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Composite material of halogen-free flame-retardant reinforced PA66/recycled PET bottle-grade chips and preparation method thereof
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A composite material, PET-PA66 technology
Inactive Publication Date: 2015-11-04
上海奇彩塑胶原料有限公司
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However, due to the poor compatibility of the two, a certain amount of compatibilizer is added in the preparation process of the composite material, but the effect is often not ideal.
[0004] In addition, in order to meet the trend of environmental protection development in today's society, hypophosphite-based halogen-free flame retardants are usually used in flame-retardant reinforced nylon 66, such as Chinese published patents CN200610150960.1 and CN201110378774.4, but their high prices limit their wide application.
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[0055] The preparation method of compatibilizer PET-PA66 copolymer is as follows:
[0056] 1) Add dimethyl terephthalate (DMT) and ethylene glycol into the reaction kettle at a ratio of 1:2.4 according to the amount of substances, and carry out transesterification reaction at 200°C-220°C, and the reaction time is 60 minutes to 80 minutes; the transesterification catalyst is magnesium acetate, and its added amount is 0.03% to 0.05% of the weight percentage of DMT. Preferably it accounts for 0.04% by weight of DMT.
[0057] (2) After the transesterification reaction, adding a mass percentage to the reactor is 0.03%-0.05% polycondensation catalyst of the total reactant mass, preferably adding 0.04% polycondensation catalyst, and the polycondensation catalyst is an antimony-containing oxide; meanwhile, the reactor Raise the temperature to 260°C-265°C, add a polyamidepolymer with a mass ratio of 30% to 45% of the total reactant mass to carry out the copolymerization reaction, the...
Embodiment 1
[0064] Composite material of the present invention, its composition is as shown in table 1:
[0070] The compatibilizer is PET-PA66 copolymer, wherein the content of nylon 66 units in the copolymer is 30%, and the sequence distribution of its molecular chain is:
[0082] The alkali-free glass fiber is a short fiber, and the diameter of the short fiber is 13 microns;
[0083] The compatibilizer is PET-PA66 copolymer, wherein the content of nylon 66 units in the copolymer is 35%, and the sequence distribution of its molecular chain is:
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Abstract
The invention relates to the technical field of high polymer materials, and particularly relates to an alloycomposite material. A composite material of halogen-free flame-retardant reinforced PA66 / recycled PET bottle-grade chips is composed of the following raw materials in parts by weight: 100 parts of nylon 66, 10-30 parts of recycled PET bottle chips, 25-35 parts of non-alkali fiberglass, 12-16 parts of a halogen-free flame retardant, 1-3 parts of black masterbatch, 1-10 parts of a compatilizer, 0.1-1 part of an antioxidant, and 0.1-1 part of a lubricant. The composite material disclosed by the invention has the advantages of low material cost, low carbon, environmental protection, good mechanical properties, wide application scope, and the like.
Description
technical field [0001] The invention relates to the technical field of polymer materials, in particular to an alloy composite material. Background technique [0002] Polyethylene terephthalate (PET) is not only widely used in fiber applications due to its excellent comprehensive properties such as chemical and physical properties and low price, but also in beverage bottles. With the widespread application of PET in the field of edible liquid flexible packaging, it has brought about the recycling of a large number of waste beverage bottles. As the amount of PET is gradually increased, the amount of PET bottle recycling is also gradually increasing. According to statistics, the average recycling rate of PET bottles is 20.4%. Countries with high recycling rates such as Switzerland, Germany and Japan are 100%, 49% and 46% respectively, while our country is only 1.7%. Most of the recycled PET bottle flakes are "downgraded utilization", used to produce low-grade fibers, films an...
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