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Polybutylece terephthalate (PBT) filler masterbatch and preparation method thereof

A technology of filling masterbatch and PBT resin, which is applied in the field of PBT filling masterbatch and its preparation, and can solve the problems of reduced processing performance, reduced mechanical strength of plastic products, and poor component dispersion.

Inactive Publication Date: 2011-08-10
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in order to reduce costs and increase market competitiveness, many manufacturers increase the content of fillers in the processing of plastic products containing PBT to reduce costs, but this leads to poor dispersion of components and reduced processing performance of plastic products containing PBT during processing. Defects such as pitting and streaks caused by poor dispersion of fillers also lead to a decrease in the mechanical strength of the plastic product containing PBT and are easily damaged

Method used

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  • Polybutylece terephthalate (PBT) filler masterbatch and preparation method thereof
  • Polybutylece terephthalate (PBT) filler masterbatch and preparation method thereof
  • Polybutylece terephthalate (PBT) filler masterbatch and preparation method thereof

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preparation example Construction

[0064] The embodiment of the present invention also provides the preparation method of the above-mentioned PBT filled masterbatch composite material, its technological process is as follows figure 1 shown. The method comprises the steps of:

[0065] S1: Weigh each component according to the above formula of PBT filler masterbatch;

[0066] S2: Mix the weighed components to form a mixed material;

[0067] S3: extruding and granulating the mixed material to obtain the PBT filled masterbatch.

[0068] Specifically, in the S1 step of the above-mentioned PBT filling masterbatch preparation method, the formula of the PBT filling masterbatch does not contain antioxidants, coupling agent components or another formula containing antioxidants and coupling agents. Formulations of the preferred examples. In order to save space, details are omitted here.

[0069] In step S2 of the above PBT filling masterbatch preparation method, each component should be mixed as uniformly as possible...

Embodiment 1

[0078] The formula components of PBT filler masterbatch weight percentage are as follows:

[0079] 14.7 parts of PBT resin

[0080] 6 parts of compatibilizer

[0081] Natural barium sulfate 25 parts

[0082] Precipitated barium sulfate 50 parts

[0083] Talcum powder 2.3 parts

[0084] Lubricant 1 part.

[0085] Among them, the relative density of PBT resin is 1.38g / cm 3 ; Its viscosity is 1.0P·S; the compatibilizer is a graft of POE and glycidyl methacrylate, the grafting rate is 1%, the viscosity is 2.5P.S; the relative density of natural barium sulfate is 5g / cm 3 , the fineness is 1250 mesh; the relative density of precipitated barium sulfate is 4.1g / cm 3 , the fineness is 2000 mesh; the relative density of talcum powder is 2.7g / cm 3 , the fineness is 1250 mesh; the lubricant is a mixture of PP wax with a melting point of 147°C and PE wax with a softening point of 100°C.

[0086] The preparation method of PBT filling masterbatch is as follows:

[0087] S11: Weigh e...

Embodiment 2

[0091] The formula components of PBT filling masterbatch weight percentage are as follows:

[0092] 14.7 parts of PBT resin

[0093] 6 parts of compatibilizer

[0094] Natural barium sulfate 25 parts

[0095] Precipitated barium sulfate 50 parts

[0096] Talcum powder 2.3 parts

[0097] Lubricant 1 part

[0098] Antioxidant 0.2 part

[0099] 0.8 parts of coupling agent.

[0100] Among them, what is the relative density of PBT resin? g / cm 3 ; Its viscosity is 1.0P S; The compatibilizer is the graft of POE and glycidyl methacrylate, its graft rate is 1.0%, and viscosity is 4.0P.S; The relative density of natural barium sulfate is 4.5g / cm 3 , the fineness is 3000 mesh; the relative density of precipitated barium sulfate is 4.0g / cm 3 , the fineness is 3000 mesh; the relative density of talcum powder is 2.8g / cm 3 , the fineness is 1250 mesh; the lubricant is a mixture of PP wax with a melting point of 145°C and PE wax with a softening point of 105°C.

[0101] The prepa...

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Abstract

The invention discloses a polybutylece terephthalate (PBT) filler masterbatch and a preparation method thereof. The PBT filler masterbatch comprises the following components in percentage by weight: 11.5 to 17.5 parts of PBT resin, 3 to 6 parts of compatilizer, 20 to 30 parts of native sulfate of barium, 45 to 50 parts of precipitated barium sulfate, 2 to 3 parts of talcpowder and 0.5 to 1.5 parts of lubricant. The components in proper content ranges are interacted in the extrusion process, so that the PBT filler masterbatch has excellent dispersability, mechanical strength, processability and antioxidant property. In the preparation method for the PBT filler masterbatch, a process of mixing, reacting, extruding and granulating at one time is adopted, and the preparation method has the advantages of simple process, convenience of operation, high benefit and low cost, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a PBT filling masterbatch and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline material with a higher melting point, low price, excellent wear resistance, chemical resistance, excellent electrical insulation, good Excellent mechanical strength and good processing and molding characteristics, widely used in automotive, electrical, mechanical, radio, textile, and other engineering accessories, daily necessities, turnover boxes, medical and health equipment, construction and other materials. [0003] At present, in order to reduce costs and increase market competitiveness, many manufacturers increase the content of fillers in the processing of plastic products containing PBT to reduce costs, but this leads to poor dispersion of components and reduced processing performance of plastic products containi...

Claims

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Application Information

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IPC IPC(8): C08K13/02C08K3/34C08L67/02B29C47/92C08K3/30C08L51/06B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 徐东徐永罗田元
Owner SHENZHEN KEJU NEW MATERIAL