Preparation method of compatilizer capable of preventing PBT (polybutylene terephthalate) alloy material from warping and compatilizer prepared with preparation method
A technology of alloy material and compatibilizer, applied in the field of compatibilizer and compatibilizer preparation, can solve the problems of product warpage, affecting the use of materials, etc., and achieve the effect of reducing difficulty, preventing warpage and improving flame retardant performance
Active Publication Date: 2016-11-09
天津市佰盟科技发展有限公司
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Problems solved by technology
At present, more than 75% of its reinforced flame-retardant materials are used in the fields of electronic appliances, automobiles, machinery and instruments, but its products have serious warping phenomena, which affects the wider use of its materials
Method used
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preparation example Construction
[0039] (2) Preparation of compatibilizer A:
[0040] 1. Prepare materials: prepare materials according to the components (parts by weight) shown in Table 2:
[0041] ②Mix the above components with a high-speed mixer, extrude and granulate with a twin-screw extruder with a length-to-diameter ratio of 44:1 at 180°C to 200°C to obtain finished compatibilizer A granules.
[0042] Concrete component consumption (parts by weight) of table 1GMA-g-EPDM / PE
[0043]
[0044] The specific component consumption (parts by weight) of table 2 compatibilizer A
[0045]
[0046]
[0047] B, prepare compatibilizer B of the present invention according to the following method
[0048] (1) Preparation of MAH-g-EPDM / PE masterbatch:
[0049] A) material preparation: prepare materials according to the components (parts by weight) shown in table 3: wherein, the graft monomer is maleic anhydride (MAH); wherein, the number average molecular weight of the EPDM powder is 4.5-5.2 ten thousand, ...
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Abstract
The invention relates to the field of high polymer materials, in particular to a preparation method of a compatilizer capable of preventing a PBT (polybutylene terephthalate) alloy material from warping and the compatilizer prepared with the preparation method. The preparation method comprises steps as follows: (1), preparation of melt-grafting resin: components including 30-35 parts of EPDM (ethylene-propylene-diene monomer), 50-60 parts of PE (polyethylene) powder, 2-5 parts of a grafting monomer, 0.2-0.3 parts of peroxide, 0.2-0.3 parts of a dispersing agent and 0.5-1 part of a processing aid are taken and subjected to melt extrusion and washing purification, wherein the grafting monomer is GMA (glycidyl methacrylate) or MAH (maleic anhydride); (2), preparation of the compatilizer: components including 70-90 parts of the melt-grafting resin and 10-30 parts of submicron-grade silicon dioxide pellets are taken and subjected to melt extrusion. The compatilizer can improve compatibility of PBT with non-crystalline and semi-crystalline polymers and can prevent the PBT alloy material from warping.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of a compatibilizer for preventing warping of PBT alloy materials and the prepared compatibilizer. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline thermoplastic resin. Its molecular chain is a linear structure. There are no side chains on the main chain. Excellent crystallinity and high melting temperature (generally at 224°C to 235°C). There are less mobile benzene rings and polar ester groups in the PBT structural unit, which can easily form a conjugated system, which can make the intermolecular closer and increase the intermolecular force, thereby improving the rigidity of the molecular chain. Strengthening, while reducing the solubility, flexibility and water absorption of the molecular chain, so it has excellent mechanical properties, electrical insulation, thermal stability and chemical stability, self-lubricating and pr...
Claims
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IPC IPC(8): C08L51/06C08L83/04C08K13/04C08K7/18C08K3/36C08K3/32C08K5/103C08L67/02C08F255/02C08F220/32C08F222/06C08F255/06
CPCC08F255/02C08F255/06C08J3/226C08J2367/02C08J2451/06C08L51/06C08L67/02C08L2201/02C08L2205/025C08L2205/03C08L2205/035C08L2205/08C08K13/04C08K7/18C08K3/36C08K2003/325C08K5/103C08L83/04C08F220/325
Inventor 吕智
Owner 天津市佰盟科技发展有限公司