阅读说明：本技术 一种复合胶管用fkm混炼胶及其制备方法 (FKM rubber compound for composite rubber pipe and preparation method thereof ) 是由 曾稼琪 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种复合胶管用FKM混炼胶,按质量份数计,包括如下组份：15～25份炭黑、0～1份脱模剂、1份氧化锌、1.2～3.6份硫化剂、0.3～1.6份第一助交联剂、2～6.5份第二助交联剂、5～15份填料、5～15份第一生胶、85～95份第二生胶；第一生胶和第二生胶的质量份数之和为100份,第一生胶为P495,第二生胶为RE620。本发明的复合胶管用FKM混炼胶放置后收缩率小、自粘性能好、与其他复合胶管用FKM混炼胶粘合强度高。本发明的复合胶管用FKM混炼胶的制备方法简单,易于推广。(The invention discloses an FKM rubber compound for a composite rubber pipe, which comprises the following components in parts by weight: 15-25 parts of carbon black, 0-1 part of a release agent, 1 part of zinc oxide, 1.2-3.6 parts of a vulcanizing agent, 0.3-1.6 parts of a first auxiliary crosslinking agent, 2-6.5 parts of a second auxiliary crosslinking agent, 5-15 parts of a filler, 5-15 parts of first raw rubber and 85-95 parts of second raw rubber; the sum of the mass parts of the first raw rubber and the second raw rubber is 100 parts, the first raw rubber is P495, and the second raw rubber is RE 620. The FKM rubber compound for the composite rubber pipe has small shrinkage after being placed, good self-adhesive property and high bonding strength with the FKM rubber compound for other composite rubber pipes. The preparation method of the FKM rubber compound for the composite rubber pipe is simple and easy to popularize.)

1. The FKM rubber compound for the composite rubber pipe is characterized by comprising the following components in parts by mass: 15-25 parts of carbon black, 0-1 part of a release agent, 1 part of zinc oxide, 1.2-3.6 parts of a vulcanizing agent, 0.3-1.6 parts of a first auxiliary crosslinking agent, 2-6.5 parts of a second auxiliary crosslinking agent, 5-15 parts of a filler, 5-15 parts of first raw rubber and 85-95 parts of second raw rubber; the sum of the mass parts of the first raw rubber and the second raw rubber is 100 parts, the first raw rubber is P495, and the second raw rubber is RE 620.

2. The FKM compound for a composite rubber hose according to claim 1, wherein the carbon black is present in an amount of 22 parts by mass.

3. The FKM compound for a composite rubber hose according to claim 1, wherein the release agent is 0.5 part by mass.

4. The FKM compound for a composite rubber hose according to claim 1, wherein the vulcanizing agent is 2.4 parts by mass.

5. The FKM compound for a composite rubber hose according to claim 1, wherein the first co-crosslinking agent is present in an amount of 0.3 parts by mass; the mass part of the second auxiliary crosslinking agent is 4 parts.

6. The FKM compound for a composite rubber hose according to claim 1, wherein the filler is 10 parts by mass.

7. The FKM compound for a composite rubber hose according to claim 1, wherein the first raw rubber is 10 parts by mass; the mass portion of the second raw rubber is 90 portions.

8. The method for preparing an FKM compound for a composite rubber hose according to any one of claims 1 to 7, comprising the steps of:

s1, feeding the first raw rubber and the second raw rubber into an internal mixer, wherein the rotating speed of the internal mixer is 18-22 r/min, the temperature of the internal mixer is 60-70 ℃, and the mixing time is 2-4 min;

s2, putting carbon black, a release agent, zinc oxide, a first auxiliary crosslinking agent, a second auxiliary crosslinking agent and a filler into the mixture treated in the S1, adjusting the temperature to 80-100 ℃, and mixing for 9-11 min at the rotating speed of 28-32 r/min;

and S3, putting the mixture processed in the S2 mode into an open mill, adding a vulcanizing agent, thinning and passing through the mixture for 5 times, processing for 7-9 min, adjusting the temperature to be 60-80 ℃, and discharging the slices.

