve high release efficiency, Excellent mold release effect, high uniformity of toughness and fluidity
Active Publication Date: 2012-10-03
NANTONG DONGFANG PLASTIC CO LTD
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With the improvement of manufacturing level and the miniaturization of electronic and electrical products, the electronic components mounted on them are also facing the trend of miniaturization, light weight and thin wall. When engineering plastic PBT is used as the shell of parts, it is required It is also getting smaller and thinner. For example, when making relay casings and capacitor casings, the injection molding cycle is required to be short, the injection molding speed is fast, and the injection molding ability is strong. Dozens or even hundreds of small, thin-walled parts can be produced in one mold. The flame retardant polyester material does not have such high fluidity and fast release ability
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example 1、15、30
[0072] 0.1-30 parts of low-viscosity cyclic polyester (Example 1, 15, 30)
example 1
[0073] Antioxidant 0.1-5.0 parts (Example 1, 3, 5)
[0074] Nucleating agent 0.1-2.0 parts (example 0.2, 1, 2)
[0075] Lubricant 0.2-8.0 parts (example 0.5, 5, 8)
example 1、80、150
[0077] Other additives 0-10.0 parts (Examples 1, 5, 10).
[0078] The semi-crystalline thermoplastic polyester is polybutylene terephthalate, polytrimethylene terephthalate, polyethylene terephthalate, poly-1,4-cyclohexyl terephthalate One of alkane dimethyl esters;
[0079] The main flame retardant is brominated epoxy, decabromodiphenyl ethane, brominated polycarbon, brominated polyphenyl, polybrominated styrene, tris-(tribromophenoxy)-triazine, polybrominated One or more of pentabromobenzyl ester and phosphorus (phosphine) nitrogen flame retardant;
[0080] The flame retardant synergist is one or more of antimony trioxide, sodium antimonate, and antimony pentoxide;
[0081] The toughening agent is one or more of rubber elastomers, core-shell impact modifiers, binary or ternary olefin copolymers, and olefin graft modified copolymers;
[0082] The low-viscosity cyclic polyester is cyclobutylene terephthalate resin;
[0083] The antioxidant includes a primary antioxidant and an auxiliar...
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Abstract
The invention discloses a reinforced flame retardant polyester with high molding rate and fluidity and a production method thereof. The reinforced flame retardant polyester is prepared from the components of a half crystalloid thermoplastic polyester, a main flame retardant, a flame retardant synergist, a flexibilizer, a low-viscosity cyclic polyester, an antioxygen, a nucleating agent, a lubricant, a filling modifier and other auxiliaries. The reinforced flame retardant polyester with high molding rate and fluidity provided by the invention has the advantages of rapid molding period, high fluidity, fine demoulding efficacy, energy conservation, good mechanical property and the like.
Description
Technical field [0001] The invention relates to a flame-retardant polyester and a production method thereof. Background technique [0002] Thermoplastic reinforced flame-retardant polyester (PBT (polybutylene terephthalate)) is widely used in the electronics and electrical industries due to its good electrical insulation properties. With the improvement of the manufacturing level and the miniaturization of electronic and electrical products, the electronic components mounted on them are also facing the trend of miniaturization, lightening and thinning. Engineering plastic PBT is required when used as the shell of parts. It is also getting smaller and thinner. For example, when making relay shells and capacitor shells, it requires short injection molding cycle, high injection speed, and strong injection ability. One mold can produce dozens or even hundreds of small, thin-walled parts. The flame-retardant polyester material does not have such high fluidity and rapid demolding abil...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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