Reinforced flame retardant polyester with high molding rate and fluidity and production method thereof
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A flame-retardant polyester and high-fluidity technology, which is applied in the field of flame-retardant polyester and its production, can solve the problems of short injection molding cycle, flame-retardant polyester material does not have fluidity and mold release ability, and achieves high mold release efficiency, Excellent mold release effect, high uniformity of toughness and fluidity
Active Publication Date: 2011-04-20
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
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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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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 (for example 0.2, 1, 2)
[0075] Lubricant 0.2-8.0 parts (eg 0.5, 5, 8)
example 1、80、150
[0077] Other additives 0-10.0 parts (Example 1, 5, 10).
[0078] Described semi-crystalline thermoplastic polyester is polybutylene terephthalate, polytrimethylene terephthalate, polyethylene terephthalate, polyethylene terephthalate-1,4-cyclohexyl One of alkane dimethyl esters;
[0079] The main flame retardant is brominated epoxy, decabromodiphenylethane, brominated polycarbonate, brominated polyphenylene, polybrominated styrene, three-(tribromophenoxy)-triazine, polybrominated One or more of pentabromobenzyl esters and phosphorus (phosphine) nitrogen flame retardants;
[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] Described low-viscosity cyclic polyester is cyclobutylene terephthalate resin;
[0083] The antioxidant includ...
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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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 because of its good electrical insulation properties. 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 mater...
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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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