9. The method for preparing FKM rubber compound for composite hoses as claimed in claim 8, wherein in S1, the rotation speed of the internal mixer is 20r/min, the temperature of the internal mixer is 65 ℃, and the mixing time is 3 min; in S2, the adjusted temperature is 90 ℃, the mixing time is 10min, and the rotating speed is 30 r/min; in S3, the temperature after adjustment was 70 ℃ and the treatment time was 8 min.

Technical Field

The invention relates to the field of grinding wheel pressurization, in particular to an FKM rubber compound for a composite rubber pipe and a preparation method thereof.

Background

The existing FKM rubber compound for the FKM composite rubber pipe has the following problems: 1. after the FKM rubber compound for the FKM composite rubber pipe is preformed into a sheet from a calender, the FKM composite rubber pipe is placed for 1 day and has large shrinkage compared with the original size; 2. the FKM rubber compound for the FKM composite rubber pipe has poor self-adhesion, and the FKM rubber are easy to delaminate after being molded; 3. the FKM and VMQ kneaded rubber has low bonding strength after being molded.

An FKM rubber compound for a composite rubber pipe, which has small shrinkage rate after being placed, good self-adhesive property and high bonding strength with FKM rubber compounds for other composite rubber pipes, and a preparation method thereof are needed to solve the technical problems.

Disclosure of Invention

In order to solve the technical problems, the invention provides the FKM rubber compound for the composite rubber pipe and the preparation method thereof. The preparation method of the FKM rubber compound for the composite rubber pipe is simple and easy to popularize.

The invention solves the technical problems by the following technical scheme:

the invention provides an FKM rubber compound for a composite rubber pipe, which comprises the following components in parts by weight: 15-25 parts of carbon black, 0-1 part of a release agent, 1 part of zinc oxide, 1.2-3.6 parts of a vulcanizing agent, 0.3-1.6 parts of a first auxiliary crosslinking agent, 2-6.5 parts of a second auxiliary crosslinking agent, 5-15 parts of a filler, 5-15 parts of first raw rubber and 85-95 parts of second raw rubber; the sum of the mass parts of the first raw rubber and the second raw rubber is 100 parts, the first raw rubber is P495, and the second raw rubber is RE 620.

In the present invention, the carbon black is conventional in the art;

preferably, the carbon black is obtained by a manufacturer of Kencarb carbon black with the brand number of N990, N330, N550 or N774, and the carbon black accounts for 22 parts by weight.

In the present invention, the release agent is conventional in the art;

preferably, the purchasing manufacturer of the release agent is Struktol Company of America, LLC under the trademark HT290, WS180, WS280, FPA or FPA-1, and the mass part of the release agent is 0.5 part.

In the invention, the zinc oxide is a conventional additive in the field, and can be replaced by magnesium oxide or bismuth oxide according to actual requirements.

In the present invention, the vulcanizing agent is conventional in the art;

preferably, the vulcanizing agent is purchased from Shanghai division of Account company of Akoma (China), the brand number is 101XL45-SP2, and the mass part of the vulcanizing agent is 2.4 parts.

In the present invention, the first auxiliary crosslinking agent is a crosslinking agent conventional in the art;

preferably, the first auxiliary crosslinking agent is triallyl isocyanurate, the supplier of the triallyl isocyanurate is the invested company of Woodford Gusaint (China), the first auxiliary crosslinking agent can be replaced by products with the brand numbers of SR519, SR521, SR517, SR231 or SR522, which are produced by the chemical company Limited of Sudoma (Guangzhou), and the mass part of the first auxiliary crosslinking agent is 0.3 part.

In the present invention, the second auxiliary crosslinking agent is a crosslinking agent conventional in the art;

preferably, the second auxiliary crosslinking agent is tetramethyltetravinylcyclotetrasiloxane, the manufacturer of the tetramethyltetravinylcyclotetrasiloxane is Shanghai Jun super chemical engineering development Co., Ltd, and the mass part of the second auxiliary crosslinking agent is 4 parts.

In the invention, the filler is conventional in the field, and can be talcum powder, montmorillonite, kaolin or calcium silicate;

preferably, the filler is HI-TAL hydrotalcite, the HI-TAL hydrotalcite is purchased from Korean cell chemical company, and the mass part of the filler is 10 parts.

In the invention, the first raw rubber is strictly screened according to other components and contents, the type of the first raw rubber is P459 produced by a Solvay group, wherein P495 is the brand of the first raw rubber;

preferably, the mass part of the first raw rubber is 10 parts.

