A kind of antifouling SMC sheet material and preparation method thereof of PMMA as low shrinkage agent

A low-shrinkage agent, anti-fouling technology, used in biocide-containing paints, anti-fouling/underwater coatings, chemical instruments and methods, etc. problem, to achieve the effect of high aging resistance, improved sheet performance, and strong anti-fouling ability

Active Publication Date: 2021-03-30
江苏美赫家居有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these processes, the low-shrinkage agent is not easy to disperse, and the product molding process cannot rely only on heating but needs to be thickened by adding magnesium oxide. The link is not strong due to the uneven dispersion of MMA monomer, which leads to the hardness, corrosion resistance and aging resistance of the molded product. Defects and other issues

Method used

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  • A kind of antifouling SMC sheet material and preparation method thereof of PMMA as low shrinkage agent
  • A kind of antifouling SMC sheet material and preparation method thereof of PMMA as low shrinkage agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1 prepares PMMA as the stain-resistant SMC sheet material of low shrinkage agent:

[0059] formula:

[0060] PMMA / MMA mixed liquid low shrinkage agent 1500 parts,

[0061] 800 parts of MMA powder,

[0062]50 parts of MMA / TBPB mixed solution initiator,

[0063] HQ / mma mixed liquid polymerization inhibitor 3 parts,

[0064] Filling material 3500 parts,

[0065] 50 parts of internal release agent,

[0066] Dispersant 5 parts,

[0067] Pneumatic silica powder 80 parts,

[0068] 100 parts of color paste,

[0069] 150 parts of glass fiber,

[0070] 20 parts of other additives.

[0071] In the PMMA / MMA mixed liquid low shrinkage agent, the mass ratio of PMMA / MMA is 1080:900.

[0072] In the MMA / TBPB mixed liquid initiator, the mass ratio of MMA / TBPB is 2:1.

[0073] In the HQ / mma mixed liquid polymerization inhibitor, the mass ratio of HQ / mma is 1:50.

[0074] The filler is ATH, the internal release agent is octyl stearate, the dispersant is BYK, and the...

Embodiment 2

[0081] Embodiment 2 prepares PMMA as the stain-resistant SMC sheet material of low shrinkage agent (different from embodiment 1 formula):

[0082] formula:

[0083] PMMA / MMA mixed liquid low shrinkage agent 2000 parts,

[0084] MMA powder 1000 parts,

[0085] 80 parts of MMA / TBPB mixed solution initiator,

[0086] HQ / mma mixed liquid polymerization inhibitor 7 parts,

[0087] Filling material 4500 parts,

[0088] 80 parts of internal release agent,

[0089] 8 parts of dispersant,

[0090] Pneumatic silica powder 120 parts,

[0091] 800 parts of color paste,

[0092] 250 parts of glass fiber,

[0093] 30 parts of other additives.

[0094] In the PMMA / MMA mixed liquid low shrinkage agent, the mass ratio of PMMA / MMA is 1080:900.

[0095] In the MMA / TBPB mixed liquid initiator, the mass ratio of MMA / TBPB is 2:1.

[0096] In the HQ / mma mixed liquid polymerization inhibitor, the mass ratio of HQ / mma is 1:50.

[0097] The filler is ATH, the internal release agent is octyl...

Embodiment 3

[0104] Embodiment 3 prepares PMMA as the stain-resistant SMC sheet material of low shrinkage agent (different from embodiment 1,3 formula):

[0105] formula:

[0106] PMMA / MMA mixed liquid low shrinkage agent 1980 parts,

[0107] MMA powder 900 parts,

[0108] 60 parts of MMA / TBPB mixed solution initiator,

[0109] HQ / mma mixed liquid polymerization inhibitor 5 parts,

[0110] Filling material 4000 parts,

[0111] 60 parts of internal release agent,

[0112] 7 parts of dispersant,

[0113] Pneumatic silica powder 100 parts,

[0114] Color paste 500 parts,

[0115] 200 parts of glass fiber,

[0116] 25 parts of other additives.

[0117] In the PMMA / MMA mixed liquid low shrinkage agent, the mass ratio of PMMA / MMA is 1080:900.

[0118] In the MMA / TBPB mixed liquid initiator, the mass ratio of MMA / TBPB is 2:1.

[0119] In the HQ / mma mixed liquid polymerization inhibitor, the mass ratio of HQ / mma is 1:50.

[0120] The filler is ATH, the internal release agent is octyl s...

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Abstract

The invention discloses a stain-resistant SMC sheet material with PMMA as a low-shrinkage agent and a preparation method thereof. The invention relates to the technical field of functional composite preparation. In order to solve the problems caused by the traditional method for preparing SMC sheets by using PE, PVAC and MMA as low-shrinkage agents, the invention provides an SMC sheet material anda preparation method thereof, wherein PMMA / MMA mixed liquid is used as a low-shrinkage agent, the formula comprises a PMMA / MMA mixed liquid low-shrinkage agent, MMA powder, an MMA / TBPB mixed liquid initiator, an HQ / mma mixed liquid polymerization inhibitor, a filler, an internal releasing agent, a dispersing agent, aerosil powder, color paste, glass fibers and other assistants, and by using the specific preparation method provided by the invention, the finally obtained SMC sheet material does not need to be added with a magnesium oxide thickening agent and does not need to be heated for thickening, the forming temperature is low, the forming pressure is small, safety and environmental protection are achieved, and the hardness, corrosion resistance and aging resistance are all improved.

Description

technical field [0001] The invention relates to the technical field of preparation of functional composite materials, in particular to a stain-resistant SMC sheet with PMMA as a low-shrinkage agent and a preparation method. Background technique [0002] SMC is the abbreviation of Sheet molding compound, that is, sheet molding compound. It first appeared in Europe in the early 1960s, and around 1965, the United States and Japan successively developed this craft. In the late 1980s, our country introduced foreign advanced SMC production lines and production techniques. SMC has the advantages of superior electrical properties, corrosion resistance, light weight, easy and flexible engineering design, and its mechanical properties can be compared with some metal materials, so it is widely used in transportation vehicles, construction, electronics / electrical industries. [0003] The molding process and application of SMC molding composite materials have been developing rapidly in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/06B32B3/08B32B7/12B32B37/24B32B37/10B32B37/12C09D4/06C09D4/02C09D5/16C09D7/61C09D7/63C08J7/04C08L23/06
CPCB32B3/08B32B7/12B32B27/08B32B27/32B32B37/10B32B37/1284B32B37/24B32B2037/243B32B2250/242B32B2255/10B32B2255/26B32B2262/101B32B2307/552B32B2307/714B32B2323/04C08J7/042C08J2323/06C09D4/06C09D5/1687
Inventor 袁春孙明周
Owner 江苏美赫家居有限公司
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