In the invention, the second raw rubber is strictly screened according to other components and contents, the type of the second raw rubber is RE620 produced by UNIMATEC CHEMICALS EUROPE GMBH, wherein RE620 is the brand;

preferably, the mass part of the second raw rubber is 90 parts.

The invention also provides a preparation method of the FKM rubber compound for the composite rubber pipe, which comprises the following steps:

s1, feeding the first raw rubber and the second raw rubber into an internal mixer, wherein the rotating speed of the internal mixer is 18-22 r/min, the temperature of the internal mixer is 60-70 ℃, and the mixing time is 2-4 min;

s2, putting carbon black, a release agent, zinc oxide, a first auxiliary crosslinking agent, a second auxiliary crosslinking agent and a filler into the mixture treated in the S1, adjusting the temperature to 80-100 ℃, and mixing for 9-11 min at the rotating speed of 28-32 r/min;

and S3, putting the mixture processed in the S2 mode into an open mill, adding a vulcanizing agent, thinning and passing through the mixture for 5 times, processing for 7-9 min, adjusting the temperature to be 60-80 ℃, and discharging the slices.

Preferably, in S1, the rotation speed of the internal mixer is 20r/min, the temperature of the internal mixer is 65 ℃, and the mixing time is 3 min;

preferably, in S2, the adjusted temperature is 90 ℃, the mixing time is 10min, and the rotation speed is 30 r/min;

preferably, in S3, the adjusted temperature is 70 ℃ and the treatment time is 8 min.

The invention has the advantages and beneficial effects that: the FKM rubber compound for the composite rubber pipe is small in shrinkage rate after being placed, good in self-adhesive property and high in bonding strength with the FKM rubber compound for other composite rubber pipes; the method has the obvious advantage of ensuring partial performance on the basis of realizing balance of a plurality of main performances. The preparation method of the FKM rubber compound for the composite rubber pipe is simple and easy to popularize.

Detailed Description

The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1

The embodiment provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 220g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 3g of first auxiliary crosslinking agent, 40g of second auxiliary crosslinking agent, 100g of filler, 100g of first raw rubber and 900g of second raw rubber; the first raw rubber is P459, and the second raw rubber is RE 620.

The carbon black is purchased from Kencabo carbon black with the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent purchasing manufacturer is Shanghai province company of the Account company of Akoma (China), and the brand number is 101XL45-SP 2;

the first auxiliary crosslinking agent is triallyl isocyanurate, and the purchase manufacturer of the triallyl isocyanurate is capital company of Woundplasteisha (China);

the second auxiliary crosslinking agent is tetramethyltetravinylcyclotetrasiloxane, and the purchase manufacturer of the tetramethyltetravinylcyclotetrasiloxane is Shanghai Jun super chemical engineering development Co., Ltd;

the filler is HI-TAL hydrotalcite, and the HI-TAL hydrotalcite is purchased from Korean cell chemical company;

the first raw rubber is strictly screened according to other components and contents, the type of the first raw rubber is P459 of a Solvay group, wherein the P459 is the mark of the first raw rubber;

the second raw rubber is strictly screened according to other components and contents, the type of the second raw rubber is RE620 produced by UNIMATEC CHEMICALS EUROPE GMBH, wherein RE620 is the brand thereof.

The embodiment also provides a preparation method of the FKM rubber compound for the composite rubber pipe, which comprises the following steps:

s1, putting the first crude rubber and the second crude rubber into an internal mixer, wherein the rotating speed of the internal mixer is 20r/min, the temperature of the internal mixer is 65 ℃, and the mixing time is 3 min;

s2, putting the carbon black, the release agent, the zinc oxide, the first auxiliary crosslinking agent, the second auxiliary crosslinking agent and the filler into the mixture treated by the S1, adjusting the temperature to 900 ℃, and mixing for 10min at the rotating speed of 30 r/min;

and S3, putting the mixture processed in the S2 mode into an open mill, adding a vulcanizing agent, drawing and passing through the mixture for 5 times, processing for 8min, adjusting the temperature to 70 ℃, and discharging the sheets.

Comparative example 1

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 280g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 24g of auxiliary crosslinking agent and 1000g of raw rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the auxiliary crosslinking agent is triallyl isocyanurate, and a purchase manufacturer of the triallyl isocyanurate is the investment company of winning the debrider match (China);

the grade of the crude rubber is PCP228, and the purchase manufacturer of the crude rubber is Funuolin, Zhejiang, New chemical materials Co.

The comparative example was prepared in the same manner as in example 1.

Comparative example 2

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 280g of carbon black, 5g of mold release agent, 10g of zinc oxide, 16g of vulcanizing agent, 24g of auxiliary crosslinking agent and 1000g of raw rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the auxiliary crosslinking agent is triallyl isocyanurate, and a purchase manufacturer of the triallyl isocyanurate is the investment company of winning the debrider match (China);

the grade of the crude rubber is PCP228, and the purchase manufacturer of the crude rubber is Funuolin, Zhejiang, New chemical materials Co.

The comparative example was prepared in the same manner as in example 1.

Comparative example 3

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 280g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 24g of co-crosslinking agent, 900g of first green rubber and 100g of second green rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the auxiliary crosslinking agent is triallyl isocyanurate, and a purchase manufacturer of the triallyl isocyanurate is the investment company of winning the debrider match (China);

the first crude rubber is the PCP228, and the purchasing manufacturer of the first crude rubber is New chemical material Co., Ltd of Funuolin, Zhejiang;

the second crude rubber is of the brand number P459, and the purchasing manufacturer of the second crude rubber is a Solvay group.

The comparative example was prepared in the same manner as in example 1.

Comparative example 4

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 220g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 6g of first auxiliary crosslinking agent, 30g of second auxiliary crosslinking agent, 100g of filler, 900g of first green rubber and 100g of second green rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the first auxiliary crosslinking agent is triallyl isocyanurate, and the purchase manufacturer of the triallyl isocyanurate is capital company of Woundplasteisha (China);

the second auxiliary crosslinking agent is tetramethyltetravinylcyclotetrasiloxane, and the purchase manufacturer of the tetramethyltetravinylcyclotetrasiloxane is Shanghai Jun super chemical engineering development Co., Ltd;

the filler is HI-TAL hydrotalcite, and the HI-TAL hydrotalcite is purchased from Korean cell chemical company;

the first crude rubber is the PCP228, and the purchasing manufacturer of the first crude rubber is New chemical Material Co.

The second crude rubber is of the brand number P459, and the purchasing manufacturer of the second crude rubber is a Solvay group.

The comparative example was prepared in the same manner as in example 1.

Comparative example 5

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 220g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 6g of first auxiliary crosslinking agent, 50g of second auxiliary crosslinking agent, 100g of filler, 900g of first green rubber and 100g of second green rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the first auxiliary crosslinking agent is triallyl isocyanurate, and the purchase manufacturer of the triallyl isocyanurate is capital company of Woundplasteisha (China);

the second auxiliary crosslinking agent is tetramethyltetravinylcyclotetrasiloxane, and the purchase manufacturer of the tetramethyltetravinylcyclotetrasiloxane is Shanghai Jun super chemical engineering development Co., Ltd;

the filler is HI-TAL hydrotalcite, and the HI-TAL hydrotalcite is purchased from Korean cell chemical company;

the first crude rubber is the PCP228, and the purchasing manufacturer of the first crude rubber is New chemical Material Co.

The second crude rubber is of the brand number P459, and the purchasing manufacturer of the second crude rubber is a Solvay group.

The comparative example was prepared in the same manner as in example 1.

Comparative example 6

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 220g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 6g of first auxiliary crosslinking agent, 40g of second auxiliary crosslinking agent, 100g of filler, 900g of first green rubber and 100g of second green rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the first auxiliary crosslinking agent is triallyl isocyanurate, and the purchase manufacturer of the triallyl isocyanurate is capital company of Woundplasteisha (China);

the second auxiliary crosslinking agent is tetramethyltetravinylcyclotetrasiloxane, and the purchase manufacturer of the tetramethyltetravinylcyclotetrasiloxane is Shanghai Jun super chemical engineering development Co., Ltd;

the filler is HI-TAL hydrotalcite, and the HI-TAL hydrotalcite is purchased from Korean cell chemical company;

the first crude rubber is the PCP228, and the purchasing manufacturer of the first crude rubber is New chemical Material Co.

The second crude rubber is of the brand number P459, and the purchasing manufacturer of the second crude rubber is a Solvay group.

The comparative example was prepared in the same manner as in example 1.

Comparative example 7

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 280g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 70g of co-crosslinking agent, 900g of first green rubber and 100g of second green rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the auxiliary crosslinking agent is triallyl isocyanurate, and a purchase manufacturer of the triallyl isocyanurate is the investment company of winning the debrider match (China);

the first crude rubber is the PCP228, and the purchasing manufacturer of the first crude rubber is New chemical material Co., Ltd of Funuolin, Zhejiang;

the second crude rubber is of the brand number P459, and the purchasing manufacturer of the second crude rubber is a Solvay group.

The comparative example was prepared in the same manner as in example 1.

Comparative example 8

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 280g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 35g of first auxiliary crosslinking agent, 350g of second auxiliary crosslinking agent, 900g of first green rubber and 100g of second green rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the first auxiliary crosslinking agent is triallyl isocyanurate, and the purchase manufacturer of the triallyl isocyanurate is capital company of Woundplasteisha (China);

the second auxiliary crosslinking agent is tetramethyltetravinylcyclotetrasiloxane, and the purchase manufacturer of the tetramethyltetravinylcyclotetrasiloxane is Shanghai Jun super chemical engineering development Co., Ltd;

the first crude rubber is the PCP228, and the purchasing manufacturer of the first crude rubber is New chemical Material Co.

The second crude rubber is of the brand number P459, and the purchasing manufacturer of the second crude rubber is a Solvay group.

The comparative example was prepared in the same manner as in example 1.

Comparative example 9

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 280g of carbon black, 5g of mold release agent, 10g of zinc oxide, 24g of vulcanizing agent, 70g of co-crosslinking agent, 900g of first green rubber and 100g of second green rubber.

The carbon black purchasing manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the assistant crosslinking agent is tetramethyltetravinylcyclotetrasiloxane, and the purchase manufacturer of the tetramethyltetravinylcyclotetrasiloxane is Shanghai Jun super chemical engineering development Co., Ltd;

the first crude rubber is the PCP228, and the purchasing manufacturer of the first crude rubber is New chemical material Co., Ltd of Funuolin, Zhejiang;

the second crude rubber is of the brand number P459, and the purchasing manufacturer of the second crude rubber is a Solvay group.

The comparative example was prepared in the same manner as in example 1.

Comparative example 10

The comparative example provides an FKM rubber compound for a composite rubber pipe, which comprises the following components: 50g of first carbon black, 23g of second carbon black, 5g of release agent, 10g of zinc oxide, 24g of vulcanizing agent, 30g of auxiliary crosslinking agent, 100g of filler, 600g of first raw rubber and 400g of second raw rubber; the first raw rubber is RE620 and the second raw rubber is FLCP 228.

The first carbon black purchase manufacturer is investment Limited company of winning Chuangdegusai (China) and has the brand number of R974;

the second carbon black purchasing manufacturer is the investment company of Woundplast (China) with the brand number of N990;

the release agent was purchased from the Struktol Company of America, LLC under the designation HT 290;

the vulcanizing agent is purchased from Suzhou major macro polymer materials Co., Ltd, and the brand is SC-TX 101-50D;

the auxiliary crosslinking agent is triallyl isocyanurate, and a purchase manufacturer of the triallyl isocyanurate is the investment company of winning the debrider match (China);

the filler is magnesium oxide, and the purchasing manufacturer of the magnesium oxide is synergetics;

the type of the first raw rubber is P459 of the Solvay group;

the second raw rubber is G902 from Dajin Fumigation (China) Ltd.

The comparative example was prepared in the same manner as in example 1.

The effect of the products of example 1 and comparative examples 1-10 was tested:

the test items include shrinkage, adhesive strength at room temperature, Mooney relaxation data (ML (1+4) _60S) at 60 ℃ and adhesive strength after aging at 200 ℃/70H, and the effects are shown in Table 1 below:

TABLE 1 Effect of the products of example 1 and comparative examples 1 to 10

From the comparison of the technical effects, the FKM compound for the composite rubber pipe in the example 1 can realize balance of various performances, has no obvious short plate and has obvious advantages in partial technical effects.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.